Comparison of satellite-retrieved high-resolution solar radiation datasets for South Africa
| Autor: | Ana Maria Gracia Amillo, Lucky Ntsangwane, Jörg Trentmann, Thomas Huld |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
beam normal irradiance
lcsh:GE1-350 General Computer Science 020209 energy global horizontal irradiance Photovoltaic system Irradiance High resolution Terrain 02 engineering and technology Radiation General Energy lcsh:Energy conservation Solar Resource satellite retrieved irradiance 0202 electrical engineering electronic engineering information engineering Environmental science Satellite lcsh:TJ163.26-163.5 ground stations Satellite retrieved irradiance Beam (structure) lcsh:Environmental sciences Remote sensing |
| Zdroj: | Journal of Energy in Southern Africa, Vol 29, Iss 2, Pp 63-76 (2018) Journal of Energy in Southern Africa, Volume: 29, Issue: 2, Pages: 63-76, Published: MAY 2018 |
| ISSN: | 2413-3051 |
| Popis: | This study compares the performance of two satellite-based solar radiation methodologies for estimating the solar resource available in South Africa. Data from thirteen stations distributed in six climatic regions were considered. More than one year of hourly values of global horizontal and beam normal irradiance were examined in the validation of the satellite-retrieved estimates at every location. The best satellite method resulted in an overall relative mean bias of 1.41% for the global horizontal irradiance corresponding to almost 3 Wm-2 and exhibited a relative mean bias of 2.85% for the beam normal irradiance estimation (about 7 Wm-2). This satellite-based method was implemented into a geographical information system module, which contained high-resolution terrain data and allowed the effect of the surrounding topography on the estimation of the available solar resource to be considered. These estimates can, therefore, be used as input data for further analysis or applications. As an example, maps of the potential output that could be expected in South Africa from photovoltaic systems were created. |
| Databáze: | OpenAIRE |
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