Coordinated Control Strategy Of Micro-grid Based On Multi-agent

In recent years, China’s power industry has entered the stage of regional network, butdue to the low frequency oscillation of synchronous power grid, the grid is restricted byload so the large power grid is difficult to control, especially after several of the electricpower accident’ happen all over the world, people find the disadvantages of large powergrid. At the same time, because of exhaustion of fossil fuels and environment pollution isbecoming more and more serious, people will concentrate their attention to the develop-ment of clean distributed energy, but distributed generation has many problems need to besolved, especially grid-connected problem. Micro-grid followed successfully solves thisproblem, so the development of micro-grid has broad prospects.Firstly, the definition of micro-grid, significance meaning of micro-grid and the de-velopment conditions of micro-grid all over the world were introduced; then in the paperthe multi-agent technology was proposed. Because of the characteristics of the multi-agenttechnology, the multi-agent is applied to the micro-grid, which is contributed to the microgrid develops to the intelligent direction.Then, the micro-grid equivalent model was established, to achieve the design methodof PQ controller, V/f controller and synchronization grid controller The bi-DC/DC con-verter of energy storage isused to connect storage and DC bus, enable the energy to flowin bi-direction and make the storage to follow the reference power. Micro grid using thecomprehensive control strategy, effectively compensate for the lack of master-slave opera-tion and peer-to-peer control; then, I build the simulation model of the micro-grid throughthe matlab/simulink experimental platform. There is simulation analysis to verify the ef-fectiveness and correctness of the control strategies according to different operation char-acteristics.Finally, an micro-grid management system was build through the integration ofAgent technology and distribution management system based on JADE platform, themodel can well simulate the power scheduling process, and ease to introduce the intelli-gent control. strategy to the model. The simulation results show that the distributed power management system based on JADE platform to the energy supply system can managevarious micro power suppler effectively, the improve the efficiency of power grid.