1. State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co.Ltd., Beijing 102201, China
2. State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China
3. Beijing Key Laboratory of Environment Noise and Vibration, Beijing Municipal Institute of Labor Protection, Beijing 100054, China
4. State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China