Method and device for constructing pulse current waveform half-peak time width-phase spectrum

Abstract

The invention relates to a pulse current waveform half-peak timewidth-phase spectrum construction method and device; the method comprises the steps of setting acquisition parameters; using the acquisition parameters to acquire a local discharge pulse current waveform-time sequence based on ultra-wideband detection technology; extracting half-peak timewidth from local discharge pulse current waveform, and acquiring a half-peak timewidth-time sequence; converting the half-peak timewidth-time sequence into a half-peak timewidth- phase sequence, and displaying half-peak timewidth-phase sequence spectrum. Compared with the prior art, the pulse current waveform half-peak timewidth-phase spectrum construction method and device have the advantages such as good simplicity and practicality, and capability to acquire richer local discharge information.

Description

technical field [0001] The invention relates to partial discharge information processing technology, in particular to a method and device for constructing pulse current waveform half-peak time width-phase spectrum. Background technique [0002] When performing partial discharge detection on electrical equipment insulation (oil-paper insulation, gas insulation, etc.), it is assumed that under the ideal noise rejection technology, the detection based on the peak value of partial discharge pulse-time (phase) sequence is more effective when there are multiple partial discharge sources (including Two), the partial discharge data acquired by the system will be a random aliased peak-phase sequence (PRPD). The partial discharge source existing inside the electrical equipment insulation is unknown, but under the stable working conditions of the partial discharge source, the transmission path formed by the detection system is determined. The pulse current time-domain waveforms formed...

AI Technical Summary

Problems solved by technology

The pulse current time-domain waveforms formed by different discharge sources or signal interference sources on the detection system loop are quite different, but they cannot be distinguished only by the amplitude

That is to say, the widely used traditional PRPD spectrum is not enough to show more useful information, nor can it be used to deal with the working conditions of multiple partial discharge sources or random pulse interference sources

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