一起励磁系统过励限制引起的机组跳闸事件分析

Analysis of Generator Tripping Caused by Excitation System Over Excitation Limit

本文分析了一起EX2100励磁系统过励限制及保护动态校核过程中出现的机组跳闸事件,得出了事故原因为过励限制动作时进行了错误的增磁操作,由于两套控制器参数不一致导致了励磁系统跳闸,最后对励磁系统动态校核试验提出了建议。

This paper analyzed the generator tripping event during excitation limit and protection dynamic checking process of EX2100 excitation systems, and obtained the cause of the accident was the wrong increasing magnetic operation when over excitation limit action. Because the two sets of controller parameters inconsistent resulted in the excitation system trip. This paper gave some suggestions for excitation system dynamic checking test.