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电网技术  2007 

基于经验模式分解的聚类树方法及其在同调机组分群中的应用

, PP. 21-25

Keywords: 聚类树,功角轨迹,加权距离,同调分群,经验模式分解(EMD)

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Abstract:

提出了一种基于经验模式分解(empiricalmodedecomposition,EMD)的聚类树分群方法。在系统聚类分析的基础上,提出了基于权重距离的综合聚类指标,以各机功角轨迹之间距离最小为准则,实现了多机系统同调机组的合理分群。为解决电力系统受扰后动态行为非平稳、非线性的问题,文中采用EMD方法对原始数据进行预处理。EPRI-36节点系统计算结果表明,在不太严重的扰动下和允许的误差范围内,各种扰动下均可得到基本一致的聚类分群结果,从而佐证了该方法的有效性。

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