摘要
通过对L90电流光纤差动保护的动作原理及保护动作时序的分析,指出L90在判别非全相故障的原理上存在缺陷,结合现场实际情况提出了保护改造方案。
By analyzing the action principle and cycle time of L90 current optical fiber differential protection,it points out that L90 has limitation in principle of incomplete phase fault diagnosis in this paper. In the end,the L90 relay＇ s improvement scheme is given according to the actual condition.
出处
《湖北电力》
2009年第2期37-39,共3页
Hubei Electric Power
关键词
非全相再故障
差动保护
误动
incomplete phase fault
differential protection
maloperation
