Research on Dynamic Reactive Power Optimization of Distribution Network with Distributed Generation

The traditional reactive power optimization is based on the load of the power grid at a certain instantaneous moment, while the dynamic reactive power optimization is different. It optimizes the reactive power according to the load change curve throughout the day, thereby reducing the network loss of the entire power grid. From the perspective of economy, the adjustment cost is taken as the objective function, which avoids the strong coupling between network loss and constraint conditions. From the perspective of safety, the voltage stability index is proposed. Finally, the reactive power compensation equipment is added to the IEEE33 node distribution network, and the improved particle swarm optimization algorithm is used to solve the problem. The results show that the system network loss and node voltage stability have been significantly improved after adding the compensation equipment.