Abstract:

Abstract:The reactive power of generator No.1 of Guangdong Yudean Yunhe Power Generation Company Limited fluctuated abnormally multiple times. The factors leading the reactive power of the generator to fluctuate were pointed out. According to analysis, it was decided finally that the main reason of the reactive power fluctuation of the generator No.1 is transient fault of the excitation voltage transformer of the generator excitation system. The excitation voltage transformer of the generator No.1 had been replaced, and the fault of reactive power fluctuation was eliminated.

Key words: Key words:reactive power, fluctuation, excitation adjusting device, excitation voltage transformer