220 kV倒置式电流互感器故障分析  

Fault Analysis of a 220 kV Inverted Current Transformer

作　　者：张湘毅 赵全胜 何向东 胡伟 王国亮 张轶鹏 翟娜娜 付庆磊 ZHANG Xiangyi;ZHAO Quansheng;HE Xiangdong;HU Wei;WANG Guoliang;ZHANG Yipeng;ZHAI Nana;FU Qinglei(State Grid Beijing Urban Power Supply Company,Beijing 100034,China;Zhengzhou Power Supply Company,State Grid Henan Power Company,Zhengzhou 450052,China;Zhengzhou Xianglong Electric Power Co.,Ltd.,Zhengzhou 450006,China)

机构地区：[1]国网北京城区供电公司,北京100034 [2]国网河南省电力公司郑州供电公司,河南郑州450052 [3]郑州祥龙电力股份有限公司,河南郑州450006

出　　处：《电工技术》2021年第11期156-159,共4页Electric Engineering

摘　　要：某变电站一台220 kV倒置式电流互感器故障引起线路跳闸,通过分析发现是由于长期负压使电流互感器外部潮气从密封不严处进入本体,引起器身绝缘性能下降,最终造成短路放电故障。A 220 kV inverted current transformer fault in a substation caused a line trip.Through analysis,it is found that the long-term negative pressure causes the external moisture of the current transformer to enter the body from the loosely sealed place,which causes the insulation performance of the body to decrease,and finally causes the short-circuit discharge failure.

关 键 词：电流互感器 跳闸 绝缘性能 短路放电 

分 类 号：TM406[电气工程—电器]