1. Key Laboratory of Smart Grid of Ministry of Education and the Key Laboratory of Smart Energy & Information Technology of Tianjin Municipality, Tianjin University, Tianjin, China
2. Department of Electrical Engineering, Southwest Jiaotong University, Chengdu, China
3. Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, China
4. School of Electrical and Electronic Engineering, Nanyang Technology University, Singapore, Singapore
5. Department of Energy Technology, Aalborg University, Aalborg, Denmark