Photovoltaic Power Forecasting Approach Based on Ground-Based Cloud Images in Hazy Weather

Zhiying Lu (), Wenpeng Chen, Qin Yan, Xin Li and Bing Nie
Additional contact information
Zhiying Lu: School of Electrical and Information Engineering, Tianjin University, Tianjin 300372, China
Wenpeng Chen: School of Electrical and Information Engineering, Tianjin University, Tianjin 300372, China
Qin Yan: School of Electrical and Information Engineering, Tianjin University, Tianjin 300372, China
Xin Li: School of Electrical and Information Engineering, Tianjin University, Tianjin 300372, China
Bing Nie: School of Electrical and Information Engineering, Tianjin University, Tianjin 300372, China

Sustainability, 2023, vol. 15, issue 23, 1-19

Abstract: Haze constitutes a pivotal meteorological variable with notable implications for photovoltaic power forecasting. The presence of haze is anticipated to lead to a reduction in the output power of photovoltaic plants. Therefore, achieving precise forecasts of photovoltaic power in hazy conditions holds paramount significance. This study introduces a novel approach to forecasting photovoltaic power under haze conditions, leveraging ground-based cloud images. Firstly, the aerosol scattering coefficient is introduced as a pivotal parameter for characterizing photovoltaic power fluctuations influenced by haze. Additionally, other features, such as sky cloud cover, color attributes, light intensity, and texture characteristics, are considered. Subsequently, the Spearman correlation coefficient is applied to calculate the correlation between feature sequences and photovoltaic power. Effective features are then selected as inputs and three models—LSTM, SVM, and XGBoost—are employed for training and performance analysis. After comparing with existing technologies, the predicted results have achieved the best performance. Finally, using actual data, the effectiveness of the aerosol scattering coefficient is confirmed, by exhibiting the highest correlation index, as a pivotal parameter for forecasting photovoltaic output under the influence of haze. The results demonstrate that the aerosol scattering coefficient enhances the forecast accuracy of photovoltaic power in both heavy and light haze conditions by 1.083% and 0.599%, respectively, while exerting minimal influence on clear days. Upon comprehensive evaluation, it is evident that the proposed forecasting method in this study offers substantial advantages for accurately predicting photovoltaic power output in hazy weather scenarios.

Keywords: haze weather; PV power forecasting; ground-based cloud image; feature extraction (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/23/16233/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/23/16233/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:23:p:16233-:d:1286232

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().