[1] Ehv Power Transmission Company of China Southern Power Grid Co., Ltd, The First Department of Power Transformation Management Guangzhou Bureau, Guangzhou, China
[2] Maintenance & Test Center, Ehv Power Transmission Company of China Southern Power Grid Co., Ltd, Department of High Voltage Technology, Guangzhou, China
[3] Ehv Power Transmission Company of China Southern Power Grid Co., Ltd, The Second Department of Power Transformation Management Guangzhou Bureau, Guangzhou, China