Distribution Network Reactive Power Optimization Method with Distributed Power Sources Based on Improved Particle Swarm Optimization

In order to solve the problem that the integration of Distributed Generation (DG) into the distribution network leads to changes in the grid operation mode and affects the optimal operation of the grid, this paper proposes a reactive power optimization method for distribution network containing distributed power supply based on improved particle swarm optimization. The inertia weights and acceleration factors of the particle swarm optimization are improved for the reactive power optimization problem. An optimization model with the objective of minimizing active network loss is established, with full consideration of the constraints of power balance, control variables and state variables. And the improved IEEE-33 node system is simulated and analyzed, and the validity and practicability of the model are verified by comparing with the traditional particle swarm optimization.