1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin China
2. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology Tianjin China
3. School of Electric Power South China University of Technology Guangzhou China
4. High Voltage Institute China Electric Power Research Institute Beijing China
5. Simpson Querrey Institute Northwestern University Evanston Illinois USA
6. HVDC Transmission Technology Department Globe Energy Interconnection Research Institute Beijing China
7. Electric Power Research Institute China Southern Power Grid Guangzhou China
8. High Voltage Institute Yunnan Institute of Electrical Science Yunnan China
9. Institute of Material Science University of Connecticut Storrs Connecticut USA