期刊
WIND ENERGY
卷 12, 期 4, 页码 348-362出版社
WILEY
DOI: 10.1002/we.297
关键词
wind turbine performance; wind shear; profiles; turbulence; BEM simulations; equivalent wind speed
资金
- Danish Energy Agency [3302-0106]
- Marie Curie ModObs Network [MRTN-CT-2006-019369]
- Riso/DTU
- Siemens Wind Power
- Vestas Wind Systems A/S
To identify the influence of wind shear and turbulence on wind turbine performance, flat terrain wind profiles are analysed up to a height of 160 m. The profiles' shapes are found to extend from no shear to high wind shear, and on many occasions, local maxima within the profiles are also observed. Assuming a certain turbine hub height, the profiles with hub-height wind speeds between 6 m s(-1) and 8 m s(-1) are normalized at 7 m s(-1) and grouped to a number of mean shear profiles. The energy in the profiles varies considerably for the same hub-height wind speed. These profiles are then used as input to a Blade Element Momentum model that simulates the Siemens 3.6 MW wind turbine. The analysis is carried out as time series simulations where the electrical power is the primary characterization parameter. The results of the simulations indicate that wind speed measurements at different heights over the swept rotor area would allow the determination of the electrical power as a function of an 'equivalent wind speed' where wind shear and turbulence intensity are taken into account. Electrical power is found to correlate significantly better to the equivalent wind speed than to the single point hub-height wind speed. Copyright (C) 2008 John Wiley & Sons, Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据