Analysis and synthesis of the variability of irradiance and PV power time series with the wavelet transform

Perpiñan Lamigueiro, Oscar and Lorenzo Pigueiras, Eduardo (2010). Analysis and synthesis of the variability of irradiance and PV power time series with the wavelet transform. "Solar Energy" ; ISSN 0038-092X. https://doi.org/10.1016/j.solener.2010.08.013.

Description

Title: Analysis and synthesis of the variability of irradiance and PV power time series with the wavelet transform
Author/s:
  • Perpiñan Lamigueiro, Oscar
  • Lorenzo Pigueiras, Eduardo
Item Type: Article
Título de Revista/Publicación: Solar Energy
Date: 10 November 2010
ISSN: 0038-092X
Subjects:
Freetext Keywords: Irradiance fluctuations; Power fluctuations; Wavelet analysis; Wavestrapping; Nonstationary; Long memory process
Faculty: E.U.I.T. Industrial (UPM)
Department: Ingeniería Eléctrica [hasta 2014]
Creative Commons Licenses: Recognition - Non commercial - Share

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Abstract

The irradiance fluctuations and the subsequent variability of the power output of a PV system are analysed with some mathematical tools based on the wavelet transform. It can be shown that the irradiance and power time series are nonstationary process whose behaviour resembles that of a long memory process. Besides, the long memory spectral exponent α is a useful indicator of the fluctuation level of a irradiance time series. On the other side, a time series of global irradiance on the horizontal plane can be simulated by means of the wavestrapping technique on the clearness index and the fluctuation behaviour of this simulated time series correctly resembles the original series. Moreover, a time series of global irradiance on the inclined plane can be simulated with the wavestrapping procedure applied over a signal previously detrended by a partial reconstruction with a wavelet multiresolution analysis, and, once again, the fluctuation behaviour of this simulated time series is correct. This procedure is a suitable tool for the simulation of irradiance incident over a group of distant PV plants. Finally, a wavelet variance analysis and the long memory spectral exponent show that a PV plant behaves as a low-pass filter.

More information

Item ID: 4953
DC Identifier: http://oa.upm.es/4953/
OAI Identifier: oai:oa.upm.es:4953
DOI: 10.1016/j.solener.2010.08.013
Official URL: http://www.sciencedirect.com/science/journal/0038092X
Deposited by: Oscar Perpiñán Lamigueiro
Deposited on: 01 Dec 2010 10:09
Last Modified: 20 Apr 2016 13:57
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