500kV断路器保护未正确沟通三跳分析  

Analysis of fault operation of communicated three-phase trip of 500kV circuit breaker protection

作　　者：马越 朱茂森 MA Yue;ZHU Maosen(Maintenance Branch of State Grid Jiangsu Electric Power Co.,Ltd,Nanjing 210003)

机构地区：[1]江苏省电力有限公司检修分公司,南京210003

出　　处：《电气技术》2021年第8期45-47,54,共4页Electrical Engineering

摘　　要：沟通三跳功能广泛应用在500kV继电保护中,具有十分重要的作用。目前沟通三跳功能大多通过断路器保护内部逻辑判断实现,但不同厂家对于该功能的逻辑设计存在一定差异。本文对一起500kV中断路器保护未正确沟通三跳的原因进行分析,并总结常见500kV断路器保护的沟通三跳逻辑,最后给出一些思考和建议供运维检修人员参考。Communicated three-phase trip is widely used and plays an important role in 500kV relay protection.This function is mostly accomplished by internal logic judgment of circuit breaker protection,but there are some differences among manufactures.The reason of a fault operation case of communicated three-phase trip of 500kV circuit breaker protection is analyzed,and the logic of communicated three-phase of several type 500kV circuit breaker protections is summarized.Some suggestions about relay maintenance are given in the end.

关 键 词：断路器保护 沟通三跳 运维检修 

分 类 号：TM561[电气工程—电器]