基于脉冲电流法和TEV的开关柜局部放电检测研究
王卫东，张继坤，赵建沛，张高潮
河南省高压电器研究所，河南 平顶山 467000
摘 要：为研究高压开关柜内部局部放电检测方法的有效性，利用35kV智能试验开关柜，在其内部设置高压导体尖端缺陷，运用脉冲电流法和暂态对地电压法(TEV)进行局部放电检测，并通过TEV法进行局部放电源的定位。经现场实际应用可知，脉冲电流法和TEV法是检测开关柜局部放电的有效方法，且两种方法需要配合来综合确认；脉冲电流法抗干扰能力差，TEV法抗干扰能力强，对局部放电源准确定位和能够不停电检测局部放电。
关键词：脉冲电流法；暂态对地电压法；开关柜；局部放电
中图分类号：TM591；TM855 文献标识码：A 文章编号：1007-3175(2015)08-0051-04
Research on Partial Discharge Detection of Switchgear Based on Pulse Current Method and Transient Earth Voltage
WANG Wei-dong, ZHANG Ji-kun, ZHAO Jian-pei, ZHANG Gao-chao
Henan High Voltage Apparatus Research Institute, Pingdingshan 467000, China
Abstract:In order to study the validity of detection method of the high voltage switchgear internal partial discharge, in the 35 kV intelligent test switchgear, the high pressure conductor cutting-edge defects were set. The pulse current method and the transient earth voltage (TEV) method were used to carry out partial discharge detection and the TEV method was adopted to carry out the location of partial discharge sources. After actual application on site, the results show that the pulse current method and the TEV method are the effective ways to detect switchgear partial discharge and the two ways need to be match up to affirm comprehensively. The pulse current method has bad anti-jamming ability, while the TEV method has strong anti-jamming capability, being able to position accurately and to detect partial discharge without power outages.
Key words: pulse current method; transient earth voltage; high voltage switchgear; partial discharge
参考文献
[1] 曾雄杰，江健武，侯俊.TEV和UHF在10kV开关柜带电检测中的应用[J].高压电器，2012，48(1)：41-47.
[2] 任明，彭华东，陈晓清，等.采用暂态对地电压法综合检测开关柜局部放电[J].高电压技术，2010，36(10)：2460-2466.
[3] 赵晓辉，杨景刚，路秀丽，等.油中局部放电检测脉冲电流法与超高频法比较[J]．高电压技术，2008，34(7)：1401-1404.
[4] Chien-Yi Chen, Cheng-Chi Tai, Ching-Chau Su, et al.GIS Partial Discharge Examination and Classification from the On-Line Measurements[C]//2008 International Conference on Condition Monitoring and Diagnasis, 2008.
[5] HAN Xiao-lian, FENG Yin-ping, QIN Yu-chang, et al.Partial Discharge and the Measurement in GIS[C]//Conference Record of the 1996 IEEE International Symposium on Electrical Insulation, 1996.
