摘要
介绍一起发电机进相运行引起失磁保护误动作的事故,分析了励磁系统低励限制未动作和失磁保护误动作的原因,提出将低励限制、失磁保护和发电机静稳圆3条曲线绘制在PQ坐标系上进行对比分析的方法。该方法可以有效减少失磁保护误动作的几率,有利于提高发电机安全稳定运行水平。
Error acting of excitation loss protection during generator leading phase operation is introduced.The reason of low excitation limit non-operation excitation loss protection mis-operation is analyzed.The method is taken up to prevent excitation loss protection from acting,which can enhance the standard of safety and steady operation in power system.
出处
《陕西电力》
2011年第4期82-84,共3页
Shanxi Electric Power
关键词
发电机
进相运行
失磁保护
低励限制
配合整定
generator
leading phase operation
excitation loss protection
limit of low excitation
adapting set
