摘要
介绍了某变电站220kV GIS交流耐压试验过程中,PT疑似放电击穿的异常现象,经分析发现是开口三角极性错误导致的中性点击穿保险器击穿放电造成的,并对PT二次回路提出了整改意见和总结。
This paper introduces the abnormal discharge of suspected discharge breakdown of the potential transformer during the AC withstand voltage test of 220kV GIS in a substation, and analyzes the reason that the fault of open delta polarity caused discharge of the puncture lightning arrester in neutral-point. At last, it proposes the rectification opinions of the secondary circuit of PT and conclusions.
作者
严鹏志
袁超
黄涛
刘建寅
YAN Pengzhi;YUAN Chao;HUANG Tao;LIU Jianyin(Jiangsu Frontier Electric Technology Co. ,Ltd. ,Nanjing 211102,China)
出处
《电工技术》
2019年第7期124-125,共2页
Electric Engineering
关键词
GIS
电压互感器
开口三角
击穿保险器
GIS
potential transformer
open delta
puncture lightning arrester
