摘要
某厂用变电站在10kV变压器投运过程中多次发生上一级35kV变压器差动保护动作的现象,通过分析变压器励磁流通及和应涌流产生原因和特点,串联变压器和应涌流对电流互感器和差动保护的影响,采取调整差动保护定值和避免电流互感器饱和等方法,避免了串联变压器和应涌流对差动保护的误动作的影响。
The 35kV transformer differential factory substation operated, analysis of causes and protection acted when the l OkV transformer in A characteristics of transformer magnetizing current and inrush current,and influenced CT and the differential protective by Series-transformer sympathetic inrush. By adjusting the fixed value of differential protection and avoiding CT saturation, and avoid the effect of series-sympathetic inrush of transformer differential nroteetion
出处
《电气技术》
2012年第10期61-63,69,共4页
Electrical Engineering
关键词
串联
和应涌流
差动保护
饱和
series
sympathetic inrush
differential protection
saturation
