Comparison of the effectiveness of analytical wake models for wind farm with constant and variable hub heights

Wang, Longyan, Tan, Andy C.C., Cholette, Michael E., & Gu, YuanTong (2016) Comparison of the effectiveness of analytical wake models for wind farm with constant and variable hub heights. Energy Conversion and Management, 124, pp. 189-202.

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Abstract

Extensive power losses of wind farm have been witnessed due to the wake interactions between wind turbines. By applying analytical wake models which describe the wind speed deficits in the wake quantitatively, the power losses can be regained to a large extent through wind farm layout optimization, and this has been extensively reported in literature. Nevertheless, the effectiveness of the analytical wake models in predicting the wind farm power production have rarely been studied and compared for wind farm with both constant and variable wind turbine hub heights. In this study, the effectiveness of three different analytical wake models (PARK model, Larsen model and B-P model) is thoroughly compared over a wide range of wake properties. After the validation with the observation data from offshore wind farm, CFD simulations are used to verify the effectiveness of the analytical wake models for an onshore wind farm. The results show that when using the PARK model the surface roughness value (z0) must be carefully tuned to achieve good performance in predicting the wind farm power production. For the other two analytical wake models, their effectiveness varies depending on the situation of wind farm (offshore or onshore) and the wind turbine hub heights (constant or variable). It was found that the results of B-P model agree well with the CFD simulations for offshore wind farm, but not for the onshore wind farm. The Larsen model is more accurate for the wind farm with variable wind turbine hub heights than those with constant wind turbine hub height.

Impact and interest:

4 citations in Scopus
3 citations in Web of Science®
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ID Code: 99550
Item Type: Journal Article
Refereed: Yes
Keywords: Wind farm, Constant hub height, Variable hub heights, Analytical wake models, CFD simulations
DOI: 10.1016/j.enconman.2016.07.017
ISSN: 0196-8904
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Copyright Owner: Copyright 2016 Elsevier
Copyright Statement: Licensed under the Creative Commons Attribution; Non-Commercial; No-Derivatives 4.0 International. DOI: 10.1016/j.enconman.2016.07.017
Deposited On: 27 Sep 2016 04:49
Last Modified: 25 Oct 2016 16:35

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