摘要
总结了断路器假分闸故障的几种现象及判断方法,对3个变电站断路器在操作过程中发现的假分闸故障实例进行分析,验证判断方法的正确性,并提出变电站各线路侧(主变压器侧)各相安装带电显示器,倒闸操作拉、合线路侧(主变压器侧)隔离开关前检查带电显示器,旁路断路器代其他断路器的倒闸操作时检查断路器分、合闸各相电流等建议,为及早发现假分闸故障、有效避免电网事故发生提供参考。
Analyzed the ways of judging the circuit breaker mis-separated position. With analyzing three parctial examples that the circuit breaker was in mis-separated position, demonstrated relevant ideas. Moreover, methods for providing against accidents was put forward. It was installing EVI voltage indicator on the line side （the transformer side）, check the EVI voltage indicator before operating the isolator of the line side （the transformer side）. Check all the phase current before the bypass circuit breaker was operated to instead of the other circuit breaker, so it would found the mis-separated position in advance that could avoid accident of the power gTid.
出处
《内蒙古电力技术》
2013年第6期47-50,共4页
Inner Mongolia Electric Power
关键词
断路器
假分闸
隔离开关
弧光
倒闸操作
电流
circuit breaker
mis-separated position
isolator
elctric arc
isolatoroperation
current
