出口继电器误动引起断路器异常跳闸的分析  

Analysis of Abnormal Tripping of the Circuit Breaker Caused by the Misoperation of the Export Relay

作　　者：王吉峰[1] 苏兴泉 WANG Jifeng;SU Xingquan(Guangzhou Railway Polytechnic,Guangzhou510430,China)

机构地区：[1]广州铁路职业技术学院,广东广州510430

出　　处：《电工技术》2018年第16期64-66,共3页Electric Engineering

基　　金：学院新引进人才科研启动项目(GTXYR1705);学院质量工程大学生创新创业训练项目(25000249);轨道交通关键装备智能检测与检修创新学术团队(穂科1201610026);王吉峰-徐志标接触网工技能大师工作室(014/11000301)

摘　　要：本文针对某企业6kV#1循环水泵等三台设备断路器异常跳闸故障,给系统的正常稳定运行带来了一定的影响,通过深入分析,找出断路器异常跳闸的根本原因为微机保护装置跳闸出口继电器动作功率偏低,控制电缆长度较长,受到交流感应电及电缆电容电流的影响,导致断路器异常跳闸,提出解决方案及对策,最终及时消除设备故障。Abnormal tripping fault of 6 kV #1 circulating water pump equipment as well as three circuit breaker in an enterprise occurred,which had a certain impact on the normal and stable operation of the system.Through in-depth analysis,the fundamental cause of abnormal tripping was the low action power of tripping of microcomputer relay protection device.The long length of the control cable,which was influenced by AC induction current and capacitance current of the cable,caused the abnormal trip of circuit breaker.The solutions and countermeasures were given,and the equipment failure was ultimately eliminated.

关 键 词：出口继电器 动作功率 断路器跳闸 

分 类 号：TM561[电气工程—电器]