摘要
介绍一起微机保护装置因为交流三相失压造成保护误动的事故,着重分析该型号微机保护不对称和对称电压互感器(TV)断线告警的判据、距离保护出口动作跳闸的条件、事故案例中保护装置的动作过程,最后提出了防止这一类型事故再次发生的对策。
This paper introduces a misoperation of microcomputer protection caused by no-voltage, focuses on the alarm criterion of potential circuit open, the trip condition of distance protection and the protection action process of the accident case. And according to the analysis, measures are presented to prevent the recurrence of such accident.
出处
《江苏电机工程》
2009年第4期36-38,共3页
Jiangsu Electrical Engineering
关键词
失压
保护
误动
分析
no-voltage
protection
misoperation
analysis
