双馈风机并网仿真模型的改进研究

Research on the Improvement of the Integrated Simulation Model of the Double-fed Induction Generator

由于仿真计算得到的双馈风机输出特性与实测数据误差较大,提出利用风场实测数据改进现有双馈风机模型的方法,通过数据拟合对实测数据进行处理,得到风机端口输出特性的数学模型,再根据此模型改进双馈风机控制模型,仿真算例表明,改进模型能有效地反映实际运行中双馈风机输出特性,提高双馈型风电系统并网仿真的准确性。

As there＇s a large error between the simulation results of the DFIG output characteristics and the measurement data, a method uses the measuring data of the wind farm to improve the DFIG model is proposed. The data fitting is used to get the mathematical model of the operating turbine, then the model is studied to improve its control strategy. The example results in PSCAD shows ： the modified model reflects the output characteristics of the operating turbine truthfully and has improved the simulation accuracy of wind power integration.