摘要
由于励磁涌流的多变性和不确定性,给基本故障的识别造成困难,因而出现保护误动。为此对两次励磁涌流引起的变压器差动保护误动作进行总结分析,阐述其危害和相应对策,以备同行借鉴,减少或避免类似事故的发生。
Polytrope and uncertainty of exciting surge make it difficult to identify from faults which result in malfunction of protection.In this paper,two times malfunction of transformer differential protection aroused by exciting surge were analyzed.The hazard and corresponding countermeasure were also proposed.
出处
《华北电力技术》
CAS
2007年第3期51-54,共4页
North China Electric Power
关键词
励磁涌流
变压器差动保护
二次谐波制动
励磁涌流抑制器
exciting surge
transformer differential protection
secondary harmonic brake
exciting surge limiter
