Optimal reactive power dispatch based on particle swarm optimization

In this paper, optimal reactive power dispatch based on particle swarm optimization approach. The objectives are power losses in transmission lines and voltage deviation of the system. The algorithm changed the stochastic initialization and adopted a principle of particle searching by itself. More than a few particles in feasible solutions were used to lead swarms motion and update the performance of the proposed approach is demonstrated with the IEEE bus test system. It is observed that the reactive power has decreased while increased and the simulation results show that the particle swarm optimization, which had been adjusted parameters, is better convergent time than other optimization methods.