Research On The Microsource Operation Control Method Based On Multi-agent System

With the development of the new green energy technology,distributed energy more and more involved in the global energy markets.At the same time,the development of smart grid and micro-grid technology also make a full use of micro source.Multi-agent system as one of the intelligent control methods,which could provide a autonomy hierarchical management system without managers often appear,can alleviate micro-source’s problem of distributed widely and difficult to grid.The operation control of micro source and micro-grid that consist of micro source is selected as the research object,design a hierarchical control method based on multi-agent system to make micro sources,just like photovoltaic power generation,wind power,battery,etc,under control.Photovoltaic power generation,wind power and battery are selected as research object.Output characteristics and principle of those micro sources are studied and the mathematical model of micro sources are established.Control model are set up and verify it effectiveness by MATLAB/Simulink.The three-phase voltage type inverter is studied and its mathematical model is established.The control mode of micro source is analyzed,and designed the control models of the constant power and constant voltage constant frequency.In order to ensure that micro network output does not cause the fluctuation of distribution network,during the micro-grid switch between Grid-connected and Island mode research the compensation method and the control method of smoothly switching control mode of inverter.Based on the autonomous and coordinated control of micro source,multi-agent coordination control strategy is designed in this paper which contains photovoltaic,wind power,storage battery and the load.Simulate the micro-grid in the Island mode,Grid-connected operation mode and operation control during the switching mode and verify the function and the coordination strategy of each unit agent,control agent.Simulation results show that,the paper designed micro source operation control which is based on multi-agent system can be used on control micro-grid of Island,Grid-connected and mode switching,ensure maximum power point of micro source operation,meet the power requirements of the local load,and can maintain micro-grid running smoothly and steady output,without impulse the operation of large power grid.