一起距离保护动作分析

Analysis on a Distance Protection Action

以一起110k V距离保护动作为例,判断了该保护装置是否为误动作,并分析了引起距离保护I段出口延时动作的原因,说明了在某些系统故障的分析中不能忽视测量阻抗以及保护逻辑判断识别过程,否则将会得出错误的结论。

This article takes an 1 lOkV distance protection action as an example to judge whether it is malfunction of the device. The causes of distance protection I section exit deferred action are analyzed. It indicates that the impedance measurement and protection logic judgment recognition process shouldn＇t be ignored in some system fault analysis, or wrong conclusion will be got.