两起继电保护误整定导致误跳闸事故分析  

Analysis of Two Cases of Relay Protection Missetting Resulting in Mistrip Accidents

作　　者：张祥 李慧勇 ZHANG Xiang;LI Huiyong(Inner Mongolia Power(Group)Co.,Ltd.Ulanqab Power Supply Branch,Inner Mongolia Ulanqab 012000,China)

机构地区：[1]内蒙古电力(集团)有限责任公司乌兰察布供电分公司,内蒙古乌兰察布012000

出　　处：《农村电气化》2023年第11期39-40,共2页Rural Electrification

摘　　要：继电保护装置的正确动作是保证电力系统安全稳定运行的先决条件,而保护定值的误整定将会导致保护拒动或者误动。文章对一起误整定导致区外故障发生误跳闸和一起误整定导致负荷波动引发误跳闸案例进行分析,探讨导致断路器误跳闸的原因,提出杜绝此类事件再次发生的防范措施。The correct operation of the relay protection device is the prerequisite to ensure the safe and stable operation of the power system,and the missetting of the protection setting value will lead to the protection rejection or misoper-ation.This paper analyzes a case of missetting leading to an out-of-area fault trip and a case of missetting leading to load fluctuation leading to false trip of the circuit breaker,and discusses the causes of false trip of the circuit breaker.Finally put forward the prevention measures to prevent the recurrence of such incidents.

关 键 词：继电保护 保护误动 误整定 

分 类 号：TM465[电气工程—电器]