1. State Grid Zhengzhou Electric Power Supply CompanyZhengzhouPeople's Republic of China
2. Eaton CorporationWatertownWIUSA
3. School of Electrical EngineeringShanghai University of Electric PowerShanghaiPeople's Republic of China
4. Engineering Technology DepartmentThe State University College at BuffaloBuffaloNYUSA
5. School of Electrical EngineeringShandong UniversityJinanPeople's Republic of China