王尧,田明,谢振华,班云升,侯林明,李奎.基于电流相似度与高频能量的串联故障电弧检测方法[J].电测与仪表,2022,59(6):158-165. Wang Yao,Tian Ming,Xie Zhenhua,Ban Yunsheng,Hou Linming,Li Kui.Series arc fault diagnosis method based on current similarity and high-frequency energy[J].Electrical Measurement & Instrumentation,2022,59(6):158-165.
基于电流相似度与高频能量的串联故障电弧检测方法
Series arc fault diagnosis method based on current similarity and high-frequency energy
Arc fault is an important cause of the electrical fire, aiming at the malfunction and rejection of fault arc protection algorithm under nonlinear load conditions, a series arc fault detection method based on current similarity and high-frequency energy is proposed. Refer to the standard, building an arc fault experimental platform and conducting experiments. Analyze the arc current characteristics from the perspective of time domain and frequency domain. The wavelet function is used to preprocess the current signal, and the characteristic quantities of low and high frequencies are selected. The arc fault characteristic quantity threshold is set, and the arc fault identification algorithm is proposed on this basis. Experimental results show that the algorithm can accurately identify the arc fault under various load conditions, and there is no malfunction and rejection action.
