摘要
断路器控制回路作为高压断路器操作的重要神经中枢,其设计可靠性对电力系统安全稳定运行有着重要意义。介绍保护试验人员对某超高压变电站断路器非全相回路实际检验时发生的不经出口压板跳闸现象。分析现象原因,结合运检探究该非全相回路设计方案在极端情况下的可靠性问题,并提出改进建议。
As an important control center for the operation of high-voltage circuit breaker, the design reliability of circuit breaker control circuit is of great significance to the safe and stable operation of power system.The phenomenon of tripping without outlet pressing plate during the actual inspection of the non-full-phase circuit of the circuit breaker in an EHV substation done by the protection tester is described, the causes of the phenomenon are analyzed, and combined with the operation inspection, the reliability of the non-full-phase circuit design scheme in extreme cases is studied, based on which improvement suggestions are put forward.
作者
张博
周恒
程晨
杨勇
ZHANG Bo;ZHOU Heng;CHENG Chen;YANG Yong(Maintenance Company of State Grid Shandong Electric Power Co.,Ltd.,Jinan 250000)
出处
《电力安全技术》
2022年第2期67-69,共3页
Electric Safety Technology
关键词
断路器
控制回路
非全相
继电保护
circuit breaker
control circuit
non-full-phase
relay protection
