1. Research Institute for Rural Electrification, Ministry of Water Resources, Hangzhou 310012, China
2. College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310032, China
3. Institute of Science and Development, Chinese Academy of Sciences, Beijing 100190, China
4. International Center on Small Hydropower, Hangzhou 310002, China
5. China Institute of Water Resources and Hydropower Research, Beijing 100038, China