发电机励磁限制与相应机组保护的配合

The Cooperation Between Excitation Limitation and Corresponding Protector of Generator

发电机的励磁限制和相应的保护功能是与电网安全密切关联的重要环节。讨论了发电机低励限制功能与失磁保护的配合，给出了过励限制特性与机组保护配合关系的核算方法，并有核算实例。建议由电网方面，对于发电机进相允许值、失磁保护阻抗特性与低励限制整定参数三者之间的配合关系。

The excitation limitation and corresponding protector are very important as to ensure the safety of a power grid. The cooperation between low excitation limitation and field loss protector is discussed in this paper while a method of back-check for the cooperation between over excitation characteristics and unit protector is given with an example. It is proposed that clear technical demands and measures should be put forward by the grid manager as to deal with the cooperation among the allowed leading reactive power of generator, impedance characteristics of field loss protector and settings of low excitation limitation.