[1] State Grid Tianjin Elect Power Co, Comprehens Serv Ctr, Tianjin 300010, Peoples R China
[2] Tianjin Univ, Sch Elect & Informat Engn, Key Lab Smart Grid, Minist Educ, Tianjin, Peoples R China
[3] Tiangong Univ, Sch Elect Engn, Tianjin 300387, Peoples R China
[4] Key Lab Smart Energy & Informat Technol Tianjin Mu, Tianjin 300072, Peoples R China
[5] Tianjin Univ, Sch Elect & Informat Engn, Key Lab Smart Grid, Minist Educ, Tianjin 300072, Peoples R China
[6] Zhejiang Univ, Inst Marine Elect & Intelligent Syst, Ocean Coll, Zhoushan, Peoples R China