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Validation of Spatially Resolved All Sky Imager Derived DNI Nowcasts

Kuhn, Pascal Moritz and Wilbert, Stefan and Schüler, David and Prahl, Christoph and Haase, Thomas and Ramirez, Lourdes and Zarzalejo, L.F. and Meyer, Angela and Vuilleumier, L. and Blanc, Philippe and Dubrana, Jean and Kazantzidis, A. and Schroedter-Homscheidt, Marion and Hirsch, Tobias and Pitz-Paal, Robert (2017) Validation of Spatially Resolved All Sky Imager Derived DNI Nowcasts. In: AIP Conference Proceedings, 1850, 140014-1-140014-11. Elsevier. 22nd SolarPACES Conference, 11.-14. Okt. 2016, Abu Dhabi, UAE. DOI: 10.1063/1.4984522 ISSN 0094-243X

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Official URL: https://doi.org/10.1063/1.4984522

Abstract

Mainly due to clouds, Direct Normal Irradiance (DNI) displays short-term local variabilities affecting the efficiency of concentrating solar power (CSP) plants. To enable efficient plant operation, DNI nowcasts in high spatial and temporal resolutions for 15 to 30 minutes ahead are required. Ground-based All Sky Imagers (ASI) can be used to detect, track and predict 3D positions of clouds possibly shading the plant. The accuracy and reliability of these ASI-derived DNI nowcasts must be known to allow its application in solar power plants. Within the framework of the European project DNICast, an ASI-based nowcasting system was developed and implemented at the Plataforma Solar de Almería (PSA). Its validation methodology and validation results are presented in this work. The nowcasting system outperforms persistence forecasts for volatile irradiance situations.

Item URL in elib:https://elib.dlr.de/108944/
Document Type:Conference or Workshop Item (Speech, Poster)
Title:Validation of Spatially Resolved All Sky Imager Derived DNI Nowcasts
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kuhn, Pascal MoritzPascal.Kuhn (at) dlr.dehttps://orcid.org/0000-0001-9978-5706
Wilbert, StefanStefan.Wilbert (at) dlr.dehttps://orcid.org/0000-0003-3573-3004
Schüler, Daviddavid.schueler (at) dlr.deUNSPECIFIED
Prahl, Christophchristoph.prahl (at) dlr.dehttps://orcid.org/0000-0002-8596-9050
Haase, Thomassf-qlfUNSPECIFIED
Ramirez, LourdesciematUNSPECIFIED
Zarzalejo, L.F.UNSPECIFIEDUNSPECIFIED
Meyer, AngelaUNSPECIFIEDUNSPECIFIED
Vuilleumier, L.UNSPECIFIEDUNSPECIFIED
Blanc, Philippemines paristechUNSPECIFIED
Dubrana, JeanUNSPECIFIEDUNSPECIFIED
Kazantzidis, A.univ. of patras, patras, grUNSPECIFIED
Schroedter-Homscheidt, Marionmarion.schroedter-homscheidt (at) dlr.dehttps://orcid.org/0000-0002-1854-903X
Hirsch, Tobiastobias.hirsch (at) dlr.dehttps://orcid.org/0000-0003-0063-0128
Pitz-Paal, RobertRobert.Pitz-Paal (at) dlr.dehttps://orcid.org/0000-0002-3542-3391
Date:July 2017
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:1850
DOI :10.1063/1.4984522
Page Range:140014-1-140014-11
Publisher:Elsevier
ISSN:0094-243X
Status:Published
Keywords:Normal irradiance, nowcasting, ASI
Event Title:22nd SolarPACES Conference
Event Location:Abu Dhabi, UAE
Event Type:international Conference
Event Dates:11.-14. Okt. 2016
Organizer:SolarPACES
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Impact of Desert Environment (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualifizierung
Deposited By: Kruschinski, Anja
Deposited On:05 Dec 2016 14:33
Last Modified:31 Jul 2019 20:06

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