发变组保护与励磁系统限制及保护功能配合

Functional Coordination between the Protection of Generator-transformer Unit and Restricted of Excited System

发电机励磁系统在功能上配置了完善的励磁电流、发电机电压、发电机低励与过励等相关的限制及相应的保护单元,而发变组保护装置亦配置有发电机过电压、过激磁、失磁、励磁绕组过负荷等保护功能。对两者参数定值整定时,应根据机组的设备参数、运行方式及条件,优化整定励磁调节器与发变组保护装置的参数与定值,使两者紧密合理配合,保障机组的安全、稳定运行。

The generator excitation system is configured by the perfect related restrictions and protection units on the function of excitation current, generator voltage, low excitation generator and over excitation generator. Moreover, the generator transformer protection device is also equipped with generator over-voltage, over-excitation, excitation loss, and excitation winding overload protection function. So two parameters setting should base on equipments, operation mode and conditions of the generator. For ensuring safe and stable operating of the generator, the two parameters setting should base on equipment parameters, operation mode and conditions to optimize, the parameters and setting values of the excitation regulator and protection device of generator.