Simulation And Study On Operation Control Of Microgrid Based On The Wind Turbine

The rapid penetration of a large number of distributed generations poses new challenges for the safe and effective operation of the main grid.A better way to realize the emerging potential of distributed generation is to take a system approach which views generation and associated loads as a subsystem or a "micro-grid".A growing number of scholars are studying on controlling and operating management of microgrid at home and abroad.Based on microgrid structure composed of the doubly fed induction generator(DFIG) and MS2,this thesis discusses modeling and control strategy on two different kinds of microsources in detail.As an intermittent energy resource,to maximize output power of the DFIG,a control strategy based upon maximum point of power tracking is used to deliver the maximum power under all viable conditions.While the control strategy of the MS2 switches from P/Q-control during grid-connected operation to either droop-control or frequency/voltage-control when islanded.Finally,the simulation results show that the microgrid has the ability to operate stably and autonomously.And the microsources can control coordinately in every case,for instance,change of wind speed or different loads.The control strategy designed is feasible and effective.