1000MW发电机保护定值与励磁调节器参数的匹配

Matching of Excitation Regulator Parameter and Protection Setting Value in 1 000 MW Generator

为提高1000MW发电机组运行的可靠性和稳定性,防止励磁系统出现异常而导致发电机保护误动作,通过工程实例分析了发电机失励磁保护定值与励磁调节器欠励磁限制参数之间的匹配、发电机过励磁保护定值与励磁调节器电压/频率限制参数之间的匹配、发电机定子过电流保护与励磁调节器定子电流限制之间的匹配。

In order to improve the operation reliability and stability of 1 000 MW generators,as well as prevent the excitation system from the abnormal away,which may lead to the wrong tripping operation of generator protection,the matching between the setting value of generator＇s field loss protection and the limiter parameters of low excitation in excitation regulator,the matching between the setting value of generator＇s over excitation protection and the limit parameters of voltage/frequency in excitation regulator,as well as the matching between the over current protection of generator stator and the limit parameters of stator current in excitation regulator are analyzed in this paper,on the basis of engineering examples.