华电技术 ›› 2018, Vol. 40 ›› Issue (1): 1-4.

• 研究与开发 •    下一篇

基于灰色模型的风速概率分布参数预测

  

  1. 华北电力大学.科技学院;控制与计算机工程学院,河北保定〓071003
  • 出版日期:2018-01-25 发布日期:2018-02-07

Prediction for the probabilistic distribution parameters of wind speed based on Grey Model

  1. .School of Technology; .School of Control and Computer Engineering, North China Electric Power University, Baoding 071003, China
  • Online:2018-01-25 Published:2018-02-07

摘要:

假设风速服从两参数威布尔(Weibull)分布,提出了采用灰色Verhulst模型对风速分布参数进行预测的方法。首先根据实测的历史风速数据按月拟合,把平均风速和标准差代入Weibull分布公式计算每年的分布参数,并对得到的预测数据进行检验与分析;然后将预测数据代入灰色Verhulst模型进行对比与分析;最后根据所获得的历史参数规律,预测未来年份的分布参数。计算结果表明,灰色Verhulst模型可以利用较少的历史数据预测得到较高精度的风速分布参数,为风电场资源评估提供一定的理论依据。

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Abstract:

On the premise that two parameters of wind speed subject to the Weibull distribution, based on Grey Verhulst Model, a method which is used to predict wind speed distribution parameters is proposed .Firstly, historical wind speed data was measured and fitted monthly. The average wind speed and standard deviation were substituted into the Weibull distribution equation to calculate the annual distribution parameters and the calculated prediction data are tested and analyzed. Then, the prediction data are substituted into Grey Verhulst Model for comparison and analysis. Finally, the wind speed distribution parameters of future years are predicted based on the historical regularity. Numerical results indicate that the Grey Verhulst Model can calculate highly accurate distribution parameters within fewer historical data.  This model can provide certain theoretical basis for the wind farm resource assessment.

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