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1.电力传输与功率变换控制教育部重点实验室(上海交通大学),上海市 200240
2.国家电网公司华东分部,上海市 200120
3.中国电力科学研究院有限公司(南京),江苏省南京市 210003
Received:28 February 2020,
Revised:2020-08-24,
Published Online:01 October 2020,
Published:10 January 2021
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周楠,徐潇源,严正等.基于宽度学习系统的光伏发电功率超短期预测[J].电力系统自动化,2021,45(1):55-64.
ZHOU Nan,XU Xiaoyuan,YAN Zheng,et al.Ultra-short-term Forecasting of Photovoltaic Power Generation Based on Broad Learning System[J].Automation of Electric Power Systems,2021,45(1):55-64.
周楠,徐潇源,严正等.基于宽度学习系统的光伏发电功率超短期预测[J].电力系统自动化,2021,45(1):55-64. DOI: 10.7500/AEPS20200228002.
ZHOU Nan,XU Xiaoyuan,YAN Zheng,et al.Ultra-short-term Forecasting of Photovoltaic Power Generation Based on Broad Learning System[J].Automation of Electric Power Systems,2021,45(1):55-64. DOI: 10.7500/AEPS20200228002.
近年来,深度学习被应用于光伏发电预测中,体现出预测精度较高的优点,但也存在训练耗时等问题。对此,提出了一种基于自组织映射与宽度学习系统的光伏发电功率超短期预测模型。首先,采用自组织映射对各时刻的光伏数据进行精细化聚类,提取不同时段与气象条件下的出力波动特征;然后,构建基于宽度学习系统的光伏发电功率多步长预测模型,在网络宽度上扩展节点数目,并通过求解矩阵伪逆训练神经网络,在保证较强高维数据拟合能力的同时,具有较高的计算效率;最后,采用实际光伏发电数据进行算例分析,通过与常用的光伏发电超短期预测方法进行比较,验证所提出的方法在预测精度与训练效率上的优越性。
In recent years
deep learning has been applied to photovoltaic (PV) power forecasting and shows the advantage of high accuracy. However
there also exist problems such as time-consuming training. In order to handle these problems
an ultra-short-term forecasting model of PV power generation based on the self-organizing map (SOM) and broad learning system (BLS) is proposed. Firstly
the SOM is applied to cluster the PV data at each moment to extract the fluctuation characteristics during different periods and under different meteorological conditions. Secondly
a multi-step forecasting model of PV power generation based on BLS is constructed
which increases the number of neurons in width and is trained by calculating the pseudoinverse matrix
thus guaranteeing strong capability for fitting high-dimensional data while keeping high computation efficiency. Finally
the actual PV power generation data are used to carry out the case study. By comparing with commonly used ultra-short-term forecasting methods
the superiority of the proposed method in terms of forecasting accuracy and training efficiency is verified. This work is supported by National Natural Science Foundation of China (No. 52077136).
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