Research on Distribution Grid Risk Assessment and optimization for High Proportion Distributed Energy Access

With the wide access of a variety of distributed energy sources in China’s low-carbon station area, it is inevitable to have a negative impact on the grid loss, power quality and other aspects of the distribution grid, and the current low carbon station area lacks effective control means for multi-energy applications. Firstly, this paper analyzes the operation characteristics of the distribution grid with multiple power supplies, and establishes a coordinated optimization model of distributed power supply and energy storage based on cluster division, so as to minimize the overall loss of the distribution grid system. Secondly, under the condition that the optimization result is not inferior to the preset value, the fluctuation interval of the uncertainty variable is maximized, so as to avoid the influence of uncertainty on the solution result to the maximum extent. Finally, the risk avoidance optimization model is established, and the multi-objective particle swarm optimization algorithm is used to solve the optimization model. The method described in this paper and the simulation example have reference significance for the optimization of distribution grid with high proportion of distributed energy.