Academic Journal

Satellite-derived solar radiation for intra-hour and intra-day applications: Biases and uncertainties by season and altitude

التفاصيل البيبلوغرافية
العنوان: Satellite-derived solar radiation for intra-hour and intra-day applications: Biases and uncertainties by season and altitude
المؤلفون: Carpentieri, Alberto, Folini, Doris, Wild, Martin, Vuilleumier, Laurent, Meyer, Angela
المصدر: Solar Energy, 255
بيانات النشر: Elsevier
سنة النشر: 2023
المجموعة: ETH Zürich Research Collection
مصطلحات موضوعية: Surface solar radiation, Meteosat satellite and SwissMetNet pyranometers, Bias and uncertainties assessment of global horizontal irradiance, Heliosat SARAH and HelioMont retrievals, Season and altitude dependence, Intra-hour and intra-day forecasting
الوصف: Regional to European scale intra-day forecasts of solar resources and photovoltaic (PV) power generation are of key relevance for operators of solar plants and power grids, as well as power traders, who seek to optimize revenues and maintain grid stability by matching power supply and demand. Our study addresses a key prerequisite for such forecasts: the accuracy of intra-hour and intra-day surface solar radiation (SSR) estimates of the HelioMont Meteosat product, a state of the art satellite product particularly suited for the Alpine region. A second satellite product, SARAH-2, as well as longer time scales, are also examined for comparison. The satellite SSR estimates are analyzed based on 136 ground stations across altitudes from 200 m to 3570 m in Switzerland in 2018. In peak daytime periods, the instantaneous satellite SSR deviates from the ground-measured SSR by a mean absolute deviation (MAD) of 110.4 and 99.6 W/m2 for SARAH-2 and HelioMont, respectively. For the daytime SSR, the instantaneous, hourly, and daily-mean MADs amount to 91.7, 81.1, 50.8, and 82.5, 66.7, 42.9 W/m2 for SARAH-2 and HelioMont, respectively. SARAH-2 drastically underestimates instantaneous SSR in winter at altitudes above 1000 m, possibly due to snow cover. HelioMont performs better in this respect, but the remaining substantial, spatially and temporally heterogeneous biases we identify pose a challenge with regard to the use of HelioMont for accurate intra-day PV estimates and forecasts. ; ISSN:0038-092X ; ISSN:1471-1257
نوع الوثيقة: article in journal/newspaper
وصف الملف: application/application/pdf
اللغة: English
Relation: info:eu-repo/semantics/altIdentifier/wos/000972285400001; http://hdl.handle.net/20.500.11850/607003
DOI: 10.3929/ethz-b-000607003
الاتاحة: https://hdl.handle.net/20.500.11850/607003
https://doi.org/10.3929/ethz-b-000607003
Rights: info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ ; Creative Commons Attribution 4.0 International
رقم الانضمام: edsbas.49AC5D6E
قاعدة البيانات: BASE
الوصف
DOI:10.3929/ethz-b-000607003