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A visual-inertial system to determine accurate solar insolation and optimal PV panel orientation at a point and over an area

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  • Singh, Sarvesh Kumar
  • Lohani, Bharat
  • Arora, Lavish
  • Choudhary, Devendra
  • Nagarajan, Balasubramanian

Abstract

To provide the best return on investments it is often required to assess the suitability of a site for installation of solar photovoltaic panel and quantify shading and atmospheric losses. The shading analysis is generally done using light detection and ranging or 3D geographic information system-based approaches which are cost-effective only for large-scale analysis. In several cases, particularly in developing countries, LiDAR data or 3D GIS are not available. In this study, a terrestrial image-based system is developed to accurately estimate solar insolation at a place. The positions of obstructions obtained using captured images are integrated with sun position model to provide solar insolation and optimal solar panel orientation. To further refine the result, the effect of sky conditions on the obtained solar insolation is also considered at monthly and yearly scale. About 40% reduction in solar insolation is observed due to shading which rose to 51% when the atmospheric conditions were included in the analysis of the selected sites. Further, an approach to estimate solar insolation over an area using some discrete point location is also presented and demonstrated. Results from 30 sites show that the obtained error in insolation estimate over an area is within 4%.

Suggested Citation

  • Singh, Sarvesh Kumar & Lohani, Bharat & Arora, Lavish & Choudhary, Devendra & Nagarajan, Balasubramanian, 2020. "A visual-inertial system to determine accurate solar insolation and optimal PV panel orientation at a point and over an area," Renewable Energy, Elsevier, vol. 154(C), pages 223-238.
    • Handle: RePEc:eee:renene:v:154:y:2020:i:c:p:223-238
    DOI: 10.1016/j.renene.2020.02.107
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    References listed on IDEAS

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    1. Oh, Myeongchan & Kim, Jin-Young & Kim, Boyoung & Yun, Chang-Yeol & Kim, Chang Ki & Kang, Yong-Heack & Kim, Hyun-Goo, 2021. "Tolerance angle concept and formula for practical optimal orientation of photovoltaic panels," Renewable Energy, Elsevier, vol. 167(C), pages 384-394.
    2. Xu, Luting & Ding, Pei & Zhang, Yan & Huang, Yijing & Li, Jimei & Ma, Ruihua, 2024. "Sensitivity analysis of the shading effects from obstructions at different positions on solar photovoltaic panels," Energy, Elsevier, vol. 290(C).
    3. Shaban R. S. Aldhshan & Khairul Nizam Abdul Maulud & Wan Shafrina Wan Mohd Jaafar & Othman A. Karim & Biswajeet Pradhan, 2021. "Energy Consumption and Spatial Assessment of Renewable Energy Penetration and Building Energy Efficiency in Malaysia: A Review," Sustainability, MDPI, vol. 13(16), pages 1-26, August.

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