Short-term wind power forecasting based on improved crow search algorithm and ESN neural network

被引:0
|
作者
Ju Y. [1 ]
Qi L. [2 ]
Liu S. [3 ]
机构
[1] Henan Xinxiang Vocational and Technical College, Xinxiang
[2] Henan University of Urban Construction, Pingdingshan
[3] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding
基金
中国国家自然科学基金;
关键词
Crow search algorithm (CSA); ESN neural network; Gauss function; Lévy flight; Wind power forecasting;
D O I
10.7667/PSPC180251
中图分类号
学科分类号
摘要
Accurate short-term wind power forecasting is important for improving the economic and stable operation of power system. Since it is easy to be affected by subjective factor and fall into local optimum in parameters selecting compared with traditional Neural Network, a novel combination forecasting approach based on Improved Crow Search Algorithm (ICSA) to optimize the parameters of Echo State Network (ESN) neural network is proposed to overcome above inadequacies. The Lévy flight is introduced to increase the searching efficiency at initial stages, and during the later stage of iteration, the Gauss function is added aiming at making an appropriate adjustments for the whole trajectory points after evolution, which can guarantee the ability of global optimization and successive approximation; it chooses optimal the weight values of the hidden layer to enhance the efficiency of neural network training by ICSA algorithm. Finally, effectiveness of the proposed forecasting model is tested on two groups of experimental data, the results show that proposed algorithm can effectively cope with the variability and intermittency of wind power time series, having higher modeling precision and faster convergence speed. © 2019, Power System Protection and Control Press. All right reserved.
引用
收藏
页码:58 / 64
页数:6
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