基于超声波法的GIS局部放电测试及分析
徐亮1，邹剑锋2，何峰1，王广2
1 国网浙江平湖市供电公司，浙江 平湖 314200； 2 国网嘉兴供电公司，浙江 嘉兴 314033
摘 要：介绍了引起气体绝缘开关设备(GIS)局部放电的主要缺陷，分析了基于超声波法的GIS局部放电测试的原理、试验接线及注意事项，对部分变电站GIS设备进行了超声波局部放电测试。经测试结果分析表明，若周期峰值小于15mV，应以跟踪监测为主；若大于15mV，应考虑进行分合闸操作，再进行复测，如果信号消失，信号由动静触头接触不良引发的可能性较大，若分合闸不能消除信号，建议停电检查。
关键词：超声波法；气体绝缘开关设备；局部放电
中图分类号：TM591；TM855 文献标识码：A 文章编号：1007-3175(2014)04-0052-04
Partial Discharge Testing of Gas Insulated Switchgear and Analysis Based on Ultrasonic Method
XU Liang1, ZOU Jian-feng2, HE Feng1, WANG Guang2
1 Zhejiang Pinghu Power Supply Company of State Grid, Pinghu 314200, China;
2 Jiaxing Power Supply Company of State Grid, Jiaxing 314033, China
Abstract: Introduction was made to the major defects causing partial discharge of gas insulated switchgear. Analysis was made to the principle of gas insulated switchgear (GIS) partial discharge testing based on the ultrasonic method, test connection, advertent items. Part of GIS equipment in subordinated substations was carried out partial discharge testing based on the ultrasonic. The testing results analysis shows that tracking and monitoring were given priority when the periodic peak value was less than 15 mV; breaking and closing were considered when the periodic peak value was more than 15 mV, and then repetition measurement was carried out. If the signals disappeared, it was more possible for the moving and fixed contacts to turn up bad contact. If the signals didn’t disappear, power cut and examine were suggested.
Key words: ultrasonic method; gas insulated switchgear; partial discharge
参考文献
[1] 高树国，刘海峰，潘瑾，等.一起GIS内部部件松动故障的在线检测与诊断[J].高压电器，2010，46(10)：56-58．
[2] 侍海军，王光前，张少炎.GIS现场绝缘试验技术[J].高压电器，2005，41(1)：55-58.
[3] 高凯，倪浩，杨凌辉.GIS局部放电检测的技术发展和分析[J].华东电力，2012，40(8)：1384-1387.
[4] 刘君华，姚明，黄成军，等.采用声电联合法的GIS局部放电定位试验研究[J].高电压技术，2009，35(10)：2458-2463.
[5] CHEN Chien-yi，TAI Cheng-chi，SU Ching-chau，et al.GIS partial discharge examination and classification from the on-line measurements[C]//International Conference on Condition Monitoring and Diagnasis, 2008.
[6] 王娜，许学勤，谭向宇.基于局部放电统计特性的GIS现场试验[J].云南电力技术，2012，40(1)：76-77.
