桥开关CT极性接反引起变压器差动保护误动分析  

The Analysis on Transformer Differential Protection mal Operation Caused by Gapping Switch CT Polarity Reversed Connection

作　　者：刘同和[1] 冯景稳 李强[3] 

机构地区：[1]濮阳供电公司,河南濮阳457000 [2]濮阳龙丰热电有限责任公司,河南濮阳457000 [3]河南电力试验研究院,河南郑州450052

出　　处：《河南电力》2012年第2期36-38,共3页Henan Electric Power

摘　　要：结合一起主变跳闸事故,详细分析了主变差动保护在桥式接线时的CT二次接线原则和差动保护原理,并对类似的多种危险情况提出了防范措施。According to an accident of false transformer tripping,this paper analyzed in detail the CT secondary wiring principle and the differential protection theory when the main transformer differential protection is in bridge connection.This paper also gave some precautionary measures for other similar dangerous conditions.

关 键 词：差动保护 桥式接线 二次回路 

分 类 号：TM407[电气工程—电器]