1. Electric Power Research Institute, State Grid Jiangsu Electric Power Company Ltd., Nanjing, China
2. Department of Electrical Engineering, Northeast Electric Power University, Jilin, China
3. Agency for Science, Technology and Research, Nanyang Technological University, Jurong West, Singapore
4. Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, China
5. Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN, USA