一起220kV主变引线折弯过大造成的故障跳闸  

Failure Trip Caused by Excessive Bending of 220kV Main Transformer Lead

作　　者：胡鹏涛 贾发军 杨宗海 吴永钊 张瑜 朱建伟 陈磊 吴越人 HU Peng-tao;JIA Fa-jun;YANG Zong-hai;WU Yong-zhao;ZHANG Yu;ZHU Jian-wei;CHEN Lei;WU Yue-ren(State Grid Henan Electric Power Company Zhengzhou Power Supply Company,Zhengzhou 450006,China;Xuchang Electric Intel ligent Power Equipment Co.Ltd.,Xuchang 461000,China)

机构地区：[1]国网河南省电力公司郑州供电公司,河南郑州450006 [2]许昌电测智能电力装备有限公司,河南许昌461000

出　　处：《电气开关》2025年第1期90-92,104,共4页Electric Switchgear

摘　　要：某220kV主变本体重瓦斯保护动作、差动保护动作、本体压力释放动作,三侧断路器跳闸。为A相调压绕组上部引线折弯处导线,存在绝缘破损,匝间产生环流发热,变压器长期运行,最终导致击穿放电故障。A 220kV main transformer weight gas protection action,differential protection action,body pressure release action,three-side circuit breaker trip.There is insulation damage in the lead bend of the upper part of the A-phase regulator winding,and the circulation between turns generates heat,and the transformer runs for A long time,which eventually leads to breakdown and discharge fault.

关 键 词：动作 引线折弯 色谱分析 击穿放电 

分 类 号：TM406[电气工程—电器]