1. Shaanxi Key Laboratory of Smart GridXi'an Jiaotong UniversityXi'anPeople's Republic of China
2. State Key Laboratory of Electrical Insulation and Power EquipmentXi'an Jiaotong UniversityXi'anPeople's Republic of China
3. School of Electrical EngineeringXi'an Jiaotong UniversityXi'anPeople's Republic of China
4. Department of Electrical Power EngineeringWroclaw University of TechnologyWroclawPoland
5. School of Electrical and Electronic EngineeringUniversity of ManchesterManchesterUK