Journal
EXPERT SYSTEMS WITH APPLICATIONS
Volume 181, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2021.115167
Keywords
Solar radiation forecast; Convolutional Neural Networks; Variational Mode Decomposition; Energy forecast; Renewable energy
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This paper introduces a novel methodology for forecasting Global Horizontal Solar Irradiance using machine learning techniques and complex models, incorporating different meteorological information to achieve short- and long-term predictions, and discussing the accuracy of the experimental results.
Nowadays, we are moving forward to more sustainable energy production systems based on renewable sources. Among all Photovoltaic (PV) systems are spreading in our cities. In this view, new models are needed to forecast Global Horizontal Solar Irradiance (GHI), which strongly influences PV production. For example, this forecast is crucial to develop novel control strategies for smart grid management. In this paper, we present a novel methodology to forecast GHI in short- and long-term time-horizons, i.e. from next 15 min up to next 24 h. It implements machine learning techniques to achieve this purpose. We start from the analysis of a real-world dataset with different meteorological information including GHI, in the form of time-series. Then, we combined Variational Mode Decomposition (VMD) and two Convolutional Neural Networks (CNN) together with Random Forest (RF) or Long Short Term Memory (LSTM). Finally, we present the experimental results and discuss their accuracy.
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