1. Department of Electrical Engineering, City University of Hong Kong, Hong Kong SAR, China
2. Hubei Key Laboratory of Power Equipment and System Security for Integrated Energy, School of Electrical Engineering and Automation, Wuhan University, Wuhan, China
3. Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
4. School of Engineering, University of Leicester, Leicester, U.K.
5. Laboratory of Engineering for Energy and Environmental Sustainability, Universidad de Sevilla, Sevilla, Spain
6. Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada