[1]State Grid Weihai Power Supply Company, Weihai 264200, Shandong, China;
[2]School of Computer Science and Technology, Shandong University, Jinan 250100, Shandong, China;
[3]Weihai No. 1 Middle School, Weihai 264200, Shandong, China;
[1]State Grid Weihai Power Supply Company, Weihai 264200, Shandong, China;
[1]State Grid Weihai Power Supply Company, Weihai 264200, Shandong, China;
[1]State Grid Weihai Power Supply Company, Weihai 264200, Shandong, China;
In-service; time; detection; Feature; extraction; Match; weightSemi-supervised; k-NNM; identification; module;