摘要
介绍了某500 kV变电站在处理220 V直流系统一点接地故障时发生220 kV开关无故障跳闸过程。通过分析发现直流系统在一点接地时的电容效应容易造成开关分闸线圈动作,并提出了此类故障处理策略。
This paper introduces the process of 220 kV breaker trouble-free trip during dealing of the DC system grounding at one-point in a 500 kV substation. Through analysis it found that the capacitance effect is easy to cause the breaker tripping coil action when DC system grounds at one-point, and proposed processing strategy of such fault.
出处
《华北电力技术》
CAS
2013年第2期47-49,共3页
North China Electric Power
关键词
变电站
直流系统
一点接地
分闸线圈
电容效应
substation
DC system
grounding at one-point
tripping coil
capacitance effect
