摘要
介绍一起在110 kV主变差动保护接线组别整定错误的情况下,因10 kV线路故障导致穿越电流增大而引起110 kV主变差动保护误动作的实例,分析了误动作、误整定、带负荷试验未发现误整定的原因,并提出改进措施,以便实际工作中加以防范。
A practical example of an 1 lOkV main transformer differential protection malfunction caused by the increase through currents in lOkV line fault with error setting of wiring group is introduced in this paper. The reason of disoperation and error setting is analyzed. Improvement method is put forward in order to prevent such situation in practical work.
出处
《江苏电机工程》
2013年第1期13-14,17,共3页
Jiangsu Electrical Engineering
关键词
差动保护
接线组别
误整定
误动作
differential protection
wiring group
error setting
malfunction
