Detection discrimination method of arc light fault
A discrimination method and arc light technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of slow fault detection, reduced reliability, monitoring dead zone, etc., to achieve fast and reliable transmission, improve reliability, Guaranteed fast results
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[0037] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.
[0038] The invention provides a method for detecting and judging an arc fault, comprising the following steps:
[0039] (1) Install a passive passive light sensor based on the photometric cosine principle in the switchgear cabinet to be monitored to monitor and detect the arc light within a 180-degree full field of view directly in front of the light sensor. Identify and obtain the arc light signal, and realize the band-pass filtering of the arc light signal;
[0040] (2) The analog arc light signal obtained in step (1) is transmitted to the protection device through a large core diameter plastic optical fiber or a large numerical aperture quartz multimode optical fiber, so as to improve the anti-interference ability during the signal transmission process;
[0041] (3) The protection device receives the analog optical signal of each optical ...
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