An Effective Hybrid Symbolic Regression–Deep Multilayer Perceptron Technique for PV Power Forecasting

Mohamed Trabelsi (), Mohamed Massaoudi, Ines Chihi, Lilia Sidhom, Shady S. Refaat, Tingwen Huang and Fakhreddine S. Oueslati
Additional contact information
Mohamed Trabelsi: Electronics and Communications Engineering Department, Kuwait College of Science and Technology, Doha P.O. Box 27235, Kuwait
Mohamed Massaoudi: Department of Electrical and Computer Engineering, Texas A&M University at Qatar, Doha 23874, Qatar
Ines Chihi: Department of Engineering, Faculty of Science, Technology and Medicine, University of Luxembourg, L-135 Luxembourg, Luxembourg
Lilia Sidhom: LAPER, Faculty of Sciences of Tunis, El Manar University, Tunis 1068, Tunisia
Shady S. Refaat: Engineering, and Computer Science, University of Hertfordshire, Hatfield AL10 9AB, UK
Tingwen Huang: Arts and Sciences Department, Texas A&M University at Qatar, Doha 23874, Qatar
Fakhreddine S. Oueslati: Laboratoire Matériaux, Molécules, et Applications (LMMA) à l’IPEST, Carthage University, Tunis 1054, Tunisia

Energies, 2022, vol. 15, issue 23, 1-14

Abstract: The integration of Photovoltaic (PV) systems requires the implementation of potential PV power forecasting techniques to deal with the high intermittency of weather parameters. In the PV power prediction process, Genetic Programming (GP) based on the Symbolic Regression (SR) model has a widespread deployment since it provides an effective solution for nonlinear problems. However, during the training process, SR models might miss optimal solutions due to the large search space for the leaf generations. This paper proposes a novel hybrid model that combines SR and Deep Multi-Layer Perceptron (MLP) for one-month-ahead PV power forecasting. A case study analysis using a real Australian weather dataset was conducted, where the employed input features were the solar irradiation and the historical PV power data. The main contribution of the proposed hybrid SR-MLP algorithm are as follows: (1) The training speed was significantly improved by eliminating unimportant inputs during the feature selection process performed by the Extreme Boosting and Elastic Net techniques; (2) The hyperparameters were preserved throughout the training and testing phases; (3) The proposed hybrid model made use of a reduced number of layers and neurons while guaranteeing a high forecasting accuracy; (4) The number of iterations due to the use of SR was reduced. The presented simulation results demonstrate the higher forecasting accuracy (reductions of more than 20% for Root Mean Square Error (RMSE) and 30 % for Mean Absolute Error (MAE) in addition to an improvement in the R 2 evaluation metric) and robustness (preventing the SR from converging to local minima with the help of the ANN branch) of the proposed SR-MLP model as compared to individual SR and MLP models.

Keywords: hybrid model; genetic algorithm; PV power forecasting; symbolic regression; deep multi-layer perceptron; MLP (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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