1. School of Electrical Engineering, Weihai Innovation Research Institute, Qingdao University, Qingdao 266000, China
2. Machine Electric Soft Network Administration Capital (MESNAC) Cooperation, Qingdao 266042, China
3. Strategy Research Institute, State Power Investment Cooperation, Beijing 100029, China
4. College of Physics, Weihai Innovation Research Institute, Qingdao University, Qingdao 266000, China
5. School of Information Engineering, Zhejiang University of Technology, Hangzhou 310014, China