1. Shanghai Key Laboratory of Power Station Automation Technology, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China
2. School of Electronic and Electrical Engineering, University of Leeds, Leeds, U.K.
3. State Grid Jiangsu Electric Power Research Institute, Nanjing, China
4. School of Mechatronics, Computer Science, and Engineering, City, University of London, London, U.K.