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Field test method for testing performance and secondary circuit of extra-high-voltage direct-current phase-selecting switching-on device

An ultra-high voltage DC, phase-selective closing technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of lack of effective verification of the secondary circuit of the phase-selective closing device and increase the test cost, so as to reduce the test cost, Easy to operate and simple to test the effect of wiring

Active Publication Date: 2017-09-19
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, the special test device increases the test cost; on the other hand, this kind of research is mainly aimed at testing the performance of the phase selection closing device, and lacks effective verification of the secondary circuit related to the phase selection closing device.

Method used

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  • Field test method for testing performance and secondary circuit of extra-high-voltage direct-current phase-selecting switching-on device
  • Field test method for testing performance and secondary circuit of extra-high-voltage direct-current phase-selecting switching-on device
  • Field test method for testing performance and secondary circuit of extra-high-voltage direct-current phase-selecting switching-on device

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Embodiment Construction

[0031] Taking the circuit breaker model HPL550B2 and the corresponding phase-selection closing device model SWITCHSYNCF236 as an example, the performance of the UHV DC phase-selection closing device and the field test method of the secondary circuit in the embodiment of the present invention are further similarly described.

[0032] The implementation steps of the performance of the UHV DC phase selection closing device and the field test method of the secondary circuit in this embodiment include:

[0033] 1) Set the equipment parameters of the tested phase selection closing device, the equipment parameters include circuit breaker closing time T B , phase shift parameter T D1 , Medium time (other delay of contact contact) T D2 , pre-breakdown time T D3 ; Among them, the circuit breaker closing time T B It can be obtained through field measured parameters; medium time T D2 , pre-breakdown time T D3 According to the circuit breaker model, it can be obtained by referring to ...

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Abstract

The invention discloses a field test method for testing the performance and the secondary circuit of an extra-high-voltage direct-current phase-selecting switching-on device. On the basis of correctly setting the parameters of the phase-selecting switching-on device, the output voltage and current signals of a relay tester are connected in series with the corresponding-phase switch and the corresponding voltage and current loops of a switchyard three-phase circuit breaker. After that, a manual switching-on instruction is issued by an instation SCADA system. When all three phases of switches are in the switched-on state, instation fault wave recording data of a test switch are called. According to the time difference between the current starting point of each phase and the voltage zero-crossing point of a corresponding-phase switch, whether the control effect of the phase-selecting switching-on device meets the requirement or not can be judged. The effective test problem of the performance and the corresponding secondary circuit of the phase-selecting switching-on device can be solved. Based on the method, the hardware cost is not increased and the test wiring is simple and convenient in operation. The correctness of the performance and the corresponding secondary circuit of the phase-selecting switching-on device can be effectively verified.

Description

technical field [0001] The invention relates to an ultra-high voltage direct current transmission technology, in particular to an on-site test method for the performance of an ultra-high voltage direct current phase selection closing device and a secondary circuit. Background technique [0002] As an important part of the DC system in the UHV DC converter station, the AC filter is mainly used to filter out the harmonics generated by the converter during the rectification and inversion process and provide reactive power compensation for the DC system, which directly affects the DC system. The size and power quality of the power transmitted by the transmission system. Usually, the capacity of a single set of AC filters in a converter station is relatively large, and switching operations are relatively frequent. Improper selection of filter switching time will generate large transient surge impact and overvoltage. On the one hand, it may cause damage to primary equipment such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 李辉刘海峰赵永生汪霄飞徐浩郭思源欧阳帆吴晋波敖非许立强梁文武余斌朱维钧李刚潘伟臧欣刘宇
Owner STATE GRID CORP OF CHINA
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