【摘要】 分析了变速恒频双馈风电机组(DFIG)的频率控制策略。随着大规模风电并网,以往DFIG机组的调频能力难以适应,因此文中增加了频率控制单元和转速延时恢复模块。在Matlab中建立仿真系统,仿真结果表明,双馈风电机组在一定程度上可以快速响应频率的变化,提供有效的功率支撑,并且可有效改善系统的频率响应特性。更多还原

【Abstract】 The frequency control strategy of variable speed constant frequency doubly fed induction generator(DFIG)was analyzed.With the large-scale wind power generator connected to the grid network,the frequency modulation capability of the DFIG unit was difficult to adapt.Therefore,the frequency control unit and the speed delay recovery module were added in this paper.The simulation system was built in Matlab.The simulation results showed that doubly fed wind turbines can respond to the frequency changes to a certain extent,provide effective power support,and effectively improve the frequency response characteristics of the system.更多还原