WO2014046467A1 - Device for testing load of superconducting high-voltage dc cable - Google Patents

Device for testing load of superconducting high-voltage dc cable Download PDF

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Publication number
WO2014046467A1
WO2014046467A1 PCT/KR2013/008418 KR2013008418W WO2014046467A1 WO 2014046467 A1 WO2014046467 A1 WO 2014046467A1 KR 2013008418 W KR2013008418 W KR 2013008418W WO 2014046467 A1 WO2014046467 A1 WO 2014046467A1
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WO
WIPO (PCT)
Prior art keywords
voltage
unit
high voltage
current
power
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Application number
PCT/KR2013/008418
Other languages
French (fr)
Korean (ko)
Inventor
양병모
박진우
장태인
조흥상
Original Assignee
한국전력공사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from KR1020120103181A external-priority patent/KR101898732B1/en
Priority claimed from KR20120104127A external-priority patent/KR101486993B1/en
Application filed by 한국전력공사 filed Critical 한국전력공사
Publication of WO2014046467A1 publication Critical patent/WO2014046467A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements

Definitions

  • the present invention relates to a DC high voltage superconducting cable load test device, and more specifically, to test a superconducting cable to which a high voltage of DC is applied, the DC high voltage power supply and the DC high current power supply are directly contacted and applied simultaneously.
  • the present invention relates to a DC high voltage superconducting cable load tester which can be designed and inexpensive.
  • the DC voltage source and the DC current source are independently configured to perform the test by applying the DC voltage and the DC current.
  • the DC voltage is used to generate and maintain the conductor temperature which is the test condition of the ultra high voltage DC cable through the current with the DC voltage source applied.
  • DC load test is performed using a non-contact inductive AC current supply independent from
  • the present invention has been made to solve the above problems,
  • An object of the present invention is to provide a DC high voltage superconducting cable load test apparatus that can be applied by direct contact, while applying a DC high voltage and a high current power supply at the same time to perform a DC load test of a DC high voltage power device such as a superconducting cable. have.
  • Another object of the present invention is to reduce the manufacturing cost in the insulation design, because the DC high current generator can withstand the test voltage of less than 1000 volts (V) in order to apply the high current power of the DC in the DC load test to the superconducting cable, It is an object of the present invention to provide a DC high voltage superconducting cable load test apparatus that does not cause an increase in the volume of the test apparatus.
  • Still another object of the present invention is to induce a high current of direct current by directly contacting and applying a high current of direct current, instead of inducing and applying a high current of alternating current.
  • the present invention provides a DC high voltage superconducting cable load test apparatus capable of performing a DC load test on the entire DC high voltage power device without performing the test.
  • the present invention produces a DC high voltage generator for applying a DC high voltage low current power to the first terminal electrically connected to the test object and a low voltage high current power of AC and converts the DC low voltage high current power to the first terminal.
  • Applying a low voltage high current power supply of direct current to the second terminal to be and includes a DC high current generator having a third terminal electrically connected to the test object separately from the first and second terminals, the DC high current generator, A low voltage unit grounded to the ground and providing a driving force for producing a low voltage high current power source of DC in the DC high current generator; a high voltage unit and the low voltage unit receiving a driving power from the low voltage unit to produce a low voltage high current power source of DC; It is disposed between the high voltage section to transfer the driving force of the low voltage section to the high voltage section while maintaining the insulation state It is provided with supplementary insulation.
  • the low voltage unit a control unit for transmitting a control signal to the DC high current generator
  • a drive motor is provided to receive a control signal of the control unit to rotate a rotating shaft, wherein the high voltage unit receives a driving force from the low voltage unit to produce a low voltage high current power of AC, and receives power from the generator,
  • a controller for receiving a control signal from a low voltage unit and an AC direct current converter, which is controlled by the controller and converts the low voltage high current power of the AC produced by the generator into a low voltage high current of DC
  • the insulation unit includes the high voltage unit and the low voltage.
  • An insulation support insulator supporting the parts to be spaced apart from each other while maintaining the insulation state, and a power transmission shaft for transmitting the driving force generated in the low voltage portion to the high voltage portion while maintaining the insulation state.
  • the voltage of the DC high voltage low current power source generated by the DC high voltage generator exceeds 750 V, and the voltage of the high voltage unit is a voltage of 0 seconds or more and 750 V or less, which is a DC high voltage low current power source applied from the DC high voltage generator as a reference voltage.
  • the voltage of the low voltage unit is characterized in that the voltage of 0 seconds or more and 750V or less with the grounded ground as the reference voltage.
  • the AC DC converter may include a decompression unit for transforming power applied from the generator to a voltage of less than 1 to 100 V, a plurality of transformer units for converting AC power into DC power by receiving power transformed from the decompression unit; And a pair of conductive parts connected to the plurality of transformer parts and connected to the second terminal and the third terminal, respectively, and a diagnostic part for monitoring an internal state of the AC DC converter.
  • An apparatus for testing a direct current load of a direct current high voltage power supply by applying a high voltage direct current, the direct current contacting the direct current high voltage power supply connected to the ground and applying a direct current high voltage and direct current And a low voltage part which is grounded to the ground to produce a low voltage high current of AC, an isolation isolation transformer electrically connected to the low voltage part, and an isolation isolation transformer applied with a low voltage high current of AC from the low voltage part.
  • a high voltage unit configured to receive a low voltage high current supplied from a power source induced by the power supply unit, the high voltage supply unit applying a high voltage of direct current through a single power supply line, and the direct current high current supply unit supplying a direct current through a plurality of power supply lines Applying a high current, the high voltage unit
  • a low voltage AC DC converter having a voltage performance value including a value of a voltage difference between a plurality of power supply lines connected to the DC high current supply unit is provided, wherein the high voltage unit exceeds 750V using the DC high voltage supply unit as a reference voltage.
  • a voltage is generated, and the low voltage unit generates a voltage greater than 0 and less than or equal to 750 V based on the grounded ground.
  • a direct current high current supply unit which is directly contacted to supply a high current direct current, wherein a power supply line for applying a high voltage of direct current from the direct current high voltage supply unit to the direct current high voltage power device is provided as a single line, and in the direct current high current supply unit Another power supply line for applying a high current of DC to the DC high voltage power device is provided with a plurality of lines that the high current of the DC input and output (output), the DC high voltage supply unit is applied to the power three-phase DC to generate high voltage and low current by using AC current rectifier
  • a high voltage resistor for supplying a high voltage source and a high voltage low current generated from the DC high voltage source to the DC high voltage power device is provided.
  • the DC high current supply unit includes a low voltage unit grounded to the ground, and a DC high voltage power device.
  • the high voltage unit and the low voltage unit and the high voltage unit to be connected to each other is provided, and is provided with an isolation separation transformer for generating a high voltage AC power by receiving AC power from the low voltage unit.
  • the low voltage unit includes a control panel for controlling the DC high current supply unit, a first communication unit connected to the control panel and a control signal connected to the first communication unit, and receiving an control signal to generate an AC power source, wherein the insulation separation transformer AC power supply unit for applying an AC power supply.
  • the high voltage unit is connected to the isolation transformer, and receives a high voltage AC power generated from the isolation transformer to generate a low voltage high current, and the AC direct current converter is connected to the DC high voltage power device so as to conduct electricity
  • the low voltage high current generated by the DC converter is applied, and the voltage tap unit for monitoring and controlling the low voltage high current applied at this time is connected to the AC DC converter and the voltage tap unit to control and measure the output, and to monitor the monitoring data of the voltage tap unit.
  • a second communication unit configured to receive a control signal from the control unit and the low voltage unit to control the control unit, and to transmit data collected to the control unit to the low voltage unit, wherein the AC DC converter includes the DC high current supply unit. Voltage difference between multiple power supply lines connected Is measured by the control unit, and the voltage difference value is included in a range within a voltage performance value required for the AC DC converter.
  • the high voltage unit receives a control signal from the low voltage unit, and the data collected in the high voltage unit is transmitted to the low voltage unit.
  • the insulation separation transformer is connected to each other between an insulating cylinder having a space formed therein, a fixed frame spaced apart from each other to face each other inside the insulating cylinder, and the fixed frame facing each other, and vertically up and down in the fixed frame.
  • a plurality of iron cores installed, a primary coil wound around a lower core among the plurality of iron cores, a primary coil receiving a low voltage AC power from the low voltage unit, and a primary coil wound around an upper core of the plurality of iron cores, And a secondary coil for applying a high voltage AC power induced from a coil to the high voltage part, and an insulating support provided to connect the fixing frames facing each other between the primary coil and the secondary coil.
  • the insulation separation transformer further includes an insulation paper wound on the insulation support, an insulation member filled in the space portion of the insulation cylinder, and a base coupled to a lower end of the insulation cylinder.
  • the insulating cylinder is provided with a plurality of skirts protruding from the outer circumferential surface of the insulating cylinder.
  • the insulating member is characterized in that the fluid.
  • the insulating member is filled so that a free space is formed in the upper portion of the insulating cylinder without being buffered in the space part.
  • the base includes a flow path communicating with the space portion of the insulating cylinder and a cover part provided on an outer surface of the base to open and close the flow path.
  • the insulating paper is characterized in that the winding on the outer surface of the insulating support in a mixed form of horizontal and vertical.
  • the insulating cylinder further includes a plurality of bands provided to surround an outer surface of the insulating cylinder.
  • the DC load test apparatus further includes a safety circuit unit configured to transmit and receive a feedback signal from the DC high voltage supply unit and the DC high current supply unit.
  • the high voltage unit generates a voltage exceeding 750 V using the DC high voltage supply unit as a reference voltage
  • the low voltage unit generates a voltage greater than 0 and less than 750 V using the grounded ground as the reference voltage.
  • the present invention has the effect of performing a direct current load test in a state in which the direct contact of the high voltage and high current power supply of direct current at the same time in order to perform a direct current load test of a direct current high voltage power device such as a superconducting cable.
  • the DC high current generator needs to withstand a test voltage of less than 1000 volts (V) in order to apply a DC high current power supply to the superconducting cable during the DC load test, thereby reducing the manufacturing cost in the insulation design and testing There is also an effect that does not result in an increase in the volume of the device.
  • the present invention does not perform a test in a partial region of a DC high voltage power device as in the case of performing a DC load test, inducing and applying a high current of AC by directly contacting and applying a high current of DC, instead of inducing and applying a high current of AC.
  • the DC load test can be performed in the entire DC high voltage power device without the effect of improving the reliability of the DC load test result.
  • the present invention is effective to reduce the equipment cost by using an AC DC converter requiring a low voltage high current performance value in place of an AC DC converter requiring a high voltage high current performance value to apply a DC high current to the DC high voltage power device. have.
  • FIG. 1 is a view schematically showing a first embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention.
  • FIG. 2 is a schematic view of the DC high current generator of FIG. 1.
  • FIG. 2 is a schematic view of the DC high current generator of FIG. 1.
  • FIG. 3 is a diagram illustrating a configuration of a DC high current generator according to FIG. 2.
  • FIG. 4 is a diagram illustrating an internal configuration of the AC DC converter according to FIG. 3.
  • FIG. 5 shows a superconducting cable connected to the AC DC converter according to FIG. 4;
  • Figure 6 schematically shows a second embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention.
  • FIG. 7 is a view showing a DC high voltage supply unit shown in FIG. 6.
  • FIG. 8 is a view showing a direct current high current supply unit according to FIG.
  • FIG. 9 is a view showing the isolation transformer according to FIG. 8.
  • FIG. 10 is a view showing the interior of the isolation transformer according to FIG.
  • FIG. 11 is a view showing an example of use of the DC high voltage superconducting cable load test apparatus shown in FIG.
  • FIG. 1 is a view schematically showing a first embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention
  • FIG. 2 is a view schematically showing the DC high current generator of FIG. 1
  • FIG. 4 is a diagram illustrating a configuration of a DC high current generator according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating an internal configuration of the AC DC converter according to FIG. 3
  • FIG. 5 is a diagram of a superconducting cable connected to the AC DC converter according to FIG. 4. to be.
  • a direct current high voltage supply unit (2) for supplying a high voltage low current power supply to the first terminal (10) electrically connected to the test subject and Produces a low voltage high current power and applies a DC low voltage high current power to the second terminal 20 connected to the first terminal 10, and electrically separates the test object from the first and second terminals 10 and 20.
  • DC high current supply unit 3 is provided with a third terminal 30 connected to the.
  • the voltage of the DC high voltage high current power supply produced by the DC high voltage supply unit 2 exceeds 750V, and the power supply having a voltage above 0 and below 750V using the grounded ground as the reference voltage in the low voltage unit 300.
  • a low voltage high current power supply of AC having a voltage of more than 0 and less than 750 V, which uses a high voltage low current power supply of more than 750 V as a reference voltage is applied in the high voltage unit 400.
  • the low voltage in the case of an alternating current, the low voltage is more than 0V and 600V, and the high voltage is more than 600V and 7,000V or less.
  • the low voltage In the case of direct current, the low voltage is more than 0V and 750V, and the high voltage is more than 750V and 7,000V or less.
  • AC and DC both exceed 7000V and below 66,000V are called high voltages, and above 66,000V and below 220,000V are referred to as high voltages.
  • the reference voltage of the high voltage unit 400 is greater than 750V and may include the above-described high voltage, extra high voltage, and ultra high voltage.
  • the test object is a high-voltage, high-current power supply of direct current, the superconducting cable (a) in the present invention as an example.
  • the DC high voltage supply unit 2 applies a DC high voltage low current power supply to the superconducting cable a, which is the test object, through the first terminal 10.
  • the DC high current supply unit 3 generates an AC low voltage high current power source, converts it into a DC low voltage high current power source, and then directs DC to a second terminal 20 connected to the first terminal 10.
  • the low voltage high current power is applied, and the third terminal 30 is provided separately from the first and second terminals 10 and 20 so that the DC low voltage high current power is supplied to the superconducting cable a.
  • the DC high current supply unit 3 will be described in more detail with reference to FIG. 3.
  • the DC high current supply unit 3 is grounded to the ground, and the driving force for producing a DC low voltage high current power supply from the DC high current supply unit 3. It is disposed between the low voltage unit 300 and the high voltage unit 400 and the low voltage unit 300 and the high voltage unit 400 to receive a driving force from the low voltage unit 300 to produce a low voltage high current power supply of direct current Insulation 600 is provided to transfer the driving force of the low voltage unit 300 to the high voltage unit 400 while maintaining the insulation state.
  • the low voltage unit 300 is provided with a control panel 310 for transmitting and receiving a control signal to the DC high current supply unit 3 and a drive motor 340 for receiving a control signal of the control panel 310 to rotate the rotary shaft 341. do.
  • the control panel 310 may receive a signal by the operator's operation by wire or wirelessly, the signal for controlling the high voltage unit 400 is preferably to transmit and receive wirelessly to maintain the insulation state.
  • control panel 310 When the operator transmits an ON / OFF signal to the control panel 310 by wire or wirelessly, the control panel 310 operates or stops the driving motor 340.
  • the high voltage unit 400 receives a driving force from the low voltage unit 300 and generates a low voltage high current power source of alternating current, and receives power from the generator 450, from the low voltage unit 300.
  • a controller 430 for receiving a control signal and an AC DC converter 410 controlled by the controller 430 to convert the low voltage high current power of the AC produced by the generator 450 into the low voltage high current of the DC are provided.
  • the generator 450 receives the rotational force of the rotation shaft 341 according to the operation of the drive motor 340 to produce a low voltage high current power of AC.
  • the controller 430 receives power required for operation from the generator 450 and wirelessly receives a control signal from the control panel 310 of the low voltage unit 300 to control the AC DC converter 410. .
  • the AC DC converter 410 receives power required for operation from the generator 450 and converts the AC low voltage high current power produced by the generator 450 into DC low voltage high current power.
  • the reference voltage of the low voltage high current of the alternating current and the low voltage high current of the DC produced by the high voltage unit 400 is connected to the DC high voltage supply unit through the first terminal 10 to which the second terminal 20 is connected.
  • the voltage of the DC high voltage low current power source applied in 2) is used as the reference voltage, and the low voltage unit 300 uses the ground ground as the reference voltage.
  • the AC DC converter 410 receives a reduced pressure unit 411 for transforming the power applied from the generator 450 to a voltage of less than 1 to 100 V, and receives the transformed power from the reduced pressure unit 411 to supply AC power.
  • the generator 450 produces a low voltage high current power of AC which is greater than 0 and less than 750 V using a high voltage low current power of DC applied from the DC high voltage supplying part 2 as a reference voltage. ) Is further reduced to a low voltage high current power supply of alternating current of less than 1 to 100V.
  • the plurality of transformers 412 converts a low voltage high current power source of an AC of less than 1 to 100 V into a low voltage high current power source of DC of less than 1 to 100 V in the decompression unit 411.
  • the AC DC converter 410 in order to dissipate heat generated inside the AC converter 410 to the outside, the AC DC converter 410 has a plurality of louvers through which side surfaces are passed to prevent the inflow of moisture such as rainwater from the outside. 415 is covered with an outer case 414 is formed.
  • the AC DC converter 410 is further provided with a diagnostic unit (not shown) for stopping the supply of current to the superconducting cable (a) when a high temperature or high pressure is generated by measuring the temperature and pressure therein the AC DC It protects the circuit of the converter 410 and prevents a safety accident.
  • a diagnostic unit not shown for stopping the supply of current to the superconducting cable (a) when a high temperature or high pressure is generated by measuring the temperature and pressure therein the AC DC It protects the circuit of the converter 410 and prevents a safety accident.
  • the insulating part 600 maintains the high voltage part 400 and the low voltage part 300 while maintaining an insulating state, and insulates the driving force generated from the insulating support insulator 610 and the low voltage part 300.
  • a power transmission shaft 620 is provided to maintain and transmit the same to the high voltage unit 400.
  • the insulation support insulator 610 is preferably provided at least two to support the high voltage unit 400 and the low voltage unit 300 to be stably spaced apart.
  • One end of the power transmission shaft 620 is coupled to a rotating shaft 341 that rotates according to the operation of the driving motor 340 of the low voltage unit 300, and the other end to the generator 450 of the high voltage unit 400. Coupled to transmit the driving force generated in the drive motor 340 of the low voltage unit 300 to the generator 450 of the high voltage unit 400.
  • the power transmission shaft (D) so that the DC high voltage low current power applied from the DC high voltage supply unit 2 to the high voltage unit 400 is not applied to the low voltage unit 300 through the power transmission shaft 620.
  • 620 is connected to the generator 450 and the drive motor 340, it should be connected to maintain the insulation state.
  • One end of the superconducting cable (a) is connected to the second terminal 20 provided in the high voltage unit 400 using the superconducting cable (a) as the test object, and the other end of the superconducting cable (a) is the high voltage unit.
  • the third terminal 30 of 400 is connected.
  • the second terminal 20 should be electrically connected to the first terminal 10 of the DC high voltage supply unit 2.
  • the DC high voltage supply unit 2 is operated to supply a DC high voltage low current power supply having a voltage greater than 750 V to one end of the superconducting cable a through the first terminal 10 connected to the high voltage unit 400. Is authorized.
  • the superconducting cable (a) should be grounded to the ground in order for the superconducting cable (a) to be supplied with the high voltage low current power supply of the direct current applied from the direct current high voltage supply unit (2).
  • control unit 310 transmits a control signal to the drive motor 340 by applying a voltage of less than 0 750V or less to rotate the rotating shaft 341, the insulating portion 600 coupled to the rotating shaft 341
  • the generator 450 of the high voltage unit 400 is operated by the power transmission shaft 620.
  • the low voltage high current power source of the alternating current produced by the generator 450 has a voltage greater than 0 and less than or equal to 750 V using the high voltage low current power supply exceeding 750 V applied by the DC high voltage supply unit 2 as a reference voltage.
  • the controller 430 and the AC DC converter 410 of the unit 400 are respectively supplied, and the controller 430 supplied with power from the generator 450 controls the AC DC converter 410 to generate the generator 450. ) Converts the low voltage high current power of the AC supplied to the AC DC converter 410 into the low voltage high current power of the DC.
  • the DC low voltage high current power converted by the AC DC converter 410 is connected to the superconducting cable a through the second terminal 20 electrically connected to the first terminal 10 of the DC high voltage supply unit 2.
  • the low-voltage high-current power supply of DC applied to the superconducting cable (a) is again applied to the AC DC converter 410 through the third terminal 30. That is, the DC load test according to the heat generation of the superconducting cable (a) while the DC low voltage high current power flows through the superconducting cable (a).
  • the voltage performance value required for the AC DC converter 410 is a direct current low voltage high current power source using a direct current high voltage low current power source applied from the direct current high voltage supply unit 2 to the first terminal 10 as a reference voltage.
  • the DC low voltage high current power applied to the superconducting cable (a) through the second terminal 20 and applied to the AC DC converter 410 through the third terminal 30 is energized to the superconducting cable (a). All that is necessary is to include the lost voltage.
  • the insulation design of the components constituting the high voltage unit 400 of the present invention to withstand the test voltage of the high voltage exceeding 750V is not required, and the insulation design for the test voltage of the low voltage exceeding 0 and less than 750V becomes Since it is sufficient, the design cost of the superconducting cable (a) test apparatus is reduced.
  • the diagnostic unit installed in the AC DC converter 410 monitors the temperature and pressure inside the AC DC converter 410 to automatically cut off the supply of DC low voltage high current power when a high temperature or high pressure occurs. Prevent damage to the test equipment.
  • the controller 430 of the high voltage unit 400 transmits the data collected while controlling the AC DC converter 410 to the control panel 310 of the low voltage unit 300 so that the operator can control the control panel 310.
  • Directly displayed or the control panel 310 transmits the data transmitted from the controller 430 to an external display device to enable the operator to check the electrical and physical state of the test apparatus according to the present invention.
  • FIG. 6 is a view schematically showing a second embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention
  • FIG. 7 is a view showing the DC high voltage supply unit shown in FIG. 6,
  • FIG. 8 is shown in FIG. 6.
  • FIG. 9 is a diagram illustrating a DC high current supply unit
  • FIG. 9 is a diagram illustrating an isolation transformer according to FIG. 8
  • FIG. 10 is a diagram illustrating an inside of the isolation transformer according to FIG. 9, and FIG. 11 is shown in FIG. 6.
  • DC load test apparatus of the DC high voltage power device 1 according to the present invention will be described.
  • DC high voltage supply unit 2 which is directly in contact with the DC high voltage power device 1 to supply electricity and supplies DC high voltage and DC which is in direct contact so as to supply electricity to the DC high voltage power device 1 to supply DC current of high current.
  • a high current supply unit 3 which is directly in contact with the DC high voltage power device 1 to supply electricity and supplies DC high voltage and DC which is in direct contact so as to supply electricity to the DC high voltage power device 1 to supply DC current of high current.
  • the DC high voltage power device 1 refers to a power device to which a high voltage of DC is applied.
  • a submarine cable or a superconducting cable installed on the sea floor to supply power is used as an example.
  • the power supply line a1 for applying a high voltage of DC from the DC high voltage supply unit 2 to the DC high voltage power device 1 is provided as a single line, and the DC high voltage power supply 1
  • Another power supply line (a2, a3) for applying a high current of direct current () is provided with a plurality of lines to which a high current of direct current is applied or input and output or output.
  • the DC high voltage power device 1 is grounded to the ground, the DC high voltage is applied from the DC high voltage supply unit 2 to the DC high voltage power device 1 through the power supply line a1 which is the single line. To be possible.
  • the DC high voltage supply unit 2 includes a DC high voltage source unit 100 that generates a high voltage low current and a high voltage resistor 200 that is supplied to the DC high voltage power device 1. do.
  • the DC high voltage source unit 100 receives a three-phase AC current to produce a high voltage low current through a rectifier (not shown).
  • the high voltage resistor 200 supplies the high voltage low current produced by the DC high voltage source unit 100 to the DC high voltage power device 1.
  • the high voltage resistor 200 prevents the high voltage low current generated by the DC high voltage supply unit 2 from flowing back to the DC high voltage source unit 100.
  • the DC high voltage supply unit 2 protects the DC high voltage supply unit 2 by absorbing a shock caused by a sudden change in voltage and current generated in the DC high voltage source unit 100.
  • the DC high current supply unit 3 is an isolation voltage transformer for connecting the low voltage unit 300 located below and the high voltage unit 400 located above and the low voltage unit 300 and the high voltage unit 400 to be insulated from each other. And 500.
  • the low voltage unit 300 is located below the DC high current supply unit 3 and is grounded with the ground.
  • the insulation separation transformer 500 may insulate the low voltage unit 300 and the high voltage unit 400 from each other, and receives the AC power to the low voltage unit 300 to produce a high voltage AC power to generate the high voltage unit 400. ).
  • the low voltage unit 300 includes a control panel 310 for controlling the DC high current supply unit 3, a first communication unit 320 and a first communication unit 320 connected to the control panel 310 to transmit and receive a control signal. Is connected to generate a control signal to generate an AC power and is composed of an AC power supply unit 330 for applying AC power to the isolation transformer 500.
  • the control panel 310 is installed outside the enclosure of the DC high current supply unit 3 can be operated by the operator directly or indirectly by wireless communication from a long distance.
  • control panel 310 may be connected to the DC high voltage supply unit 2 to control the DC high voltage supply unit 2 by operating the control panel 310.
  • the AC power supply unit 330 When the AC power supply unit 330 receives a control signal from the control panel 310 from the first communication unit 320, the AC power supply unit 330 applies AC power to the insulation separation transformer 500. AC power is applied to the primary coil 540 installed inside the 500.
  • the high voltage unit 400 is connected to the AC direct current converter 410 and the AC direct current converter 410 to generate a low voltage high current by receiving an AC power supply from the isolation transformer 500.
  • a voltage tap unit 420 for applying a low voltage high current generated by the AC DC converter 410 to the device 1, and monitoring and controlling the low voltage high current applied thereto, and the AC DC converter 410 and the voltage tap unit ( It is connected to the 420 to control and measure the output, and receives the control signal from the control unit 430 and the low voltage unit 300 for receiving the monitoring data of the voltage tap unit 420 to control the control unit 430
  • a second communication unit 440 for transmitting the data collected by the control unit 430 to the low voltage unit 300.
  • the AC DC converter 410 generates a DC voltage having a low voltage and high current from an AC power having a high voltage applied from the isolation transformer 500. It is applied to the DC high voltage power device 1 through the voltage tap unit 420, the voltage tap unit 420 is a low voltage high current DC power applied from the AC DC converter 410 and the DC high voltage power device ( 1) monitors the state and amount of the low-voltage high-current DC power applied to the control unit 430 transmits data on the result value to the control unit 430, if necessary, the voltage tap unit 420 by the control unit 430 It is possible to control the DC power of the low voltage high current applied to the DC high voltage power device (1) by controlling the.
  • the series of control is performed through the second communication unit 440 connected to the control unit 430 to control the control unit 430, and the second communication unit 440 is the low voltage unit 300.
  • the control signal of the control panel 310 is received from the first communication unit 320 installed in the.
  • the second communication unit 440 receives a control signal from the first communication unit 320, and the second communication unit 440 receives data collected by the control unit 430 and receives the first communication unit ( To 320).
  • the transmission and reception between the first communication unit 320 and the second communication unit 440 is performed wirelessly, or the optical cable (b) drawn out from the first communication unit 320 and the second communication unit 440, respectively, and the optical cable ( It can be made through the optical connection (c) connecting the b) to each other.
  • the allowable voltage performance value of the AC DC converter 410 is a voltage difference between the plurality of power supply lines a1 and a2 connected from the high voltage unit 400 of the DC high current supply unit 3 to the DC high voltage power device 1.
  • the thing which has voltage performance value of the range to include is used.
  • the low voltage unit 300 that applies AC power to the primary coil 540 to induce a high voltage AC power to the secondary coil 550 has a voltage greater than 0V and less than 750V using a grounded ground as a reference voltage. Is generated, and the high voltage unit 400 generating a low voltage direct current by applying a high voltage AC power induced in the secondary coil 550 refers to a voltage exceeding 750 V of the direct current high voltage supply unit 2. A voltage that is greater than 0 V and less than or equal to 750 V is generated.
  • the low voltage in the case of an alternating current, the low voltage is more than 0V and 600V, and the high voltage is more than 600V and 7,000V or less.
  • the low voltage In the case of direct current, the low voltage is more than 0V and 750V, and the high voltage is more than 750V and 7,000V or less.
  • AC and DC both exceed 7000V and below 66,000V are called high voltages, and above 66,000V and below 220,000V are referred to as high voltages.
  • the reference voltage of the high voltage unit 400 is greater than 750V and may include the above-described high voltage, extra high voltage, and ultra high voltage.
  • the insulation separation transformer 500 includes an insulation cylinder 510, a fixing frame 520 installed inside the insulation cylinder 510, and a top and bottom in the fixing frame 520.
  • An insulation support 560 installed between the primary coil 540 and the secondary coil 550, an insulation paper 570 wound around the insulation support 560, and an interior of the insulation cylinder 510.
  • a base 590 coupled to a lower end of the insulating member 580 and the insulating cylinder 510.
  • the insulating cylinder 510 is a space portion 513 is formed therein, in the present invention, the lower end is coupled to the upper portion of the base 590, the upper end is a shape coupled to the removable finishing member, each coupling Flange was formed in the part, and the gasket etc. were provided in between, and the sealing force was improved.
  • the fixing frame 520 is installed inside the insulating cylinder 510, that is, space part 513, and spaced apart from each other to face each other.
  • the fixing frame 520 is used to firmly support the primary coil 540 and secondary coil 550 and the insulating support 560 by using a '?' Shaped steel.
  • the fixed frames 520 that are spaced apart from each other are provided with a plurality of iron cores 530 installed to connect the fixed frames 520 spaced apart from each other at the upper and lower portions of the fixed frame 520, and the plurality of Between the iron cores 530, an insulating support 560 is installed to connect the fixed frame 520 spaced apart from each other.
  • the primary coil 540 is wound around the iron core 530 located below the iron core 530
  • the secondary coil 550 is wound around the iron core 530 located above the primary coil 530.
  • An insulating paper 570 is wound around the insulating support 560 positioned between the 540 and the secondary coil 550 to insulate the primary coil 540 and the secondary coil 550.
  • the insulating paper 570 wound on the insulating support 560 is wound on the outer surface of the insulating support 560 in a mixed form of horizontal and vertical to insulate the insulation distance between the primary coil 540 and the secondary coil 550. It is desirable to ensure that is sufficient.
  • the space 513 of the insulating cylinder 510 is filled with an insulating member 580 for insulating.
  • a fluid such as insulating oil.
  • the primary coil 540 and the secondary coil (540) are not injected so that the insulating member 580 is buffered in the space 513 of the insulating cylinder 510.
  • 550 and the insulating support 560 on which the insulating paper 570 is wound are completely immersed in the insulating member 580, and the filling of the fluid state is performed by filling a space in the upper portion of the insulating cylinder 510.
  • the breakdown of the insulating cylinder 510 due to thermal expansion of the insulating member 580 is prevented.
  • the insulating cylinder 510 is formed with a plurality of skirts 511 protruding from the outer peripheral surface to maintain a sufficient insulation distance, the skirt 511 is preferably made of a polymer material.
  • the insulating cylinder 510 may be provided with a plurality of bands 512 to surround the outer circumferential surface thereof so as to be reinforced to cope with the load applied to the insulating cylinder 510 to prevent distortion of the insulating cylinder 510. have.
  • the base 590 is coupled to the lower end of the insulating cylinder 510, and a flow path 591 is formed therein, which communicates with the space 513 of the insulating cylinder 510, and the base 590.
  • the outer surface of the cover portion 592 that can open and close the flow path (591) is provided.
  • one end of the flow passage 591 penetrates an upper surface of the base 590, the other end penetrates through a side surface of the base 590, and the other end of the flow passage 591 is connected to the cover part 592.
  • the cover part 592 is opened so that the insulating member 580 in a fluid state in the insulating cylinder 510 can be taken out so that the state of the insulating member 580 can be monitored.
  • the operator is the DC high voltage supply unit 2 and the DC high current supply unit 3 It is not possible to directly monitor, or in the event of an emergency by controlling the DC high voltage supply unit 2 and the high current supply by the safety circuit unit 4 to prevent safety accidents.
  • the safety circuit unit 4 is preferably connected to the first communication unit 320 and the second communication unit 440 to perform data collection and control.
  • a plurality of power supply lines a2 and a3 drawn out at 420 are respectively connected.
  • the power supply line a1 drawn out from the high voltage resistor 200 is a power supply line a1 that applies a high voltage DC power, and is composed of one power supply line a1 and drawn from the voltage tap unit 420.
  • a3) is to apply a high current DC power supply is composed of two power supply lines (a2, a3) to be connected to both ends of the submarine cable or superconducting cable.
  • the submarine cable or superconducting cable is grounded to the ground.
  • a high voltage may be applied to the submarine cable or the superconducting cable, thereby testing the insulation state of the submarine cable or the superconducting cable.
  • the DC high voltage supply unit 2 is provided with a high voltage resistor 200 so that the resistance of the DC high voltage supply unit 2 itself is greater than that of the submarine cable or superconducting cable based on the power supply line a1, thereby providing high voltage and low current. Is prevented from flowing back into the DC high voltage supply unit 2. It also serves to attenuate the current changes caused by failures (breakdowns) caused by the test load.
  • the control panel 310 is operated to transmit a control signal to the AC power supply unit 330 grounded to the ground through the first communication unit 320.
  • the AC power supply unit 330 has a three-phase AC power source (380v (volt)) generated using the ground as a reference voltage
  • the three-phase AC power source is supplied to the primary coil 540 in the isolation transformer 500. Is approved.
  • the high voltage generated by the DC high voltage supply unit 2 is generated.
  • a high voltage three-phase AC power source (380 V (volts)) having a low current voltage as a reference voltage is generated.
  • the high voltage three-phase AC power generated by the insulation separation transformer 500 is a three-phase 380V low voltage AC having a reference voltage of 100kV DC high voltage.
  • the high voltage three-phase AC power generated by the insulation separation transformer 500 is a three-phase 380V low voltage AC having a reference voltage of 100kV DC high voltage.
  • the high voltage three-phase AC power generated by the secondary coil 550 is applied to the AC DC converter 410 to generate a low voltage large current of DC, which is again through the voltage tap unit 420, the submarine cable or superconducting cable. It is applied to the DC high voltage power device 1, such as.
  • control unit 430 and the second communication unit 440 is operated in the high voltage unit 400 biased through the isolation transformer 500, while the first communication unit 320 of the low voltage unit 300 It is controlled by the control panel 310 by transmitting and receiving a control signal and data.
  • the DC high voltage power from the control unit 430 in the voltage and current performance value required for the AC DC converter 410, the DC high voltage power from the control unit 430, not the high voltage as generated by the DC high voltage supply unit 2, A voltage difference occurs between the plurality of power supply lines a2 and a3 due to the self-resistance of the DC high voltage power device 1 between two power supply lines a2 and a3 respectively connected to the device 1.
  • the voltage difference is required as much as the voltage difference is sensed (measured) by the voltage tap unit 420, the voltage performance value required by the control unit 430 as compared with the high voltage generated by the DC high voltage supply unit 2 is increased. Relatively small.
  • the AC direct current converter 410 which requires a low voltage high current performance value, can be tested by directly contacting a high voltage and a high current of DC, thereby reducing equipment costs in comparison with an AC DC converter requiring high voltage high current performance values. It is.
  • the three-phase AC power of the low voltage unit 300 is a high voltage three-phase AC power through the isolation transformer 500 is applied to the high voltage unit 400, the AC direct current having a capacity of low voltage high current again.
  • the low voltage high current of the direct current through the converter 410 is applied to the one end of the submarine cable or the superconducting cable by the voltage tap portion 420 through the power supply line a2.
  • the low voltage high current applied to one end of the submarine cable or superconducting cable is recovered to the voltage tap part 420 through the power supply line a3 through the other end.
  • the degree of heat generation of the submarine cable or superconducting cable can be tested during the DC load test.
  • the high voltage low current generated in the DC high voltage supply unit 2 is applied to the submarine cable or superconducting cable grounded to the ground through the power supply line (a1), At the same time, the low voltage high current generated by the DC high current supply unit 3 is applied to the submarine cable or superconducting cable through the power supply line a2, and is recovered to the DC high current supply unit 3 through the power supply line a3.
  • the high voltage low current applied from the DC high voltage supply unit 2 is not applied to the DC high voltage supply unit 2 or the DC high current supply unit 3,
  • the DC high voltage supply unit 2 prevents the high voltage resistance 200 from flowing back of the high voltage and low current, and the DC high current supply unit 3 is insulated from the insulation separation transformer 500. This prevents the high voltage low current from flowing into the DC high current supply unit 3.
  • the design cost of the test apparatus required for simultaneously applying the high voltage low current and the low voltage high current power supply of DC may be reduced.
  • the high voltage of DC is applied in direct contact, and the high current is applied in an inductive manner
  • the aluminum or metal material is wrapped around the conductor of the superconducting cable and the submarine cable, so that current loss occurs due to the magnetic induction eddy current due to the alternating current.
  • the DC high voltage power device 1 according to the present invention can be applied by directly contacting the superconducting cable and the submarine cable in both high voltage and high current, and can meet the load test conditions. will be.
  • the AC DC converter 410 can reduce the cost required for the construction of the facility by requiring a low voltage high current performance value In addition, it is effective to improve the reliability of DC load test by directly applying high voltage and high current of DC directly to the test object (submarine cable and superconducting cable).

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  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

The present invention relates to a device for testing a load of a superconducting high-voltage DC cable and, more specifically, to a device for testing a load of a superconducting high-voltage DC cable, which can perform a test by simultaneously applying high-voltage DC power and high-current DC power in a direct contact manner so as to test a superconducting cable to which a high DC voltage is to be applied, and which has low design costs.

Description

직류고전압 초전도케이블 부하시험 장치DC High Voltage Superconducting Cable Load Tester
본 발명은 직류고전압 초전도케이블 부하시험 장치에 관한 것으로, 보다 상세하게는 직류의 고전압이 인가되는 초전도케이블을 시험하기 위해 직류의 고전압 전원과 직류의 고전류 전원을 동시에 직접 접촉하여 인가하여 시험을 수행할 수 있으며, 설계비용이 저렴한 직류고전압 초전도케이블 부하시험 장치에 관한 것이다.The present invention relates to a DC high voltage superconducting cable load test device, and more specifically, to test a superconducting cable to which a high voltage of DC is applied, the DC high voltage power supply and the DC high current power supply are directly contacted and applied simultaneously. The present invention relates to a DC high voltage superconducting cable load tester which can be designed and inexpensive.
본 발명은 2012년 09월 18일 출원된 한국특허출원 제10-2012-0103181호 및 2012년 09월 19일 출원된 한국특허출원 제10-2012-0104127호의 출원일의 이익을 주장하며, 그 내용 전부는 본 명세서에 포함된다.The present invention claims the benefit of the date of application of Korean Patent Application No. 10-2012-0103181, filed on September 18, 2012 and Korean Patent Application No. 10-2012-0104127, filed on September 19, 2012 Is included herein.
종래 고전압 직류 전력기기의 직류부하시험을 수행하기 위해서는 직류 전압과 직류 전류를 동시에 인가하기 어렵기 때문에 직류 전압원과 직류 전류원을 독립적으로 구성하여 직류 전압 및 직류 전류를 인가하여 시험을 수행하였다.In order to perform the DC load test of the conventional high voltage DC power equipment, it is difficult to apply the DC voltage and the DC current at the same time, so the DC voltage source and the DC current source are independently configured to perform the test by applying the DC voltage and the DC current.
그러나, 초고압 직류 케이블과 같이 전압과 전류를 동시에 인가하여 부하시험특성을 수행히야 하는 경우에는 직류 전압원을 인가한 상태에서 전류를 통한 초고압 직류케이블의 시험조건인 도체온도 발생 및 유지를 하기 위해 직류 전압과 독립된 비접촉식 유도형 교류전류공급장치를 사용하여 직류부하 시험을 수행하고 있다.However, if it is necessary to apply the voltage and current at the same time as the ultra high voltage DC cable to perform the load test characteristic, the DC voltage is used to generate and maintain the conductor temperature which is the test condition of the ultra high voltage DC cable through the current with the DC voltage source applied. DC load test is performed using a non-contact inductive AC current supply independent from
상기와 같은 시험방법은 직류 초전도케이블과 직류 해저케이블처럼 도체 외부에 알루미늄 또는 유사한 금속재료가 설치되어 있는 경우에는 해저케이블의 경우에는 교류전류에 의한 자기유도 와전류 등에 의한 전류손실이 발생하여 해저케이블의 외각층의 온도가 높아지는 경우가 발생할 수 있다.As described above, when aluminum or similar metal materials are installed outside the conductor, such as DC superconducting cables and DC submarine cables, current losses due to magnetic induction eddy currents due to AC current are generated in the case of submarine cables. The case where the temperature of the outer layer becomes high may occur.
한편, 직류 초전도케이블의 경우에는 교류전류로 인한 교번자계의 영향으로 교류손실이 발생함으로써 초전도케이블의 성능에 매우 큰 영향을 미치기 때문에 부하전류가 교류가 아닌 직류의 전류를 인가하여야 할 필요가 있다.On the other hand, in the case of a DC superconducting cable, the AC loss is generated due to the alternating magnetic field caused by the alternating current, which greatly affects the performance of the superconducting cable. Therefore, it is necessary to apply a DC current instead of AC.
즉, 고전압 상태에서 교류가 아닌 직류 부하전류가 직접 전력기기에 접촉하여 인가되는 부하전류시험이 요구되는데, 직류전류 발생의 경우 교류와는 달리 기존의 직류 전압과 독립된 유도에 의한 비접촉식 전류인가가 불가능하므로 직류 고전압이 인가된 상태에서 직접 접촉 방식으로 직류전류를 공급하여야 한다.In other words, a load current test in which a direct current load is applied to the power device instead of an alternating current in a high voltage state is required.In the case of a direct current generation, unlike an alternating current, it is impossible to apply a non-contact current by induction independent of the existing direct voltage. Therefore, DC current should be supplied in direct contact with DC high voltage.
이와 관련한 선행기술로는 한국공개특허 제2005-0029599호 전력케이블 침수과통전 시험장치(2005.03.23. 공개)가 있다.The prior art related to this is Korea Patent Publication No. 2005-0029599 power cable immersion and conduction test device (published on March 23, 2005).
본 발명은 상기와 같은 문제를 해결하기 위하여 안출된 것으로, The present invention has been made to solve the above problems,
본 발명은, 초전도케이블과 같은 직류고전압 전력장치의 직류부하 시험을 수행하기 위해 직류의 고전압 및 고전류 전원을 동시에 인가하되, 직접 접촉하여 인가할 수 있는 직류고전압 초전도케이블 부하시험 장치를 제공하는데 목적이 있다.An object of the present invention is to provide a DC high voltage superconducting cable load test apparatus that can be applied by direct contact, while applying a DC high voltage and a high current power supply at the same time to perform a DC load test of a DC high voltage power device such as a superconducting cable. have.
본 발명의 다른 목적은 초전도케이블에 직류부하 시험 시 직류의 고전류 전원을 인가하기 위하여 직류고전류 발생기가 1000볼트(V) 미만의 시험전압을 견딜 수 있으면 되므로써, 절연설계에 있어서 제작 비용이 절감되고, 시험장치의 부피 증가를 초래하지 않는 직류고전압 초전도케이블 부하시험 장치를 제공하는데 목적이 있다.Another object of the present invention is to reduce the manufacturing cost in the insulation design, because the DC high current generator can withstand the test voltage of less than 1000 volts (V) in order to apply the high current power of the DC in the DC load test to the superconducting cable, It is an object of the present invention to provide a DC high voltage superconducting cable load test apparatus that does not cause an increase in the volume of the test apparatus.
본 발명의 또 다른 목적은 직류부하 시험 수행 시 교류의 고전류를 유도하여 인가하지 않고 직류의 고전류를 직접 접촉하여 인가함으로써 교류의 고전류를 유도하여 시험할 때와 같이 직류고전압 전력장치의 부분적인 영역에서 시험을 수행하지 않고 상기 직류고전압 전력장치의 전체에서 직류부하 시험을 수행할 수 있는 직류고전압 초전도케이블 부하시험 장치를 제공하는데 있다.Still another object of the present invention is to induce a high current of direct current by directly contacting and applying a high current of direct current, instead of inducing and applying a high current of alternating current. The present invention provides a DC high voltage superconducting cable load test apparatus capable of performing a DC load test on the entire DC high voltage power device without performing the test.
본 발명의 또 다른 목적은, 직류고전압 전력장치에 직류의 고전류를 인가하기 위하여 고전압 고전류의 성능치가 요구되는 교류직류 변환기를 대신하여 저전압 고전류의 성능치가 요구되는 교류직류 변환기를 이용함으로써 설비비용을 절감할 수 있는 직류고전압 초전도케이블 부하시험 장치를 제공하는데 있다.It is still another object of the present invention to reduce the installation cost by using an AC DC converter requiring a low voltage high current performance value in place of an AC DC converter requiring a high voltage high current performance value to apply a DC high current to a DC high voltage power device. To provide a DC high voltage superconducting cable load tester capable of.
상기한 과제를 해결하기 위하여,In order to solve the above problems,
본 발명은 피시험체에 전기적으로 연결되는 제1단자로 직류의 고전압저전류 전원을 인가하는 직류고전압 발생기 및 교류의 저전압고전류 전원을 생산한 후 직류의 저전압고전류 전원으로 변환하여 상기 제1단자에 연결되는 제2단자로 직류의 저전압고전류 전원을 인가하며, 상기 제1,2 단자와는 별도로 상기 피시험체와 전기적으로 연결되는 제3단자가 구비되는 직류고전류 발생기를 포함하며, 상기 직류고전류 발생기는, 지면에 접지되고, 상기 직류고전류 발생기에서 직류의 저전압고전류 전원을 생산하기 위한 구동력을 제공하는 저전압부와, 상기 저전압부로부터 구동력을 제공받아 직류의 저전압고전류 전원을 생산하는 고전압부 및 상기 저전압부와 고전압부 사이에 배치되어 절연상태를 유지하면서 상기 저전압부의 구동력을 고전압부로 전달하는 절연부가 구비된다.The present invention produces a DC high voltage generator for applying a DC high voltage low current power to the first terminal electrically connected to the test object and a low voltage high current power of AC and converts the DC low voltage high current power to the first terminal. Applying a low voltage high current power supply of direct current to the second terminal to be, and includes a DC high current generator having a third terminal electrically connected to the test object separately from the first and second terminals, the DC high current generator, A low voltage unit grounded to the ground and providing a driving force for producing a low voltage high current power source of DC in the DC high current generator; a high voltage unit and the low voltage unit receiving a driving power from the low voltage unit to produce a low voltage high current power source of DC; It is disposed between the high voltage section to transfer the driving force of the low voltage section to the high voltage section while maintaining the insulation state It is provided with supplementary insulation.
상기 저전압부는, 상기 직류고전류 발생기에 제어신호를 송신하는 제어부 및The low voltage unit, a control unit for transmitting a control signal to the DC high current generator;
상기 제어부의 제어신호를 수신하여 회전축을 회전시키는 구동모터가 구비되고, 상기 고전압부는, 상기 저전압부로부터 구동력을 제공받아 교류의 저전압고전류 전원을 생산하는 발전기와, 상기 발전기로부터 전원을 공급받으며, 상기 저전압부로부터 제어신호를 수신하는 컨트롤러 및 상기 컨트롤러에 의해 제어되어 상기 발전기에서 생산되는 교류의 저전압고전류 전원을 직류의 저전압고전류로 변환하는 교류직류 변환기가 구비되며, 상기 절연부는, 상기 고전압부와 저전압부를 절연상태를 유지하면서 서로 이격되도록 지지하는 절연지지애자 및 상기 저전압부에서 생성되는 구동력을 절연상태를 유지하여 상기 고전압부로 전달하는 동력전달축이 구비된다.A drive motor is provided to receive a control signal of the control unit to rotate a rotating shaft, wherein the high voltage unit receives a driving force from the low voltage unit to produce a low voltage high current power of AC, and receives power from the generator, A controller for receiving a control signal from a low voltage unit and an AC direct current converter, which is controlled by the controller and converts the low voltage high current power of the AC produced by the generator into a low voltage high current of DC, the insulation unit includes the high voltage unit and the low voltage. An insulation support insulator supporting the parts to be spaced apart from each other while maintaining the insulation state, and a power transmission shaft for transmitting the driving force generated in the low voltage portion to the high voltage portion while maintaining the insulation state.
상기 직류고전압 발생기에서 발생되는 직류의 고전압저전류 전원의 전압은 750V를 초과하며, 상기 고전압부의 전압은 상기 직류고전압 발생기로부터 인가되는 직류의 고전압저전류 전원을 기준전압으로 하는 0초과 750V 이하의 전압이고, 상기 저전압부의 전압은 접지된 지면을 기준전압으로 하는 0초과 750V 이하의 전압인 것을 특징으로 한다.The voltage of the DC high voltage low current power source generated by the DC high voltage generator exceeds 750 V, and the voltage of the high voltage unit is a voltage of 0 seconds or more and 750 V or less, which is a DC high voltage low current power source applied from the DC high voltage generator as a reference voltage. The voltage of the low voltage unit is characterized in that the voltage of 0 seconds or more and 750V or less with the grounded ground as the reference voltage.
상기 교류직류 변환기는, 상기 발전기로부터 인가되는 전원을 1 내지 100 V 미만의 전압으로 변압하는 감압부와, 상기 감압부로부터 변압된 전원을 인가받아 교류전원을 직류전원으로 변환하는 복수의 트랜스부와, 상기 복수의 트랜스부에 연결되어 상기 제2단자 및 제3단자에 각각 연결되는 한 쌍의 도전부 및 상기 교류직류 변환기 내부 상태를 감시하는 진단부가 구비된다.The AC DC converter may include a decompression unit for transforming power applied from the generator to a voltage of less than 1 to 100 V, a plurality of transformer units for converting AC power into DC power by receiving power transformed from the decompression unit; And a pair of conductive parts connected to the plurality of transformer parts and connected to the second terminal and the third terminal, respectively, and a diagnostic part for monitoring an internal state of the AC DC converter.
고전압의 직류전류를 인가하여 직류고전압 전력장치의 직류부하를 시험하는 장치에 있어서, 지면에 접지된 상기 직류고전압 전력장치에 직접 접촉되어 각각 직류 고전압과 직류 고전류를 인가하는 직류 고전압 공급부와 직류 고전류 공급부를 포함하며, 상기 직류 고전류 공급부는 지면에 접지되어 교류의 저전압 고전류를 생산하는 저전압부와, 상기 저전압부에 전기적으로 연결되는 절연분리변압기 및 상기 저전압부로부터 교류의 저전압 고전류를 인가받은 절연분리변압기에서 유도되는 전원을 공급받아 직류의 저전압 고전류를 생산하는 고전압부를 포함하고, 상기 직류 고전압 공급부는 단일한 전원공급선을 통하여 직류의 고전압을 인가하고, 상기 직류 고전류 공급부는 복수의 전원공급선을 통하여 직류의 고전류를 인가하고, 상기 고전압부는 상기 직류 고전류 공급부에 연결되는 복수의 전원공급선 사이의 전압차이의 값을 포함하는 범위의 전압성능치를 갖는 저전압 교류직류 변환기가 구비되고, 상기 고전압부는 상기 직류 고전압 공급부를 기준전압으로 하여 750V를 초과하는 전압이 발생되고, 상기 저전압부는 접지된 지면을 기준전압으로 하여 0 초과 750V 이하의 전압이 발생된다.An apparatus for testing a direct current load of a direct current high voltage power supply by applying a high voltage direct current, the direct current contacting the direct current high voltage power supply connected to the ground and applying a direct current high voltage and direct current And a low voltage part which is grounded to the ground to produce a low voltage high current of AC, an isolation isolation transformer electrically connected to the low voltage part, and an isolation isolation transformer applied with a low voltage high current of AC from the low voltage part. A high voltage unit configured to receive a low voltage high current supplied from a power source induced by the power supply unit, the high voltage supply unit applying a high voltage of direct current through a single power supply line, and the direct current high current supply unit supplying a direct current through a plurality of power supply lines Applying a high current, the high voltage unit A low voltage AC DC converter having a voltage performance value including a value of a voltage difference between a plurality of power supply lines connected to the DC high current supply unit is provided, wherein the high voltage unit exceeds 750V using the DC high voltage supply unit as a reference voltage. A voltage is generated, and the low voltage unit generates a voltage greater than 0 and less than or equal to 750 V based on the grounded ground.
고전압의 직류전류를 인가하여 직류고전압 전력장치의 직류부하를 시험하는 장치에 있어서, 상기 직류고전압 전력장치에 통전 가능하도록 직접 접촉되어 직류의 고전압을 공급하는 직류 고전압 공급부 및 상기 직류고전압 전력장치에 통전 가능하도록 직접 접촉되어 고전류의 직류전류를 공급하는 직류 고전류 공급부를 포함하되, 상기 직류 고전압 공급부에서 상기 직류고전압 전력장치로 직류의 고전압을 인가하는 전원공급선은 단일 선으로 구비되고, 상기 직류 고전류 공급부에서 상기 직류고전압 전력장치로 직류의 고전류를 인가하는 또 다른 전원공급선은 직류의 고전류가 인풋(input) 및 아웃풋(output) 되는 복수의 선으로 구비되며, 상기 직류 고전압 공급부는, 전원을 인가받아 3상교류전류를 정류기를 이용하여 고전압 저전류를 발생하는 직류 고전압원부 및 상기 직류 고전압원부로부터 발생한 고전압 저전류를 인가받아 상기 직류고전압 전력장치에 공급하는 고전압저항이 구비되고, 상기 직류 고전류 공급부는, 지면에 접지되는 저전압부와, 상기 직류고전압 전력장치에 통전 가능하게 연결되는 고전압부 및 상기 저전압부와 고전압부가 절연되도록 하며, 상기 저전압부로부터 교류전원을 인가받아 고전압 교류전원을 발생하는 절연분리변압기로 구비된다.A device for testing a direct current load of a direct current high voltage power supply by applying a high voltage direct current, the direct current being directly contacted to enable the direct current high voltage power supply to supply a direct current high voltage and a direct current supply to the direct current high voltage power supply. A direct current high current supply unit which is directly contacted to supply a high current direct current, wherein a power supply line for applying a high voltage of direct current from the direct current high voltage supply unit to the direct current high voltage power device is provided as a single line, and in the direct current high current supply unit Another power supply line for applying a high current of DC to the DC high voltage power device is provided with a plurality of lines that the high current of the DC input and output (output), the DC high voltage supply unit is applied to the power three-phase DC to generate high voltage and low current by using AC current rectifier A high voltage resistor for supplying a high voltage source and a high voltage low current generated from the DC high voltage source to the DC high voltage power device is provided. The DC high current supply unit includes a low voltage unit grounded to the ground, and a DC high voltage power device. The high voltage unit and the low voltage unit and the high voltage unit to be connected to each other is provided, and is provided with an isolation separation transformer for generating a high voltage AC power by receiving AC power from the low voltage unit.
상기 저전압부는, 상기 직류 고전류 공급부를 제어하는 제어반과, 상기 제어반에 연결되어 제어신호를 송수신하는 제1통신부 및 상기 제1통신부에 연결되어 제어신호를 수신하여 교류전원을 발생하며, 상기 절연분리변압기로 교류전원을 인가하는 교류전원부를 구비한다.The low voltage unit includes a control panel for controlling the DC high current supply unit, a first communication unit connected to the control panel and a control signal connected to the first communication unit, and receiving an control signal to generate an AC power source, wherein the insulation separation transformer AC power supply unit for applying an AC power supply.
상기 고전압부는, 상기 절연분리변압기에 연결되어 절연분리변압기에서 발생한 고전압 교류전원을 공급받아 저전압 고전류를 생성하는 교류직류 변환기와, 상기 교류직류 변환기와 통전 가능하게 연결되어 상기 직류고전압 전력장치에 상기 교류직류 변환기에서 생성된 저전압 고전류를 인가하며, 이 때 인가하는 저전압 고전류를 모니터링 및 제어하는 전압탭부와, 상기 교류직류 변환기 및 전압탭부와 연결되어 출력을 제어하고 측정하며, 상기 전압탭부의 모니터링 데이터를 수신하는 컨트롤부 및 상기 저전압부로부터 제어신호를 수신하여 상기 컨트롤부를 제어하며, 상기 컨트롤부에 수집된 데이터를 저전압부로 송신하는 제2통신부를 구비하고, 상기 교류직류 변환기는, 상기 직류 고전류 공급부에 연결되는 복수의 전원공급선 사이의 전압차이가 상기 컨트롤부에 의해 측정되며, 상기 전압차이 값이 상기 교류직류 변환기에 요구되는 전압성능치 이내의 범위에 포함된다.The high voltage unit is connected to the isolation transformer, and receives a high voltage AC power generated from the isolation transformer to generate a low voltage high current, and the AC direct current converter is connected to the DC high voltage power device so as to conduct electricity The low voltage high current generated by the DC converter is applied, and the voltage tap unit for monitoring and controlling the low voltage high current applied at this time is connected to the AC DC converter and the voltage tap unit to control and measure the output, and to monitor the monitoring data of the voltage tap unit. And a second communication unit configured to receive a control signal from the control unit and the low voltage unit to control the control unit, and to transmit data collected to the control unit to the low voltage unit, wherein the AC DC converter includes the DC high current supply unit. Voltage difference between multiple power supply lines connected Is measured by the control unit, and the voltage difference value is included in a range within a voltage performance value required for the AC DC converter.
상기 고전압부는 상기 저전압부로부터 제어신호를 수신하고, 상기 고전압부에 수집되는 데이터는 상기 저전압부로 송신된다.The high voltage unit receives a control signal from the low voltage unit, and the data collected in the high voltage unit is transmitted to the low voltage unit.
상기 절연분리변압기는, 내부에 공간부가 형성되는 절연실린더와, 상기 절연실린더의 내부에서 서로 마주보도록 이격되어 설치되는 고정프레임과, 상기 서로 마주보는 고정프레임을 서로 연결하며, 상기 고정프레임에서 상하로 설치되는 복수개의 철심과, 상기 복수개의 철심 중 하부의 철심에 권선되며, 상기 저전압부로부터 저전압의 교류전원을 인가받는 1차코일과, 상기 복수개의 철심 중 상부의 철심에 권선되며, 상기 1차코일로부터 유도되는 고전압 교류전원을 상기 고전압부에 인가하는 2차코일 및 상기 1차코일과 2차코일 사이에서 상기 서로 마주보는 고정프레임을 서로 연결하도록 설치되는 절연지지대를 구비한다.The insulation separation transformer is connected to each other between an insulating cylinder having a space formed therein, a fixed frame spaced apart from each other to face each other inside the insulating cylinder, and the fixed frame facing each other, and vertically up and down in the fixed frame. A plurality of iron cores installed, a primary coil wound around a lower core among the plurality of iron cores, a primary coil receiving a low voltage AC power from the low voltage unit, and a primary coil wound around an upper core of the plurality of iron cores, And a secondary coil for applying a high voltage AC power induced from a coil to the high voltage part, and an insulating support provided to connect the fixing frames facing each other between the primary coil and the secondary coil.
상기 절연분리변압기는, 상기 절연지지대에 권선되는 절연지와, 상기 절연실린더의 공간부에 충진되는 절연부재 및 상기 절연실린더의 하단에 결합되는 베이스가 더 구비된다.The insulation separation transformer further includes an insulation paper wound on the insulation support, an insulation member filled in the space portion of the insulation cylinder, and a base coupled to a lower end of the insulation cylinder.
상기 절연실린더는, 상기 절연실린더의 외주면에서 돌출형성되는 복수의 스커트가 형성된다.The insulating cylinder is provided with a plurality of skirts protruding from the outer circumferential surface of the insulating cylinder.
상기 절연부재는 유체인 것을 특징으로 한다.The insulating member is characterized in that the fluid.
상기 절연부재는, 상기 공간부에 완충되지 않고 상기 절연실린더의 내부에서 상부에 여유공간이 형성되도록 충진된다.The insulating member is filled so that a free space is formed in the upper portion of the insulating cylinder without being buffered in the space part.
상기 베이스는, 상기 절연실린더의 공간부와 연통되는 유로 및 상기 베이스의 외면에 구비되어 상기 유로를 개폐하는 덮개부가 구비된다.The base includes a flow path communicating with the space portion of the insulating cylinder and a cover part provided on an outer surface of the base to open and close the flow path.
상기 절연지는, 상기 절연지지대의 외면에서 수평 및 수직의 혼합형태로 권선되는 것을 특징으로 한다.The insulating paper is characterized in that the winding on the outer surface of the insulating support in a mixed form of horizontal and vertical.
상기 절연실린더는, 상기 절연실린더의 외면을 감싸도록 설치되는 복수의 밴드를 더 구비한다.The insulating cylinder further includes a plurality of bands provided to surround an outer surface of the insulating cylinder.
상기 직류부하 시험장치는, 상기 직류 고전압 공급부와 직류 고전류 공급부로부터 피드백 신호를 송수신하는 안전회로부를 더 구비한다.The DC load test apparatus further includes a safety circuit unit configured to transmit and receive a feedback signal from the DC high voltage supply unit and the DC high current supply unit.
상기 고전압부는 상기 직류 고전압 공급부를 기준전압으로 하여 750V를 초과하는 전압이 발생되고, 상기 저전압부는 접지된 지면을 기준전압으로 하여 0 초과 750V 이하의 전압이 발생된다.The high voltage unit generates a voltage exceeding 750 V using the DC high voltage supply unit as a reference voltage, and the low voltage unit generates a voltage greater than 0 and less than 750 V using the grounded ground as the reference voltage.
상기와 같은 과제의 해결 수단에 의하여 본 발명은 The present invention by the means for solving the above problems
본 발명은 초전도케이블과 같은 직류고전압 전력장치의 직류부하 시험을 수행하기 위해 직류의 고전압 및 고전류 전원을 동시에 직접 접촉하여 인가한 상태로 직류부하 시험을 수행할 수 있는 효과가 있다.The present invention has the effect of performing a direct current load test in a state in which the direct contact of the high voltage and high current power supply of direct current at the same time in order to perform a direct current load test of a direct current high voltage power device such as a superconducting cable.
그리고, 본 발명은 초전도케이블에 직류부하 시험 시 직류의 고전류 전원을 인가하기 위하여 직류고전류 발생기가 1000볼트(V) 미만의 시험전압을 견딜 수 있으면 됨으로써, 절연설계에 있어서 제작비용이 절감되고, 시험장치의 부피 증가를 초래하지 않는 효과도 있다.In addition, in the present invention, the DC high current generator needs to withstand a test voltage of less than 1000 volts (V) in order to apply a DC high current power supply to the superconducting cable during the DC load test, thereby reducing the manufacturing cost in the insulation design and testing There is also an effect that does not result in an increase in the volume of the device.
본 발명은 직류부하 시험 수행 시 교류의 고전류를 유도하여 인가하지 않고 직류의 고전류를 직접 접촉하여 인가함으로써 교류의 고전류를 유도하여 시험할 때와 같이 직류고전압 전력장치의 부분적인 영역에서 시험을 수행하지 않고 상기 직류고전압 전력장치의 전체에서 직류부하 시험을 수행할 수 있어 직류부하 시험 결과의 신뢰성을 향상시킬 수 있는 효과도 있다.The present invention does not perform a test in a partial region of a DC high voltage power device as in the case of performing a DC load test, inducing and applying a high current of AC by directly contacting and applying a high current of DC, instead of inducing and applying a high current of AC. The DC load test can be performed in the entire DC high voltage power device without the effect of improving the reliability of the DC load test result.
본 발명은 직류고전압 전력장치에 직류의 고전류를 인가하기 위하여 고전압 고전류의 성능치가 요구되는 교류직류 변환기를 대신하여 저전압 고전류의 성능치가 요구되는 교류직류 변환기를 이용함으로써 설비비용을 절감할 수 있는 효과도 있다.The present invention is effective to reduce the equipment cost by using an AC DC converter requiring a low voltage high current performance value in place of an AC DC converter requiring a high voltage high current performance value to apply a DC high current to the DC high voltage power device. have.
도 1은 본 발명에 따른 직류고전압 초전도케이블 부하시험 장치의 제1실시예를 개략적으로 도시한 도면.1 is a view schematically showing a first embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention.
도 2는 도 1의 직류고전류 발생기를 개략적으로 도시한 도면.FIG. 2 is a schematic view of the DC high current generator of FIG. 1. FIG.
도 3은 도 2에 따른 직류고전류 발생기의 구성을 도시한 도면.3 is a diagram illustrating a configuration of a DC high current generator according to FIG. 2.
도 4는 도 3에 따른 교류직류 변환기의 내부 구성을 도시한 도면.4 is a diagram illustrating an internal configuration of the AC DC converter according to FIG. 3.
도 5는 도 4에 따른 교류직류 변환기에 연결되는 초전도케이블을 도시한 도면.5 shows a superconducting cable connected to the AC DC converter according to FIG. 4;
도 6은 본 발명에 따른 직류고전압 초전도케이블 부하시험 장치의 제2실시예를 개략적으로 도시한 도면.Figure 6 schematically shows a second embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention.
도 7은 도 6에 도시된 직류 고전압 공급부를 도시한 도면.FIG. 7 is a view showing a DC high voltage supply unit shown in FIG. 6.
도 8은 도 6에 따른 직류 고전류 공급부를 도시한 도면.8 is a view showing a direct current high current supply unit according to FIG.
도 9는 도 8에 따른 절연분리변압기를 도시한 도면.9 is a view showing the isolation transformer according to FIG. 8.
도 10은 도 9에 따른 절연분리변압기의 내부를 도시한 도면.10 is a view showing the interior of the isolation transformer according to FIG.
도 11은 도 6에 도시된 직류고전압 초전도케이블 부하시험 장치의 사용예를 도시한 도면.11 is a view showing an example of use of the DC high voltage superconducting cable load test apparatus shown in FIG.
본 발명을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
여기서, 반복되는 설명과 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다.Here, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the repeated description and the gist of the present invention will be omitted.
그리고 본 발명의 실시형태는 당 업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해 제공되는 것이다.And embodiments of the present invention is provided to more completely explain the present invention to those skilled in the art.
따라서, 도면에서의 요소들의 형상 및 크기 등은 보다 명확한 설명을 위해 과장될 수 있다.Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.
실시예1Example 1
도 1은 본 발명에 따른 직류고전압 초전도케이블 부하시험 장치의 제1실시예를 개략적으로 도시한 도면이고, 도 2는 도 1의 직류고전류 발생기를 개략적으로 도시한 도면이며, 도 3은 도 2에 따른 직류고전류 발생기의 구성을 도시한 도면이고, 도 4는 도 3에 따른 교류직류 변환기의 내부 구성을 도시한 도면이며, 도 5는 도 4에 따른 교류직류 변환기에 연결되는 초전도케이블을 도시한 도면이다.1 is a view schematically showing a first embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention, FIG. 2 is a view schematically showing the DC high current generator of FIG. 1, FIG. 4 is a diagram illustrating a configuration of a DC high current generator according to an embodiment of the present invention. FIG. 4 is a diagram illustrating an internal configuration of the AC DC converter according to FIG. 3, and FIG. 5 is a diagram of a superconducting cable connected to the AC DC converter according to FIG. 4. to be.
직류의 고전압고전류 전원이 인가되는 피시험체의 직류부하 시험을 하기 위하여 상기 피시험체에 전기적으로 연결되는 제1단자(10)로 직류의 고전압저전류 전원을 인가하는 직류 고전압 공급부(2) 및 교류의 저전압고전류 전원을 생산하여 상기 제1단자(10)에 연결되는 제2단자(20)로 직류의 저전압고전류 전원을 인가하며, 상기 제1,2단자(10,20)와는 별도로 상기 피시험체와 전기적으로 연결되는 제3단자(30)가 구비되는 직류 고전류 공급부(3)를 포함한다.In order to perform a direct current load test of a test subject to which a direct current high voltage high current power is applied, a direct current high voltage supply unit (2) for supplying a high voltage low current power supply to the first terminal (10) electrically connected to the test subject and Produces a low voltage high current power and applies a DC low voltage high current power to the second terminal 20 connected to the first terminal 10, and electrically separates the test object from the first and second terminals 10 and 20. DC high current supply unit 3 is provided with a third terminal 30 connected to the.
본 발명에서 상기 직류 고전압 공급부(2)에서 생산되는 직류의 고전압고전류 전원의 전압은 750V를 초과하고, 상기 저전압부(300)에는 접지된 지면을 기준전압으로 하여 0 초과 750V 이하의 전압을 갖는 전원이 인가되며, 상기 고전압부(400)에서는 상기 직류 고전압 공급부(2)에서 인가되는 전압이 750V를 초과하는 고전압저전류 전원을 기준전압으로 하는 0 초과 750V 이하의 전압을 갖는 교류의 저전압고전류 전원이 생산된다.In the present invention, the voltage of the DC high voltage high current power supply produced by the DC high voltage supply unit 2 exceeds 750V, and the power supply having a voltage above 0 and below 750V using the grounded ground as the reference voltage in the low voltage unit 300. In the high voltage unit 400, a low voltage high current power supply of AC having a voltage of more than 0 and less than 750 V, which uses a high voltage low current power supply of more than 750 V as a reference voltage, is applied in the high voltage unit 400. Produced.
상기 저전압부(300) 및 고전압부(400)의 전압 분류는, 교류의 경우 저전압은 0V 초과 600V 이고, 고전압은 600V 초과 7,000V 이하인 전압이다. 그리고 직류의 경우 저전압은 0V 초과 750V 이고, 고전압은 750V 초과 7,000V 이하인 전압이다.In the voltage classification of the low voltage unit 300 and the high voltage unit 400, in the case of an alternating current, the low voltage is more than 0V and 600V, and the high voltage is more than 600V and 7,000V or less. In the case of direct current, the low voltage is more than 0V and 750V, and the high voltage is more than 750V and 7,000V or less.
한편, 교류 및 직류 모두 7000V 초과 66,000V 이하는 특고압이라 하고, 66,000V 초과 220,000V 이하는 초고압이라 한다.On the other hand, AC and DC both exceed 7000V and below 66,000V are called high voltages, and above 66,000V and below 220,000V are referred to as high voltages.
본 발명에서는 상기 고전압부(400)의 기준전압이 750V를 초과하는 것으로써 상술한 고전압과 특고압 및 초고압의 전압을 포함할 수 있다.In the present invention, the reference voltage of the high voltage unit 400 is greater than 750V and may include the above-described high voltage, extra high voltage, and ultra high voltage.
상기 피시험체는 직류의 고전압고전류 전원이 인가되는 것으로서, 본 발명에서는 초전도케이블(a)을 그 예로 하였다.The test object is a high-voltage, high-current power supply of direct current, the superconducting cable (a) in the present invention as an example.
상기 직류 고전압 공급부(2)는 상기 제1단자(10)를 통하여 상기 피시험체인 초전도케이블(a)에 직류의 고전압저전류 전원을 인가하는 것이다.The DC high voltage supply unit 2 applies a DC high voltage low current power supply to the superconducting cable a, which is the test object, through the first terminal 10.
상기 직류 고전류 공급부(3)는 도 2를 참조하면, 교류의 저전압고전류 전원을 생산하여 직류의 저전압고전류 전원으로 변환한 다음, 상기 제1단자(10)에 연결되는 제2단자(20)로 직류의 저전압고전류 전원을 인가하며, 상기 초전도케이블(a)에 직류의 저전압고전류 전원이 통전될 수 있도록 상기 제1,2단자(10,20)와는 별도로 제3단자(30)가 구비되는 것이다.Referring to FIG. 2, the DC high current supply unit 3 generates an AC low voltage high current power source, converts it into a DC low voltage high current power source, and then directs DC to a second terminal 20 connected to the first terminal 10. The low voltage high current power is applied, and the third terminal 30 is provided separately from the first and second terminals 10 and 20 so that the DC low voltage high current power is supplied to the superconducting cable a.
도 3을 참조하여 상기 직류 고전류 공급부(3)를 더욱 상세하게 설명하면, 상기 직류 고전류 공급부(3)는 지면에 접지되고, 상기 직류 고전류 공급부(3)에서 직류의 저전압고전류 전원을 생산하기 위한 구동력을 제공하는 저전압부(300)와, 상기 저전압부(300)로부터 구동력을 제공받아 직류의 저전압고전류 전원을 생산하는 고전압부(400) 및 상기 저전압부(300)와 고전압부(400) 사이에 배치되어 절연상태를 유지하면서 상기 저전압부(300)의 구동력을 상기 고전압부(400)로 전달하는 절연부(600)가 구비된다.The DC high current supply unit 3 will be described in more detail with reference to FIG. 3. The DC high current supply unit 3 is grounded to the ground, and the driving force for producing a DC low voltage high current power supply from the DC high current supply unit 3. It is disposed between the low voltage unit 300 and the high voltage unit 400 and the low voltage unit 300 and the high voltage unit 400 to receive a driving force from the low voltage unit 300 to produce a low voltage high current power supply of direct current Insulation 600 is provided to transfer the driving force of the low voltage unit 300 to the high voltage unit 400 while maintaining the insulation state.
상기 저전압부(300)는 상기 직류 고전류 공급부(3)에 제어신호를 송수신하는 제어반(310) 및 상기 제어반(310)의 제어신호를 수신하여 회전축(341)을 회전시키는 구동모터(340)가 구비된다.The low voltage unit 300 is provided with a control panel 310 for transmitting and receiving a control signal to the DC high current supply unit 3 and a drive motor 340 for receiving a control signal of the control panel 310 to rotate the rotary shaft 341. do.
상기 제어반(310)는 작업자의 조작에 의한 신호는 유선 또는 무선으로 수신할 수 있으며, 상기 고전압부(400)를 제어하기 위한 신호는 절연상태를 유지하기 위하여 무선으로 송수신하는 것일 바람직하다.The control panel 310 may receive a signal by the operator's operation by wire or wirelessly, the signal for controlling the high voltage unit 400 is preferably to transmit and receive wirelessly to maintain the insulation state.
상기 구동모터(340)는 작업자가 유선 또는 무선으로 ON/OFF 신호를 상기 제어반(310)로 송신하면, 상기 제어반(310)는 상기 구동모터(340)를 작동시키거나, 또는 정지시킨다.When the operator transmits an ON / OFF signal to the control panel 310 by wire or wirelessly, the control panel 310 operates or stops the driving motor 340.
상기 고전압부(400)는 상기 저전압부(300)로부터 구동력을 제공받아 교류의 저전압고전류 전원을 생산하는 발전기(450)와, 상기 발전기(450)로부터 전원을 공급받으며, 상기 저전압부(300)로부터 제어신호를 수신하는 컨트롤러(430) 및 상기 컨트롤러(430)에 의해 제어되어 상기 발전기(450)에서 생산되는 교류의 저전압고전류 전원을 직류의 저전압고전류로 변환하는 교류직류 변환기(410)가 구비된다.The high voltage unit 400 receives a driving force from the low voltage unit 300 and generates a low voltage high current power source of alternating current, and receives power from the generator 450, from the low voltage unit 300. A controller 430 for receiving a control signal and an AC DC converter 410 controlled by the controller 430 to convert the low voltage high current power of the AC produced by the generator 450 into the low voltage high current of the DC are provided.
상기 발전기(450)는 상기 구동모터(340)의 작동에 따라 회전축(341)의 회전력을 제공받아 교류의 저전압고전류 전원을 생산하게 된다.The generator 450 receives the rotational force of the rotation shaft 341 according to the operation of the drive motor 340 to produce a low voltage high current power of AC.
상기 컨트롤러(430)는 상기 발전기(450)로부터 작동에 필요한 전원을 공급받으며, 상기 저전압부(300)의 제어반(310)로부터 제어신호를 무선으로 수신하여 상기 교류직류 변환기(410)를 제어하게 된다.The controller 430 receives power required for operation from the generator 450 and wirelessly receives a control signal from the control panel 310 of the low voltage unit 300 to control the AC DC converter 410. .
상기 교류직류 변환기(410)는 상기 발전기(450)로부터 작동에 필요한 전원을 공급받는 동시에 상기 발전기(450)에서 생산되는 교류의 저전압고전류 전원을 직류의 저전압고전류 전원으로 변환시킨다.The AC DC converter 410 receives power required for operation from the generator 450 and converts the AC low voltage high current power produced by the generator 450 into DC low voltage high current power.
여기에서, 상기 고전압부(400)에서 생산되는 상기 교류의 저전압고전류 및 직류의 저전압고전류의 기준전압은 상기 제2단자(20)가 연결되는 상기 제1단자(10)를 통하여 상기 직류 고전압 공급부(2)에서 인가되는 직류의 고전압저전류 전원의 전압을 기준전압으로 하게 되며, 상기 저전압부(300)는 접지된 지면을 기준전압으로 하게 된다.Here, the reference voltage of the low voltage high current of the alternating current and the low voltage high current of the DC produced by the high voltage unit 400 is connected to the DC high voltage supply unit through the first terminal 10 to which the second terminal 20 is connected. The voltage of the DC high voltage low current power source applied in 2) is used as the reference voltage, and the low voltage unit 300 uses the ground ground as the reference voltage.
상기 교류직류 변환기(410)는 상기 발전기(450)로부터 인가되는 전원을 1 내지 100V 미만의 전압으로 변압하는 감압부(411)와, 상기 감압부(411)로부터 변압된 전원을 인가받아 교류전원을 직류전원으로 변환하는 복수의 트랜스부(412) 및 상기 복수의 트랜스부(412)에 연결되어 상기 제2단자(20) 및 제3단자(30)에 각각 연결되는 한상의 도전부(413)가 구비된다(도 4 참조).The AC DC converter 410 receives a reduced pressure unit 411 for transforming the power applied from the generator 450 to a voltage of less than 1 to 100 V, and receives the transformed power from the reduced pressure unit 411 to supply AC power. The conductive part 413 of the one phase connected to the plurality of transformers 412 and the plurality of transformers 412 to be converted into DC power and connected to the second terminal 20 and the third terminal 30, respectively. (See FIG. 4).
본 발명에서 상기 발전기(450)는 상기 직류 고전압 공급부(2)에서 인가되는 직류의 고전압저전류 전원을 기준전압으로 하여 0초과 750V 이하인 교류의 저전압고전류 전원을 생산하게 되고, 이는 상기 감압부(411)에 의해 다시 1 내지 100V 미만인 교류의 저전압고전류 전원으로 감압된다.In the present invention, the generator 450 produces a low voltage high current power of AC which is greater than 0 and less than 750 V using a high voltage low current power of DC applied from the DC high voltage supplying part 2 as a reference voltage. ) Is further reduced to a low voltage high current power supply of alternating current of less than 1 to 100V.
상기 복수의 트랜스부(412)는 상기 감압부(411)에서 1 내지 100V 미만인 교류의 저전압고전류 전원을 1 내지 100V 미만인 직류의 저전압고전류 전원으로 변환시킨다.The plurality of transformers 412 converts a low voltage high current power source of an AC of less than 1 to 100 V into a low voltage high current power source of DC of less than 1 to 100 V in the decompression unit 411.
본 발명에서는 상기 감압부(411)에 의해 1 내지 10V 이하인 직류의 저전압고전류 전원으로 변환되도록 하여 상기 직류 고전류 공급부(3)가 견딜 수 있는 시험전압을 낮춤으로써 설계비용을 절감하였다.In the present invention, by reducing the test voltage that the DC high current supply unit 3 can withstand by reducing the test voltage to be converted to a DC low voltage high current power supply of 1 to 10V or less by the decompression unit 411.
이 때, 상기 교류직류 변환기(410)의 내부에서 발생되는 열을 외부로 발산하기 위해 상기 교류직류 변환기(410)는 외부에서 빗물 등의 수분의 유입을 방지하기 위해 측면이 관통되는 다수의 루버(415)가 형성되는 외부케이스(414)로 커버된다.In this case, in order to dissipate heat generated inside the AC converter 410 to the outside, the AC DC converter 410 has a plurality of louvers through which side surfaces are passed to prevent the inflow of moisture such as rainwater from the outside. 415 is covered with an outer case 414 is formed.
한편, 상기 교류직류 변환기(410)는 내부에서 온도 및 압력을 측정하여 고온 또는 고압이 발생되는 경우 상기 초전도케이블(a)에 전류공급을 중단하는 진단부(미도시)가 더 구비되어 상기 교류직류 변환기(410)의 회로를 보호하고 안전사고를 방지한다.On the other hand, the AC DC converter 410 is further provided with a diagnostic unit (not shown) for stopping the supply of current to the superconducting cable (a) when a high temperature or high pressure is generated by measuring the temperature and pressure therein the AC DC It protects the circuit of the converter 410 and prevents a safety accident.
상기 절연부(600)는 상기 고전압부(400)와 저전압부(300)를 절연상태를 유지하면서 서로 이격되도록 지지하는 절연지지애자(610) 및 상기 저전압부(300)에서 생성되는 구동력을 절연상태를 유지하여 상기 고전압부(400)로 전달하는 동력전달축(620)이 구비된다.The insulating part 600 maintains the high voltage part 400 and the low voltage part 300 while maintaining an insulating state, and insulates the driving force generated from the insulating support insulator 610 and the low voltage part 300. A power transmission shaft 620 is provided to maintain and transmit the same to the high voltage unit 400.
상기 절연지지애자(610)는 적어도 둘 이상으로 구비되어 상기 고전압부(400)와 저전압부(300)를 안정적으로 이격되게 지지하는 것이 바람직하다.The insulation support insulator 610 is preferably provided at least two to support the high voltage unit 400 and the low voltage unit 300 to be stably spaced apart.
상기 동력전달축(620)은 상기 저전압부(300)의 구동모터(340)의 작동에 따라 회전하는 회전축(341)에 일단이 결합되고, 상기 고전압부(400)의 발전기(450)에 타단에 결합되어 상기 저전압부(300)의 구동모터(340)에서 발생하는 구동력을 상기 고전압부(400)의 발전기(450)에 전달하게 된다.One end of the power transmission shaft 620 is coupled to a rotating shaft 341 that rotates according to the operation of the driving motor 340 of the low voltage unit 300, and the other end to the generator 450 of the high voltage unit 400. Coupled to transmit the driving force generated in the drive motor 340 of the low voltage unit 300 to the generator 450 of the high voltage unit 400.
여기에서, 상기 직류 고전압 공급부(2)에서 상기 고전압부(400)로 인가되는 직류의 고전압저전류 전원이 상기 동력전달축(620)을 통해 저전압부(300)로 인가되지 않도록 상기 동력전달축(620)은 상기 발전기(450)와 구동모터(340)를 연결하되, 절연상태가 유지되도록 연결되어야 한다.Here, the power transmission shaft (D) so that the DC high voltage low current power applied from the DC high voltage supply unit 2 to the high voltage unit 400 is not applied to the low voltage unit 300 through the power transmission shaft 620. 620 is connected to the generator 450 and the drive motor 340, it should be connected to maintain the insulation state.
도 1 및 5를 참조하여 본 발명에 따른 초전도케이블(a) 시험장치의 실시예를 설명하면 다음과 같다.Referring to Figures 1 and 5 will be described an embodiment of the superconducting cable (a) test apparatus according to the present invention.
상기 피시험체로써 초전도케이블(a)을 이용하여 초전도케이블(a)의 일단은 상기 고전압부(400)에 구비된 제2단자(20)에 연결하고, 초전도케이블(a)의 타단은 상기 고전압부(400)의 제3단자(30)에 연결한다. 이 때, 상기 제2단자(20)는 상기 직류 고전압 공급부(2)의 제1단자(10)와 전기적으로 연결되어 있어야 한다.One end of the superconducting cable (a) is connected to the second terminal 20 provided in the high voltage unit 400 using the superconducting cable (a) as the test object, and the other end of the superconducting cable (a) is the high voltage unit. The third terminal 30 of 400 is connected. In this case, the second terminal 20 should be electrically connected to the first terminal 10 of the DC high voltage supply unit 2.
상기 직류 고전압 공급부(2)를 작동시켜서 상기 고전압부(400)에 연결되는 상기 제1단자(10)를 통하여 상기 초전도케이블(a)의 일단에 전압이 750V를 초과하는 직류의 고전압저전류 전원을 인가한다.The DC high voltage supply unit 2 is operated to supply a DC high voltage low current power supply having a voltage greater than 750 V to one end of the superconducting cable a through the first terminal 10 connected to the high voltage unit 400. Is authorized.
여기에서, 상기 초전도케이블(a)에 상기 직류 고전압 공급부(2)에서 인가되는 직류의 고전압저전류 전원이 통전되려면 상기 초전도케이블(a)은 지면에 접지가 되어 있어야 한다.In this case, the superconducting cable (a) should be grounded to the ground in order for the superconducting cable (a) to be supplied with the high voltage low current power supply of the direct current applied from the direct current high voltage supply unit (2).
상기와 같이, 상기 초전도케이블(a)에 직류의 고전압저전류 전원을 인가함으로써 상기 초전도케이블(a)의 절연상태의 정상여부를 시험할 수 있다.As described above, it is possible to test whether the insulation state of the superconducting cable (a) is normal by applying a direct current high voltage low current power source to the superconducting cable (a).
다음으로, 상기 제어반(310)에 제어신호를 송신하여 상기 구동모터(340)에 0초과 750V 이하의 전압을 인가하여 회전축(341)을 회전시키면 상기 회전축(341)에 결합된 절연부(600)의 동력전달축(620)에 의해 고전압부(400)의 발전기(450)를 작동시키게 된다.Next, the control unit 310 transmits a control signal to the drive motor 340 by applying a voltage of less than 0 750V or less to rotate the rotating shaft 341, the insulating portion 600 coupled to the rotating shaft 341 The generator 450 of the high voltage unit 400 is operated by the power transmission shaft 620.
상기 발전기(450)에서 생산되는 교류의 저전압고전류 전원은 상기 직류 고전압 공급부(2)에서 인가되는 750V를 초과하는 고전압저전류 전원을 기준전압으로 하는 0 초과 750V 이하의 전압을 갖는 것으로써, 상기 고전압부(400)의 컨트롤러(430)와 교류직류 변환기(410)에 각각 공급되며, 상기 발전기(450)로부터 전원을 공급받은 컨트롤러(430)는 상기 교류직류 변환기(410)를 제어하여 상기 발전기(450)에서 교류직류 변환기(410)로 공급되는 교류의 저전압고전류 전원을 직류의 저전압고전류 전원으로 변환시킨다.The low voltage high current power source of the alternating current produced by the generator 450 has a voltage greater than 0 and less than or equal to 750 V using the high voltage low current power supply exceeding 750 V applied by the DC high voltage supply unit 2 as a reference voltage. The controller 430 and the AC DC converter 410 of the unit 400 are respectively supplied, and the controller 430 supplied with power from the generator 450 controls the AC DC converter 410 to generate the generator 450. ) Converts the low voltage high current power of the AC supplied to the AC DC converter 410 into the low voltage high current power of the DC.
상기 교류직류 변환기(410)에 의해 변환된 직류의 저전압고전류 전원은 상기 직류 고전압 공급부(2)의 제1단자(10)와 전기적으로 연결되는 제2단자(20)를 통해 초전도케이블(a)로 인가되며, 상기 초전도케이블(a)로 인가된 직류의 저전압고전류 전원은 다시 제3단자(30)를 통해 교류직류 변환기(410)로 인가된다. 즉, 상기 초전도케이블(a)을 통하여 직류의 저전압고전류 전원이 흐르면서 상기 초전도케이블(a)의 발열에 따른 직류부하 시험을 수행할 수 있는 것이다.The DC low voltage high current power converted by the AC DC converter 410 is connected to the superconducting cable a through the second terminal 20 electrically connected to the first terminal 10 of the DC high voltage supply unit 2. The low-voltage high-current power supply of DC applied to the superconducting cable (a) is again applied to the AC DC converter 410 through the third terminal 30. That is, the DC load test according to the heat generation of the superconducting cable (a) while the DC low voltage high current power flows through the superconducting cable (a).
여기에서, 상기 교류직류 변환기(410)에 요구되는 전압 성능치는 상기 직류 고전압 공급부(2)에서 제1단자(10)로 인가되는 직류의 고전압저전류 전원을 기준전압으로 하는 직류의 저전압고전류 전원이 상기 제2단자(20)를 통해 초전도케이블(a)에 인가되어 다시 제3단자(30)를 통해 교류직류 변환기(410)로 인가되는 직류의 저전압고전류 전원이 상기 초전도케이블(a)에 통전되면서 손실된 전압을 포함할 수 있는 정도이면 된다.Here, the voltage performance value required for the AC DC converter 410 is a direct current low voltage high current power source using a direct current high voltage low current power source applied from the direct current high voltage supply unit 2 to the first terminal 10 as a reference voltage. The DC low voltage high current power applied to the superconducting cable (a) through the second terminal 20 and applied to the AC DC converter 410 through the third terminal 30 is energized to the superconducting cable (a). All that is necessary is to include the lost voltage.
따라서, 본 발명의 고전압부(400)를 구성하는 부품들이 750V를 초과하는 고전압의 시험전압을 견딜 수 있을 정도의 절연설계가 요구되지 않고 0 초과 750V 이하의 저전압의 시험전압에 대한 절연설계가 되어 있으면 충분하므로 초전도케이블(a) 시험장치의 설계비용이 절감되는 이점이 있다.Therefore, the insulation design of the components constituting the high voltage unit 400 of the present invention to withstand the test voltage of the high voltage exceeding 750V is not required, and the insulation design for the test voltage of the low voltage exceeding 0 and less than 750V becomes Since it is sufficient, the design cost of the superconducting cable (a) test apparatus is reduced.
그리고 상기 교류직류 변환기(410)에 설치되는 진단부로 인하여 교류직류 변환기(410) 내부의 온도 및 압력 등을 감시하여 고온 또는 고압이 발생할 경우 자동으로 직류의 저전압고전류 전원의 공급을 중단시켜 안전사고 및 시험장치의 파손을 방지한다.In addition, the diagnostic unit installed in the AC DC converter 410 monitors the temperature and pressure inside the AC DC converter 410 to automatically cut off the supply of DC low voltage high current power when a high temperature or high pressure occurs. Prevent damage to the test equipment.
또, 상기 고전압부(400)의 컨트롤러(430)는 상기 교류직류 변환기(410)를 제어하면서 수집되는 데이터를 상기 저전압부(300)의 제어반(310)로 송신하여 작업자가 상기 제어반(310)에 직접 표시되거나, 또는 상기 제어반(310)가 컨트롤러(430)로부터 송신된 데이터를 외부의 디스플레이 장치에 전송하여 작업자로 하여금 본 발명에 따른 시험장치의 전기적 및 물리적인 상태를 확인할 수 있도록 한다.In addition, the controller 430 of the high voltage unit 400 transmits the data collected while controlling the AC DC converter 410 to the control panel 310 of the low voltage unit 300 so that the operator can control the control panel 310. Directly displayed or the control panel 310 transmits the data transmitted from the controller 430 to an external display device to enable the operator to check the electrical and physical state of the test apparatus according to the present invention.
실시예2Example 2
도 6은 본 발명에 따른 직류고전압 초전도케이블 부하시험 장치의 제2실시예를 개략적으로 도시한 도면이고, 도 7은 도 6에 도시된 직류 고전압 공급부를 도시한 도면이며, 도 8은 도 6에 따른 직류 고전류 공급부를 도시한 도면이고, 도 9는 도 8에 따른 절연분리변압기를 도시한 도면이며, 도 10은 도 9에 따른 절연분리변압기의 내부를 도시한 도면이고, 도 11은 도 6에 도시된 직류고전압 초전도케이블 부하시험 장치의 사용예를 도시한 도면이다.6 is a view schematically showing a second embodiment of the DC high voltage superconducting cable load test apparatus according to the present invention, FIG. 7 is a view showing the DC high voltage supply unit shown in FIG. 6, and FIG. 8 is shown in FIG. 6. FIG. 9 is a diagram illustrating a DC high current supply unit, FIG. 9 is a diagram illustrating an isolation transformer according to FIG. 8, FIG. 10 is a diagram illustrating an inside of the isolation transformer according to FIG. 9, and FIG. 11 is shown in FIG. 6. A diagram showing an example of use of the DC high voltage superconducting cable load tester shown.
도 6을 참조하여 본 발명에 따른 직류고전압 전력장치(1)의 직류부하 시험장치를 설명하면, 고전압의 직류전류를 인가하여 직류고전압 전력장치(1)의 직류부하를 시험하는 장치에 있어서, 상기 직류고전압 전력장치(1)에 통전 가능하도록 직접 접촉되어 직류의 고전압을 공급하는 직류 고전압 공급부(2) 및 상기 직류고전압 전력장치(1)에 통전 가능하도록 직접 접촉되어 고전류의 직류전류를 공급하는 직류 고전류 공급부(3)를 포함한다.Referring to FIG. 6, a DC load test apparatus of the DC high voltage power device 1 according to the present invention will be described. In the apparatus for testing the DC load of the DC high voltage power device 1 by applying a high voltage DC current, DC high voltage supply unit 2 which is directly in contact with the DC high voltage power device 1 to supply electricity and supplies DC high voltage and DC which is in direct contact so as to supply electricity to the DC high voltage power device 1 to supply DC current of high current. And a high current supply unit 3.
상기 직류고전압 전력장치(1)는 직류의 고전압이 인가되는 전력장치를 일컫는 것으로써, 본 발명에서는 해저에 설치되어 전력을 공급하는 해저케이블, 또는 초전도케이블을 그 예로 하였다.The DC high voltage power device 1 refers to a power device to which a high voltage of DC is applied. In the present invention, a submarine cable or a superconducting cable installed on the sea floor to supply power is used as an example.
상기 직류 고전압 공급부(2)에서 상기 직류고전압 전력장치(1)로 직류의 고전압을 인가하는 전원공급선(a1)은 단일 선으로 구비되고, 상기 직류 고전류 공급부(3)에서 상기 직류고전압 전력장치(1)로 직류의 고전류를 인가하는 또 다른 전원공급선(a2, a3)은 직류의 고전류가 인가 혹은 인풋(input) 및 출력 혹은 아웃풋(output) 되는 복수의 선으로 구비된다.The power supply line a1 for applying a high voltage of DC from the DC high voltage supply unit 2 to the DC high voltage power device 1 is provided as a single line, and the DC high voltage power supply 1 Another power supply line (a2, a3) for applying a high current of direct current () is provided with a plurality of lines to which a high current of direct current is applied or input and output or output.
한편, 상기 직류고전압 전력장치(1)는 지면에 접지된 상태로써, 상기 직류 고전압 공급부(2)에서 상기 단일 선인 전원공급선(a1)을 통해 상기 직류고전압 전력장치(1)로 직류의 고전압이 인가될 수 있도록 한다.On the other hand, the DC high voltage power device 1 is grounded to the ground, the DC high voltage is applied from the DC high voltage supply unit 2 to the DC high voltage power device 1 through the power supply line a1 which is the single line. To be possible.
도 7을 참조하면, 상기 직류 고전압 공급부(2)는 고전압 저전류를 발생하는 직류 고전압원부(100) 및 이를 인가받아 상기 직류고전압 전력장치(1)에 공급하는 고전압저항(200)을 포함하여 구성된다.Referring to FIG. 7, the DC high voltage supply unit 2 includes a DC high voltage source unit 100 that generates a high voltage low current and a high voltage resistor 200 that is supplied to the DC high voltage power device 1. do.
상기 직류 고전압원부(100)는 3상의 교류전류를 인가받아 정류기(미도시)를 거쳐 고전압 저전류를 생산한다.The DC high voltage source unit 100 receives a three-phase AC current to produce a high voltage low current through a rectifier (not shown).
상기 고전압저항(200)은 상기 직류 고전압원부(100)에서 생산된 고전압 저전류를 상기 직류고전압 전력장치(1)에 공급한다.The high voltage resistor 200 supplies the high voltage low current produced by the DC high voltage source unit 100 to the DC high voltage power device 1.
이 때, 상기 고전압저항(200)은 상기 직류 고전압 공급부(2)에서 발생된 고전압 저전류가 상기 직류 고전압원부(100)로 역류하는 것을 방지한다.At this time, the high voltage resistor 200 prevents the high voltage low current generated by the DC high voltage supply unit 2 from flowing back to the DC high voltage source unit 100.
또한, 상기 직류 고전압원부(100)에서 발생되는 전압과 전류의 급격한 변화에 따른 충격을 흡수하여 상기 직류 고전압 공급부(2)를 보호한다.In addition, the DC high voltage supply unit 2 protects the DC high voltage supply unit 2 by absorbing a shock caused by a sudden change in voltage and current generated in the DC high voltage source unit 100.
상기 직류 고전류 공급부(3)는 하부에 위치하는 저전압부(300)와, 상부에 위치하는 고전압부(400) 및 상기 저전압부(300)와 고전압부(400)가 서로 절연되도록 연결하는 절연분리변압기(500)를 포함하여 구성된다.The DC high current supply unit 3 is an isolation voltage transformer for connecting the low voltage unit 300 located below and the high voltage unit 400 located above and the low voltage unit 300 and the high voltage unit 400 to be insulated from each other. And 500.
도 8을 참조하여 상기 직류 고전류 공급부(3)를 더욱 상세히 설명하면, 상기 저전압부(300)는 직류 고전류 공급부(3)의 하부에 위치하여 지면과 접지된다.Referring to FIG. 8, the DC high current supply unit 3 will be described in more detail. The low voltage unit 300 is located below the DC high current supply unit 3 and is grounded with the ground.
그리고 상기 절연분리변압기(500)는 상기 저전압부(300)와 고전압부(400)가 서로 절연되도록 하되, 상기 저전압부(300)로 교류전원을 인가받아 고전압 교류전원을 생산하여 상기 고전압부(400)로 공급한다.The insulation separation transformer 500 may insulate the low voltage unit 300 and the high voltage unit 400 from each other, and receives the AC power to the low voltage unit 300 to produce a high voltage AC power to generate the high voltage unit 400. ).
상기 저전압부(300)는 상기 직류 고전류 공급부(3)를 제어하는 제어반(310)과, 상기 제어반(310)에 연결되어 제어신호를 송수신하는 제1통신부(320) 및 상기 제1통신부(320)에 연결되어 제어신호를 수신하여 교류전원을 발생하며 상기 절연분리변압기(500)로 교류전원을 인가하는 교류전원부(330)로 구성된다.The low voltage unit 300 includes a control panel 310 for controlling the DC high current supply unit 3, a first communication unit 320 and a first communication unit 320 connected to the control panel 310 to transmit and receive a control signal. Is connected to generate a control signal to generate an AC power and is composed of an AC power supply unit 330 for applying AC power to the isolation transformer 500.
상기 제어반(310)은 상기 직류 고전류 공급부(3)의 외함 외부에 설치되어 작업자가 직접 또는 원거리에서 무선통신하여 간접으로 조작할 수 있다.The control panel 310 is installed outside the enclosure of the DC high current supply unit 3 can be operated by the operator directly or indirectly by wireless communication from a long distance.
또한, 상기 제어반(310)은 상기 직류 고전압 공급부(2)에 연결되어 상기 제어반(310)을 조작함으로써 상기 직류 고전압 공급부(2)를 제어할 수도 있다.In addition, the control panel 310 may be connected to the DC high voltage supply unit 2 to control the DC high voltage supply unit 2 by operating the control panel 310.
상기 교류전원부(330)는 상기 제1통신부(320)로부터 상기 제어반(310)의 제어신호를 수신하면 상기 절연분리변압기(500)로 교류전원을 인가하는 것으로, 보다 상세하게는 후술할 절연분리변압기(500) 내부에 설치되는 1차코일(540)에 교류전원을 인가하게 된다.When the AC power supply unit 330 receives a control signal from the control panel 310 from the first communication unit 320, the AC power supply unit 330 applies AC power to the insulation separation transformer 500. AC power is applied to the primary coil 540 installed inside the 500.
상기 고전압부(400)는 상기 절연분리변압기(500)로부터 교류전원을 인가받아 저전압 고전류를 생성하는 교류직류 변환기(410)와, 상기 교류직류 변환기(410)와 통전 가능하게 연결되어 상기 직류고전압 전력장치(1)에 상기 교류직류 변환기(410)에서 생성된 저전압 고전류를 인가하며, 이 때 인가하는 저전압 고전류를 모니터링 및 제어하는 전압탭부(420)와, 상기 교류직류 변환기(410) 및 전압탭부(420)와 연결되어 출력을 제어하고 측정하며, 상기 전압탭부(420)의 모니터링 데이터를 수신하는 컨트롤부(430) 및 상기 저전압부(300)로부터 제어신호를 수신하여 상기 컨트롤부(430)를 제어하며, 상기 컨트롤부(430)에 수집된 데이터를 저전압부(300)로 송신하는 제2통신부(440)를 포함한다.The high voltage unit 400 is connected to the AC direct current converter 410 and the AC direct current converter 410 to generate a low voltage high current by receiving an AC power supply from the isolation transformer 500. A voltage tap unit 420 for applying a low voltage high current generated by the AC DC converter 410 to the device 1, and monitoring and controlling the low voltage high current applied thereto, and the AC DC converter 410 and the voltage tap unit ( It is connected to the 420 to control and measure the output, and receives the control signal from the control unit 430 and the low voltage unit 300 for receiving the monitoring data of the voltage tap unit 420 to control the control unit 430 And a second communication unit 440 for transmitting the data collected by the control unit 430 to the low voltage unit 300.
상기 교류직류 변환기(410)는 상기 절연분리변압기(500)로부터 인가되는 고전압의 교류전원을 저전압 고전류의 직류전원를 생성한다. 이는 상기 전압탭부(420)를 통하여 상기 직류고전압 전력장치(1)에 인가되며, 상기 전압탭부(420)는 상기 교류직류 변환기(410)로부터 인가되는 저전압 고전류의 직류전원과 상기 직류고전압 전력장치(1)로 인가하는 저전압 고전류의 직류전원의 상태와 양을 모니터링하여 그 결과 값에 대한 데이터를 상기 컨트롤부(430)로 전송하고, 필요에 따라 상기 컨트롤부(430)에 의해 전압탭부(420)를 제어하여 상기 직류고전압 전력장치(1)로 인가하는 저전압 고전류의 직류전원을 제어할 수 있게된다.The AC DC converter 410 generates a DC voltage having a low voltage and high current from an AC power having a high voltage applied from the isolation transformer 500. It is applied to the DC high voltage power device 1 through the voltage tap unit 420, the voltage tap unit 420 is a low voltage high current DC power applied from the AC DC converter 410 and the DC high voltage power device ( 1) monitors the state and amount of the low-voltage high-current DC power applied to the control unit 430 transmits data on the result value to the control unit 430, if necessary, the voltage tap unit 420 by the control unit 430 It is possible to control the DC power of the low voltage high current applied to the DC high voltage power device (1) by controlling the.
상기와 같은 일련의 제어는 상기 컨트롤부(430)에 연결되어 컨트롤부(430)를 제어하는 상기 제2통신부(440)를 통하여 이루어지며, 상기 제2통신부(440)는 상기 저전압부(300)에 설치되는 상기 제1통신부(320)로부터 제어반(310)의 제어신호를 전송받게 된다.The series of control is performed through the second communication unit 440 connected to the control unit 430 to control the control unit 430, and the second communication unit 440 is the low voltage unit 300. The control signal of the control panel 310 is received from the first communication unit 320 installed in the.
즉, 상기 제2통신부(440)는 상기 제1통신부(320)로부터 제어신호를 수신하고, 상기 제2통신부(440)는 상기 컨트롤부(430)에 수집되는 데이터를 전송받아 상기 제1통신부(320)로 다시 송신하게 되는 것이다.That is, the second communication unit 440 receives a control signal from the first communication unit 320, and the second communication unit 440 receives data collected by the control unit 430 and receives the first communication unit ( To 320).
상기 제1통신부(320)와 제2통신부(440) 간의 송수신은 무선으로 이루어지거나, 또는 상기 제1통신부(320)와 제2통신부(440)에서 각각 인출되는 광케이블(b)과, 상기 광케이블(b)을 서로 이어주는 광접속부(c)를 통하여 이루어질 수 있다.The transmission and reception between the first communication unit 320 and the second communication unit 440 is performed wirelessly, or the optical cable (b) drawn out from the first communication unit 320 and the second communication unit 440, respectively, and the optical cable ( It can be made through the optical connection (c) connecting the b) to each other.
상기 교류직류 변환기(410)의 허용 전압성능치는 상기 직류 고전류 공급부(3)의 고전압부(400)에서 직류고전압 전력장치(1)로 연결되는 복수의 전원공급선(a1, a2) 사이의 전압 차이를 포함하는 범위의 전압성능치를 갖는 것을 이용한다.The allowable voltage performance value of the AC DC converter 410 is a voltage difference between the plurality of power supply lines a1 and a2 connected from the high voltage unit 400 of the DC high current supply unit 3 to the DC high voltage power device 1. The thing which has voltage performance value of the range to include is used.
그리고, 상기 2차코일(550)에 고전압의 교류전원이 유도되도록 1차코일(540)에 교류전원을 인가하는 저전압부(300)는 접지된 지면을 기준전압으로 하여 0V를 초과하고 750V 이하인 전압이 발생되고, 상기 2차코일(550)에 유도된 고전압의 교류전원을 인가받아 저전압의 직류 고전류를 생성하는 상기 고전압부(400)는 상기 직류 고전압 공급부(2)의 750V를 초과하는 전압을 기준전압으로 하는 0V 초과 750V이하인 전압이 발생된다.In addition, the low voltage unit 300 that applies AC power to the primary coil 540 to induce a high voltage AC power to the secondary coil 550 has a voltage greater than 0V and less than 750V using a grounded ground as a reference voltage. Is generated, and the high voltage unit 400 generating a low voltage direct current by applying a high voltage AC power induced in the secondary coil 550 refers to a voltage exceeding 750 V of the direct current high voltage supply unit 2. A voltage that is greater than 0 V and less than or equal to 750 V is generated.
상기 저전압부(300) 및 고전압부(400)의 전압 분류는, 교류의 경우 저전압은 0V 초과 600V 이고, 고전압은 600V 초과 7,000V 이하인 전압이다. 그리고 직류의 경우 저전압은 0V 초과 750V 이고, 고전압은 750V 초과 7,000V 이하인 전압이다.In the voltage classification of the low voltage unit 300 and the high voltage unit 400, in the case of an alternating current, the low voltage is more than 0V and 600V, and the high voltage is more than 600V and 7,000V or less. In the case of direct current, the low voltage is more than 0V and 750V, and the high voltage is more than 750V and 7,000V or less.
한편, 교류 및 직류 모두 7000V 초과 66,000V 이하는 특고압이라 하고, 66,000V 초과 220,000V 이하는 초고압이라 한다.On the other hand, AC and DC both exceed 7000V and below 66,000V are called high voltages, and above 66,000V and below 220,000V are referred to as high voltages.
본 발명에서는 상기 고전압부(400)의 기준전압이 750V를 초과하는 것으로써 상술한 고전압과 특고압 및 초고압의 전압을 포함할 수 있다.In the present invention, the reference voltage of the high voltage unit 400 is greater than 750V and may include the above-described high voltage, extra high voltage, and ultra high voltage.
도 9 및 도 10을 참조하면, 상기 절연분리변압기(500)는 절연실린더(510)와, 상기 절연실린더(510)의 내부에 설치되는 고정프레임(520)과, 상기 고정프레임(520)에서 상하로 설치되는 복수개의 철심(530)과, 상기 복수개의 철심(530) 중 하부의 철심(530)에 권선되는 1차코일(540)과, 상부의 철심(530)에 권선되는 2차코일(550)과, 상기 1차코일(540)과 2차코일(550) 사이에 설치되는 절연지지대(560)와, 상기 절연지지대(560)에 권선되는 절연지(570)와, 상기 절연실린더(510) 내부에 충진되는 절연부재(580) 및 상기 절연실린더(510)의 하단에 결합되는 베이스(590)를 포함한다.9 and 10, the insulation separation transformer 500 includes an insulation cylinder 510, a fixing frame 520 installed inside the insulation cylinder 510, and a top and bottom in the fixing frame 520. A plurality of iron cores 530 and the primary coil 540 wound on the lower iron core 530 of the plurality of iron cores 530, and the secondary coil 550 wound on the upper iron core 530 ), An insulation support 560 installed between the primary coil 540 and the secondary coil 550, an insulation paper 570 wound around the insulation support 560, and an interior of the insulation cylinder 510. And a base 590 coupled to a lower end of the insulating member 580 and the insulating cylinder 510.
상기 절연실린더(510)는 내부에 공간부(513)가 형성되는 것으로, 본 발명에서는 하단은 상기 베이스(590)의 상부에 결합되고, 상단은 탈착 가능한 마감부재가 결합된 형상으로, 각각의 결합부에는 플랜지가 형성되고, 그 사이에 개스킷 등을 구비하여 밀폐력을 향상하였다.The insulating cylinder 510 is a space portion 513 is formed therein, in the present invention, the lower end is coupled to the upper portion of the base 590, the upper end is a shape coupled to the removable finishing member, each coupling Flange was formed in the part, and the gasket etc. were provided in between, and the sealing force was improved.
상기 고정프레임(520)은 상기 절연실린더(510)의 내부, 즉 공간부(513)에 설치되는 것으로 서로 마주보도록 이격되어 설치된다.The fixing frame 520 is installed inside the insulating cylinder 510, that is, space part 513, and spaced apart from each other to face each other.
본 발명에서 상기 고정프레임(520)은 'ㅠ'자 형상의 형강을 이용하여 상기 1차코일(540)과 2차코일(550) 및 절연지지대(560)를 견고히 지지할 수 있도록 한다.In the present invention, the fixing frame 520 is used to firmly support the primary coil 540 and secondary coil 550 and the insulating support 560 by using a '?' Shaped steel.
상기 서로 이격되어 설치되는 고정프레임(520)에는 상기 고정프레임(520)의 상부와 하부에서 서로 이격된 고정프레임(520)을 서로 잇도록 설치되는 복수의 철심(530)이 구비되고, 상기 복수의 철심(530)의 사이에는, 서로 이격된 고정프레임(520)을 잇도록 설치되는 절연지지대(560)가 설치된다.The fixed frames 520 that are spaced apart from each other are provided with a plurality of iron cores 530 installed to connect the fixed frames 520 spaced apart from each other at the upper and lower portions of the fixed frame 520, and the plurality of Between the iron cores 530, an insulating support 560 is installed to connect the fixed frame 520 spaced apart from each other.
상기 철심(530) 중 하부에 위치하는 철심(530)에는 상기 1차코일(540)이 권선되고, 상부에 위치하는 철심(530)에는 상기 2차코일(550)이 권선되며, 상기 1차코일(540)과 2차코일(550) 사이에 위치하는 절연지지대(560)에는 상기 1차코일(540)과 2차코일(550)이 절연되도록 하는 절연지(570)가 권선된다.The primary coil 540 is wound around the iron core 530 located below the iron core 530, and the secondary coil 550 is wound around the iron core 530 located above the primary coil 530. An insulating paper 570 is wound around the insulating support 560 positioned between the 540 and the secondary coil 550 to insulate the primary coil 540 and the secondary coil 550.
상기 절연지지대(560)에 권선되는 절연지(570)는 상기 절연지지대(560)의 외면에서 수평 및 수직의 혼합형태로 권선되게 함으로써 상기 1차코일(540)과 2차코일(550)의 절연거리가 충분히 확보되도록 하는 것이 바람직하다.The insulating paper 570 wound on the insulating support 560 is wound on the outer surface of the insulating support 560 in a mixed form of horizontal and vertical to insulate the insulation distance between the primary coil 540 and the secondary coil 550. It is desirable to ensure that is sufficient.
상기 절연실린더(510)의 공간부(513)에는 절연을 위한 절연부재(580)가 충진되며, 이를 위하여 본 발명에서는 절연유(insulating oil)와 같은 유체를 이용하는 것이 바람직하다.The space 513 of the insulating cylinder 510 is filled with an insulating member 580 for insulating. For this purpose, in the present invention, it is preferable to use a fluid such as insulating oil.
상기와 같이 유체의 절연부재(580)를 이용할 경우 상기 절연실린더(510)의 공간부(513)에 절연부재(580)가 완충되도록 주입하지 않고, 상기 1차코일(540)과 2차코일(550) 및 절연지(570)가 권선된 절연지지대(560)가 상기 절연부재(580)에 완전히 잠기도록 하되, 상기 절연실린더(510)의 내부에서 상부에 여유공간이 형성되도록 충진함으로써 유체상태의 상기 절연부재(580)의 열팽창으로 인한 절연실린더(510)의 파손을 방지한다.In the case of using the insulating member 580 of the fluid as described above, the primary coil 540 and the secondary coil (540) are not injected so that the insulating member 580 is buffered in the space 513 of the insulating cylinder 510. 550 and the insulating support 560 on which the insulating paper 570 is wound are completely immersed in the insulating member 580, and the filling of the fluid state is performed by filling a space in the upper portion of the insulating cylinder 510. The breakdown of the insulating cylinder 510 due to thermal expansion of the insulating member 580 is prevented.
상기 절연실린더(510)는 그 외주면에서 돌출형성되는 복수의 스커트(511)가 형성되어 충분한 절연거리를 유지하도록 하며, 상기 스커트(511)는 폴리머 재질인 것이 바람직하다.The insulating cylinder 510 is formed with a plurality of skirts 511 protruding from the outer peripheral surface to maintain a sufficient insulation distance, the skirt 511 is preferably made of a polymer material.
또한, 상기 절연실린더(510)는 그 외주면을 감싸도록 복수의 밴드(512)를 설치함으로써 상기 절연실린더(510)에 가해지는 하중에 대응할 수 있도록 보강하여 절연실린더(510)의 뒤틀림을 방지할 수 있다.In addition, the insulating cylinder 510 may be provided with a plurality of bands 512 to surround the outer circumferential surface thereof so as to be reinforced to cope with the load applied to the insulating cylinder 510 to prevent distortion of the insulating cylinder 510. have.
상기 베이스(590)는 상기 절연실린더(510)의 하단에 결합되는 것으로, 그 내부에는 상기 절연실린더(510)의 공간부(513)와 연통되는 유로(591)가 형성되고, 상기 베이스(590)의 외면에는 상기 유로(591)를 개폐할 수 있는 덮개부(592)가 구비된다.The base 590 is coupled to the lower end of the insulating cylinder 510, and a flow path 591 is formed therein, which communicates with the space 513 of the insulating cylinder 510, and the base 590. The outer surface of the cover portion 592 that can open and close the flow path (591) is provided.
즉, 상기 유로(591)는 일단이 상기 베이스(590)의 상면을 관통하고, 타단은 상기 베이스(590)의 측면을 관통하여 서로 이어지고, 상기 유로(591)의 타단은 덮개부(592)에 의해 개폐가 가능함으로써, 상기 덮개부(592)를 개방하여 절연실린더(510)내의 유체상태인 절연부재(580)를 채취할 수 있도록 함으로써 상기 절연부재(580)의 상태를 감시할 수 있도록 한다.That is, one end of the flow passage 591 penetrates an upper surface of the base 590, the other end penetrates through a side surface of the base 590, and the other end of the flow passage 591 is connected to the cover part 592. By opening and closing by means of opening and closing, the cover part 592 is opened so that the insulating member 580 in a fluid state in the insulating cylinder 510 can be taken out so that the state of the insulating member 580 can be monitored.
한편, 상기 직류 고전압 공급부(2)와 직류 고전류 공급부(3) 사이에는 이들의 피드백 신호를 송수신하는 안전회로부(4)를 더 구비함으로써 작업자가 상기 직류 고전압 공급부(2)와 직류 고전류 공급부(3)를 직접 감시할 수 없거나, 비상상황 발생 시 상기 안전회로부(4)에 의해 직류 고전압 공급부(2)와 고전류 공급부를 제어하여 안전사고를 방지한다.On the other hand, between the DC high voltage supply unit 2 and the DC high current supply unit 3 is further provided with a safety circuit unit 4 for transmitting and receiving their feedback signals, the operator is the DC high voltage supply unit 2 and the DC high current supply unit 3 It is not possible to directly monitor, or in the event of an emergency by controlling the DC high voltage supply unit 2 and the high current supply by the safety circuit unit 4 to prevent safety accidents.
이를 위하여 상기 안전회로부(4)는 제1통신부(320) 및 제2통신부(440)와 연결되어 데이터 수집 및 제어를 수행할 수 있도록 하는 것이 바람직하다.To this end, the safety circuit unit 4 is preferably connected to the first communication unit 320 and the second communication unit 440 to perform data collection and control.
상기와 같은 직류고전압 전력기기(1)의 직류부하 시험장치를 이용하여 직류부하 시험을 수행하는 시험예에 대하여 도 11을 참조하여 설명하면 다음과 같다.A test example of performing a DC load test using the DC load test apparatus of the DC high voltage power device 1 will be described with reference to FIG. 11 as follows.
상기 직류고전압 전력장치(1)에 해당하는 해저케이블 또는 초전도케이블에 상기 직류 고전압 공급부(2)의 고전압저항(200)에서 인출되는 전원공급선(a1)과, 상기 직류 고전류 공급부(3)의 전압탭부(420)에서 인출되는 복수의 전원공급선(a2, a3)을 각각 연결한다.A power supply line a1 drawn out from the high voltage resistor 200 of the DC high voltage supply unit 2 to the submarine cable or superconducting cable corresponding to the DC high voltage power device 1, and a voltage tap unit of the DC high current supply unit 3; A plurality of power supply lines a2 and a3 drawn out at 420 are respectively connected.
여기에서, 상기 고전압저항(200)에서 인출되는 전원공급선(a1)은 고전압의 직류 전원을 인가하는 것으로 1개의 전원공급선(a1)으로 이루어지고, 상기 전압탭부(420)에서 인출되는 전원공급선(a2, a3)은 고전류의 직류 전원을 인가하는 것으로 2개의 전원공급선(a2, a3)으로 이루어져 상기 해저케이블 또는 초전도케이블의 양단에 연결되도록 한다.Here, the power supply line a1 drawn out from the high voltage resistor 200 is a power supply line a1 that applies a high voltage DC power, and is composed of one power supply line a1 and drawn from the voltage tap unit 420. , a3) is to apply a high current DC power supply is composed of two power supply lines (a2, a3) to be connected to both ends of the submarine cable or superconducting cable.
이 때, 상기 해저케이블 또는 초전도케이블은 지면으로 접지된 상태이다.At this time, the submarine cable or superconducting cable is grounded to the ground.
상기 제어반(310)을 조작하여 직류 고전압원부(100)에 3상의 교류 전원을 인가하면 상기 직류 고전압원부(100)에 구비되는 정류기를 이용하여 고전압 저전류가 발생되고, 여기에서 발생된 고전압 저전류는 상기 고전압저항(200)을 거쳐 해저케이블 또는 초전도케이블로 인가되어 지면의 접지로 흐르게 된다.When the three-phase AC power is applied to the DC high voltage source unit 100 by operating the control panel 310, a high voltage low current is generated using a rectifier provided in the DC high voltage source unit 100, and the high voltage low current generated therein Is applied to the submarine cable or superconducting cable through the high voltage resistance 200 flows to the ground of the ground.
상기와 같이, 상기 해저케이블 또는 초전도케이블에 고전압을 인가할 수 있으며, 이로써 상기 해저케이블 또는 초전도케이블의 절연상태를 시험할 수 있는 것이다.As described above, a high voltage may be applied to the submarine cable or the superconducting cable, thereby testing the insulation state of the submarine cable or the superconducting cable.
그리고 상기 직류 고전압 공급부(2)에는 고전압저항(200)이 구비되어 상기 전원공급선(a1)을 기준으로 상기 해저케이블 또는 초전도케이블보다 상기 직류 고전압 공급부(2) 자체의 저항이 더 크게 됨으로써 고전압 저전류가 직류 고전압 공급부(2)로 역류하는 것을 방지하게 된다. 또한 시험부하에서 발생되는 고장(절연파괴)으로 인해 발생되는 전류변화를 감쇄하는 역할도 수행한다.In addition, the DC high voltage supply unit 2 is provided with a high voltage resistor 200 so that the resistance of the DC high voltage supply unit 2 itself is greater than that of the submarine cable or superconducting cable based on the power supply line a1, thereby providing high voltage and low current. Is prevented from flowing back into the DC high voltage supply unit 2. It also serves to attenuate the current changes caused by failures (breakdowns) caused by the test load.
이처럼 상기 해저케이블 또는 초전도케이블에 직류의 고전압 저전류가 인가되는 상태에서, 상기 제어반(310)을 조작하여 상기 제1통신부(320)를 통해 지면에 접지된 교류전원부(330)에 제어신호를 송신하면, 상기 교류전원부(330)에서 지면을 기준전압으로 하는 3상의 교류전원(380v(볼트))이 발생되고, 이 3상의 교류전원은 상기 절연분리변압기(500) 내의 1차코일(540)로 인가된다.In such a state that a high voltage low current of DC is applied to the submarine cable or the superconducting cable, the control panel 310 is operated to transmit a control signal to the AC power supply unit 330 grounded to the ground through the first communication unit 320. When the AC power supply unit 330 has a three-phase AC power source (380v (volt)) generated using the ground as a reference voltage, the three-phase AC power source is supplied to the primary coil 540 in the isolation transformer 500. Is approved.
이에 따라, 상기 1차코일(540)의 상부에 위치하여 상기 절연지(570)가 권선된 절연지지대(560)에 의해 절연되는 2차코일(550)에서는 상기 직류 고전압 공급부(2)에서 발생되는 고전압 저전류의 전압을 기준전압으로 갖는 고전압 3상 교류전원(380V(볼트))이 발생된다.Accordingly, in the secondary coil 550 positioned above the primary coil 540 and insulated by the insulating support 560 in which the insulating paper 570 is wound, the high voltage generated by the DC high voltage supply unit 2 is generated. A high voltage three-phase AC power source (380 V (volts)) having a low current voltage as a reference voltage is generated.
예를 들면, 상기 직류 고전압 공급부(2)에서 100kV의 직류 고전압이 인가된다면, 상기 절연분리변압기(500)에서 발생되는 고전압 3상 교류전원은 100kV의 직류 고전압의 기준전압을 갖는 3상의 380V 저전압 교류전원이 되는 것이다.For example, if a 100kV DC high voltage is applied from the DC high voltage supply unit 2, the high voltage three-phase AC power generated by the insulation separation transformer 500 is a three-phase 380V low voltage AC having a reference voltage of 100kV DC high voltage. To be a power source.
상기 2차코일(550)에서 발생된 고전압 3상 교류전원은 상기 교류직류 변환기(410)로 인가되어 직류의 저전압 대전류가 발생하게 되는데, 이는 다시 전압탭부(420)를 통하여 상기 해저케이블 또는 초전도케이블과 같은 직류고전압 전력장치(1)로 인가된다.The high voltage three-phase AC power generated by the secondary coil 550 is applied to the AC DC converter 410 to generate a low voltage large current of DC, which is again through the voltage tap unit 420, the submarine cable or superconducting cable. It is applied to the DC high voltage power device 1, such as.
이 때, 상기 컨트롤부(430)와 제2통신부(440)는 상기 절연분리변압기(500)를 통하여 바이어스된 고전압부(400) 내에서 동작되면서 상기 저전압부(300)의 제1통신부(320)와 제어신호 및 데이터를 송수신함으로써 상기 제어반(310)에 의해 안전하게 제어된다.At this time, the control unit 430 and the second communication unit 440 is operated in the high voltage unit 400 biased through the isolation transformer 500, while the first communication unit 320 of the low voltage unit 300 It is controlled by the control panel 310 by transmitting and receiving a control signal and data.
특히, 본 발명에서는 상기 교류직류 변환기(410)에 요구되는 전압 및 전류 성능치에 있어서, 상기 직류 고전압 공급부(2)에서 발생되는 만큼의 고전압이 아니라, 상기 컨트롤부(430)로부터 상기 직류고전압 전력장치(1)에 각각 연결되는 두 개의 전원공급선(a2, a3) 사이에서 상기 직류고전압 전력장치(1)의 자체 저항으로 인해 상기 복수의 전원공급선(a2, a3)사이에 전압 차이가 발생하는데, 상기 전압 차이가 상기 전압탭부(420)에서 감지(측정)되는 만큼의 전압 성능치가 요구됨으로써, 상기 직류 고전압 공급부(2)에서 발생하는 고전압과 비교하여 상기 컨트롤부(430)에 요구되는 전압 성능치가 상대적으로 매우 작게 되는 것이다.In particular, in the present invention, in the voltage and current performance value required for the AC DC converter 410, the DC high voltage power from the control unit 430, not the high voltage as generated by the DC high voltage supply unit 2, A voltage difference occurs between the plurality of power supply lines a2 and a3 due to the self-resistance of the DC high voltage power device 1 between two power supply lines a2 and a3 respectively connected to the device 1. As the voltage difference is required as much as the voltage difference is sensed (measured) by the voltage tap unit 420, the voltage performance value required by the control unit 430 as compared with the high voltage generated by the DC high voltage supply unit 2 is increased. Relatively small.
그러므로 저전압 고전류의 성능치가 요구되는 상기 교류직류 변환기(410)를 이용하여 직류의 고전압 및 고전류를 직접 접촉하여 시험할 수 있어 고전압 고전류의 성능치가 요구되는 교류직류 변환기에 대비하여 설비비용을 절감할 수 있는 것이다.Therefore, the AC direct current converter 410, which requires a low voltage high current performance value, can be tested by directly contacting a high voltage and a high current of DC, thereby reducing equipment costs in comparison with an AC DC converter requiring high voltage high current performance values. It is.
즉, 상기 저전압부(300)의 3상 교류전원은 절연분리변압기(500)를 거쳐 고전압의 3상 교류전원이 되어 상기 고전압부(400)로 인가되고, 다시 저전압 고전류의 용량을 갖는 상기 교류직류 변환기(410)를 통하여 직류의 저전압 고전류가 되어 상기 전압탭부(420)에 의해 전원공급선(a2)을 통하여 해저케이블 또는 초전도케이블의 일단에 인가되는 것이다.That is, the three-phase AC power of the low voltage unit 300 is a high voltage three-phase AC power through the isolation transformer 500 is applied to the high voltage unit 400, the AC direct current having a capacity of low voltage high current again. The low voltage high current of the direct current through the converter 410 is applied to the one end of the submarine cable or the superconducting cable by the voltage tap portion 420 through the power supply line a2.
그리고 상기 해저케이블 또는 초전도케이블의 일단에 인가된 저전압 고전류는 타단을 통하여 전원공급선(a3)을 통하여 전압탭부(420)로 회수되어진다.The low voltage high current applied to one end of the submarine cable or superconducting cable is recovered to the voltage tap part 420 through the power supply line a3 through the other end.
상기와 같이, 해저케이블 또는 초전도케이블에 직류의 고전류를 인가함으로써 직류부하 시험 시 상기 해저케이블 또는 초전도케이블의 발열 정도를 시험 할 수 있는 것이다.As described above, by applying a high current of direct current to the submarine cable or superconducting cable, the degree of heat generation of the submarine cable or superconducting cable can be tested during the DC load test.
본 발명에 따른 직류부하 시험장치에 대하여 간략하게 설명하면, 상기 직류 고전압 공급부(2)에서 발생되는 고전압 저전류는 전원공급선(a1)을 통해 지면에 접지되어 있는 해저케이블 또는 초전도케이블에 인가되고, 이와 동시에 상기 직류 고전류 공급부(3)에서 발생되는 저전압 고전류는 전원공급선(a2)을 통하여 해저케이블 또는 초전도 케이블에 인가되어 다시 전원공급선(a3)을 통하여 직류 고전류 공급부(3)로 회수되는 것이다.A brief description of the DC load test apparatus according to the present invention, the high voltage low current generated in the DC high voltage supply unit 2 is applied to the submarine cable or superconducting cable grounded to the ground through the power supply line (a1), At the same time, the low voltage high current generated by the DC high current supply unit 3 is applied to the submarine cable or superconducting cable through the power supply line a2, and is recovered to the DC high current supply unit 3 through the power supply line a3.
이 때, 상기 해저케이블 또는 초전도케이블이 지면에 접지되어 있으므로 상기 직류 고전압 공급부(2)에서 인가되는 고전압 저전류는 상기 직류 고전압 공급부(2) 또는 직류 고전류 공급부(3)로 인가되지 않으며, 상기 해저케이블 또는 초전도케이블의 절연상태 파괴시 상기 직류 고전압 공급부(2)는 고전압저항(200)이 고전압 저전류의 역류를 방지하고, 상기 직류 고전류 공급부(3)는 상기 절연분리변압기(500)가 절연되어 있어 고전압 저전류가 상기 직류 고전류 공급부(3)로 흐르는 것을 방지하게 되는 것이다.At this time, since the submarine cable or the superconducting cable is grounded to the ground, the high voltage low current applied from the DC high voltage supply unit 2 is not applied to the DC high voltage supply unit 2 or the DC high current supply unit 3, When the insulation state of the cable or the superconducting cable is destroyed, the DC high voltage supply unit 2 prevents the high voltage resistance 200 from flowing back of the high voltage and low current, and the DC high current supply unit 3 is insulated from the insulation separation transformer 500. This prevents the high voltage low current from flowing into the DC high current supply unit 3.
상술한 바와 같이, 본 발명에 따른 초전도케이블(a) 시험장치를 이용함으로써, 초전도케이블(a)에 직류부하 시험 시 직류의 고전압저전류 전원과 직류의 저전압고전류 전원을 직접 접촉하여 동시에 인가함으로써 실제와 같은 직류부하 시험을 수행할 수 있어 신뢰성이 우수한 결과를 도출할 수 있는 효과가 있다.As described above, by using the superconducting cable (a) test apparatus according to the present invention, when the direct current load test to the superconducting cable (a) by directly contacting and applying the high voltage low current power supply of direct current and the low voltage high current power supply of direct current simultaneously Since the DC load test can be performed as shown in FIG.
그리고 상기와 같이 직류의 고전압저전류 및 저전압고전류 전원을 동시에 인가하기 위해 요구되는 시험장치의 설계비용을 절감할 수 있는 효과도 있다.As described above, the design cost of the test apparatus required for simultaneously applying the high voltage low current and the low voltage high current power supply of DC may be reduced.
또한, 직류의 저전압고전류 전원을 인가하는 직류 고전류 공급부(3) 설계 시 초고압의 시험전압을 견딜수 있도록 설계될 필요가 없어 시험장치의 크기 및 부피가 작아지는 이점이 있다.In addition, when designing the DC high current supply unit 3 applying the DC low voltage high current power supply, it is not necessary to be designed to withstand the test voltage of the ultra-high pressure has the advantage that the size and volume of the test apparatus is reduced.
상기 초전도케이블과 해저케이블과 같은 직류고전압 전력장치(1)의 도체온도발생 및 온도 유지 등의 직류부하 시험을 수행하기 위하여 직류의 고전압은 직접 접촉하여 인가하고, 고전류는 유도 방식으로 인가하는 경우에는 상기 초전도케이블과 해저케이블의 도체 외부에 알루미늄 또는 금속재료가 감싸져 있어서 교류전류에 의한 자기유도 와전류 등에 의한 전류손실이 발생하여 해저케이블 및 초전도케이블의 외부 온도가 상승하여 시료의 내외부의 온도조건이 명확하게 규정되어 있는 부하시험 조건에는 부적합하지만, 본 발명에 따른 직류고전압 전력장치(1)는, 고전압과 고전류 모두 초전도케이블 및 해저케이블에 직접 접촉하여 인가할 수 있어 부하시험 조건에 일치할 수 있는 것이다.In order to perform the DC load test such as the generation of the conductor temperature and the temperature maintenance of the DC high voltage power device 1 such as the superconducting cable and the submarine cable, the high voltage of DC is applied in direct contact, and the high current is applied in an inductive manner The aluminum or metal material is wrapped around the conductor of the superconducting cable and the submarine cable, so that current loss occurs due to the magnetic induction eddy current due to the alternating current. Although unsuitable for the clearly defined load test conditions, the DC high voltage power device 1 according to the present invention can be applied by directly contacting the superconducting cable and the submarine cable in both high voltage and high current, and can meet the load test conditions. will be.
그리고 본 발명에 따른 직류고전압 전력장치(1)의 직류부하 시험장치의 경우 더욱 간단한 구성을 가지고, 상기 교류직류 변환기(410)는 저전압 고전류의 성능치가 요구됨으로써 설비 구축에 소요되는 비용을 절감할 수 있고, 직류의 고전압과 고전류를 직접 피시험체(해저케이블 및 초전도케이블 등)에 직접 접촉하여 인가함으로써 직류부하 시험의 신뢰성을 향상시키는 효과가 있는 것이다.And in the case of the DC load test device of the DC high voltage power device 1 according to the present invention has a simpler configuration, the AC DC converter 410 can reduce the cost required for the construction of the facility by requiring a low voltage high current performance value In addition, it is effective to improve the reliability of DC load test by directly applying high voltage and high current of DC directly to the test object (submarine cable and superconducting cable).
이상 본 발명의 특정 실시예를 도시하고 설명하였으나, 본 발명의 기술사상은 첨부된 도면과 상기한 설명내용에 한정하지 않으며 본 발명의 사상을 벗어나지 않는 범위 내에서 다양한 형태의 변형이 가능함은 이 분야의 통상의 지식을 가진 자에게는 자명한 사실이며, 이러한 형태의 변형은 본 발명의 정신에 위배되지 않는 범위 내에서 본 발명의 특허청구범위에 속한다고 볼 것이다.While specific embodiments of the present invention have been illustrated and described, the technical spirit of the present invention is not limited to the accompanying drawings and the above description, and various modifications can be made without departing from the spirit of the present invention. It will be apparent to those skilled in the art, and variations of this type will be regarded as belonging to the claims of the present invention without departing from the spirit of the present invention.

Claims (19)

  1. 피시험체에 전기적으로 연결되는 제1단자로 직류의 고전압저전류 전원을 인가하는 직류고전압 발생기; 및A DC high voltage generator configured to apply DC high voltage low current power to a first terminal electrically connected to the test object; And
    교류의 저전압고전류 전원을 생산한 후 직류의 저전압고전류 전원으로 변환하여 상기 제1단자에 연결되는 제2단자로 직류의 저전압고전류 전원을 인가하며, 상기 제1,2 단자와는 별도로 상기 피시험체와 전기적으로 연결되는 제3단자가 구비되는 직류고전류 발생기;를 포함하며,After producing the AC low voltage high current power supply and converting into DC low voltage high current power supply and applying the DC low voltage high current power to the second terminal connected to the first terminal, and the test object and the first and second terminals It includes; a DC high current generator having a third terminal electrically connected;
    상기 직류고전류 발생기는,The DC high current generator,
    지면에 접지되고, 상기 직류고전류 발생기에서 직류의 저전압고전류 전원을 생산하기 위한 구동력을 제공하는 저전압부;A low voltage unit which is grounded on the ground and provides a driving force for producing a low voltage high current power source of DC in the DC high current generator;
    상기 저전압부로부터 구동력을 제공받아 직류의 저전압고전류 전원을 생산하는 고전압부; 및A high voltage unit receiving a driving force from the low voltage unit to produce a DC low voltage high current power source; And
    상기 저전압부와 고전압부 사이에 배치되어 절연상태를 유지하면서 상기 저전압부의 구동력을 고전압부로 전달하는 절연부;가 구비되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.And an insulation unit disposed between the low voltage unit and the high voltage unit to transmit the driving force of the low voltage unit to the high voltage unit while maintaining the insulation state.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 저전압부는,The low voltage unit,
    상기 직류고전류 발생기에 제어신호를 송신하는 제어부; 및A control unit which transmits a control signal to the DC high current generator; And
    상기 제어부의 제어신호를 수신하여 회전축을 회전시키는 구동모터;가 구비되고,A drive motor for receiving a control signal of the control unit to rotate the rotating shaft;
    상기 고전압부는,The high voltage unit,
    상기 저전압부로부터 구동력을 제공받아 교류의 저전압고전류 전원을 생산하는 발전기;A generator configured to receive a driving force from the low voltage unit to produce an AC low voltage high current power source;
    상기 발전기로부터 전원을 공급받으며, 상기 저전압부로부터 제어신호를 수신하는 컨트롤러; 및A controller receiving power from the generator and receiving a control signal from the low voltage unit; And
    상기 컨트롤러에 의해 제어되어 상기 발전기에서 생산되는 교류의 저전압고전류 전원을 직류의 저전압고전류로 변환하는 교류직류 변환기;가 구비되며,An AC direct current converter controlled by the controller and converting the low voltage high current power of the AC produced by the generator into a low voltage high current of DC;
    상기 절연부는,The insulation portion,
    상기 고전압부와 저전압부를 절연상태를 유지하면서 서로 이격되도록 지지하는 절연지지애자; 및An insulation support insulator supporting the high voltage unit and the low voltage unit to be spaced apart from each other while maintaining an insulation state; And
    상기 저전압부에서 생성되는 구동력을 절연상태를 유지하여 상기 고전압부로 전달하는 동력전달축;이 구비되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high voltage superconducting cable load test apparatus, characterized in that the; is provided with a power transmission shaft for maintaining the insulating state driving force generated in the low voltage unit to the high voltage unit.
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 직류고전압 발생기에서 발생되는 직류의 고전압저전류 전원의 전압은 750V를 초과하며,The voltage of the DC high voltage low current power source generated by the DC high voltage generator exceeds 750V,
    상기 고전압부의 전압은 상기 직류고전압 발생기로부터 인가되는 직류의 고전압저전류 전원을 기준전압으로 하는 0초과 750V 이하의 전압이고,The voltage of the high voltage unit is a voltage of 0 or more and 750V or less, which uses a high voltage low current power supply of DC applied from the DC high voltage generator as a reference voltage,
    상기 저전압부의 전압은 접지된 지면을 기준전압으로 하는 0초과 750V 이하의 전압인 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.The voltage of the low voltage unit is a DC high-voltage superconducting cable load test device, characterized in that the voltage of more than 0 and less than 750V, the ground voltage of the ground.
  4. 청구항 2에 있어서,The method according to claim 2,
    상기 교류직류 변환기는,The AC DC converter,
    상기 발전기로부터 인가되는 전원을 1 내지 100 V 미만의 전압으로 변압하는 감압부;A pressure reducing unit for transforming the power applied from the generator to a voltage of 1 to 100 V or less;
    상기 감압부로부터 변압된 전원을 인가받아 교류전원을 직류전원으로 변환하는 복수의 트랜스부;A plurality of transformers receiving the transformed power from the decompression unit and converting AC power into DC power;
    상기 복수의 트랜스부에 연결되어 상기 제2단자 및 제3단자에 각각 연결되는 한 쌍의 도전부; 및A pair of conductive parts connected to the plurality of transformer parts and respectively connected to the second terminal and the third terminal; And
    상기 교류직류 변환기 내부 상태를 감시하는 진단부;가 구비되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.And a diagnostic unit for monitoring the internal state of the AC DC converter.
  5. 고전압의 직류전류를 인가하여 직류고전압 전력장치의 직류부하를 시험하는 장치에 있어서,In the device for testing the DC load of the DC high voltage power device by applying a high voltage DC current,
    지면에 접지된 상기 직류고전압 전력장치에 직접 접촉되어 각각 직류 고전압과 직류 고전류를 인가하는 직류 고전압 공급부와 직류 고전류 공급부를 포함하며,A DC high voltage supply unit and a DC high current supply unit which are in direct contact with the DC high voltage power device grounded to the ground to apply a DC high voltage and a DC high current, respectively,
    상기 직류 고전류 공급부는 지면에 접지되어 교류의 저전압 고전류를 생산하는 저전압부와, 상기 저전압부에 전기적으로 연결되는 절연분리변압기 및 상기 저전압부로부터 교류의 저전압 고전류를 인가받은 절연분리변압기에서 유도되는 전원을 공급받아 직류의 저전압 고전류를 생산하는 고전압부를 포함하고,The DC high current supply part is grounded to the ground to produce a low voltage high current of AC, an isolation voltage transformer electrically connected to the low voltage part, and a power source derived from an isolation voltage transformer receiving low voltage high current of AC from the low voltage part. It includes a high voltage section for supplying a low voltage high current of direct current,
    상기 직류 고전압 공급부는 단일한 전원공급선을 통하여 직류의 고전압을 인가하고, 상기 직류 고전류 공급부는 복수의 전원공급선을 통하여 직류의 고전류를 인가하고,The DC high voltage supply unit applies a DC high voltage through a single power supply line, the DC high current supply unit applies a DC high current through a plurality of power supply lines,
    상기 고전압부는 상기 직류 고전류 공급부에 연결되는 복수의 전원공급선 사이의 전압차이의 값을 포함하는 범위의 전압성능치를 갖는 저전압 교류직류 변환기가 구비되고,The high voltage unit is provided with a low voltage AC DC converter having a voltage performance value in the range including the value of the voltage difference between the plurality of power supply lines connected to the DC high current supply unit,
    상기 고전압부는 상기 직류 고전압 공급부를 기준전압으로 하여 750V를 초과하는 전압이 발생되고, 상기 저전압부는 접지된 지면을 기준전압으로 하여 0 초과 750V 이하의 전압이 발생되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.The high voltage unit generates a voltage exceeding 750V using the DC high voltage supply unit as a reference voltage, and the low voltage unit generates a voltage exceeding 0 and below 750V using the grounded ground as a reference voltage. tester.
  6. 고전압의 직류전류를 인가하여 직류고전압 전력장치의 직류부하를 시험하는 장치에 있어서,In the device for testing the DC load of the DC high voltage power device by applying a high voltage DC current,
    상기 직류고전압 전력장치에 통전 가능하도록 직접 접촉되어 직류의 고전압을 공급하는 직류 고전압 공급부; 및A direct current high voltage supply unit configured to directly contact the direct current high voltage power device to supply a high voltage of direct current; And
    상기 직류고전압 전력장치에 통전 가능하도록 직접 접촉되어 고전류의 직류전류를 공급하는 직류 고전류 공급부;를 포함하되,And a direct current high current supply unit configured to directly contact the direct current high voltage power device to supply a high current direct current.
    상기 직류 고전압 공급부에서 상기 직류고전압 전력장치로 직류의 고전압을 인가하는 전원공급선은 단일 선으로 구비되고,The power supply line for applying a high voltage of direct current from the DC high voltage supply unit to the DC high voltage power device is provided as a single line,
    상기 직류 고전류 공급부에서 상기 직류고전압 전력장치로 직류의 고전류를 인가하는 또 다른 전원공급선은 직류의 고전류가 인풋(input) 및 아웃풋(output) 되는 복수의 선으로 구비되며,Another power supply line for applying a high current of DC from the DC high current supply unit to the DC high voltage power device is provided with a plurality of lines that the high current of the input (Input) and output (output),
    상기 직류 고전압 공급부는,The DC high voltage supply unit,
    전원을 인가받아 3상교류전류를 정류기를 이용하여 고전압 저전류를 발생하는 직류 고전압원부; 및A DC high voltage source unit generating a high voltage low current using a three-phase alternating current rectifier under power; And
    상기 직류 고전압원부로부터 발생한 고전압 저전류를 인가받아 상기 직류고전압 전력장치에 공급하는 고전압저항;이 구비되고,A high voltage resistor receiving high voltage and low current generated from the DC high voltage source unit and supplying the DC high voltage power device;
    상기 직류 고전류 공급부는,The DC high current supply unit,
    지면에 접지되는 저전압부;A low voltage portion grounded to the ground;
    상기 직류고전압 전력장치에 통전 가능하게 연결되는 고전압부; 및A high voltage unit electrically connected to the DC high voltage power device; And
    상기 저전압부와 고전압부가 절연되도록 하며, 상기 저전압부로부터 교류전원을 인가받아 고전압 교류전원을 발생하는 절연분리변압기;로 구비되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.The high voltage superconducting cable load test apparatus of claim 1, wherein the low voltage unit and the high voltage unit are insulated from each other, and the isolation voltage transformer generates high voltage AC power by receiving AC power from the low voltage unit.
  7. 청구항 6에 있어서,The method according to claim 6,
    상기 저전압부는,The low voltage unit,
    상기 직류 고전류 공급부를 제어하는 제어반;A control panel for controlling the DC high current supply unit;
    상기 제어반에 연결되어 제어신호를 송수신하는 제1통신부; 및A first communication unit connected to the control panel and transmitting and receiving a control signal; And
    상기 제1통신부에 연결되어 제어신호를 수신하여 교류전원을 발생하며, 상기 절연분리변압기로 교류전원을 인가하는 교류전원부;를 구비하는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.And an AC power supply unit connected to the first communication unit to receive a control signal to generate AC power, and supplying AC power to the insulation separation transformer.
  8. 청구항 6에 있어서,The method according to claim 6,
    상기 고전압부는,The high voltage unit,
    상기 절연분리변압기에 연결되어 절연분리변압기에서 발생한 고전압 교류전원을 공급받아 저전압 고전류를 생성하는 교류직류 변환기;An AC DC converter connected to the isolation transformer and configured to receive a high voltage AC power generated from the isolation transformer to generate a low voltage high current;
    상기 교류직류 변환기와 통전 가능하게 연결되어 상기 직류고전압 전력장치에 상기 교류직류 변환기에서 생성된 저전압 고전류를 인가하며, 이 때 인가하는 저전압 고전류를 모니터링 및 제어하는 전압탭부;A voltage tap unit connected to the AC DC converter so as to be energized to apply a low voltage high current generated by the AC DC converter to the DC high voltage power device, and to monitor and control the low voltage high current applied thereto;
    상기 교류직류 변환기 및 전압탭부와 연결되어 출력을 제어하고 측정하며, 상기 전압탭부의 모니터링 데이터를 수신하는 컨트롤부; 및A control unit connected to the AC DC converter and the voltage tap unit to control and measure an output and to receive monitoring data of the voltage tap unit; And
    상기 저전압부로부터 제어신호를 수신하여 상기 컨트롤부를 제어하며, 상기 컨트롤부에 수집된 데이터를 저전압부로 송신하는 제2통신부;를 구비하고,And a second communication unit receiving a control signal from the low voltage unit to control the control unit and transmitting data collected to the low voltage unit to the low voltage unit.
    상기 교류직류 변환기는,The AC DC converter,
    상기 직류 고전류 공급부에 연결되는 복수의 전원공급선 사이의 전압차이가 상기 컨트롤부에 의해 측정되며, 상기 전압차이 값이 상기 교류직류 변환기에 요구되는 전압성능치 이내의 범위에 포함되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.A voltage difference between a plurality of power supply lines connected to the DC high current supply unit is measured by the control unit, and the voltage difference value is included in a range within a voltage performance value required for the AC DC converter. High voltage superconducting cable load tester.
  9. 청구항 6에 있어서,The method according to claim 6,
    상기 고전압부는 상기 저전압부로부터 제어신호를 수신하고, 상기 고전압부에 수집되는 데이터는 상기 저전압부로 송신되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.And the high voltage unit receives a control signal from the low voltage unit, and the data collected in the high voltage unit is transmitted to the low voltage unit.
  10. 청구항 6에 있어서,The method according to claim 6,
    상기 절연분리변압기는,The insulation separation transformer,
    내부에 공간부가 형성되는 절연실린더;An insulating cylinder having a space formed therein;
    상기 절연실린더의 내부에서 서로 마주보도록 이격되어 설치되는 고정프레임;Fixing frames spaced apart from each other to face each other in the insulating cylinder;
    상기 서로 마주보는 고정프레임을 서로 연결하며, 상기 고정프레임에서 상하로 설치되는 복수개의 철심;A plurality of iron cores connected to the fixing frames facing each other and installed up and down in the fixing frame;
    상기 복수개의 철심 중 하부의 철심에 권선되며, 상기 저전압부로부터 저전압의 교류전원을 인가받는 1차코일;A primary coil wound around an iron core below the plurality of iron cores and receiving an AC power having a low voltage from the low voltage unit;
    상기 복수개의 철심 중 상부의 철심에 권선되며, 상기 1차코일로부터 유도되는 고전압 교류전원을 상기 고전압부에 인가하는 2차코일; 및A secondary coil wound around an upper iron core of the plurality of iron cores and configured to apply a high voltage AC power source derived from the primary coil to the high voltage unit; And
    상기 1차코일과 2차코일 사이에서 상기 서로 마주보는 고정프레임을 서로 연결하도록 설치되는 절연지지대;를 구비하는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high-voltage superconducting cable load test apparatus, characterized in that it comprises; an insulating support which is installed to connect the fixed frame facing each other between the primary coil and the secondary coil.
  11. 청구항 10에 있어서,The method according to claim 10,
    상기 절연분리변압기는,The insulation separation transformer,
    상기 절연지지대에 권선되는 절연지;Insulating paper wound around the insulating support;
    상기 절연실린더의 공간부에 충진되는 절연부재; 및An insulating member filled in the space part of the insulating cylinder; And
    상기 절연실린더의 하단에 결합되는 베이스;가 더 구비되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high voltage superconducting cable load test device, characterized in that the base; is further coupled to the lower end of the insulating cylinder.
  12. 청구항 10에 있어서,The method according to claim 10,
    상기 절연실린더는,The insulating cylinder,
    상기 절연실린더의 외주면에서 돌출형성되는 복수의 스커트가 형성되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high voltage superconducting cable load test apparatus, characterized in that a plurality of skirts protruding from the outer peripheral surface of the insulating cylinder is formed.
  13. 청구항 12에 있어서,The method according to claim 12,
    상기 절연부재는 유체인 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC insulation voltage load test device, characterized in that the insulating member is a fluid.
  14. 청구항 11에 있어서,The method according to claim 11,
    상기 절연부재는,The insulating member,
    상기 공간부에 완충되지 않고 상기 절연실린더의 내부에서 상부에 여유공간이 형성되도록 충진되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high-voltage superconducting cable load test apparatus, characterized in that the filling is formed in the upper portion of the insulating cylinder without being buffered in the space.
  15. 청구항 11에 있어서,The method according to claim 11,
    상기 베이스는,The base is,
    상기 절연실린더의 공간부와 연통되는 유로; 및A flow passage communicating with a space portion of the insulating cylinder; And
    상기 베이스의 외면에 구비되어 상기 유로를 개폐하는 덮개부;가 구비되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high voltage superconducting cable load test apparatus, characterized in that the cover portion provided on the outer surface of the base to open and close the flow path.
  16. 청구항 11에 있어서,The method according to claim 11,
    상기 절연지는,The insulating paper,
    상기 절연지지대의 외면에서 수평 및 수직의 혼합형태로 권선되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high voltage superconducting cable load test device, characterized in that the winding in a mixed form of horizontal and vertical on the outer surface of the insulated support.
  17. 청구항 10에 있어서,The method according to claim 10,
    상기 절연실린더는,The insulating cylinder,
    상기 절연실린더의 외면을 감싸도록 설치되는 복수의 밴드;를 더 구비하는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high voltage superconducting cable load test apparatus, characterized in that it further comprises; a plurality of bands installed to surround the outer surface of the insulating cylinder.
  18. 청구항 6에 있어서,The method according to claim 6,
    상기 직류부하 시험장치는,The DC load test device,
    상기 직류 고전압 공급부와 직류 고전류 공급부로부터 피드백 신호를 송수신하는 안전회로부;를 더 구비하는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC high voltage superconducting cable load test apparatus further comprises; a safety circuit unit for transmitting and receiving feedback signals from the DC high voltage supply unit and the DC high current supply unit.
  19. 청구항 6에 있어서,The method according to claim 6,
    상기 고전압부는 상기 직류 고전압 공급부를 기준전압으로 하여 750V를 초과하는 전압이 발생되고,The high voltage unit generates a voltage exceeding 750V using the DC high voltage supply unit as a reference voltage.
    상기 저전압부는 접지된 지면을 기준전압으로 하여 0 초과 750V 이하의 전압이 발생되는 것을 특징으로 하는 직류고전압 초전도케이블 부하시험 장치.DC low-voltage superconducting cable load test device, characterized in that the low voltage unit is generated a voltage of more than 0 and less than 750V using a grounded ground as a reference voltage.
PCT/KR2013/008418 2012-09-18 2013-09-17 Device for testing load of superconducting high-voltage dc cable WO2014046467A1 (en)

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KR1020120103181A KR101898732B1 (en) 2012-09-18 2012-09-18 Test equipment for dc load of dc high voltage power device
KR10-2012-0103181 2012-09-18
KR10-2012-0104127 2012-09-19
KR20120104127A KR101486993B1 (en) 2012-09-19 2012-09-19 Test device of superconducting cable

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CN113589094A (en) * 2021-07-29 2021-11-02 江东金具设备有限公司 High-voltage testing system and high-voltage testing method

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JPH0618587A (en) * 1992-07-02 1994-01-25 Fujikura Ltd Method for applied voltage test of dc power cable
JP2000009778A (en) * 1998-06-18 2000-01-14 Fujikura Ltd D.c. cable electromechanical current-carrying test method and device
JP2001083206A (en) * 1999-09-16 2001-03-30 Fujikura Ltd Energization test method for dc cable
KR20060003704A (en) * 2004-07-07 2006-01-11 한국전력공사 Apparatus for detecting defect in direct current line

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JPH0618587A (en) * 1992-07-02 1994-01-25 Fujikura Ltd Method for applied voltage test of dc power cable
JP2000009778A (en) * 1998-06-18 2000-01-14 Fujikura Ltd D.c. cable electromechanical current-carrying test method and device
JP2001083206A (en) * 1999-09-16 2001-03-30 Fujikura Ltd Energization test method for dc cable
KR20060003704A (en) * 2004-07-07 2006-01-11 한국전력공사 Apparatus for detecting defect in direct current line

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Publication number Priority date Publication date Assignee Title
CN113589094A (en) * 2021-07-29 2021-11-02 江东金具设备有限公司 High-voltage testing system and high-voltage testing method

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