State Grid Hunan Electric Power Company Limited Economical & Technical Research Institute, Changsha 410004, China;
State Grid Hunan Electric Power Company Limited, Changsha 410007, China;
Hunan University, Changsha 410082, China;
State Grid Hunan Electric Power Company Limited Economical & Technical Research Institute, Changsha 410004, China;
State Grid Hunan Electric Power Company Limited Economical & Technical Research Institute, Changsha 410004, China;
State Grid Hunan Electric Power Company Limited Economical & Technical Research Institute, Changsha 410004, China;
State Grid Hunan Electric Power Company Limited Economical & Technical Research Institute, Changsha 410004, China;
State Grid Hunan Electric Power Company Limited Economical & Technical Research Institute, Changsha 410004, China;