几起高频保护故障和拒动分析  

Several high frequency protection failures and the analysis of refuse operation

作　　者：吴建辉 郑新才 孙军鹏 

机构地区：[1]商丘供电公司,河南商丘476000

出　　处：《电力系统保护与控制》2009年第21期144-146,共3页Power System Protection and Control

摘　　要：列举了两起因施工工艺引起的高频保护故障事件,一起因定值整定引起的高频保护拒动事故,一起因故障录波器屏产生串扰信号引起的高频保护拒动事故。通过对几起高频保护异常情况的分析,指出高频保护二次回路和定值整定中存在的问题。针对此类问题提出了一些防范措施。In this paper, two accidents of high frequency protection failures caused by construction technics are enumerated. One is the high frequency protection refuse operation accidents resulted from the setting value. The other is caused by the crosstalk signal induced by the fault recorder screen. By the analysis of the several abnormal conditions of the high frequency protection, the problems existing in the secondary circuit of the high frequency protection and the setting value are pointed out and the some preventive measures for such problems are put forward.

关 键 词：高频保护 故障 拒动 

分 类 号：TM77[电气工程—电力系统及自动化]