1. Comprehensive Service Center, State Grid Tianjin Electric Power Company, Tianjin, China
2. State Grid Tianjin Electric Power Company, Tianjin, China
3. State Grid Corporation of China, Beijing, China
4. School of Electrical and Information Engineering, Tianjin University, Tianjin, China
5. Tianjin Tianyuan Power Engineering Company Ltd., Baodi Power Supply Branch, State Grid Tianjin Electric Power Company, Tianjin, China
6. Electric Power Research Institute, State Grid Shanxi Electric Power Company, Taiyuan, China
7. Information and Communication Branch, State Grid Shanxi Electric Power Company, Taiyuan, China
8. Taiyuan Power Supply Company, State Grid Shanxi Electric Power Company, Shanxi, Taiyuan, China
9. Chengxi Power Supply Branch, State Grid Tianjin Electric Power Company, Tianjin, China
10. Ningdongshengyuan Electric Power Engineering Company Ltd., Ninghe Power Supply Branch, State Grid Tianjin Electric Power Company, Tianjin, China
11. Zhangjiakou Wanquan District Power Supply Branch, State Grid Jibei Electric Power Company Ltd., Heibei, Zhangjiakou, China