Series arc fault online detection method and device
A series arc and detection method technology, which is applied in the direction of fault location, measuring device, and fault detection according to conductor type, can solve the problems of electromagnetic noise interference, fault false detection, low accuracy rate, etc., and achieve the effect of fast and accurate identification
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[0050]The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.
[0051]Such asfigure 1 As shown, the online detection method of series arc fault in this embodiment is as follows:
[0052]Step 1: Set a number for each motor load circuit in the underground working face of the mine, and collect the loop current and power supply of each load circuit under the two working conditions of normal operation and series arc fault when the motor load circuit is running. Voltage signal
[0053]The loop current and power supply voltage of each load line are collected by a Hall current sensor and a Hall voltage sensor, respectively.
[0054]Step 2: After the collected data is grouped, the nuclear principal component analysis method is used to analyze, and the power harmonics in the loop curr...
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