Enhancing Wind Farm Generation Modeling with Turbulence Intensity and Time-Varying Air Density for Large-Scale Energy System Studies

Ernestas Simutis*, Juan P. Murcia, Matti J. Koivisto

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

Accurate modeling of existing and future renewable generation is essential for planning the European energy system. Current models often neglect or oversimplify the physics of wind farm generation. While detailed modeling is possible, it is impractical for representing the entire fleet of thousands of wind power plants.
This study addresses these challenges by implementing a generic wind farm surrogate model within Correlations in Renewable Energy Sources (CorRES) tool, capable of simulating all existing wind farms in Europe over a 40-year period with hourly resolution. The model incorporates a single turbine power curve that accounts for turbulence intensity (TI) and time varying air density, alongside other relevant parameters such as specific power and rotor diameter. The wind farm power curve and wake losses are modeled to also depend on turbulence intensity and air density, as well as other key parameters like plant installation density and the number of turbines in a farm.
A comparative analysis is conducted between previous generation simulations of CorRES and those incorporating time-varying air density and fixed turbulence intensity, differentiating between offshore and onshore wind farms. The results demonstrate that incorporating time-varying air density enhances the capture of seasonal variability, which is crucial for energy system models to effectively meet electricity demand for heating and cooling with renewable energy sources.
Original languageEnglish
Title of host publicationProceedings of 23rd Wind & Solar Integration Workshop
Number of pages7
Publication date2024
Publication statusPublished - 2024
Event23rd Wind & Solar Integration Workshop - Helsinki, Finland
Duration: 8 Oct 202411 Oct 2024

Workshop

Workshop23rd Wind & Solar Integration Workshop
Country/TerritoryFinland
CityHelsinki
Period08/10/202411/10/2024

Bibliographical note

This paper was presented at the 23rd Wind & Solar Integration Workshop 2024 and published in the workshop’s proceedings

Keywords

  • Wind wakes
  • Energy system
  • Turbulence intensity
  • Air density

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