1. Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310023, China
2. Zhejiang Light Industrial Products Inspection and Research Institute, Hangzhou 310018, China
3. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
4. Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China