Generator set partial discharge periodic pulse interference suppression method, system and device and storage medium

Abstract

The invention discloses a generator set partial discharge periodic pulse interference suppression method, system and device and a storage medium. The method comprises the following steps: acquiring a periodic pulse current signal of a high-voltage bus side of a generator set; counting the phase distribution law and amplitude characteristics of the periodic pulse interference signal, and taking the periodic pulse interference signal as a reference signal; based on a phase distribution rule, pulse current signals at all fixed phases are extracted as to-be-processed signals; sequentially comparing the energy, the spectrum similarity coefficient and the energy ratio in the high-frequency domain and the low-frequency domain of the to-be-processed signal and the reference signal, and judging whether the to-be-processed signal is a partial discharge signal or not according to the similarity; other interference signals in the pulse current signals are removed, and only partial discharge signals are reserved; and missing of partial discharge signals can be effectively avoided, and important support is provided for insulation state detection and diagnosis of the generator set.

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