1. School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China
2. Hubei Key Laboratory Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China
3. Substation Intelligent Operation and Maintenance Experimental Laboratory, State Grid Hunan Ultra High Voltage Substation Company, Changsha 420100, China
4. School of Electrical Engineering, Changsha University of Science and Technology, Changsha 410114, China