1. Department of Electrical Engineering, North China Electric Power University, Baoding, China
2. Department of Mathematics and Physics, North China Electric Power University, Baoding, China
3. College of Smart Energy, Shanghai Jiao Tong University, Shanghai, China
4. State Grid Anhui Electric Power Company, Bengbu Power Supply Company, Bengbu, China
5. Department of Electrical and Computer Engineering, The George Washington University, Washington, DC, USA
6. Center of Excellence in Power System Management and Control, Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
7. Institute for Systems and Computer Engineering, Technology and Science, Faculty of Engineering of the University of Porto, Porto, Portugal