1. Guangxi Power Transmission and Distribution Network Lightning Protection Engineering Technology Research Center and the School of Electrical Engineering, Guangxi University, Nanning, China
2. State Grid Chengdu Power Supply Company, Chengdu, China
3. Electric Power Research Institute, Guangxi Power Grid Company Ltd, Nanning, China
4. Maintenance and Test Center, extra high voltage (EHV), China Southern Power Grid Corporation, Guangzhou, China