一起110kV断路器防跳回路的故障排查与分析  

Troubleshooting and Analysis of Anti-trip Circuit of 110 kV Circuit Breakers

作　　者：陈淑芝 赵双石 王慧 董文宽 李政 宋金川 CHEN Shuzhi;ZHAO Shuangshi;WANG Hui;DONG Wenkuan;LI Zheng;SONG Jinchuan(China Energy Construction Group,Tianjin Electric Power Design Institute Co.,Ltd.,Tianjin 300171,China;Tianjin Keyvia Electric Co.,Ltd.,Tianjin 300392,China)

机构地区：[1]中国能源建设集团天津电力设计院有限公司,天津300171 [2]天津凯发电气股份有限公司,天津300392

出　　处：《电工技术》2024年第9期152-155,共4页Electric Engineering

摘　　要：针对某220 kV变电站110 kV线路故障跳闸事件,通过保护动作信息检查、故障录波检查、监控信息检查、二次回路检查、元器件测试、防跳继电器测试等检修流程,逐步分析故障原因,最终确定断路器存在防跳继电器参数与操作箱插件不匹配的问题,进而导致防跳回路不能正确动作,最后给出了解决方案,为今后类似故障提供了分析思路与排查方法。This paper focuses on an event of fault-induced trip encountered by a 110 kV line in an actual 220 kV substation.It reports the maintenance processes performed for fault diagnosis,including relay′s action information inspection,fault recording inspection,monitoring information inspection,secondary circuit inspection,component test,anti-trip relay test,etc.,and describes the finally determined fault cause,i.e.,a mismatch between parameters of anti-trip relay and operation box plug-ins which resulted in unreliable action of the relay.It also puts forward the solution to provide a basis for future analysis of similar faults.

关 键 词：断路器 防跳 故障分析 时间配合 

分 类 号：TM761[电气工程—电力系统及自动化]