WANG Yimei,LIU Hui,SONG Peng,et al.Short-term Power Forecasting Method of Wind Farm Based on Gaussian Mixture Model Clustering[J].Automation of Electric Power Systems,2021,45(7):37-43.
WANG Yimei,LIU Hui,SONG Peng,et al.Short-term Power Forecasting Method of Wind Farm Based on Gaussian Mixture Model Clustering[J].Automation of Electric Power Systems,2021,45(7):37-43. DOI: 10.7500/AEPS20200616005.
Short-term Power Forecasting Method of Wind Farm Based on Gaussian Mixture Model Clustering
Accurate forecasting of wind farm power under arbitrary inflow conditions is an effective way to improve the ability of the power grid to accept wind power. Aiming at the limitation of poor representativeness of single-point wind speed extrapolation for power forecasting of large-scale wind farms
a short-term power forecasting method of wind farm based on Gaussian mixture model (GMM) clustering is proposed. The method combines the characteristics of data distribution
uses GMM clustering to divide large-scale wind farms into several unit groups
and obtains the optimal unit grouping scheme in the wind farm based on the index evaluation of Bayesian information criterion. The actual example verifies that the established GMM clustering model greatly improves the accuracy of ungrouped wind power forecasting models based on hourly
monthly
annual and other time scales. Compared with widely used methods such as
k
-means clustering and hierarchical agglomerative clustering
the GMM clustering method shows significant advantages in grouped power forecasting
which provides technical support and basis for the optimization of short-term power forecasting models for large-scale wind farms and the improvement of the operation economy.
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references
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