Solar irradiation and PV module temperature dispersion at a large-scale PV plant

García, Miguel and Marroyo, Luis and Lorenzo Pigueiras, Eduardo and Marcos Álvarez, Javier and Pérez, Miguel (2015). Solar irradiation and PV module temperature dispersion at a large-scale PV plant. "Progress in Photovoltaics", v. 23 (n. 10); pp. 1381-1389. ISSN 1062-7995. https://doi.org/10.1002/pip.2518.

Description

Title: Solar irradiation and PV module temperature dispersion at a large-scale PV plant
Author/s:
  • García, Miguel
  • Marroyo, Luis
  • Lorenzo Pigueiras, Eduardo
  • Marcos Álvarez, Javier
  • Pérez, Miguel
Item Type: Article
Título de Revista/Publicación: Progress in Photovoltaics
Date: October 2015
ISSN: 1062-7995
Volume: 23
Subjects:
Freetext Keywords: Dispersion; irradiation; temperature; large PV plants
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (2MB) | Preview

Abstract

When evaluating the performance of a photovoltaic (PV) system, it is extremely important to correctly measure the plant operating conditions: incident irradiation and cell temperature. At large-size PV plants, the possible dispersion of the plant operating conditions may affect the representativeness of the values measured at one single point. The available literature contains many observations on irradiance dispersion (typically associated to high temporal resolution experiments) and its effects on the PV power output (unexpected power transients, power fluctuations, etc.). However no studies have been made on the long-term energy-related effects of geographic dispersion of solar irradiation, which could affect, for example, to the uncertainty in determining energy performance indexes like PR. This paper analyses the geographical dispersion in the PV operating conditions observed at low temporal resolutions (day, month and year) at two PV plants located, respectively, in the south of Portugal and the north of Spain. It shows that daily irradiation deviations are significantly higher than is commonly supposed. Furthermore, once the measurement points are a certain distance apart (a few hundred metres), the deviations in irradiation appear to be independent of distance. This could help to determine how many irradiance sensors to install in order to reduce uncertainty. Daily mean temperature differences between different points at a large-scale PV plant range from 1 to 7?K and are not related to the distance between measurement points.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7308468PVCROPSUNIVERSIDAD POLITECNICA DE MADRIDPhotoVoltaic Cost reduction, Reliability, Operational performance, Prediction and Simulation

More information

Item ID: 43620
DC Identifier: http://oa.upm.es/43620/
OAI Identifier: oai:oa.upm.es:43620
DOI: 10.1002/pip.2518
Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pip.2518/abstract
Deposited by: Memoria Investigacion
Deposited on: 25 Oct 2016 17:09
Last Modified: 25 Oct 2016 17:09
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM