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基于VMD-IGWO-SVM的風(fēng)電功率超短期預(yù)測(cè)研究

來源:電工電氣發(fā)布時(shí)間:2019-01-21 14:21 瀏覽次數(shù):807
基于VMD-IGWO-SVM的風(fēng)電功率超短期預(yù)測(cè)研究
 
沈岳峰,都洪基
(南京理工大學(xué) 自動(dòng)化學(xué)院,江蘇 南京 210094)
 
    摘 要:為了提高風(fēng)電功率預(yù)測(cè)精度,保證風(fēng)能的有效利用,提出一種基于變分模態(tài)分解和改進(jìn)灰狼算法優(yōu)化支持向量機(jī)的風(fēng)電功率超短期組合預(yù)測(cè)模型。采用變分模態(tài)分解將風(fēng)電功率序列分解為一系列具有不同中心頻率的模態(tài)分量以降低其隨機(jī)性,將各分量分別建立支持向量機(jī)預(yù)測(cè)模型,并采用改進(jìn)灰狼算法對(duì)其參數(shù)尋優(yōu),將各分量的預(yù)測(cè)值疊加重構(gòu)得到最終的預(yù)測(cè)值。實(shí)例仿真表明,所提的組合預(yù)測(cè)模型與其他預(yù)測(cè)模型相比具有更高的預(yù)測(cè)精度。
    關(guān)鍵詞:風(fēng)電功率超短期預(yù)測(cè);變分模態(tài)分解;改進(jìn)灰狼算法;支持向量機(jī);預(yù)測(cè)精度
    中圖分類號(hào):TM715     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2019)01-0020-06
 
Research on Ultra-Short-Term Wind Power Prediction Based on VMD-IGWO-SVM
 
SHEN Yue-feng, DU Hong-ji
(School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China)
 
    Abstract: In order to improve the accuracy of wind power prediction and to ensure the effective utilization of wind energy, this paper proposed a combined model based on VMD and SVM optimized by IGWO for ultra-short-term wind power prediction. VMD was used to decompose the wind power series into a series of modal components with different central frequencies to reduce its randomness. The SVM prediction model was established for each component and its parameters were optimized by IGWO. The predicted value of each component was superimposed to get the final predicted value.Simulation results show that compared with other prediction models, the proposed combination prediction model has higher prediction accuracy.
    Key words: ultra-short-term wind power prediction; variational mode decomposition; improved grey wolf optimizer; support vector machine; prediction accuracy
 
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