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电网技术  2009 

风电场短期风速的混沌预测方法

, PP. 67-71

Keywords: 风力发电,风速预测,相空间重构,混沌预测方法

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Abstract:

高精度的短期风速预测对提高含大量风电机组电网的安全稳定性及降低运行成本具有重要意义。文中在对风速时间序列进行相空间重构的基础上,使用混沌加权零阶局域预测法对风速进行预测;进而针对该方法在高嵌入维数下以欧氏距离寻找临近相点进行预测不准确的不足,提出了一种改进加权零阶局域预测法。该方法用相点间关联度来确定临近相点,并且提出了一种新的加权系数计算方法,以提高预测精度。算例分析结果验证了该方法的可行性和有效性。

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