Research on economic operation of grid-connected DC microgrid

The application of DC microgrid is conductive to the integration of renewable energy sources into the distribution system and the improvement of power system flexibility. The economic operation of DC microgrid is a significant aspect of DC microgrid development. In this paper, an optimal scheduling model considering the characteristics of DC microgrid, which contains economic cost, environmental cost, net loss and various constraints, has been established. Then the improved hybrid particle swarm optimization (HPSO) algorithm was used to solve the model. Finally, the simulation results were analyzed, which verified the validity and effectivity of the proposed optimization strategy.