• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2019, Vol. 40 ›› Issue (7): 26-33.doi: 10.3969/j.issn.1000-7229.2019.07.004

• 促进高比例新能源消纳的光伏发电功率与负荷预测·栏目主持 王飞教授· • 上一篇    下一篇

基于改进权值优化模型的光伏功率区间预测

韦善阳,黎静华,黄乾   

  1. 广西电力系统最优化与节能技术重点实验室(广西大学),南宁市 530004
  • 出版日期:2019-07-01
  • 作者简介:作者简介: 韦善阳(1993),男,博士研究生,主要研究方向为高比例可再生能源电力系统预测技术; 黎静华(1982),女,博士,教授,主要研究方向为电力系统优化运行与控制、大规模风电并网技术等; 黄乾(1989),男,博士研究生,主要研究方向为高比例可再生能源电力系统预测技术。
  • 基金资助:
    国家重点研发计划项目(2016YFB0900100);国家自然科学基金项目(51377027)

Interval Prediction of Photovoltaic Power Applying Improved Weight Optimization Model

WEI Shanyang, LI Jinghua, HUANG Qian   

  1. Guangxi Key Laboratory of Power System Optimization and Energy-Saving Technology(Guangxi University), Nanning 530004, China
  • Online:2019-07-01
  • Supported by:
    This work is supported by the National Key Research and Development Program of China(No. 2016YFB0900100) and National Natural Science Foundation of China (NSFC) (No. 51377027).

摘要: 区间预测方法可以反映光伏发电功率可能的变化范围,提供比点预测方法更丰富的预测信息。文章提出了一种基于径向基函数(radial basis function,RBF)神经网络的区间预测模型以直接输出光伏功率预测区间。为优化模型输出区间的性能和避免惩罚系数选择问题,构建了一种考虑区间预测偏差信息的改进预测区间优化模型,并采用粒子群算法(particle swarm optimization,PSO)求解,获得最优RBF神经网络输出权值以提高预测区间的可信度和准确性。通过对比传统区间优化模型和所提改进区间优化模型的预测结果,发现改进区间优化模型能够获得宽度更窄和预测偏差更小的光伏功率预测区间,可为调度决策提供更准确的辅助信息。

关键词: 光伏功率, 区间预测, 径向基函数(RBF)神经网络, 粒子群优化(PSO)

Abstract: Interval prediction method can reflect the possible range of photovoltaic power, and provide more abundant forecasting information than point prediction method. An interval prediction model based on Radial Basis Function (RBF) neural network is proposed to directly output the prediction interval of photovoltaic power. In order to optimize the performance of the output interval of the model and avoid the problem of choosing penalty coefficient, an improved prediction interval optimization model considering the bias information of the interval prediction is constructed and solved by particle swarm optimization (PSO) algorithm to obtain the optimal RBF neural network output weights, and improve the reliability and accuracy of the prediction interval. By comparing the prediction results of the traditional interval optimization model and the improved interval optimization model, it is found that the improved interval optimization model can obtain more accurate prediction interval of photovoltaic power, and can provide more accurate auxiliary information for dispatching decision-making.

Key words: photovoltaic power, interval prediction, radial basis function , (RBF) neural network, particle swarm optimization(PSO)

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