Identification and extraction method for power transmission line discharge pulse

The invention provides an identification and extraction method for power transmission line discharge pulse and belongs to the technical field of intelligent power grids. The method comprises a steps of acquiring partial waveforms corresponding to a preset monitoring time window output by a monitoring circuit in real time and processing to obtain corresponding waveform array, waveform average valueand waveform standard deviation, a step of processing the waveform array to remove invalid pulse points to obtain an effective waveform array corresponding to effective pulse points, a step of sequentially intercepting the effective waveform array by taking a point which is not zero as a starting point and taking a preset time period as a unit, forming a stack by all points which are not zero ineach preset time period, and processing to obtain a corresponding time weight, and a step of and processing all time weights to judge whether the partial waveforms have periodicity or not. The methodhas the advantages that whe