Fault arc detection method and device, computer device and computer readable storage medium

Abstract

The invention provides a fault arc detection method and device, a computer device and a computer readable storage medium. The method comprises the steps of acquiring a detection current signal; sampling the detection current signal at a preset sampling frequency to obtain current sampling signals; carrying out flat shoulder judgment according to the current sampling signals of a plurality of half-wave periods in the detection current signal, and performing statistics on the number of flat shoulders with the half-wave periods; and when the number of the flat shoulders exceeds a first preset number in a preset duration, sending out a fault arc protection signal. The device provides an execution module for the method. The computer device is provided with a processor; when the processor executes a program, the fault arc detection method can be realized. The computer program is stored in the computer readable storage medium and used for realizing the fault arc detection method. The occurrence of pure resistive load fault arc can be rapidly and effectively judged, and a circuit can be effectively protected.

Description

technical field [0001] The invention relates to the technical field of circuit arc detection, in particular, to a fault arc detection method, and also to a fault arc detection device applying the method. It also relates to a computer device for implementing the above method, and also relates to a computer readable storage medium capable of implementing the above method. Background technique [0002] With the development of society, the use of electrical appliances is becoming more and more extensive. Electrical circuits or equipment may cause arc faults in electrical circuits or equipment due to aging, damage or poor connection of electrical wire insulation, resulting in fires. In low-voltage power supply and distribution lines, there are three types of arc faults: series, line-to-line, and line-to-ground. The series arc is more dangerous because the current is smaller than the other two types of arcs when the arc fault occurs, and the characteristics of the fault arc are ...

AI Technical Summary

Problems solved by technology

Series arcs are more dangerous due to the fact that when an arc fault occurs, the current is smaller than that of the other two types of arcs, and the characteristics of the fault arc are more difficult to detect depending on the load type and load size.

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