Research on Partitioning Real-Time Reactive Power Optimization Method for Distribution Network with Renewable Energy

The randomness of power output and load fluctuations brought about by the high proportion of renewable distributed power sources greatly increases the difficulty of voltage regulation in the distribution network. In this paper, a dynamic partitioning method for real-time optimal scheduling of the distribution network is proposed, taking into account the dynamic reactive power regulation characteristics of distributed power sources such as photovoltaics and energy storage. Firstly, according to the structural characteristics of the radial distribution network, nodes at the end of the branch that are not directly connected to distributed power sources are merged towards the front of the branch, and each node is initially partitioned using the clustering modularity as an indicator. Next, further partitioning is carried out based on the standby reactive power in the partition. Finally, the IEEE-33 node system is used as an example for simulation analysis by MATLAB, and the results show that the partitioning can effectively improve the rapidity of system schedule.