Research support for key technologies for distributed computing grid investment analysis
Geli Zhang, Tong Li, Xiaohui Wang, Wei Cheng, Heng Zhang, Yujie Wang · 2025
With the high proportion of new source loads such as distributed power sources, electric vehicles, and energy storage, as well as the rapid development of new models and formats such as microgrids, integrated energy, and virtual power plants, the distribution network is gradually transforming from a power network that simply receives and distributes electricity to users to a power network that integrates source grid load storage interaction and flexibly couples with the higher-level power grid. In recent years, State Grid Economic and Technological Research Institute has focused on original technology research and development in the field of distribution networks, fully supporting the construction of original technology source areas. It has developed a distribution network simulation calculation and analysis platform with completely independent intellectual property rights, supporting the construction of new distribution systems in multiple regions. The development of new source loads may lead to local concentration and overall imbalance, resulting in significant differences in load rates between different regions and lines of the distribution network. This often leads to issues of insufficient or unusable equipment capacity, which is not conducive to improving the overall quality and efficiency of the distribution network. The State Grid Economic and Technological Research Institute, in collaboration with the United Nations Grid Tianjin Electric Power Company, has established a flexible interconnection technology system for distribution networks, developed the world's first set of corresponding flexible interconnection power electronic equipment, and implemented it in the Beichen National Industry City Integration Demonstration Zone in Tianjin. After the project is put into operation, the load balancing degree of the demonstration zone's power grid has reached over 99%, the power supply capacity of the power grid has increased by nearly 40%, and important industrial enterprises have achieved "zero power outages".