Power output efficiency in large wind farms with different hub heights and configurations

Yu-Ting Wu, Teh-Lu Liao, Chang Kuo Chen, Chuan Yao Lin, Po Wei Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Large-eddy simulation (LES) is used to investigate the effect of the spatial arrangement of a utility-scale wind turbine array on the power outputs. Eight turbine-array layouts are considered, where each has 120 turbines installed in 30 rows with aligned or staggered configurations along the wakewise direction. We perform the LESs of neutrally-stratified atmospheric boundary layer over the eight large wind farms with the turbines arranged with a perfectly-aligned configuration, four laterally-staggered configurations, and three vertically-staggered configurations. Unlike the alignment of the turbine micro-siting in the aligned wind farm, both the laterally-staggered and vertically-staggered configurations lead to the misalignment of the turbines with staggered arrangement in the lateral and vertical directions. Simulation results show that the power outputs in the wind farms have obvious decreases to 45–65% within the first 12 turbine rows and retain within that range in the rest. In general, the staggered wind farms produce more power than the aligned wind farm. The laterally-staggered wind farm configurations due to the better adaptability in spatial configuration provide higher power production in the first 6th turbine rows. Moreover, the vertically-staggered configuration causes clear reduction in the maxima of the velocity deficit and the turbulence intensity inside the farm wake flow.

Original languageEnglish
Pages (from-to)941-949
Number of pages9
JournalRenewable Energy
Volume132
DOIs
Publication statusPublished - 2019 Mar 1

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Farms
Turbines
Atmospheric boundary layer
Large eddy simulation
Wind turbines
Turbulence

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

Cite this

Wu, Yu-Ting ; Liao, Teh-Lu ; Chen, Chang Kuo ; Lin, Chuan Yao ; Chen, Po Wei. / Power output efficiency in large wind farms with different hub heights and configurations. In: Renewable Energy. 2019 ; Vol. 132. pp. 941-949.
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Power output efficiency in large wind farms with different hub heights and configurations. / Wu, Yu-Ting; Liao, Teh-Lu; Chen, Chang Kuo; Lin, Chuan Yao; Chen, Po Wei.

In: Renewable Energy, Vol. 132, 01.03.2019, p. 941-949.

Research output: Contribution to journalArticle

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