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电网技术  2009 

基于小波–神经网络的风速及风力发电量预测

, PP. 44-48

Keywords: 风力发电,风速预测,小波–神经网络

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Abstract:

风能作为可再生清洁能源已得到世界各国的广泛应用。由于风速的不确定性,给保障风力可靠性发电带来了一定的困难。提出了一种较为准确的小波–神经网络法预测风速。该方法利用小波函数将原始波形进行不同尺度的分解,将分解得到的周期分量用时间序列进行预测,其余部分采用神经网络进行预测,最后将信号序列进行重构得到完整的风速预测结果。在神经–网络学习过程中加入了微分进化算法,提高了其收敛速度,解决了局部最小化问题。通过实例分析证明了该算法能较为准确地预测风速。

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