Multi-load loop series fault arc detection method and device and storage medium

Abstract

The invention discloses a multi-load loop series fault arc detection method and device and a storage medium. The multi-load loop series fault arc detection method comprises the following steps: collecting a main circuit current signal in a multi-load loop; carrying out wavelet transformation on a branch circuit current signal to obtain a wavelet coefficient; processing the wavelet coefficient to obtain at least two fault indication features, wherein the fault indication feature meets the following conditions: when a fault arc is generated, the fault indication feature is not interfered by a non-fault branch, and can be used for judging whether the fault branch has a fault; and if the at least two fault indication features meet a preset judgment condition, judging that a fault arc occurs inthe multi-load loop. The objective of the invention is to solve the problem that only fault arcs in a single load loop can be detected but fault arc detection cannot be performed on multiple load loops in the prior art.

Description

technical field [0001] The invention relates to the field of arc detection, in particular to a multi-load circuit series fault arc detection method, device and storage medium. Background technique [0002] Arcing is a luminous discharge through an insulating medium, usually accompanied by partial volatilization of electrodes, while an arc fault is "an unintentional arcing condition in an electrical circuit". The center temperature of the arc is as high as 5000K to 15000K, which is very likely to cause a fire if there are combustible materials around it. [0003] In the power distribution systems of family residences, office buildings, large shopping malls, etc., due to aging wires and poor contact, etc., series fault arcs often occur, which in turn cause electrical fires and bring incalculable losses to users. At present, most researches on series fault arcs focus on a certain single load circuit. However, in a real power network, the lines are very complex and the loads a...

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Problems solved by technology

[0005] The embodiment of the present application provides a multi-load circuit series fault arc detection method, device and storage medium, aiming to solve the problem that the prior art can only detect the fault arc in a single load circuit, but cannot perform fault arc detection on multiple load circuits The problem

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