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一种双馈式风力发电系统的等效模型

, PP. 210-217

Keywords: 分布式发电,负荷建模,双馈式感应电机,等效模型,差分方程

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Abstract:

为研究含分布式双馈风力发电的配电网广义综合负荷特性,本文提出了一种双馈式风力发电系统的三阶感应电机综合等效模型。分析了DFIG发电系统的等效电路、静态功率特性及其控制策略;讨论了DFIG等效模型的结构特点及其参数辨识方法;通过在输出方程中引入一阶差分环节,提出了具有一阶内反馈结构的模型改进方案,显著改善了三阶等效模型对DFIG发电系统的动态特性的描述能力,并在机理上对该改进模型的物理意义进行了阐述;最后通过一系列的建模仿真实验,验证了该模型的有效性。

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