摘要
变压器发生区外故障后,在切断区外故障的瞬间,差动保护发生误动。从理论上分析差动保护误动的原因,并根据实际状况从硬件和软件方面提出解决的措施。保护人员在编制差动保护程序时,可以在软件方面提高差动保护区外故障保护的可靠性。
When the breaker switches off at transformer out - area fault,transformer differential protection may act improperly.This phenomenon is theoretically analyzed and the countermeasures in both HW and SW are proposed according to the actual conditions.The reliability of differential protection for out - area fault can be improved by software programming.
出处
《电力自动化设备》
EI
CSCD
北大核心
2004年第3期95-98,共4页
Electric Power Automation Equipment
关键词
变压器
区外故障
误动
可靠性
transformer
out - area fault
misoperation
reliability
