Abstract：Because of the low current value in AC circuits where series arc fault happens, traditional circuit protecting devices could hardly detect the arc faults effectively. A novel arc fault identification method based on energy produced by wavelet transformation and neural network is proposed. Current samples of six different kinds of loads are collected by a self-made series arc generating and wave data acquisition device. These samples are decomposed by wavelet every 5-consecutive-cycle and the average value and standard deviation of high-frequency energy in each layer are obtained. With these data, a wavelet neural network is constructed to detect serial arc faults of different kinds of loads. Particle swarm optimization algorithm is applied to optimize the initial value of neural network and adaptive learning rate is used to improve the learning speed. The algorithm gives the definite YES or NO output with an acceptable training speed. The availability of the extracted characteristics in the input layer of the neural network is confirmed by mean impact value method. The recognition of the test samples shows nearly 95 percent accuracy rate.
张士文, 张峰, 王子骏, 顾昊英, 宁庆. 一种基于小波变换能量与神经网络结合的串联型故障电弧辨识方法[J]. 电工技术学报, 2014, 29(6): 290-295.
Zhang Shiwen , Zhang Feng , Wang Zijun , Gu Haoying , Ning Qing. Series Arc Fault Identification Method Based on Energy Produced by Wavelet Transformation and Neural Network. Transactions of China Electrotechnical Society, 2014, 29(6): 290-295.
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