Enhancing Building-Integrated Photovoltaic Power Forecasting with a Hybrid Conditional Generative Adversarial Network Framework

Dong Ha Choi (), Wei Li and Albert Y. Zomaya ()
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Dong Ha Choi: School of Computer Science, The Usiversity of Sydney, Sydney, NSW 2006, Australia
Wei Li: School of Computer Science, The Usiversity of Sydney, Sydney, NSW 2006, Australia
Albert Y. Zomaya: School of Computer Science, The Usiversity of Sydney, Sydney, NSW 2006, Australia

Energies, 2024, vol. 17, issue 23, 1-24

Abstract: This paper presents a novel framework that integrates Conditional Generative Adversarial Networks (CGANs) and TimeGAN to generate synthetic Building-Integrated Photovoltaic (BIPV) power data, addressing the challenge of data scarcity in this domain. By incorporating time-related attributes as conditioning information, our method ensures the preservation of chronological order and enhances data fidelity. A tailored learning scheme is implemented to capture the unique characteristics of solar power generation, particularly during sunrise and sunset. Comprehensive evaluations demonstrate the framework’s effectiveness in generating high-quality synthetic data, evidenced by a 79.58% improvement in the discriminative score and a 13.46% improvement in the predictive score compared to TimeGAN. Moreover, integrating the synthetic data into forecasting models resulted in up to 23.56% improvement in mean absolute error (MAE) for BIPV power generation predictions. These results highlight the potential of our framework to enhance prediction accuracy and optimize data utilization in renewable energy applications.

Keywords: BIPV; time series; data augmentation; GAN; Conditional GAN; TimeGAN; forecasting (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: 2024
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