Electrical Insulation Research Center Institute of Materials Science Electrical and Computer Engineering University of Connecticut Storrs CT 06269 USA;
Beijing Area Major Laboratory of High Voltage and Electromagnetic Compatibility North China Electric Power University Beijing 102206 China;
State Key Laboratory of Power Systems Department of Electrical Engineering Tsinghua University Beijing 100084 China;
School of Mechanical and Manufacturing Engineering University of New South Wales Sydney NSW 2052 Australia;
Electric Power Research Institute Yunnan Electric Power Grid Co. ltd. Kunming Yunnan 650217 China;
Department of Electrical Electronic and Information Engineering "Guglielmo Marconi" University of Bologna Viale Risorgimento 2 Bologna 40136 Italy;
China Electric Power Research Institute Beijing 100192 China;
Shanxi Key Laboratory of Mining Electrical Equipment and Intelligent Control National and Provincial Joint Engineering Taiyuan University of Technology Taiyuan 030024 China;
Key Laboratory of Smart Grid of Education Ministry School of Electrical and Information Engineering Tianjin University Tianjin 300072 China;
