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针对目前光伏功率短期预测方法精度低、运算慢等特点,提出一种基于特征重组与改进Informer-ARIMA的光伏功率短期组合预测方法。先利用完全自适应噪声集合经验模态分解(CEEMDAN)将光伏序列分解为若干个分量,经过特征重组得到特征分量和趋势分量,再分别输入改进Informer和差分自回归移动平均模型(ARIMA)中,叠加2个模型的输出值以得到预测结果。此外,提出双尺度概率稀疏化因果空洞注意力机制,在不显著降低训练速度的情况下增强数据特征挖掘能力,并且缓解异常数据造成特征偏差的问题,进一步提高了模型的预测精度。实验结果表明:与6种主流的预测模型相比,本文所提模型在3~5 d预测任务中预测效果较优,速度较快。
Abstract:Aiming at the characteristics of low accuracy and slow operation of current short-term prediction methods of photovoltaic power, this paper proposed a combined prediction method based on feature reorganization and improved Informer-ARIMA. Firstly, the complementary ensemble empirical mode decomposition with adaptive noise(CEEMDAN) was used to decompose the photovoltaic sequence into several components, and the feature components and trend components were obtained by feature reorganization. Then, they were input into the improved Informer and ARIMA models respectively, and the output values of the two models were superimposed to obtain the prediction results. In addition, a dual-scale probabilistic sparse causal hole attention mechanism was proposed to enhance the ability of data feature mining without significantly reducing the training speed, and to alleviate the problem of feature deviation caused by abnormal data, which further improved the prediction accuracy of the model. The experimental results show that compared with the six mainstream prediction models, the model has better prediction effect and faster speed in the 3~5 d prediction task.
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基本信息:
DOI:10.13624/j.cnki.issn.1001-7445.2025.1195
中图分类号:TM615
引用信息:
[1]黄艳国,刘春华,张慧敏,等.基于特征重组与改进Informer-ARIMA的光伏功率短期组合预测方法[J].广西大学学报(自然科学版),2025,50(06):1195-1208.DOI:10.13624/j.cnki.issn.1001-7445.2025.1195.
基金信息:
国家自然科学基金项目(72061016)
2025-12-25
2025-12-25