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Development of All-Sky Imager quality control methods and their evaluation in Eye2Sky nowcasting

Goerlitz, Arne (2025) Development of All-Sky Imager quality control methods and their evaluation in Eye2Sky nowcasting. Masterarbeit, Carl von Ossietzky Universität Oldenburg.

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Kurzfassung

Accurate prediction of the energy production of photovoltaic systems requires precise weather forecasts of solar irradiance. Numerical weather prediction models and satellite-based forecast methods provide solar irradiance forecasts only with limited temporal and spatial resolution. All-sky imager systems can provide solar irradiance forecasts with high resolutions in the order of metres and minutes. The focus of this work is on the all-sky imager network Eye2Sky, a camera network located in the north-west of Germany, whose topology is unique due to its size and camera density. This work addresses the question of how errors of all-sky imagers, e.g. soiling or interfering objects, do affect the interim and final results of the solar irradiance forecast. The physics-based forecast algorithm WobaS was the focus of this analysis. More precisely, the effect of errors on the cloud masking process, on the cloud base height estimation, as well as on the resulting irradiance maps of WobaS were analysed. Based on the findings of this analysis, methods for the detection and prevention of errors have been developed and validated. Finally, recommendations are given for the operation of all-sky imager networks with regard to quality control.

elib-URL des Eintrags:https://elib.dlr.de/215798/
Dokumentart:Hochschulschrift (Masterarbeit)
Titel:Development of All-Sky Imager quality control methods and their evaluation in Eye2Sky nowcasting
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Goerlitz, Arnearne.goerlitz (at) dlr.dehttps://orcid.org/0009-0000-5967-6345191885375
DLR-Supervisor:
BeitragsartDLR-SupervisorInstitution oder E-Mail-AdresseDLR-Supervisor-ORCID-iD
Thesis advisorAgert, CarstenCarsten.Agert (at) dlr.dehttps://orcid.org/0000-0003-4733-5257
Thesis advisorStührenberg, JonasJonas.Stuehrenberg (at) dlr.deNICHT SPEZIFIZIERT
Datum:4 August 2025
Open Access:Ja
Seitenanzahl:101
Status:veröffentlicht
Stichwörter:all-sky imager, quality control, solar irradiance, photovoltaic
Institution:Carl von Ossietzky Universität Oldenburg
Abteilung:Fakultät V - Mathematik und Naturwissenschaften
HGF - Forschungsbereich:Energie
HGF - Programm:Energiesystemdesign
HGF - Programmthema:Energiesystemtransformation
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SY - Energiesystemtechnologie und -analyse
DLR - Teilgebiet (Projekt, Vorhaben):E - Systemanalyse und Technologiebewertung
Standort: Oldenburg
Institute & Einrichtungen:Institut für Vernetzte Energiesysteme > Energiesystemanalyse, OL
Hinterlegt von: Goerlitz, Arne
Hinterlegt am:15 Sep 2025 12:29
Letzte Änderung:15 Sep 2025 12:29

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