摘要
分别阐述了双母线微机保护中母联带单CT和双CT时,发生母线故障和死区故障时的保护逻辑,同时指出它们各自的优缺点。针对现有的母联双CT交叉接线方式,提出一种能够正确判别是母线故障还是死区故障的方法,同时对母联死区故障的保护原理提出一种改进措施。
This paper describes differential protection＇s logic on busbar or dead-zone fault when coupler has one or two TAs, as well as their advantages and limitations. Aiming at present across connective mode of the coupler with two TAs, a scheme that can rightly judge busbar or dead-zone fault is presented and an improved method on protection principle of dead-zone fault is proposed.
出处
《继电器》
CSCD
北大核心
2006年第10期12-14,共3页
Relay
关键词
双母线
母联
母线故障
死区故障
duplicate busbar
coupler
busbar fault
dead-zone fault
