[1] Sichuan Univ, Coll Elect Engn & Informat Technol, Chengdu 610065, Sichuan, Peoples R China
[2] Univ Bath, Dept Elect & Elect Engn, Bath BA2 7AY, Avon, England
[3] Cranfield Univ, Sch Water Energy & Environm, Energy & Power Theme, Cranfield MK43 0AL, Beds, England
[4] Michigan State Univ, Dept Elect & Comp Engn, E Lansing, MI 48824 USA
[5] State Grid Fujian Elect Power Res Inst, Fuzhou 350007, Fujian, Peoples R China
[6] State Grid Xiamen Power Supply Co, Xiamen 361008, Fujian, Peoples R China