Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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基于LIESN的光伏功率预测研究

来源:电工电气发布时间:2018-04-19 09:19 浏览次数:547
基于LIESN的光伏功率预测研究
 
孙鹏1,张依强1,焦程炜2
(1 国网山东省电力公司菏泽供电公司,山东 菏泽 274000;2 国网山东省电力公司莱芜供电公司,山东 莱芜 271100)
 
    摘 要:为了光伏功率预测结果有更好的准确性与普适性,提出基于泄漏积分型回声状态网络(LIESN) 的具有在线学习功能的预测方法。在回声状态网络(ESN) 中引入泄漏积分型神经元,增强储备池的短期记忆能力;分析了LIESN的参数对其光伏功率预测性能的影响,得到优化后的预测模型;利用最小二乘在线学习算法对模型实施训练,得到最终的在线学习LIESN预测模型。实例证明,该算法可完成复杂的建模且适用于多种天气情况,预测精度优于BP神经网络、经典ESN及LIESN模型,验证了方法的有效性。
    关键词:回声状态网络;泄漏积分;神经元;光伏功率预测;在线学习
    中图分类号:TM615     文献标识码:A     文章编号:1007-3175(2018)04-0018-06
 
Online-Learning PV Power Forecasting Based on Leaky-Integrator ESN
 
SUN Peng1, ZHANG Yi-qiang1, JIAO Cheng-wei2
(1 Heze Power Supply Company, Heze 274000, China; 2 Laiwu Power Supply Company, Laiwu 2711 00, China)
 
    Abstract: In order to enhance computing accuracy and universality of photovoltaic (PV) power forecasting, this paper proposed a online-learning method based on leaky-integrator echo state network(LIESN). Leaky-integrator neurons were introduced to plain ESN and the short-term memory ability was promoted. The impact of parameters of LIESN on PV power forecasting performance was analyzed and an optimized model was obtained. The model was trained by least squares online learning algorithm and final forecasting was obtained. By practical examples, complicated model can be established and applied to various weather conditions. The forecasting accuracy was superior to the BP neural network and plain ESN and the validity of proposed method is testified.
    Key words: echo state network; leaky-integarator; neurons; photovoltaic power forecasting; online learning
 
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