1. School of Information and Electrical Engineering, China Agricultural University, Beijing, China
2. School of Electrical Engineering, Xi’an University of Technology, Xi’an, China
3. School of Electrical Engineering, Xi’an Jiaotong University, Xi’an, China
4. College of Information and Electrical Engineering, China Agricultural University, Beijing, China
5. Anshun Power Supply Bureau, Guizhou Power Grid Company, Ltd, Anshun, China
6. Jiangxi Electric Power Research Institute of State Grid, Nanchang, China
7. School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo, China