摘要
电力系统中发生故障时,保护装置动作并发出跳闸命令,但因故障设备的断路器发生故障而导致拒动,为了尽快隔离故障点,避免事故范围进一步扩大,配置断路器失灵保护作为后备保护显得尤为重要。本文对220kV母线中失灵保护方案进行了详细叙述。
When a fault occurs in the power system,the protection device acts to trip the circuit breakers and send signals.However,the failure of the circuit breaker of the faulty deviceleads to the malfunction of protection.In order to isolate the fault point as soon as possible and avoid further expansion of the failure range,it is particularly important to configure the breaker failure protection as backup protection.In this paper,the failure protection scheme for 220kV busbar is described in detail.
作者
张伟见
宋桂娥
朱军红
胡明会
Zhang Weijian;Song Guie;Zhu Junhong;Hu Minghui(XJ Electric Co.,Ltd,Xuchang,He’nan 461000)
出处
《电气技术》
2020年第2期138-141,共4页
Electrical Engineering
关键词
失灵复合电压
双重失灵
分相计时
断路器失灵
failure composite voltage
double failure
phase separation timing
breaker failure
