Abstract
Arc faults in distribution lines are one of the main causes of electrical fires and need to be protected against them. In this paper, a series and parallel arc fault experimental platform is built regarding UL1699. The current waveforms of different arc faults are collected, and the current waveforms of some electrical equipment during normal operation are also collected. In this paper, the phase space reconstruction method is used to derive the phase space trajectory diagram of the current signals during arc fault and the normal operation of electrical equipment. The arc fault current feature quantity extraction algorithm is proposed based on fractal science, and the algorithm is implemented using Matlab software to extract the feature quantities of different arc faults and some electrical equipment's normal operation current signals. Simulation results show the effectiveness and feasibility of this method.
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