本装置采用的判据是反应转子电压变化量，与传统的转子判据不同。
The response of the rotor voltage variation is taken as the criterion which is different from the conventionally used ones.
介绍了5号发电机的主要设计规范及其励磁系统组成，分析了如何处理5号发电机在运行过程中出现的转子电压摆动的异常现象。
5 generator rotor and the composition of its excitation system, analyzes how to treat the abnormal phenomena of rotor voltage swing appearing in the running process of no.
通过对定子电压方程做有条件的简化，得到一种转子磁通观测算法。
Through simplification of stator's voltage equation, a method for observing the flux of rator is obtained.
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