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电网技术  2010 

风电场常用等值方法的适用性及其改进研究

, PP. 175-180

Keywords: 风电场,建模,等值模型,定速风电机组,等值方法

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Abstract:

为分析定速机组风电场常用等值方法的适用性,以电磁暂态仿真软件PSCAD/EMTDC为分析平台,搭建了定速机组风电场详细模型和等值模型。通过比较风速波动情况下和故障情况下的风电场等值模型与详细模型的并网点输出特性,对2种常用等值方法的适用性进行了分析。结果表明,当风电场风速差异较大时,等值模型会出现一定的误差风速波动下等值模型会出现无功功率误差;故障下等值模型的误差与故障前风速、故障持续时间有关。定性分析了风电场等值模型的误差产生原因,指出风电场常用等值方法与分类方法相结合可大大提高风电场动态等值方法的适用性。

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