Temporal and Spatial Variations of the Solar Radiation Observed in Singapore
Meteorological phenomena, such as fast moving clouds, cause rapid changes in the terrestrial direct beam radiation. This introduces transients in both the temporal and spatial measurements of global horizontal radiation. These transients in radiation affect the performance of solar energy conversion...
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sg-ntu-dr.10356-818542020-05-28T07:19:22Z Temporal and Spatial Variations of the Solar Radiation Observed in Singapore Jayaraman, Ramkumar Maskell, Douglas Leslie School of Computer Engineering PV variability; temporal variations; spatial variations; transients; high-resolution radiation measurements Meteorological phenomena, such as fast moving clouds, cause rapid changes in the terrestrial direct beam radiation. This introduces transients in both the temporal and spatial measurements of global horizontal radiation. These transients in radiation affect the performance of solar energy conversion systems (PV, CPV systems and solar thermal applications) and cause their output power to vary widely. Thus, to properly understand the dynamic fluctuations observed in the output energies of large solar farms and PV arrays, it becomes necessary to perform a high-resolution temporal and spatial measurement of solar radiation. It turns out that performing such high-resolution measurements is often cost-prohibitive. Studies were conducted to understand and quantify the temporal and the spatial variations of direct beam, diffused and global horizontal radiation. These studies were based on the radiation data collected at the Nanyang Technological University, Singapore at a time interval of 1 s. It was inferred from these studies that the temporal variations in the instantaneous diffuse radiation are minimum and there was little spatial variations seen across distances of 500 m. The transients observed in global horizontal radiation are predominantly restricted to the changes occurring in the direct beam component of the solar radiation. Based on these inferences, a simple and costeffective method is proposed that would permit accurate large scale localised high-resolution measurements of individual components of the solar radiation. NRF (Natl Research Foundation, S’pore) Published version 2016-01-19T06:54:04Z 2019-12-06T14:41:37Z 2016-01-19T06:54:04Z 2019-12-06T14:41:37Z 2012 Journal Article Jayaraman, R., & Maskell, D. L. (2012). Temporal and Spatial Variations of the Solar Radiation Observed in Singapore. Energy Procedia, 25, 108-117. 1876-6102 https://hdl.handle.net/10356/81854 http://hdl.handle.net/10220/39708 10.1016/j.egypro.2012.07.015 en Energy Procedia © 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Solar Energy Research Institute of Singapore (SERIS) – National University of Singapore. The PV Asia Pacific Conference 2011 was jointly organised by SERIS and the Asian Photovoltaic Industry Association (APVIA). Open access under CC BY-NC-ND license. 10 p. application/pdf |
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PV variability; temporal variations; spatial variations; transients; high-resolution radiation measurements Jayaraman, Ramkumar Maskell, Douglas Leslie Temporal and Spatial Variations of the Solar Radiation Observed in Singapore |
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Meteorological phenomena, such as fast moving clouds, cause rapid changes in the terrestrial direct beam radiation. This introduces transients in both the temporal and spatial measurements of global horizontal radiation. These transients in radiation affect the performance of solar energy conversion systems (PV, CPV systems and solar thermal applications) and cause their output power to vary widely. Thus, to properly understand the dynamic fluctuations observed in the output energies of large solar farms and PV arrays, it becomes necessary to perform a high-resolution temporal and spatial measurement of solar radiation. It turns out that performing such high-resolution measurements is often cost-prohibitive. Studies were conducted to understand and quantify the temporal and the spatial variations of direct beam, diffused and global horizontal radiation. These studies were based on the radiation data collected at the Nanyang Technological University, Singapore at a time interval of 1 s. It was inferred from these studies that the temporal variations in the instantaneous diffuse radiation are minimum and there was little spatial variations seen across distances of 500 m. The transients observed in global horizontal radiation are predominantly restricted to the changes occurring in the direct beam component of the solar radiation. Based on these inferences, a simple and costeffective method is proposed that would permit accurate large scale localised high-resolution measurements of individual components of the solar radiation. |
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School of Computer Engineering |
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School of Computer Engineering Jayaraman, Ramkumar Maskell, Douglas Leslie |
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Article |
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Jayaraman, Ramkumar Maskell, Douglas Leslie |
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Jayaraman, Ramkumar |
title |
Temporal and Spatial Variations of the Solar Radiation Observed in Singapore |
title_short |
Temporal and Spatial Variations of the Solar Radiation Observed in Singapore |
title_full |
Temporal and Spatial Variations of the Solar Radiation Observed in Singapore |
title_fullStr |
Temporal and Spatial Variations of the Solar Radiation Observed in Singapore |
title_full_unstemmed |
Temporal and Spatial Variations of the Solar Radiation Observed in Singapore |
title_sort |
temporal and spatial variations of the solar radiation observed in singapore |
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2016 |
url |
https://hdl.handle.net/10356/81854 http://hdl.handle.net/10220/39708 |
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1681059696933339136 |