Fault Line Selection Method for Resonant Grounding System Using Waveform Time Domain Feature Clustering
A technology of resonance grounding and line selection method, applied in the direction of fault location and so on
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[0068] When a single-phase grounding fault occurs in a resonant grounding system, the similarity between the transient zero sequence current waveforms between the non-faulty lines after the fault is greater than the similarity between the faulted line and the non-faulted line. The present invention is based on the transient zero sequence current waveforms after the fault Based on the principle of similarity, a new method for single-phase grounding fault line selection in resonant grounding system using waveform time domain feature clustering is proposed.
[0069] The present invention uses the waveform time domain feature clustering method for resonant grounding system fault line selection, such as Picture 12 As shown, including the following steps:
[0070] Step 1: Decompose the half-cycle transient zero-sequence current waveform of each line after the single-phase grounding fault of the resonant grounding system by histogram to obtain a histogram reflecting the time-domain distri...
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