Wind-farm layout optimisation using a hybrid Jensen–LES approach

Given a wind farm with known dimensions and number of wind turbines, we try to find the optimum positioning of wind turbines that maximises wind-farm energy production. In practice, given that optimisation has to be performed for many wind directions, and taking into account the yearly wind dist...

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Main Authors: V. S. Bokharaie, P. Bauweraerts, J. Meyers
Format: Article
Language:English
Published: Copernicus Publications 2016-12-01
Series:Wind Energy Science
Online Access:https://www.wind-energ-sci.net/1/311/2016/wes-1-311-2016.pdf
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author V. S. Bokharaie
P. Bauweraerts
J. Meyers
author_facet V. S. Bokharaie
P. Bauweraerts
J. Meyers
author_sort V. S. Bokharaie
collection DOAJ
description Given a wind farm with known dimensions and number of wind turbines, we try to find the optimum positioning of wind turbines that maximises wind-farm energy production. In practice, given that optimisation has to be performed for many wind directions, and taking into account the yearly wind distribution, such an optimisation is computationally only feasible using fast engineering wake models such as the Jensen model. These models are known to have accuracy issues, in particular since their representation of wake interaction is very simple. In the present work, we propose an optimisation approach that is based on a hybrid combination of large-eddy simulation (LES) and the Jensen model; in this approach, optimisation is mainly performed using the Jensen model, and LES is used at a few points only during optimisation for online tuning of the wake-expansion coefficient in the Jensen model, as well as for validation of the results. An optimisation case study is considered, in which the placement of 30 turbines in a 4 km by 3 km rectangular domain is optimised in a neutral atmospheric boundary layer. Optimisation for both a single wind direction and multiple wind directions is discussed.
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spelling doaj.art-186fcc1a53e245eca4d410f087cb65de2022-12-21T23:54:36ZengCopernicus PublicationsWind Energy Science2366-74432366-74512016-12-01131132510.5194/wes-1-311-2016Wind-farm layout optimisation using a hybrid Jensen–LES approachV. S. Bokharaie0P. Bauweraerts1J. Meyers2KU Leuven, Department of Mechanical Engineering, Celestijnenlaan 300A, B3001 Leuven, BelgiumKU Leuven, Department of Mechanical Engineering, Celestijnenlaan 300A, B3001 Leuven, BelgiumKU Leuven, Department of Mechanical Engineering, Celestijnenlaan 300A, B3001 Leuven, BelgiumGiven a wind farm with known dimensions and number of wind turbines, we try to find the optimum positioning of wind turbines that maximises wind-farm energy production. In practice, given that optimisation has to be performed for many wind directions, and taking into account the yearly wind distribution, such an optimisation is computationally only feasible using fast engineering wake models such as the Jensen model. These models are known to have accuracy issues, in particular since their representation of wake interaction is very simple. In the present work, we propose an optimisation approach that is based on a hybrid combination of large-eddy simulation (LES) and the Jensen model; in this approach, optimisation is mainly performed using the Jensen model, and LES is used at a few points only during optimisation for online tuning of the wake-expansion coefficient in the Jensen model, as well as for validation of the results. An optimisation case study is considered, in which the placement of 30 turbines in a 4 km by 3 km rectangular domain is optimised in a neutral atmospheric boundary layer. Optimisation for both a single wind direction and multiple wind directions is discussed.https://www.wind-energ-sci.net/1/311/2016/wes-1-311-2016.pdf
spellingShingle V. S. Bokharaie
P. Bauweraerts
J. Meyers
Wind-farm layout optimisation using a hybrid Jensen–LES approach
Wind Energy Science
title Wind-farm layout optimisation using a hybrid Jensen–LES approach
title_full Wind-farm layout optimisation using a hybrid Jensen–LES approach
title_fullStr Wind-farm layout optimisation using a hybrid Jensen–LES approach
title_full_unstemmed Wind-farm layout optimisation using a hybrid Jensen–LES approach
title_short Wind-farm layout optimisation using a hybrid Jensen–LES approach
title_sort wind farm layout optimisation using a hybrid jensen les approach
url https://www.wind-energ-sci.net/1/311/2016/wes-1-311-2016.pdf
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