Explicit basis function kernel methods for cloud segmentation in infrared sky images

Photovoltaic systems are sensitive to cloud shadow projection, which needs to be forecasted to reduce the noise impacting the intra-hour forecast of global solar irradiance. We present a comparison between different kernel discriminative models for cloud detection. The models are solved in the prima...

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Bibliographic Details
Published in:Energy reports 2021-11, Vol.7, p.442-450
Main Authors: Terrén-Serrano, Guillermo, Martínez-Ramón, Manel
Format: Article
Language:English
Subjects:
Cloud segmentation
Kernel methods
Machine learning
Sky imaging
Solar forecasting
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Summary:Photovoltaic systems are sensitive to cloud shadow projection, which needs to be forecasted to reduce the noise impacting the intra-hour forecast of global solar irradiance. We present a comparison between different kernel discriminative models for cloud detection. The models are solved in the primal formulation to make them feasible in real-time applications. The performances are compared using the j-statistic. The infrared cloud images have been preprocessed to remove debris, which increases the performance of the analyzed methods. The use of the pixels’ neighboring features also leads to a performance improvement. Discriminative models solved in the primal yield a dramatically lower computing time along with high performance in the segmentation.
ISSN:2352-4847
2352-4847
DOI:10.1016/j.egyr.2021.08.020