1. College of Electrical and Information Engineering, Hunan University, Changsha, China
2. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
3. Electric Power Research Institute of China Southern Power Grid, Guangzhou, China
4. State Grid Hunan Electric Power Co. LTD, Changsha, China
5. State Grid Integrated Energy Services Group Co. LTD, Changsha, China
6. Galvin Center for Electricity Innovation, Illinois Institute of Technology, Chicago, IL, USA