1. Tianjin University,School of Electrical and Information Engineering,Tianjin,China
2. State Grid Jibei Electric Power Company Limited,Tangshan Power Supply Company,Tangshan,China
3. Université du Québec à Chicout,Department of Applied Sciences,Saguenay,Canada
4. State Grid Jibei Electric Power Company Limited,Chengde Power Supply Company,Chengde,China