摘要
某变电站由于330kV断路器2套跳闸回路未完全隔离,造成2组操作电源中的一负电源消失时,手跳继电器误动作,使断路器三相误跳闸。通过故障原因分析,提出防范措施。
B eeause two sots of trip loop of 330kV breaker were not completely seperated in a substation, when a negative power source disappears in two groups operation power supply, caused the mannual trip relay miss action and made the breaker three-phase miss trip. Through analyzes the cause of the fault, puts forward the preventive measures.
出处
《宁夏电力》
2008年第5期13-15,共3页
Ningxia Electric Power
关键词
电源
断路器
误跳闸
power supply
breaker
miss trip
