基于小波变换的风电场短期风速组合预测

被引:62
作者
田中大 [1 ]
李树江 [1 ]
王艳红 [1 ]
高宪文 [2 ]
机构
[1] 沈阳工业大学信息科学与工程学院
[2] 东北大学信息科学与工程学院
基金
国家自然科学基金重点项目;
关键词
短期风速; 小波变换; 自回归求和滑动平均模型; 最小二乘支持向量机; 组合预测;
D O I
10.19595/j.cnki.1000-6753.tces.2015.09.015
中图分类号
TM614 [风能发电];
学科分类号
0807 ;
摘要
针对风电场短期风速的预测提出一种基于小波变换的组合预测方法。首先利用Mallat算法对短期风速时间序列进行db3小波三层分解与重构,得到短期风速时间序列的近似分量和细节分量。针对近似分量和细节分量的不同特性,对近似分量利用粒子群算法优化的最小二乘支持向量机进行预测,对细节分量利用自回归求和滑动平均模型进行预测。最后各预测模型预测值组合叠加得到最终的短期风速预测值。仿真结果表明该方法具有较高的预测准确度。
引用
收藏
页码:112 / 120
页数:9
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