WO2014046467A1 - Dispositif pour tester une charge de câble à courant continu (cc) haute tension supraconducteur - Google Patents

Dispositif pour tester une charge de câble à courant continu (cc) haute tension supraconducteur 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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WIPO (PCT)
Prior art keywords
voltage
unit
high voltage
current
power
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PCT/KR2013/008418
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English (en)
Korean (ko)
Inventor
양병모
박진우
장태인
조흥상
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한국전력공사
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Priority claimed from KR1020120103181A external-priority patent/KR101898732B1/ko
Priority claimed from KR20120104127A external-priority patent/KR101486993B1/ko
Application filed by 한국전력공사 filed Critical 한국전력공사
Publication of WO2014046467A1 publication Critical patent/WO2014046467A1/fr

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

Abstract

La présente invention porte sur un dispositif pour tester une charge d'un câble CC haute tension supraconducteur et, plus spécifiquement, sur un dispositif pour tester une charge d'un câble CC haute tension supraconducteur, qui peut réaliser un test par application simultanée d'une puissance CC haute tension et d'une puissance CC à courant élevé dans une manière de contact direct afin de tester un câble supraconducteur sur lequel une tension CC élevée est à appliquer, et qui a des faibles coûts de conception.
PCT/KR2013/008418 2012-09-18 2013-09-17 Dispositif pour tester une charge de câble à courant continu (cc) haute tension supraconducteur WO2014046467A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020120103181A KR101898732B1 (ko) 2012-09-18 2012-09-18 직류고전압 전력장치의 직류부하 시험장치
KR10-2012-0103181 2012-09-18
KR10-2012-0104127 2012-09-19
KR20120104127A KR101486993B1 (ko) 2012-09-19 2012-09-19 초전도케이블 시험장치

Publications (1)

Publication Number Publication Date
WO2014046467A1 true WO2014046467A1 (fr) 2014-03-27

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Application Number Title Priority Date Filing Date
PCT/KR2013/008418 WO2014046467A1 (fr) 2012-09-18 2013-09-17 Dispositif pour tester une charge de câble à courant continu (cc) haute tension supraconducteur

Country Status (1)

Country Link
WO (1) WO2014046467A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113589094A (zh) * 2021-07-29 2021-11-02 江东金具设备有限公司 一种高压测试***和高压测试方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618587A (ja) * 1992-07-02 1994-01-25 Fujikura Ltd 直流電力ケーブルの課通電試験方法
JP2000009778A (ja) * 1998-06-18 2000-01-14 Fujikura Ltd 直流ケーブル課通電試験方法及びその装置
JP2001083206A (ja) * 1999-09-16 2001-03-30 Fujikura Ltd 直流ケーブル課通電試験方法
KR20060003704A (ko) * 2004-07-07 2006-01-11 한국전력공사 직류 선로의 고장 판별 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618587A (ja) * 1992-07-02 1994-01-25 Fujikura Ltd 直流電力ケーブルの課通電試験方法
JP2000009778A (ja) * 1998-06-18 2000-01-14 Fujikura Ltd 直流ケーブル課通電試験方法及びその装置
JP2001083206A (ja) * 1999-09-16 2001-03-30 Fujikura Ltd 直流ケーブル課通電試験方法
KR20060003704A (ko) * 2004-07-07 2006-01-11 한국전력공사 직류 선로의 고장 판별 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113589094A (zh) * 2021-07-29 2021-11-02 江东金具设备有限公司 一种高压测试***和高压测试方法

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