CN111352026A - Online testing device and online testing method for non-full-phase protection of circuit breaker body - Google Patents
Online testing device and online testing method for non-full-phase protection of circuit breaker body Download PDFInfo
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- CN111352026A CN111352026A CN201811572838.2A CN201811572838A CN111352026A CN 111352026 A CN111352026 A CN 111352026A CN 201811572838 A CN201811572838 A CN 201811572838A CN 111352026 A CN111352026 A CN 111352026A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
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Abstract
A breaker body non-full-phase protection online testing device and a testing method are provided, the device comprises: temporary protection module and test module, wherein: the temporary protection module is connected into a non-full-phase protection loop of a breaker body of the operating equipment during testing, the non-full-phase protection function of the breaker body during testing is completed, and meanwhile, a non-full-phase protection system of the breaker body of the operating equipment is isolated; the test module tests the isolated breaker body non-full-phase protection system; the temporary protection module and the test module are physically independent of each other in hardware. The device and the method can complete the test of each project under the condition that primary equipment does not stop running, and the time relay, the outlet relay and the related loop can be used as a whole to be tested, so that the non-full-phase protection overall performance of the breaker body is tested, and the defect of component testing is overcome.
Description
Technical Field
The invention relates to the field of power equipment, in particular to a breaker body non-full-phase protection online testing device and method.
Background
In a power grid with voltage class of 220kV or above, a circuit breaker with split-phase operation is generally adopted, and when a power system runs, due to various reasons such as equipment quality, operation and the like, three phases of the circuit breaker can break one phase or two phases, so that the three phases of the circuit breaker can not run in a full phase. In order to prevent the damage of the abnormal state to the power grid, the non-full-phase protection of the circuit breaker is provided.
Different from other relay protection devices of power equipment installed indoors with an air conditioner, the non-full-phase protection of the circuit breaker is basically installed in an outdoor circuit breaker body local convergence control box, and the operating environment of the convergence control box, such as temperature, humidity, pH value, dust and the like, is much worse than the indoor environment of the air conditioner. The electronic components are quickly aged, and the action contacts are easy to have poor oxidation contact or adhesion in operation, so that the misoperation or the failure of the breaker body due to the incomplete phase protection is caused; in addition, the aging of the time element is easy to cause larger deviation between the action time and the setting value, so that the non-full-phase protection action of the circuit breaker body cannot avoid the single-phase reclosing time and the reclosing failure is caused, and the accident is enlarged. In order to discover the hidden dangers as early as possible, the non-full-phase protection function of the circuit breaker body is periodically tested. The current testing process for the non-full-phase protection of the put-into-operation breaker body is as follows: under the state that primary equipment has a power failure, a full-phase protection time relay and an outlet intermediate relay are detached from a circuit breaker body control collection box, the action characteristics of the time relay and the outlet intermediate relay are respectively checked by a relay protection calibrator, and the wiring condition of a non-full-phase protection related loop of the circuit breaker body is checked to comprehensively judge whether the non-full-phase protection performance of the circuit breaker body can be continuously put into operation. This test method has two drawbacks: (1) the method comprises the following steps that a primary device of the tested breaker body under non-full-phase protection has to be powered off, the power failure of the primary device not only causes economic loss, but also reduces the redundancy of primary operation devices of a power grid and influences the operation safety of the power grid, and at present, no instrument capable of testing the non-full-phase protection of the breaker body under the operation state of the primary device exists; (2) the testing method is characterized in that the relay protection instrument is used for respectively testing the performance of a single device of the non-full-phase protection of the circuit breaker body, and then the non-full-phase protection performance of the circuit breaker body is comprehensively judged by checking the connection of a secondary circuit, only partial performance is actually detected, the overall performance of the connection of the relay and related circuits cannot be tested, and no instrument is specially used for testing the overall performance of the non-full-phase protection of the circuit breaker body in a local control box of the circuit breaker.
Disclosure of Invention
In order to overcome the defects of the existing breaker body non-full-phase protection test, the invention provides the breaker body non-full-phase protection online test device which can test various performances of the breaker body non-full-phase protection under the condition that primary equipment does not stop running.
One aspect of the present disclosure provides a circuit breaker body non-full-phase protection online test device, including interim protection module and test module, wherein:
the temporary protection module is connected into a non-full-phase protection loop of a breaker body of the operating equipment during testing, so that the non-full-phase protection function of the breaker body during testing is completed, and meanwhile, a non-full-phase protection system of the breaker body of the operating equipment is isolated;
the test module tests the isolated non-full-phase protection system of the circuit breaker body to finish one or more tests including but not limited to action time, action voltage/return voltage, action power and non-full-phase protection overall performance;
the temporary protection module and the test module are physically independent of each other in hardware.
Preferably, the temporary protection module comprises a bottom plate (1), and a transfer switch (2), a time relay (3), an intermediate relay (4), an isolation terminal block (5), a time relay resistor (6) and an intermediate relay resistor (7) which are fixed on the bottom plate (1), wherein:
one end of a coil of the time relay (3) is connected with a corresponding terminal of the isolation terminal row (5), the other end of the coil is respectively connected with the time relay resistor (6) and the left side of a first auxiliary contact of the change-over switch (2), the other end of the time relay resistor (6) is connected with the right side of the first auxiliary contact of the change-over switch (2), and the common end of the auxiliary contact is connected with the corresponding terminal of the isolation terminal row (5);
one end of a delay action contact of the time relay (3) is connected to a corresponding terminal of the isolation terminal row (5), and the other end of the delay action contact is connected to one side of a coil of the intermediate relay (4);
the other side of the coil of the intermediate relay (4) is respectively connected with the intermediate relay resistor (7) and the left side of a second auxiliary contact of the change-over switch (2), the other end of the intermediate relay resistor (7) is connected with the right side of the second auxiliary contact of the change-over switch (2), and the common end of the auxiliary contact is connected with the corresponding terminal of the isolation terminal row (5);
the 4 pairs of auxiliary contacts of the intermediate relay (4) are all connected to respective terminals of the isolated terminal block (5).
Preferably, the change-over switch (2) has three positions of 110V, exit and 220V, when the position is 110V, the left side of the auxiliary contact is connected, the right side of the auxiliary contact is disconnected, when the position is exit, the left side and the right side of the auxiliary contact are both disconnected, and when the position is 220V, the left side of the auxiliary contact is disconnected, and the right side of the auxiliary contact is connected.
Preferably, the rated voltage of the time relay (3) and the rated voltage of the time relay resistor (6) are both direct current 110V, the coil resistance of the time relay (3) is the same as the resistance of the time relay resistor (6), and the error is not more than +/-0.5%.
Preferably, the action delay time of the time relay (3) can be set, and the setting range is 0.0 to 10.0 seconds.
Preferably, the rated voltage of the intermediate relay (4) and the rated voltage of the intermediate relay resistor (7) are both direct current 110V, the coil resistance value of the intermediate relay (4) is the same as the resistance value of the intermediate relay resistor (7), the error is not more than +/-0.5%, and the action power of the intermediate relay (4) is more than or equal to 5 watts.
Preferably, the isolation terminal row (5) is provided with current terminals, the number of the terminals is not less than 13, a connecting piece capable of being disconnected is arranged in the middle of each terminal, and jacks are respectively arranged on the inner side and the outer side of each terminal, so that a test wire with a plug can be plugged.
Preferably, the test module comprises a circuit board (8), and a plug (9), a power supply module (10), a rectifier (11), an A/D analog-to-digital sampling module (12), a DSP processor (13), an I/O switching value sampling module (14), a man-machine module (15), a gated thyristor (16), a memory (17) and an interface terminal row (18) which are fixed on the circuit board (8), wherein:
the plug (9) is matched with a 220V alternating current power socket and provides input power for the power module (10) and the rectifier (11);
the power supply module (10) outputs direct current to the A/D analog-digital sampling module (12), the DSP processor (13), the I/O switching value sampling module (14), the man-machine module (15) and the memory (17) to provide working power supply for the A/D analog-digital sampling module;
the human-machine module (15) is connected with the DSP (13) in a bidirectional mode, the human-machine module (15) can set a test mode and parameters, send corresponding test instructions and data to the DSP (13) and also receive and display information of the DSP (13);
the rectifier (11) outputs direct-current voltage, the anode of the direct-current voltage is connected with the gated thyristor (16) in series and then connected to the inner side of the corresponding current terminal of the interface terminal row (18), the cathode of the direct-current voltage is directly connected to the inner side of the corresponding current terminal of the interface terminal row (18), and the A/D analog-digital sampling module (12) samples the direct-current voltage and the current output by the rectifier (11) and converts the direct-current voltage and the current into digital signals to be output to the DSP (13);
the on or off of the gated thyristor (16) is controlled by the output pulse of the DSP processor (13);
the input end of the I/O switching value sampling module (14) is connected with the inner side of a current terminal of the interface terminal row (18), and switching value information is collected and converted into a digital signal to be sent to the DSP (13);
the DSP processor (13) is connected with the rectifier (11) in a bidirectional mode, the DSP processor (13) can receive running state information of the rectifier (11), and can send control signals for adjusting and controlling the output voltage and the current of the rectifier (11) to the rectifier (11) according to the output voltage and the current of the rectifier (11) sent by the A/D analog-digital sampling module (12) and the switching value signal sent by the I/O switching value sampling module (14) and in combination with a test mode set by the man-machine module (15);
the memory (17) is connected with the DSP processor (13) and can receive and store the test data of the DSP processor (13);
the memory (17) is bidirectionally connected with the man-machine module (15) and is used for storing man-machine interaction information and reading stored test data and reports.
Another aspect of the present disclosure provides a circuit breaker body non-full-phase protection online test method using any one of the above circuit breaker body non-full-phase protection online test apparatuses, including the following steps:
connecting the temporary protection module into a non-full-phase protection loop of a breaker body of the operating equipment, executing a non-full-phase protection function of the breaker body during testing, and isolating a non-full-phase protection system of the breaker body of the operating equipment;
testing the isolated non-full-phase protection system of the circuit breaker body by using the test module;
and recovering the work of the non-full-phase protection system of the tested circuit breaker body after the test is finished.
This is disclosed through insert interim protection module in the circuit breaker body non-full phase protection return circuit of operation equipment, will be surveyed the non-full phase protection system of circuit breaker body and isolate, and then test the non-full phase protection system of circuit breaker body who is isolated with test module, has realized the on-line measuring to the non-full phase protection system of circuit breaker body. Compared with the prior art, the beneficial effect of this disclosure is: the testing device not only can complete the testing of each project under the condition that primary equipment is in a non-power-off running state, but also can test the time relay, the outlet relay and the related loop as a whole, thereby checking the overall performance of the non-full-phase protection of the breaker body, eliminating the defects of the sub-element testing and ensuring the high reliability of the non-full-phase protection testing of the breaker body.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.
Fig. 1 shows a circuit configuration diagram of a temporary protection module of a non-full-phase protection online test device of a circuit breaker body according to an exemplary embodiment;
FIG. 2 shows a circuit block diagram of a circuit breaker body non-full phase protection in-line testing device test module according to an exemplary embodiment;
fig. 3 shows a flow chart of a method for online testing of non-full phase protection of a circuit breaker body according to an exemplary embodiment.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The online testing device for the non-full-phase protection of the breaker body of the exemplary embodiment comprises a temporary protection module and a testing module, wherein:
the temporary protection module is connected into a non-full-phase protection loop of a breaker body of the operating equipment during testing, the non-full-phase protection function of the breaker body during testing is completed, and meanwhile, a non-full-phase protection system of the breaker body of the operating equipment is isolated;
the test module tests the isolated non-full-phase protection system of the circuit breaker body to finish one or more tests including but not limited to action time, action voltage/return voltage, action power and non-full-phase protection overall performance;
the temporary protection module and the test module are physically independent of each other in hardware.
Fig. 1 and 2 show circuit configurations of the temporary protection module and the test module, respectively, in an exemplary embodiment.
As shown in fig. 1, the temporary protection module in the exemplary embodiment includes: bottom plate 1 and change over switch 2, time relay 3, auxiliary relay 4, isolation terminal row 5, time relay resistance 6, auxiliary relay resistance 7 of fixing on bottom plate 1, wherein:
one end of the coil of the time relay 3 is connected with the corresponding terminal of the isolation terminal row 5, the other end is respectively connected with the time relay resistor 6 and the left side of the first auxiliary contact of the change-over switch 2, the other end of the time relay resistor 6 is connected with the right side of the first auxiliary contact of the change-over switch 2, the common end of the auxiliary contact is connected with the corresponding terminal of the isolating terminal row 5, one end of the time delay action contact of the time relay 3 is connected with the corresponding terminal of the isolating terminal row 5, the other end is connected with one side of the coil of the intermediate relay 4, the other side of the coil of the intermediate relay 4 is respectively connected with the intermediate relay resistor 7 and the left side of the second auxiliary contact of the change-over switch 2, the other end of the intermediate relay resistor 7 is connected with the right side of the second auxiliary contact of the change-over switch 2, the auxiliary contacts are connected in common to respective terminals of the isolated terminal block 5, and the 4 pairs of auxiliary contacts of the intermediate relay 4 are all connected to respective terminals of the isolated terminal block 5.
Preferably, the change-over switch 2 has three shift positions of "110V", "exit", and "220V", and the left side of the auxiliary contact is on and the right side is off when the shift position is "110V", and both the left side and the right side of the auxiliary contact are off when the shift position is "exit", and the left side of the auxiliary contact is off and the right side is on when the shift position is "220V".
Preferably, the rated voltage of the time relay 3 and the rated voltage of the time relay resistor 6 are both direct current 110V, the coil resistance of the time relay 3 is the same as the resistance of the time relay resistor 6, and the error is not more than +/-0.5%.
Preferably, the action delay time of the time relay 3 can be set, and the setting range is 0.0 second to 10.0 seconds.
Preferably, the rated voltages of the intermediate relay 4 and the intermediate relay resistor 7 are both direct current 110V, the coil resistance of the intermediate relay 4 is the same as the resistance of the intermediate relay resistor 7, the error is not more than +/-0.5%, and the action power of the intermediate relay 4 is not less than 5 watts.
Preferably, the isolation terminal row 5 is provided with current terminals, the number of the terminals is not less than 13, a connecting piece capable of being disconnected is arranged in the middle of each terminal, and jacks are respectively arranged on the inner side and the outer side of each terminal, so that a test wire with a plug can be plugged.
As shown in fig. 2, the test module in the present exemplary embodiment includes: the circuit board 8 and fix plug 9, power module 10, rectifier 11, AD analog-to-digital sampling module 12, DSP treater 13, I/O switching value sampling module 14, man-machine module 15, gated thyristor 16, memory 17, interface terminal row 18 on circuit board 8, wherein: the plug 9 is matched with a 220V alternating current power socket and provides input power for the power module 10 and the rectifier 11; the power supply module 10 outputs direct current to the A/D analog-digital sampling module 12, the DSP processor 13, the I/O switching value sampling module 14, the man-machine module 15 and the memory 17 to provide working power supply for the A/D analog-digital sampling module, the DSP processor and the I/O switching value sampling module;
the man-machine module 15 is bidirectionally connected with the DSP 13, and the man-machine module 15 can set a test mode and parameters, send corresponding test instructions and data to the DSP 13 and also receive and display information of the DSP 13;
the rectifier 11 outputs direct current voltage, the anode of the direct current voltage is connected with the gated thyristor 16 in series and then connected to the inner side of the corresponding current terminal of the interface terminal row 18, the cathode of the direct current voltage is directly connected to the inner side of the corresponding current terminal of the interface terminal row 18, and the A/D analog-to-digital sampling module 12 samples the direct current voltage and the current output by the rectifier 11 and converts the direct current voltage and the current into digital signals to be output to the DSP 13; the on or off of the gated thyristor 16 is controlled by the output pulse of the DSP processor 13;
the input end of the I/O switching value sampling module 14 is connected with the inner side of the current terminal of the interface terminal row 18, collects switching value information and converts the switching value information into a digital signal to be sent to the DSP 13;
the DSP processor 13 is connected with the rectifier 11 in a bidirectional way, the DSP processor 13 can receive the running state information of the rectifier 11, and can send out a control signal for regulating and controlling the output voltage and the current of the rectifier 11 to the rectifier 11 according to the output voltage quantity and the current quantity of the rectifier 11 sent by the A/D analog-digital sampling module 12 and the switching value signal sent by the I/O switching value sampling module 14, and in combination with the test mode set by the man-machine module 15;
the memory 17 is connected with the DSP processor 13 and can receive and store the test data of the DSP processor 13; the memory 17 is bidirectionally connected with the man-machine module 15 and is used for storing man-machine interaction information and reading stored test data and reports.
In this embodiment, the test modes set on the human-machine module 15 include a time test, an action/return voltage test, an action power test, and a whole-renting test, where the whole-renting test refers to a test on the overall performance of the non-full-phase protection of the circuit breaker body; the set parameters comprise the non-full-phase protection rated voltage of the circuit breaker body and the setting time.
Fig. 3 is a flow chart of an exemplary embodiment of a non-full-phase protection online test method for a circuit breaker body using any one of the online test devices of the present invention, including the following steps:
connecting the temporary protection module into a non-full-phase protection loop of a breaker body of the operating equipment, executing a non-full-phase protection function of the breaker body during testing, and isolating a non-full-phase protection system of the breaker body of the operating equipment;
testing the isolated non-full-phase protection system of the circuit breaker body by using the test module;
and recovering the work of the non-full-phase protection system of the tested circuit breaker body after the test is finished.
The temporary module is connected into the non-full-phase protection circuit of the circuit breaker in a redundant and then switching mode by utilizing a jack outside a current terminal of the non-full-phase protection system of the tested circuit breaker body in an online connection mode, replaces the non-full-phase protection system of the tested circuit breaker body to execute a temporary non-full-phase protection function of the circuit breaker body, and isolates the non-full-phase protection system of the tested circuit breaker body;
the test module can perform various tests such as time test, action/return voltage test, action power test, non-full-phase protection overall performance test and the like on the isolated non-full-phase protection system of the circuit breaker body.
The embodiment of the online testing device for the non-full-phase protection of the circuit breaker body shown in fig. 1 and 2 is applied, and the specific process of online detecting the tested system by using the testing method is further described in detail as follows.
(1) The temporary protection module is connected to operate on line and isolates the non-full-phase protection system of the tested breaker body:
the non-full-phase protection rated working voltage of the breaker body of the operating equipment is verified on site, and then the conversion handle of the conversion switch 2 of the temporary protection module is pulled to the corresponding position. The test wire with plugs at two ends is used for correspondingly connecting the terminals on the isolation terminal row 5 with the outer sides of the current terminals of the breaker body under operation, which are not protected by the full phase, one by one, and disconnecting the middle connecting piece of the current terminals of the breaker body under test, which is inserted with the test wire and protected by the full phase, which is not protected by the full phase. The temporary protection module of the online testing device for the non-full-phase protection of the circuit breaker body is put into operation, and a circuit breaker body non-full-phase protection system of the operating equipment is isolated.
(2) The isolated breaker body non-full-phase protection system is tested by the test module:
test modes such as time test, action/return voltage test, action power test, entire lease test and the like can be selected on the man-machine module 15 according to different test requirements to carry out the test. The specific process is described as follows according to the mode.
And (3) time testing: after the testing module of the online testing device for the non-full-phase protection of the circuit breaker body is electrified normally, a time testing mode is selected on the man-machine module 15, the non-full-phase protection parameters of the tested circuit breaker body are set, and the gated thyristor 16 is cut off. The test line with plugs at two ends is used for correspondingly connecting the terminals on the interface terminal row 18 with the corresponding positions of the time relays at the inner sides of the terminals of the non-full-phase protection system of the tested circuit breaker body one by one, and a test instruction is started on the man-machine module 15. The DSP processor 13 sends out an output voltage signal to the rectifier 11 according to the non-full-phase protection rated voltage of the tested breaker body, and further adjusts the output voltage signal through a voltage feedback signal sent by the A/D analog-to-digital sampling 12 until the voltage value output by the rectifier 11 is equal to the non-full-phase protection rated working voltage of the tested breaker body, the error is less than or equal to +/-0.2%, then the DSP processor 13 sends out a conducting pulse to the gated thyristor 16 and starts timing, the timing is stopped when the DSP processor 13 receives a switching value displacement signal sent by the I/O switching value sampling 14, and the DSP processor 13 marks the time difference as the action time of the measured time relay; the DSP processor 13 stops sending conducting pulses to the gated thyristor 16 and starts timing, the timing is stopped when the DSP processor 13 receives the switching value displacement signal sent by the I/O switching value sampling 14, the DSP processor 13 marks the time difference as the release time of the measured time relay, and the time test is finished. After the test command is started to select the test mode, the test module automatically completes the time test process.
Action/return voltage test: and selecting an action/return voltage test mode on the man-machine module 15, setting non-full-phase protection parameters of the body of the tested circuit breaker, and stopping the gated thyristor 16. The test line with plugs at two ends is used for correspondingly connecting the terminals on the interface terminal row 18 with the corresponding positions of the intermediate relays at the inner sides of the non-full-phase protection terminals of the tested breaker body one by one, and a test instruction is started on the man-machine module 15. The DSP processor 13 issues a turn-on pulse to the gated thyristor 16. The DSP processor 13 sends an output voltage increasing control signal to the rectifier 11 every 100 milliseconds, the control signal is set according to 1.0% of the rated working voltage of the tested breaker body non-full-phase protection, the DSP processor 13 simultaneously monitors whether the switching value signal sent by the I/O switching value sampling 14 is displaced in the 100 millisecond interval, and if the switching value signal is not displaced in the 100 millisecond interval, the DSP processor continues to send an output voltage increasing control signal in the next 100 millisecond interval. If the switching value signal is shifted within the 100 millisecond interval, the voltage value sent by the A/D analog-to-digital sampling 12 is recorded, and the voltage is recorded as the action voltage value of the tested intermediate relay. Then, the DSP processor 13 sends a control signal for reducing the output voltage to the rectifier 11 every 100 milliseconds, the control signal is set according to 1.0% of the rated voltage of the tested breaker body for the non-full-phase protection, the DSP processor 13 simultaneously monitors whether the switching value signal sent from the I/O switching value sampling 14 is shifted within the 100 millisecond interval, and if the switching value signal is not shifted within the 100 millisecond interval, the DSP processor continues to send a control signal for reducing the output voltage at the next 100 millisecond interval. If the switching value signal is displaced within the 100 millisecond interval, the voltage value sent by the A/D analog-to-digital sampling 12 is recorded and is used as the return voltage value of the tested intermediate relay, and the action/return voltage test is finished. After the test command is initiated to select the test mode, the test module automatically completes the action/return voltage test process.
And (3) testing the action power: and selecting an action power test mode on the man-machine module 15, setting non-full-phase protection parameters of the body of the tested circuit breaker, and stopping the gated thyristor 16. The test line with plugs at two ends is used for correspondingly connecting the terminals on the interface terminal row 18 with the corresponding positions of the intermediate relays at the inner sides of the non-full-phase protection terminals of the tested breaker body one by one, and a test instruction is started on the man-machine module 15. The DSP processor 13 issues a turn-on pulse to the gated thyristor 16. The DSP processor 13 sends an increasing output current control signal to the rectifier 11, the control signal is set according to 1.0% of rated current of the tested intermediate relay, the DSP processor 13 simultaneously monitors whether the switching value signal from the I/O switching value sampling 14 is displaced in the 100 millisecond interval, if the switching value signal is not displaced in the 100 millisecond interval, the DSP processor continues to send an increasing output current control signal in the next 100 millisecond interval. If the switching value signal is displaced in the interval of 100 milliseconds, the voltage value and the current value sent by the A/D analog-digital sampling 12 are recorded, and the power is calculated and recorded as the action power of the tested intermediate relay. The action power test is ended. After the test instruction is started to select the test mode, the test module automatically completes the action power test process.
Testing the whole tenant: and selecting an action entire renting mode on the man-machine module 15, setting non-full-phase protection parameters of the tested breaker body, and stopping the gated thyristor 16. The test line with plugs at two ends is used for correspondingly connecting the terminals on the interface terminal row 18 with the corresponding positions on the inner side of the non-full-phase protection terminal of the tested breaker body one by one, and a test instruction is started on the man-machine module 15. The DSP processor 13 sends an output voltage signal to the rectifier 11 according to the non-full-phase protection rated voltage of the tested breaker body, then the DSP processor 13 sends a conducting pulse to the gated thyristor 16 and starts timing, the timing is stopped when the DSP processor 13 receives a switching value displacement signal sent by the I/O switching value sampling 14, the DSP processor 13 marks the time difference as the non-full-phase protection whole-renting action time of the tested breaker body, and the whole-renting test is finished. After the test command is started to select the test mode, the test module automatically completes the whole renting test process.
(3) After the test is finished, the operation of the non-full-phase protection system of the tested circuit breaker body is recovered:
after the online testing device for the non-full-phase protection of the breaker body finishes each testing item of the non-full-phase protection of the tested breaker body, firstly, the testing line plugs connected with the testing module of the online testing device for the non-full-phase protection of the breaker body at all corresponding positions on the inner side of the non-full-phase protection terminal of the tested breaker body are pulled out, the middle connecting piece of the current terminal of the non-full-phase protection of the tested breaker body is connected and compressed, then, the testing line plugs connected with the temporary protection module of the online testing device for the non-full-phase protection of the breaker body at all corresponding positions on the outer side of the non-full-phase protection terminal of the tested breaker body are pulled out, and the non-full-phase protection of the.
According to the online testing device and the testing method for the non-full-phase protection of the circuit breaker body, the temporary protection module is connected into the non-full-phase protection loop of the circuit breaker body of the operating device, the non-full-phase protection system of the circuit breaker body to be tested is isolated, the testing module is used for testing the non-full-phase protection system of the circuit breaker body to be tested, and online detection of the non-full-phase protection system of the circuit breaker body is achieved. Compared with the prior art, the beneficial effect of this disclosure is: the testing device not only can complete the testing of each project under the condition that primary equipment is in a non-power-off running state, but also can test the time relay, the outlet relay and the related loop as a whole, thereby checking the overall performance of the non-full-phase protection of the breaker body, eliminating the defects of the sub-element testing and ensuring the high reliability of the non-full-phase protection testing of the breaker body.
The foregoing is illustrative of the present invention and various modifications and changes in form or detail will readily occur to those skilled in the art based upon the teachings herein and the application of the principles and principles disclosed herein, which are to be regarded as illustrative rather than restrictive on the broad principles of the present invention.
Claims (9)
1. The utility model provides a circuit breaker body is online testing arrangement of protection of full phase not, its characterized in that, includes interim protection module and test module, wherein:
the temporary protection module is used for being connected into a non-full-phase protection loop of a circuit breaker body of the operating equipment during testing, completing the non-full-phase protection function of the circuit breaker body during testing and isolating a non-full-phase protection system of the circuit breaker body of the operating equipment;
the test module is used for testing the isolated non-full-phase protection system of the circuit breaker body and completing one or more tests including but not limited to action time, action voltage/return voltage, action power and non-full-phase protection overall performance;
the temporary protection module and the test module are physically independent of each other in hardware.
2. The on-line testing device for non-full-phase protection of circuit breaker body according to claim 1, characterized in that the temporary protection module comprises a bottom plate (1) and a transfer switch (2), a time relay (3), an intermediate relay (4), an isolation terminal row (5), a time relay resistor (6) and an intermediate relay resistor (7) fixed on the bottom plate (1), wherein:
one end of a coil of the time relay (3) is connected with a corresponding terminal of the isolation terminal row (5), the other end of the coil is respectively connected with the time relay resistor (6) and the left side of a first auxiliary contact of the change-over switch (2), the other end of the time relay resistor (6) is connected with the right side of the first auxiliary contact of the change-over switch (2), and the common end of the auxiliary contact is connected with the corresponding terminal of the isolation terminal row (5);
one end of a delay action contact of the time relay (3) is connected to a corresponding terminal of the isolation terminal row (5), and the other end of the delay action contact is connected to one side of a coil of the intermediate relay (4);
the other side of the coil of the intermediate relay (4) is respectively connected with the intermediate relay resistor (7) and the left side of a second auxiliary contact of the change-over switch (2), the other end of the intermediate relay resistor (7) is connected with the right side of the second auxiliary contact of the change-over switch (2), and the common end of the auxiliary contact is connected with the corresponding terminal of the isolation terminal row (5);
the 4 pairs of auxiliary contacts of the intermediate relay (4) are all connected to respective terminals of the isolated terminal block (5).
3. The on-line testing device for the non-full-phase protection of the circuit breaker body as claimed in claim 2, wherein the change-over switch (2) has three gears of 110V, exit and 220V, when the gear is 110V, the left side of the auxiliary contact is connected, and the right side of the auxiliary contact is disconnected, when the gear is exit, the left side and the right side of the auxiliary contact are both disconnected, and when the gear is 220V, the left side of the auxiliary contact is disconnected, and the right side of the auxiliary contact is connected.
4. The circuit breaker body non-full-phase protection online testing device according to claim 3, wherein the rated voltage of the time relay (3) and the time relay resistor (6) is 110V direct current, the coil resistance of the time relay (3) and the resistance of the time relay resistor (6) are the same, and the error is not more than +/-0.5%.
5. The circuit breaker body non-full-phase protection online testing device according to claim 3, characterized in that the action delay time of the time relay (3) can be set, and the setting range is 0.0 to 10.0 seconds.
6. The circuit breaker body non-full-phase protection online testing device according to claim 3, wherein rated voltages of the intermediate relay (4) and the intermediate relay resistor (7) are both direct current 110V, the coil resistance of the intermediate relay (4) is the same as the resistance of the intermediate relay resistor (7), the error is not more than +/-0.5%, and the action power of the intermediate relay (4) is not less than 5W.
7. The on-line testing device for the non-full-phase protection of the circuit breaker body according to claim 2, wherein the isolating terminal block (5) is provided with current terminals, the number of the terminals is not less than 13, a connecting piece capable of being disconnected is arranged in the middle of each terminal, jacks are respectively arranged on the inner side and the outer side of each terminal, and a test wire with a plug can be plugged in each jack.
8. The circuit breaker body non-full-phase protection online testing device according to claim 1, wherein the testing module comprises a circuit board (8) and a plug (9), a power supply module (10), a rectifier (11), an A/D (analog to digital) sampling module (12), a DSP (digital signal processor) processor (13), an I/O (input/output) switching value sampling module (14), a man-machine module (15), a gated thyristor (16), a memory (17) and an interface terminal row (18) which are fixed on the circuit board (8), wherein:
the plug (9) is matched with a 220V alternating current power socket and provides input power for the power module (10) and the rectifier (11);
the power supply module (10) outputs direct current to the A/D analog-digital sampling module (12), the DSP processor (13), the I/O switching value sampling module (14), the man-machine module (15) and the memory (17) to provide working power supply for the A/D analog-digital sampling module;
the human-machine module (15) is connected with the DSP (13) in a bidirectional mode, the human-machine module (15) can set a test mode and parameters, send corresponding test instructions and data to the DSP (13) and also receive and display information of the DSP (13);
the rectifier (11) outputs direct-current voltage, the anode of the direct-current voltage is connected with the gated thyristor (16) in series and then connected to the inner side of the corresponding current terminal of the interface terminal row (18), the cathode of the direct-current voltage is directly connected to the inner side of the corresponding current terminal of the interface terminal row (18), and the A/D analog-digital sampling module (12) samples the direct-current voltage and the current output by the rectifier (11) and converts the direct-current voltage and the current into digital signals to be output to the DSP (13);
the on or off of the gated thyristor (16) is controlled by the output pulse of the DSP processor (13);
the input end of the I/O switching value sampling module (14) is connected with the inner side of a current terminal of the interface terminal row (18), and switching value information is collected and converted into a digital signal to be sent to the DSP (13);
the DSP processor (13) is connected with the rectifier (11) in a bidirectional mode, the DSP processor (13) can receive running state information of the rectifier (11), and can send control signals for adjusting and controlling the output voltage and the current of the rectifier (11) to the rectifier (11) according to the output voltage and the current of the rectifier (11) sent by the A/D analog-digital sampling module (12) and the switching value signal sent by the I/O switching value sampling module (14) and in combination with a test mode set by the man-machine module (15);
the memory (17) is connected with the DSP processor (13) and can receive and store the test data of the DSP processor (13);
the memory (17) is bidirectionally connected with the man-machine module (15) and is used for storing man-machine interaction information and reading stored test data and reports.
9. An online testing method for non-full-phase protection of a breaker body by using the device of any one of claims 1-8, comprising the following steps:
connecting the temporary protection module into a non-full-phase protection loop of a breaker body of the operating equipment, executing a non-full-phase protection function of the breaker body during testing, and isolating a non-full-phase protection system of the breaker body of the operating equipment;
testing the isolated non-full-phase protection system of the circuit breaker body by using the test module;
and recovering the work of the non-full-phase protection system of the tested circuit breaker body after the test is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572838.2A CN111352026A (en) | 2018-12-21 | 2018-12-21 | Online testing device and online testing method for non-full-phase protection of circuit breaker body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811572838.2A CN111352026A (en) | 2018-12-21 | 2018-12-21 | Online testing device and online testing method for non-full-phase protection of circuit breaker body |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067984A (en) * | 2020-09-03 | 2020-12-11 | 国家电网有限公司 | Non-full-phase function testing device for circuit breaker |
| US20220018903A1 (en) * | 2020-07-16 | 2022-01-20 | Panduit Corp. | Disconnect Verification |
| CN114295977A (en) * | 2022-03-09 | 2022-04-08 | 广东电网有限责任公司佛山供电局 | Monitoring system for non-full-phase opening of circuit breaker and construction method thereof |
-
2018
- 2018-12-21 CN CN201811572838.2A patent/CN111352026A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220018903A1 (en) * | 2020-07-16 | 2022-01-20 | Panduit Corp. | Disconnect Verification |
| CN112067984A (en) * | 2020-09-03 | 2020-12-11 | 国家电网有限公司 | Non-full-phase function testing device for circuit breaker |
| CN114295977A (en) * | 2022-03-09 | 2022-04-08 | 广东电网有限责任公司佛山供电局 | Monitoring system for non-full-phase opening of circuit breaker and construction method thereof |
| CN114295977B (en) * | 2022-03-09 | 2022-05-27 | 广东电网有限责任公司佛山供电局 | Monitoring system for non-full-phase opening of circuit breaker and construction method thereof |
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