摘要
通过对一起发电机出口PT一次保险异常熔断导致机组跳闸事件原因的分析,指出了PT一次保险选用、保护装置电压取样方式等方面存在的不足,提出了改进和防范措施。
The reasons of a unit trip-out accident caused by abnormal melt of the fuse in PT primary side in the generator outlet were analyzed.The defections in the selection of PT primary fuse and in the voltage sampling mode of the protection device were pointed out;the improvement and preventive measures were put forward.
出处
《华电技术》
CAS
2011年第2期37-37,40,共2页
HUADIAN TECHNOLOGY
关键词
接地保护
一次保险
保险熔断
发电机PT
ground protection
primary fuse
fuse melt
potential transformer(PT) of generator
