1. Electric Power Research Institute Guangdong Power Grid Co.,Ltd,Guangdong Provincial Key Laboratory of Electric Power Equipment Reliability,Guangzhou,China,510080
2. Electrical Power Research Institute,China Southern Power Grid (CSG),Guangzhou,China,510663
3. Guangdong Power Grid Co., Ltd,Foshan Power Supply Bureau, Foshan, Guangdong,Foshan,China,528200