1. School of Control and Computer Engineering, North China Electric Power University, Beijing, China
2. School of Electrical Engineering and Automation, Harbin Institute of Technology, Heilongjiang, China
3. Postdoctoral Research Station of Electrical Engineering, Harbin Institute of Technology, Heilongjiang, China
4. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China
5. School of Energy Science and Engineering, Harbin Institute of Technology, Heilongjiang, China