Maintenance method of low-voltage power cable line operation fault
Due to the poor time delay of the traditional maintenance method,and the fluctuation of the line voltage after the maintenance,the effect of the line fault maintenance is not good,the maintenance method of low-voltage power cable line operation fault is proposed.Use the traveling wave detector to collect the traveling wave signal of the cable line,use the wavelet threshold denoising method to filter the signal,diagnose whether there is a fault in the line according to the similarity between the traveling wave signal and the reference model,locate the fault location according to the traveling wave propagation time and speed,use the fault tree to obtain the corresponding fault maintenance plan,and repair the line.The experiment proves that the design method has a short delay time,and the line voltage quickly recovers to a stable state after maintenance,which has a good fault maintenance effect.
low-voltage power cable linetroubleshootingtraveling wavewavelet threshold de-noising methodfault tree
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