1. Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang 550000, China
2. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
3. Xingyi Power Supply Bureau of Guizhou Power Grid Co., Ltd., Xingyi 562400, China
4. International Joint Research Center for Surface and Interface Materials Science and Engineering, Wuhan University, Wuhan 430072, China