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Mathematical Problems in Engineering
Volume 2015, Article ID 278635, 7 pages
http://dx.doi.org/10.1155/2015/278635
Research Article

Short-Term Wind Speed Forecast Based on B-Spline Neural Network Optimized by PSO

Key Lab of Industrial Computer Control Engineering of Hebei Province, College of Electric Engineering, Yanshan University, Qinhuangdao 066004, China

Received 21 December 2014; Revised 24 March 2015; Accepted 7 April 2015

Academic Editor: Julien Bruchon

Copyright © 2015 Zhongqiang Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Considering the randomness and volatility of wind, a method based on B-spline neural network optimized by particle swarm optimization is proposed to predict the short-term wind speed. The B-spline neural network can change the division of input space and the definition of basis function flexibly. For any input, only a few outputs of hidden layers are nonzero, the outputs are simple, and the convergence speed is fast, but it is easy to fall into local minimum. The traditional method to divide the input space is thoughtless and it will influence the final prediction accuracy. Particle swarm optimization is adopted to solve the problem by optimizing the nodes. Simulated results show that it has higher prediction accuracy than traditional B-spline neural network and BP neural network.