1. School of Electronic and Information Engineering, Southwest University, Chongqing, P.R. China
2. department of engineering and smart grid, Commonwealth Edison Company(ComEd), Chicago, IL, USA
3. Department of Computer Information Systems, State University of New York at Buffalo, Buffalo, NY, USA
4. Center of Research on Microgrids in Aalborg University, Aalborg, Denmark
5. Chongqing Megalight Technology Co., Ltd, Chongqing, P.R. China