摘要
在线路电流差动保护中，向量差动动作判据获得了较为广泛的应用，但其动作性能并非令人满意。本文就负荷电流对这种判据产生的不利影响进行理论分析。
Phasor differential criterion has been widely used in line differential protection.But its operating performance is not satisfactory.This paper analyzes the affection of load current to operating performance of the criterion.The problem that load current causes sensitivity to be lowed(even not to trip)under internal fault conditions is mainly discussed.
出处
《继电器》
CSCD
1999年第1期14-16,共3页
Relay
关键词
负荷电流
电流差动保护
动作判据
线路保护
Load current Current differential protection Operating criterion Fundamental frequency phasor
