基于发电机功率变化量的失磁保护辅助加速判据

介绍了发电机失磁保护的4种主判据，针对阻抗Ⅱ段和低电压判据延时较长的不足，提出利用发电机功率变化量作为失磁保护辅助加速判据，并介绍了实际微机保护装置的动模试验情况。

An Auxiliary Accelerated Judgment Method for Loss of Excitation Protection Based on Generator Power Variation

This paper describes four main judgment methods for the generator loss of excitation protection.Owing to too long a delay time of the impedance second zone judgment and the under-voltage judgment,an auxiliary accelerated judgment method is proposed for the loss of excitation protection based on the generator power variation.Finally,the dynamic model test on a real digital protective relay is discussed.