一起负序保护误动分析  

An Erroneous Action Analysis of Negative Sequence Relay

作　　者：刘峰[1] 刘健[1] 陈波[1] 兰莉红[2] 

机构地区：[1]陕西省电力公司,陕西西安710004 [2]陕西电力科学研究院,陕西西安710054

出　　处：《陕西电力》2006年第5期27-29,共3页Shanxi Electric Power

摘　　要：根据一起负序保护在线路非全相时的误动情况,对保护动作时的采样数据进行了计算和分析,指出造成保护误动的原因为负序电流定值过小,没有躲过非全相时的负荷电流;装置“单跳起动重合闸”开入量未接,且“不对应起动重合闸”开入延时过长,最后提出了解决问题的方案。Based on one erroneous action of negative sequence relay running on non-all-phase transmission line, calculation and analysis are conducted to the sampling data of relay. It is indicated that the reasons of erroneous action are as following: the less fixed negative sequence value, non warding off the load current when non-all-phase running, without switching in single phase trip start reclose, too long delay of non-corresponding start reclose. The solutions are put forward at last.

关 键 词：非全相 负序 保护 分析 

分 类 号：TM774[电气工程—电力系统及自动化]