基于CEEMDAN-精细复合多尺度熵和Stacking集成学习的短期风电功率预测CEEMDAN-refined composite multiscale entropy and stacking ensemble learning-based short-term wind power prediction
康文豪,徐天奇,王阳光,邓小亮,李琰
摘要(Abstract):
为了解决风电功率的间歇性与非平稳性带来的功率预测难度,提出了一种基于CEEMDAN-精细复合多尺度熵和Stacking集成学习的短期风电功率预测方法。在对风电功率进行预测之前,对风电功率数据进行预处理。首先引入自适应噪声完备集合经验模态分解(CEEMDAN)方法分解风电功率原始序列,并计算各分解分量的精细复合多尺度熵(RCMSE)。然后,将熵值相近的分量序列重组成新序列,以降低模型复杂度和提高计算效率。在预测阶段,对重组之后的序列分别建立Stacking集成学习模型进行风电功率短期预测,最后对预测结果进行重组。通过新疆某风电场实测数据证明:结合各单一预测模型优点的Stacking集成学习模型方法与其4种基学习器KNN、RF、SVR和ANN相比,Stacking模型具有更高的风电预测准确度。在同等条件下,CEEMDAN-RCMSE-Stacking模型均方根误差相比单一的Stacking模型及EMD-RCMSE-Stacking模型分别减少了20.34%和9.74%,平均绝对误差分别减少了24.55%和6.35%,而拟合优度系数分别提高了4.09%和1.62%,即CEEMDAN-RCMSE-Stacking模型拥有更高的预测性能。
关键词(KeyWords): 短期风电功率预测;CEEMDAN;精细复合多尺度熵;Stacking集成学习;影响因素;新能源;清洁可再生能源
基金项目(Foundation): 国家自然科学基金项目(61761049)
作者(Author): 康文豪,徐天奇,王阳光,邓小亮,李琰
DOI: 10.13928/j.cnki.wrahe.2022.02.016
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