CN106383301B - Wiring loop of double-fracture circuit breaker direct-current steady-state voltage distribution and testing method - Google Patents
Wiring loop of double-fracture circuit breaker direct-current steady-state voltage distribution and testing method Download PDFInfo
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- CN106383301B CN106383301B CN201610881611.0A CN201610881611A CN106383301B CN 106383301 B CN106383301 B CN 106383301B CN 201610881611 A CN201610881611 A CN 201610881611A CN 106383301 B CN106383301 B CN 106383301B
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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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
- G01R31/327—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
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a wiring loop and a test method for direct-current steady-state voltage distribution of a double-break circuit breaker, wherein the circuit breaker comprises a grounding terminal break K1 and a high-voltage terminal break K2, the high-voltage terminal break K2 is connected with a direct-current withstand voltage complete set device and a voltmeter U, the grounding terminal break K1 is grounded at one end, and two ends of the grounding terminal break K1 are connected with a discharge spherical gap in parallel; the DC withstand voltage complete equipment comprises a voltage boosting power supply cabinet DCVMS, a DC generator voltage doubling cylinder, a measuring impedance and a protection resistor R p . The invention also discloses a test method for the direct-current steady-state voltage distribution of the double-break circuit breaker, which is used for solving the distribution condition of the proportion of the steady-state voltage by adopting a mode of applying the direct-current voltage by taking the ball gap distance as a variable. The invention examines the voltage distribution condition of the breaker in the direct current steady state by simulating the real operation condition on the spot as much as possible.
Description
Technical Field
The invention relates to the technical field of operation and maintenance of a direct-current transmission system, in particular to a wiring loop for direct-current voltage distribution of two fractures under direct-current steady-state voltage of a double-fracture circuit breaker and a test method.
Background
The double-break circuit breaker is widely applied to an electric power system, wherein the alternating current filter circuit breaker is one of the double-break circuit breaker and is used as important equipment of a converter station, harmonic waves generated in the alternating current-direct current conversion process can be reduced, and the quality of electric energy is guaranteed to reach the standard. The alternating current filter circuit breaker (hereinafter referred to as an ACF circuit breaker) needs to cut off a capacitive load due to its special application, and switching is frequent, wherein the distribution of the direct current voltage at two fractures affects the success rate of the circuit breaker, and the distribution of the direct current voltage at two fractures should be measured compared with a common circuit breaker.
When the circuit breaker cuts the capacitive load of the alternating current filter, the voltage at two ends of the fracture changes. Because the circuit breaker and the capacitive load theoretically can not have temporary change after the capacitive load, and simultaneously because the filter capacitor has larger capacitance, the voltage drops slowly, thereby being equivalent to applying a direct current voltage on the side of the circuit breaker.
At present, international standards, domestic standards and industrial standards do not specify the voltage distribution of the double-break circuit breaker, and a corresponding test method and a test wiring loop do not exist. However, most of the double-break circuit breakers are located outdoors, the surface resistance of the circuit breakers can change due to the existence of dirt, and meanwhile, the direct-current voltage is distributed according to the surface resistance, so that the research on the distribution of the direct-current voltage is of great significance. However, because the impedance of the direct current voltage divider is small, the impedance of the direct current voltage divider changes after the direct current voltage divider is directly incorporated into a fracture, and the voltage measurement is distorted.
Disclosure of Invention
In order to accurately measure the distribution condition of the direct-current voltage between the fractures of the circuit breaker, one of the purposes of the invention is to provide a direct-current steady-state voltage distribution test wiring loop of the double-fracture circuit breaker based on the requirement of measuring the direct-current steady-state voltage distribution of the double-fracture circuit breaker, so as to simulate the real operation condition on site as much as possible and check the distribution condition of the direct-current steady-state voltage of the circuit breaker.
In order to realize the purpose, the invention adopts the technical scheme that:
the utility model provides a wiring return circuit of two break circuit breaker direct current steady state voltage distribution, includes the circuit breaker, and it has earthing terminal fracture K1 and high-voltage terminal fracture K2, its characterized in that: the high-voltage end fracture K2 is connected with a direct-current withstand voltage complete set device and a voltmeter U, one end of the fracture K1 of the grounding end is grounded, and two ends of the fracture K1 of the grounding end are connected with a discharge ball gap in parallel; the DC voltage withstanding complete equipment comprises a voltage boosting power supply cabinet DCVMS, a DC generator voltage doubling cylinder, a measuring impedance and a protective resistor R p (ii) a The voltage boosting power supply cabinet DCVMS outputs a square wave power supply to the direct current generator voltage doubling cylinder after receiving the control command; the DC voltage doubling cylinder comprises an intermediate frequency transformer TT, a rectifier diode D1, a rectifier diode D2 and an isolation resistor R e Voltage-multiplying capacitor C S 1 and a voltage-multiplying capacitor C S 2, the intermediate frequency transformer TT is connected with the square wave current of the boosting power supply cabinet DCVMS after passing through a current meter and a voltage-multiplying capacitor Cs1 on the primary side, and the secondary side is connected with an isolation capacitor in seriesResistance R e Said isolation resistor R e The other end is connected with a rectifier diode D1 and a voltage-multiplying capacitor C in the forward direction S 2, voltage-multiplying capacitor C S The other end of the rectifier diode D2 is connected with a negative direction connecting rectifier diode D2, the other end of the rectifier diode D2 is also connected with a high-voltage output end of a direct current generator voltage-multiplying cylinder, and a positive direction port of the rectifier diode D2 and a negative direction port of the rectifier diode D1 are connected with a voltage-multiplying capacitor C S 1 one end connected with the low-voltage output end of the DC voltage doubling cylinder and a voltage doubling capacitor C S The other end of the 1 is connected back to the intermediate frequency transformer TT after passing through an ammeter, and the low-voltage output end of the direct current generator voltage doubling cylinder is grounded; one end of the measuring impedance is connected with the low-voltage output end of the direct-current generator voltage doubling cylinder 22, and the other end of the measuring impedance is connected with a high-voltage end fracture K2 of the circuit breaker; protective resistor R p The two ends of the high-voltage end fracture K2 are respectively connected with the low-voltage output end of the direct-current generator voltage doubling cylinder.
Furthermore, the device also comprises a grounding loop which comprises grounding resistors R connected in series e And a switch K, the other end of the switch K is grounded, and a ground resistor R e The other end is connected with a high-voltage end fracture K2.
The invention also aims to provide a test method for the direct-current steady-state voltage distribution of the double-break circuit breaker, which adopts the actually-measured circuit breaker with the discharge ball gap distance as a variable to apply direct-current voltage to realize the measurement of the direct-current steady-state voltage distribution condition of the break of the circuit breaker.
In order to achieve the purpose, the invention adopts the technical scheme that:
a test method for DC steady-state voltage distribution of a double-break circuit breaker adopts the wiring loop of the DC steady-state voltage distribution of the double-break circuit breaker, and comprises the following steps:
step 4, increasing the gap distance of the discharge ball gap, entering the step 1 for circulating operation, stopping circulating until the gap distance exceeds a threshold distance, and recording U1 and U under different gap distances;
and 5, calculating the ratio of the direct-current steady-state voltages of the grounding end fracture with different gap distances to U1/U.
And further, carrying out three breakdown tests on the discharge ball gap at each gap distance, and carrying out average processing on the obtained ball gap direct-current breakdown voltage value U1 and the direct-current generator output voltage U.
Compared with the prior art, the invention has the beneficial effects that: by using the DC voltage generator test device and the measuring ball gap, a DC high voltage is applied to one fracture of the circuit breaker, and the other fracture is grounded, wherein two sides of the grounded fracture are connected with the measuring ball gap in parallel, and the voltage is applied to the breakdown of the ball gap, so that the distributed bearing voltage value of the two fractures can be calculated, and the purpose of measuring the voltage distribution of the double-fracture circuit breaker under the working condition of steady-state DC voltage is achieved.
Drawings
FIG. 1 is a schematic diagram of a wiring loop for DC steady state voltage distribution for a double break circuit breaker according to the present invention;
fig. 2 is a schematic structural diagram of a double-break circuit breaker;
fig. 3 is a schematic flow chart of a test method of the direct current steady-state voltage distribution of the double-break circuit breaker according to the present invention;
Detailed Description
The invention is described in further detail below with reference to the following drawings and detailed description.
Referring to fig. 1 and 2, a wiring loop of a double-break circuit breaker with a direct-current steady-state voltage distribution is used for testing a tested product of the double-break circuit breaker, wherein the double-break circuit breaker is generally used for circuit breakers of alternating-current filters, and the circuit breakers are all circuit breakers of 220kV or above; the wiring loop comprises a circuit breaker 1 with an earth terminal fracture K1 and a high-voltage terminal fracture K2, wherein the high-voltage terminal fracture K2 is connected with a direct-current withstand voltage complete setThe device 2 and the voltmeter U, the belonging grounding terminal fracture K1 is grounded at one end, and the two ends of the grounding terminal fracture K1 are connected with the discharge ball gap 3 in parallel; the direct current withstand voltage complete equipment 2 comprises a boosting power supply cabinet DCVMS, a direct current generator voltage doubling cylinder 22, a measuring impedance 23 and a protective resistor R p (ii) a The voltage boosting power supply cabinet DCVMS outputs a square wave power supply to the direct current generator voltage doubling cylinder 22 after receiving the control command; the DC voltage doubling cylinder 22 comprises an intermediate frequency transformer TT, a rectifier diode D1, a rectifier diode D2 and an isolation resistor R e Voltage-multiplying capacitor C S 1 and a voltage-multiplying capacitor C S 2, the intermediate frequency transformer TT is connected with the square wave current of the boosting power supply cabinet DCVMS after passing through an ammeter 21 and a voltage-multiplying capacitor Cs1 on the primary side, and is connected with an isolation resistor R in series on the secondary side e Said isolation resistance R e The other end is connected with a rectifier diode D1 and a voltage-multiplying capacitor C in the forward direction S 2, voltage-multiplying capacitor C S 2, the other end of the positive electrode is connected with a negative direction connecting rectifier diode D2, the other end of the positive electrode is also connected with a high voltage output end of a direct current generator voltage doubling cylinder 22, and a positive direction port of the rectifier diode D2 and a negative direction port of the rectifier diode D1 are connected with a voltage doubling capacitor C in common S 1 one end connected with the low-voltage output end of the DC voltage doubling cylinder 22 and a voltage doubling capacitor C S The other end of the 1 is connected back to the intermediate frequency transformer TT after passing through an ammeter 21, and the low-voltage output end of the direct current generator voltage doubling cylinder 22 is grounded; one end of the measuring impedance 23 is connected with the low-voltage output end of the direct-current generator voltage doubling cylinder 22, and the other end of the measuring impedance is connected with a high-voltage end fracture K2 of the circuit breaker 1; protective resistor R p Are respectively connected with the high-voltage end fracture K2 and the low-voltage output end of the direct-current generator voltage doubling cylinder 22.
As another embodiment, the wiring loop further comprises a grounding loop 24 which comprises grounding resistors R connected in series e And a switch K, the other end of the switch K is grounded, and a grounding resistor R e The other end is connected with a high-voltage end fracture K2.
The boost power supply cabinet DCVMS: different gears are selected according to actual requirements in a high-voltage output range, and after a boosting instruction is received, a square wave power supply with variable amplitude is output to the direct-current generator voltage-multiplying cylinder 22.
The direct current generator voltage doubling cylinder 22 is used for boosting the square wave power supply through a built-in intermediate frequency transformer TT, and outputting high voltage through rectifier diodes D1 and D2 in the square wave power supply.
The above-mentioned
The working principle and the working process are as follows:
(1) pre-stabilizing an input power supply: because the voltage of the power grid fluctuates, the power supply voltage is firstly stabilized to output the required direct-current low-voltage power supply in advance, and because the ultra-wide output range needs to be met, the influence of the fluctuation amplitude of the power grid on the direct current output of the main loop is reduced;
(2) chopper boost (low voltage feedback): outputting a zero-start output power supply by a pre-stabilized low-voltage direct-current power supply in a chopping boosting mode, and taking output low voltage as a feedback signal to output an adjustable high-stability direct-current low-voltage power supply;
(3) chopper boost (high voltage feedback): the high-stability direct-current low-voltage power supply is output to the low-voltage power supply in a chopping boosting mode, and the high-voltage is taken as a feedback signal, so that the fluctuation of the high-voltage can be automatically adjusted to output the high-stability direct-current low-voltage power supply;
(4) bridge inversion: inverting the high-stability direct-current low-voltage power supply into a square wave power supply with adjustable amplitude;
(5) intermediate frequency transformer TT, dc generator voltage doubling cylinder 22, measurement cylinder (not shown): the square wave power supply is boosted through an intermediate frequency transformer TT, and then rectified through rectifier diodes D1 and D2 to output high voltage, and the voltage doubling adopts double-bridge-arm output, so that the ripple factor can be reduced; the high-voltage measurement and high-voltage sampling signals adopt high-voltage resistors with high precision, high stability and low temperature drift.
The invention relates to a test method for DC steady-state voltage distribution of a double-break circuit breaker, which is characterized in that on the basis of a wiring loop of the DC steady-state voltage distribution of the double-break circuit breaker, a discharge ball gap distance actual measurement circuit breaker is adopted as a variable to apply DC voltage, so that the measurement of the DC steady-state voltage distribution condition of the break of the circuit breaker is realized, and as shown in figure 3, the test method comprises the following steps:
TABLE 1 Voltage distribution measurement grouping
| Ball gap length (mm) | Breakdown voltage of ball gap U1 (kV) | DC side test voltage U (kV) | Ratio of direct current steady state voltage at ground break (%) |
| 6 | / | / | / |
| 12 | / | / | / |
| 19 | / | / | / |
| 30 | / | / | / |
step 4, increasing the gap distance of the discharge ball gap 3, entering the step 1 for circulating operation, stopping circulating until the gap distance exceeds a threshold distance, and recording U1 and U under different gap distances;
and 5, calculating the ratio of the direct-current steady-state voltages of the grounding end fracture with different gap distances to U1/U.
As another example, in the test of the withstand voltage, since the discharge of the ball gap has a certain dispersion, the breakdown test is performed three times for the ball gap at each gap distance. The double-break circuit breaker carries out test voltage according to the groups in the table 1, and the obtained spherical gap direct current breakdown voltage value U1 and the direct current generator output voltage U are subjected to average processing, so that the direct current steady-state voltage distribution condition of the double-break circuit breaker can be measured.
The description is given by taking a test example of the direct-current steady-state voltage distribution of a 500kV double-break circuit breaker of a certain converter station. The double-break circuit breaker adopts the ball gap to carry out potential distribution measuring result, as shown in table 2 below, can measure the fracture potential distribution condition under the different ball gap distances:
TABLE 2 fracture potential distribution at different gap distances
According to test data analysis, the positive polarity and the negative polarity of the direct-current steady-state voltage distribution of the fractures are basically equal, the direct-current steady-state voltage proportion of the grounding fractures is increased along with the increase of the distance of the spherical gap, the maximum direct-current steady-state voltage proportion is 44%, and the direct-current steady-state voltage distribution of the double fractures can be accurately measured.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (3)
1. The utility model provides a test method of two break circuit breaker direct current steady state voltage distribution, adopts the wiring return circuit of two break circuit breaker direct current steady state voltage distribution, the wiring return circuit of two break circuit breaker direct current steady state voltage distribution includes circuit breaker (1), and it has earthing terminal fracture K1 and high-voltage terminal fracture K2, its characterized in that: the high-voltage end fracture K2 is connected with a direct-current withstand voltage complete set device (2) and a voltmeter U, one end of the fracture K1 of the grounding end is grounded, and two ends of the fracture K1 of the grounding end are connected with a discharge ball gap (3) in parallel; the direct current withstand voltage complete equipment (2) comprises a voltage boosting power supply cabinet DCVMS, a direct current generator voltage doubling cylinder (22), a measuring impedance (23) and a protective resistor R p (ii) a The DCVMS receives the control command and then outputs a square wave power supply to the DC generator voltage doubling cylinder (22); the direct current generator voltage doubling cylinder (22) comprises an intermediate frequency transformer TT, a rectifier diode D1, a rectifier diode D2 and an isolation resistor R e Voltage-multiplying capacitor C S 1 and a voltage-multiplying capacitor C S 2, the intermediate frequency transformer TT is connected with the square wave current of the boosting power supply cabinet DCVMS after the primary side passes through an ammeter (21) and a voltage-multiplying capacitor Cs1, and the secondary side is connected with an isolation resistor R in series e Said isolation resistor R e The other end is connected with a rectifier diode D1 and a voltage-multiplying capacitor C in the forward direction S 2, voltage-multiplying capacitor C S 2 the other end is connected with a negative direction connecting rectifier diode D2, the other end is also connected with a high voltage output end of a direct current generator voltage doubling cylinder (22), the positive direction port of the rectifier diode D2 and the negative direction port of the rectifier diode D1 are connected with a voltage doubling capacitor C S 1 one end connected with the low-voltage output end of a DC voltage doubling cylinder (22) and a voltage doubling capacitor C S The other end of the transformer 1 is connected back to the intermediate frequency transformer TT after passing through an ammeter (21), and the low-voltage output end of the direct current generator voltage doubling cylinder (22) is grounded; one end of the measuring impedance (23) is connected with the direct current generator voltage doubling cylinder (2)2) The other end of the low-voltage output end of the circuit breaker (1) is connected with a high-voltage end fracture K2 of the circuit breaker (1); protective resistor R p The two ends of the high-voltage end fracture K2 are respectively connected with the low-voltage output end of the direct-current generator voltage doubling cylinder (22); the method comprises the following steps:
step 1, a direct current generator voltage doubling cylinder (22) is adopted to independently perform a breakdown test on a discharge ball gap (3) with a fixed gap distance, and a ball gap direct current breakdown voltage value under the gap is obtained and recorded as U1;
step 2, applying direct-current high voltage to a high-voltage end fracture K2 of the circuit breaker (1), and connecting two grounded ends of the grounding end fracture K1 in parallel with a discharging spherical gap (3) with a fixed gap distance in the step 1;
step 3, raising the test voltage of the direct current withstand voltage test device at a constant speed until the spherical gap breaks down, and recording the output voltage of the direct current generator as U;
step 4, increasing the gap distance of the discharge ball gap (3), entering the step 1 for circulating operation, stopping circulating until the gap distance exceeds a threshold distance, and recording U1 and U under different gap distances;
and 5, calculating the ratio of the direct current steady-state voltages of the fractures of the grounding ends with different gap distances to be U1/U.
2. The method for testing the DC steady-state voltage distribution of a dual-break circuit breaker according to claim 1, further comprising a ground loop (24) including a ground resistor R connected in series e And a switch K, the other end of the switch K is grounded, and a ground resistor R e The other end is connected with a high-voltage end fracture K2.
3. The method for testing the direct-current steady-state voltage distribution of the double-break circuit breaker according to claim 1, further comprising performing three breakdown tests on the discharge ball gap at each gap distance, and averaging the obtained ball gap direct-current breakdown voltage value U1 and the direct-current generator output voltage U.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253317A (en) * | 2011-04-28 | 2011-11-23 | 南方电网科学研究院有限责任公司 | High-altitude power transmission grade alternating current, direct current and impact combined superimposed voltage test method |
| CN202676815U (en) * | 2012-05-03 | 2013-01-16 | 中国西电电气股份有限公司 | Follow current interrupting test circuit for externally gapped line arrester |
| CN105021980A (en) * | 2015-06-23 | 2015-11-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | AC filter circuit breaker double-break voltage distribution feature evaluation system and method |
| CN105137135A (en) * | 2015-08-13 | 2015-12-09 | 国家电网公司 | Simulated electromagnetic disturbance source for isolating switch |
| CN105785247A (en) * | 2016-04-29 | 2016-07-20 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Circuit-breaker alternating current and direct current mixing voltage withstanding wiring loop used for alternating current filter and test method thereof |
-
2016
- 2016-09-30 CN CN201610881611.0A patent/CN106383301B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253317A (en) * | 2011-04-28 | 2011-11-23 | 南方电网科学研究院有限责任公司 | High-altitude power transmission grade alternating current, direct current and impact combined superimposed voltage test method |
| CN202676815U (en) * | 2012-05-03 | 2013-01-16 | 中国西电电气股份有限公司 | Follow current interrupting test circuit for externally gapped line arrester |
| CN105021980A (en) * | 2015-06-23 | 2015-11-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | AC filter circuit breaker double-break voltage distribution feature evaluation system and method |
| CN105137135A (en) * | 2015-08-13 | 2015-12-09 | 国家电网公司 | Simulated electromagnetic disturbance source for isolating switch |
| CN105785247A (en) * | 2016-04-29 | 2016-07-20 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Circuit-breaker alternating current and direct current mixing voltage withstanding wiring loop used for alternating current filter and test method thereof |
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