浅谈“线路保护异常”光字牌原因及处理

Discussion of Reasons and Resolutions for System Signaling 'Unusual Response from Grid Protection' in Huojia 220kV Substatio

通过对河南省电力公司新乡供电公司500kV获嘉变电站220 kV对"线路保护异常"光字牌信号报出的原因分析,明确报出该光字牌的意义以及如何检查处理。

This article analyses the reasons for system signaling ＇Unusual Response from Grid Protection＇ through the investigation of HuoJia 220 kV Substation.It illustrates the implication of the system signaling and provides the methods of checking mechanism as well as the proposed resolutions.