1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, No. 2 Beinong Road, Changping District, Beijing 102206, P. R. China
2. School of Control and Computer Engineer, North China Electric Power University, No. 2 Beinong Road, Changping District, Beijing 102206, P. R. China
3. State Key Laboratory of Photovoltaic Science and Technology, Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai 200433, P. R. China