1. Key Laboratory of Smart Grid of Ministry of Education and the Key Laboratory of Smart Energy and Information Technology of Tianjin Municipality, Tianjin University, Tianjin, China
2. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
3. Department of Electrical Engineering, Federal Center for Technological Education of Minas Gerais, Belo Horizonte, Brazil
4. Aalborg University, Aalborg, Denmark