发电机保护G60逻辑设计问题分析和改进

Analysis and improvement on logic design of G60 generator protection

珠海金湾发电有限公司自2007年~#3,~#4机组投产以来,GE发电机变压器组保护变更比较多,对发电机保护G60在500 kV开关断开全停保护、CT断线、失磁保护和录波启动等,二次回路接线及逻辑设计方面存在的问题进行分析和改进,使发电机保护功能更加完善,保证了安全生产。

There are many protection changes on GE generators since~#3 and ~#4 units of Zhuhai Jinwan Power Company Limited got into operation in 2007. G60 protection on generators includes 500 kV switches full stop protection,CT disconnection,loss of excitation protection and wave recording startup. The problems of secondary circuit wiring and logic design are analyzed and improved to optimize the protection function of generator,which guarantees safe production.