Theoretical derivation of wind power probability distribution function and applications

Abdüsselam Altunkaynak, Tarkan Erdik, İsmail Dabanlı and Zekai Şen

Applied Energy, 2012, vol. 92, issue C, 809-814

Abstract: The instantaneous wind power contained in the air current is directly proportional with the cube of the wind speed. In practice, there is a record of wind speeds in the form of a time series. It is, therefore, necessary to develop a formulation that takes into consideration the statistical parameters of such a time series. The purpose of this paper is to derive the general wind power formulation in terms of the statistical parameters by using the perturbation theory, which leads to a general formulation of the wind power expectation and other statistical parameter expressions such as the standard deviation and the coefficient of variation. The formulation is very general and can be applied specifically for any wind speed probability distribution function. Its application to two-parameter Weibull probability distribution of wind speeds is presented in full detail. It is concluded that provided wind speed is distributed according to a Weibull distribution, the wind power could be derived based on wind speed data. It is possible to determine wind power at any desired risk level, however, in practical studies most often 5% or 10% risk levels are preferred and the necessary simple procedure is presented for this purpose in this paper.

Keywords: Perturbation; Power; Statistical parameter; Weibull distribution; Wind (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (16)

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DOI: 10.1016/j.apenergy.2011.08.038

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