一起500kV断路器保护低气压闭重回路异常分析及处理  

Analysis and Handling of Abnormal Low-Pressure Reclosure Circuit in the 500kV Circuit Breaker Protection

作　　者：雍成思 陈瑛 YONG Chengsi;CHEN Ying(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》2024年第4期75-80,共6页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：低气压闭锁重合闸是500kV断路器保护的重要功能之一。文章以一起500 kV断路器保护低气压闭锁重合闸回路异常事件为例,从低气压闭锁重合闸回路接线、电源正负电、辅助接点三方面分析异常原因并给出了处理过程,总结了此类设备在后续运行维护工作中的排查思路和方法。The low-pressure lockout reclosure is one of the critical functions in the protection of 500 kV circuit breakers.This paper takes an abnormal event in the low-pressure lockout reclosure circuit of a 500 kV circuit breaker protection system as an example,and analyzes the causes of the abnormality from three aspects:the wiring of the low-pressure lockout reclosure circuit,power supply polarity,and auxiliary contacts.It also provides the handling process and summarizes the troubleshooting ideas and methods for such equipment in subsequent operation and maintenance work.

关 键 词：断路器保护 闭锁重合闸 弹簧未储能 异常处理 

分 类 号：TM561[电气工程—电器]