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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Solar Energy
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1349889
This article is part of the Research Topic The Use of Optimization Techniques in Solar Energy View all 3 articles

Assessment Of The Diffuse-Fraction Estimation In China Using The Binary BRL Model

Provisionally accepted
Xingguo Yu Xingguo Yu 1,2wei chong wei chong 3*jasmin niguidula jasmin niguidula 1
  • 1 Technological University of the Philippines, Manila, Philippines
  • 2 Anhui Technical College of Mechanical and Electrical Engineering, Wuhan, Anhui, China
  • 3 National Climate Center, China Meteorological Administration, Beijing, China

The final, formatted version of the article will be published soon.

    Diffuse and direct radiation distribution are crucial for the design and construction of photovoltaic power systems. However, due to the high cost and relatively complex maintenance, there are relatively few observation stations for diffuse and direct radiation in China, while there are numerous stations for total radiation, making it easier to obtain total radiation data. In this study, based on the Boland Ridley Laurent (BRL) model, the atmospheric radiation transfer theory and Taylor series expansion were utilized to establish a BRL model relating the diffuse fraction to the clear-sky index and atmospheric optical thickness. Training datasets comprising radiation data at three different time scales, namely minute, 10-minute, and hourly, were used to obtain the mathematical model parameters for the diffuse fraction with respect to the clearsky index and atmospheric optical thickness through nonlinear fitting, resulting in binary BRL model. Validation datasets were created using solar radiation data from observation stations in regions with distinct climatic characteristics. The BRL model was employed to calculate the diffuse fraction, statistical analyses were conducted on the correlation coefficient, mean bias deviation (MBD), root mean squared deviation(RMSD), and t-statistic between measured and computed diffuse fraction values. The results show that the diffuse fraction values computed by the BRL model exhibited correlation coefficients above 0.8, MBD within ±0.2, RMSD within 0.25, and minimum t-statistic as low as 0.1074. This study provides a new direction for constructing diffuse radiation model, and further research should incorporate more extensive radiation data to investigate the model's applicability across different regions.

    Keywords: Atmospheric radiation, Diffuse fraction, BRL model, Clearness index, Air mass

    Received: 05 Dec 2023; Accepted: 29 Nov 2024.

    Copyright: © 2024 Yu, chong and niguidula. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: wei chong, National Climate Center, China Meteorological Administration, Beijing, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.