Series fault arc detection method and system, equipment and storage medium

Abstract

The invention discloses a series fault arc detection method and system, equipment and a storage medium. The detection method is characterized by, firstly obtaining a sampling sequence of each power frequency period, carrying out standardization processing, calculating a plurality of characteristic quantities of the sequence data of each power frequency period, and describing the AC current waveform by employing the plurality of characteristic quantities, so that the characteristics of the current data are well reflected from multiple dimensions, and the detection accuracy is improved; and then, setting a sliding detection window, wherein the length of the sliding detection window is N power frequency periods, making the sliding detection window slide on a characteristic quantity sequence formed by the multiple power frequency periods, and judging the series fault arc based on a distance calculation result between two sets of characteristic value data before and after window sliding. The overall detection and recognition algorithm is realized based on the distance calculation result of the two feature matrixes, and feature quantity comparison after current data decomposition is not needed, so that the algorithm is relatively simple, and the requirement for the performance of an embedded system is not too high.

Description

technical field [0001] The invention relates to the technical field of electricity safety detection, in particular, to a detection method, system, equipment, and computer-readable storage medium for series fault arcs. Background technique [0002] With the rapid development of science and technology in our country, the density of residents in the city is also increasing day by day, resulting in an increase in the density of household appliances in the region year by year, which makes the proportion of electrical fires to the total fires increase year by year, of which electrical fires caused by arc faults account for a large portion. Series fault arc is a kind of fault arc caused by poor contact at the electrical connection point of the line, the break of a single wire in the insulation layer, etc. Since the arc is a kind of plasma, it is equivalent to a dynamic resistance with a small resistance value. When the fault arc exists in the line in the form of series, the arc cu...

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Problems solved by technology

[0004] The invention provides a detection method, system, equipment, and computer-readable storage medium for a series fault arc detection method, so as to solve the technical problems that the existing series fault arc detection algorithm is relatively complicated and the detection accuracy is poor

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