Distribution Network Dynamic Zoning and Reactive Power Optimization

Distributed power supply has a high access ratio, and its output random superposition load fluctuations make it difficult to adjust reactive power voltage in distribution system, not as simple as the system with fixed output power. Therefore, aiming at these distributed power sources, such as wind power generators and solar photovoltaic power generation, which can change the output capacity at any time, a new method is proposed to dynamically partition and perform reactive power optimization as their output becomes high or low. Based on the tree-like layout of the distribution network, the maximum modularity function value of the whole system is taken as the hard constraint condition, and the sub-regions are adjusted according to the operating value of the system and whether the reactive power margin in each sub-region meets the established standards. Thus, the optimal zoning scheme is formed; And optimize on the basis of completing these tasks. Finally, the IEEE33-node system is taken as an example to verify that the method can solve the partition problem caused by the new energy grid connection with random output to a certain extent. Key innovations include: 1. Dynamic zoning mechanism adapting to renewable energy fluctuations 2. Hybrid optimization combining structural modularity with operational constraints 3. Real-time adjustment capability for voltage regulation precision This methodology provides a viable solution for modern power systems transitioning toward sustainable energy integration,