1. State Key Laboratory of Reliability Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin, China
2. State Grid Shandong Electric Power Company Dezhou Power Supply Company, Dezhou, China
3. Zhejiang Testing and Institute for Mechanical and Electrical Products Quality Company, Ltd, Hangzhou, China
4. College of Information Engineering, Beijing Institute of Petrochemical Technology, Beijing, China
5. College of Electrical Engineering, Zhejiang University, Hangzhou, China