摘要
根据大型电动机差动保护在电机启动中动作的现象进行分析,指出了中性点CT饱和、引起CT二次电流发生畸变是造成差动保护动作的原因,并提出了解决该问题的几种办法。
The phenomenon of current differential protection acting in large-scale electromotor start period is analyzed, and the distortion of CT secondary current caused by CT saturation is the differential protection movement reason, and several methods to solve the problem are proposed.
出处
《山西电力》
2007年第6期5-7,共3页
Shanxi Electric Power
关键词
电流互感器
二次电流
差动保护
中性点
畸变
饱和
current transformer
secondary current
differential protection
neutral point
distortion
saturation
