A new method to estimate the uncertainty of AEP of offshore wind power plants applied to Horns Rev 1

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Abstract

The present article proposes a framework for validation of stationary wake models that wind developers can use to predict the energy production of a wind power plant more accurately. The application of this framework provides a new way to quantify the uncertainty of annual energy production predictions. Additionally this methodology enables the fair comparison of different wake models. Furthermore the methodology enables the estimation of how much information can be obtain from a measurement dataset to quantify model inadequacy. In the present work the proposed framework is applied to the Horns Rev 1 offshore wind power plant. The model uncertainty of a modified N. O. Jensen wake model under uncertain undisturbed flow conditions was studied. Evidence of model inadequacy is found in terms of a bias in the predicted AEP distribution. It was found that the use of the official power curve compensates the errors in the wake model, as a consequence a larger uncertainty of the overall model is predicted. Furthermore a study of wake model benchmarking based on filtered flow cases indicates that measurement uncertainty in the wind speed and wind direction is large enough to obtain any evidence of model inaccuracy even for the simplest wake models.
Original languageEnglish
Title of host publicationScientific Proceedings. EWEA Annual Conference and Exhibition 2015
PublisherEuropean Wind Energy Association (EWEA)
Publication date2015
Pages161-165
ISBN (Print)9782930670003
Publication statusPublished - 2015
EventEWEA Annual Conference and Exhibition 2015 - Paris, France
Duration: 17 Nov 201520 Nov 2015

Conference

ConferenceEWEA Annual Conference and Exhibition 2015
CountryFrance
CityParis
Period17/11/201520/11/2015

Keywords

  • Uncertainty quantification
  • Offshore wind power plant
  • Power predictions
  • Wake model
  • SCADA data reanalysis

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