一起500 kV线路保护断路器位置开入异常分析及处理  

Analysis and Handling of a Circuit Breaker Position Input Abnormality in a 500 kV Line Protection System

作　　者：陆嘉捷 赵耀 雍成思 陈瑛 LU Jiajie;ZHAO Yao;YONG Chengsi;CHEN Ying(State Grid Jiangsu Electric Power Co.,Ltd.,Liyang Power Supply Company,Liyang 213300,China;State Grid Jiangsu Electric Power Co.,Ltd.,Suzhou Power Supply Company,Suzhou 215000,China;State Grid Jiangsu Electric Power Co.,Ltd.,Yangzhou Power Supply Company,Yangzhou 225000,China)

机构地区：[1]国网江苏省电力有限公司溧阳供电分公司,江苏溧阳213300 [2]国网江苏省电力有限公司苏州供电分公司,江苏苏州215000 [3]国网江苏省电力有限公司扬州供电分公司,江苏扬州225000

出　　处：《安徽电气工程职业技术学院学报》2025年第1期15-19,共5页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：断路器位置开入是500 kV线路保护的重要开入量之一。文章以一起500 kV线路保护断路器位置开入异常为例,从回路电位、开入原理、规范、接线等方面进行分析,确定异常原因是接线错误引起边断路器C相跳闸位置异常,最终通过修改现场接线消除异常。并且针对本起断路器位置开入异常事件总结了后续消缺工作中的排查思路和方法,可为500 kV线路保护断路器位置开入异常处理提供指导。The circuit breaker position input is one of the key inputs for 500 kV line protection.In this paper,an abnormal position input in a 500 kV line protection was analyzed from the aspects of circuit potential,input principles,specifications and wiring.It was found that the abnormality was caused by a wiring error,leading to an abnormal C-phase tripping position of the side switch.The abnormality was eliminated by correcting the on-site wiring.Troubleshooting methods were summarized to guide future handling of similar position input abnormalities in 500 kV line protection.

关 键 词：断路器 线路保护 位置开入 异常检测 分析处理 

分 类 号：TM561[电气工程—电器]