elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Monitoring of Mirror and Sensor Soiling with TraCS for Improved Quality of Ground based Irradiance Measurements

Wolfertstetter, Fabian und Pottler, Klaus und Geuder, Norbert und Affolter, Roman und Merrouni, Ahmed und Mezrhab, Ahmed und Pitz-Paal, Robert (2014) Monitoring of Mirror and Sensor Soiling with TraCS for Improved Quality of Ground based Irradiance Measurements. Energy Procedia (49), Seiten 2422-2432. Elsevier. doi: 10.1016/j.egypro.2014.03.257. ISSN 1876-6102.

[img] PDF (Monitoring of Soiling with TraCS)
1MB

Offizielle URL: http://www.sciencedirect.com/science/article/pii/S1876610214007115

Kurzfassung

Meteorological stations for solar irradiance measurements are mainly utilized for resource assessment of possible sites for future solar power plants and for thermal efficiency calculation and control of operating power plants. These stations consist of a solar tracker, two pyranometers and a pyrheliometer (MHP) for irradiance measurements. The accuracy of the MHP instrumentation is usually specified to be better than 2% if cleaned on a daily basis. However, soiling frequently exceeds other error influences significantly, reducing irradiance values and accuracy. Due to the high sensitivity to soiling shown by pyrheliometers, especially DNI measurements are affected. Reductions of measured DNI values exceeding 25% in only a few weeks are not unusual. In order to improve this situation, the soiling level of each individual sensor can be determined by following a special sequence of sensor cleaning and brief breaks combined with a close examination of the sensor responses. This allows for an approximate post processing correction of the irradiance data measured since the last cleaning (if recent). The corrections applied are cross- checked by means of an improved version of the TraCS asset. It can be used to control the sensor soiling correction procedure. The TraCS's improvement consists in rotating the mirror within its plane with the pyrheliometer thus scanning its surface instead of just viewing the same small spot on the mirror. Hence, a better accuracy of the mirror soiling level is achieved by deriving more reliable average values. Finally, the results of an examination of sensor soiling rates at several meteorological stations set up in the MENA region and cleaned following the described protocol is presented. This gives an idea about the range of regional differences in soiling rates to be expected in the North African region.

elib-URL des Eintrags:https://elib.dlr.de/91768/
Dokumentart:Zeitschriftenbeitrag
Titel:Monitoring of Mirror and Sensor Soiling with TraCS for Improved Quality of Ground based Irradiance Measurements
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Wolfertstetter, Fabianfabian.wolfertstetter (at) dlr.dehttps://orcid.org/0000-0003-4323-8433NICHT SPEZIFIZIERT
Pottler, Klausk.pottler (at) cspservices.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Geuder, Norbertn.geuder (at) cspservices.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Affolter, RomanCSP ServicesNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Merrouni, AhmedUniversite Mohammed I OujdaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Mezrhab, AhmedUniversite Mohammed Premier OujdaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Pitz-Paal, Robertrobert.pitz-paal (at) dlr.dehttps://orcid.org/0000-0002-3542-3391NICHT SPEZIFIZIERT
Datum:2014
Erschienen in:Energy Procedia
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
DOI:10.1016/j.egypro.2014.03.257
Seitenbereich:Seiten 2422-2432
Verlag:Elsevier
Name der Reihe:El Sevier
ISSN:1876-6102
Status:veröffentlicht
Stichwörter:DNI; soiling; meteorological data postprocessing; energy meteorology; cleaning sequence; meteorological measurements
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:Konzentrierende Solarsysteme (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Qualifizierung (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Solarforschung > Qualifizierung
Hinterlegt von: Kruschinski, Anja
Hinterlegt am:11 Nov 2014 13:29
Letzte Änderung:06 Nov 2023 14:54

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.