An Effective Detection Method of Serial Arc Fault on Low Voltage Power Circuits

摘要

For the safe use of electric power, it needs to detect the occurring of electric arc faults on the low voltage power circuits and switch off the power source before the occurring of fires. In the paper, it is to analyze the arc fault characteristics and to develop the detecting methods. The difference of current waveforms between arc fault conditions and normal operation conditions are studied by using the experimental results. Then detecting rules are developed to suppose detecting approaches. Finally, the experimental data with serial arc faults are used to test the detecting approaches and compare with the commercial devices. The purposed detecting methods can effectively detect the occurring of series arc faults, and the probability of malfunction is low.