1. 1 Information System Integration Branch of State Grid Nanrui Technology Co , Nanjing, Jiangsu, 210000 , China .
2. 2 Gansu Keyuan Power Group Ltd , Lanzhou, Gansu, 730000 , China .
3. 3 State Grid Gansu Province Electric Power Company Headquarters , Lanzhou, Gansu, 730000 , China .
4. 4 Digital Division of State Grid Gansu Electric Power Company , Lanzhou, Gansu, 730050 , China .