[1] State Grid Liaoning Elect Power Res Inst, Shenyang, Liaoning, Peoples R China
[2] Northestern Univ, Shenyang, Liaoning, Peoples R China
[3] Shanghai Jiao Tong Univ, Shanghai, Peoples R China
[4] Panjin Power Supply Co, State Grid Liaoning Elect Power Co Ltd, Panjin, Liaoning, Peoples R China