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

García, Miguel; Marroyo, Luis; Lorenzo Pigueiras, Eduardo; Marcos Álvarez, Javier y 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.

Descripción

Título: Solar irradiation and PV module temperature dispersion at a large-scale PV plant
Autor/es:
  • García, Miguel
  • Marroyo, Luis
  • Lorenzo Pigueiras, Eduardo
  • Marcos Álvarez, Javier
  • Pérez, Miguel
Tipo de Documento: Artículo
Título de Revista/Publicación: Progress in Photovoltaics
Fecha: Octubre 2015
Volumen: 23
Materias:
Palabras Clave Informales: Dispersion; irradiation; temperature; large PV plants
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Electrónica Física
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Proyectos asociados

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

Más información

ID de Registro: 43620
Identificador DC: http://oa.upm.es/43620/
Identificador OAI: oai:oa.upm.es:43620
Identificador DOI: 10.1002/pip.2518
URL Oficial: http://onlinelibrary.wiley.com/doi/10.1002/pip.2518/abstract
Depositado por: Memoria Investigacion
Depositado el: 25 Oct 2016 17:09
Ultima Modificación: 25 Oct 2016 17:09
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