Journal
COMPUTERS & ELECTRICAL ENGINEERING
Volume 78, Issue -, Pages 373-387Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compeleceng.2019.07.023
Keywords
Hybrid Intelligent System; Clustering, regression; Neural networks; Solar energy; Renewable energies
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There is wide acknowledgement that solar energy is a promising and renewable source of electricity. However, complementary sources are sometimes required, due to its limited capacity, in order to satisfy user demand. A Hybrid Intelligent System (HIS) is proposed in this paper to optimize the range of possible solar energy and power grid combinations. It is designed to predict the energy generated by any given solar thermal system. To do so, the novel HIS is based on local models that implement both supervised learning (artificial neural networks) and unsupervised learning (clustering). These techniques are combined and applied to a real-world installation located in Spain. Alternative models are compared and validated in this case study with data from a whole year. With an optimum parameter fit, the proposed system managed to calculate the solar energy produced by the panel with an error that was lower than 10(-4) in 86% of cases. (C) 2019 Elsevier Ltd. All rights reserved.
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