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Evaluation of wind farm efficiency and wind turbine wakes at the Nysted offshore wind farm

机译：Nysted海上风电场的风电场效率和风力涡轮机尾流评估

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摘要

Here, we quantify relationships between wind farm efficiency and wind speed, direction, turbulence and atmospheric stability using power output from the large offshore wind farm at Nysted in Denmark. Wake losses are, as expected, most strongly related to wind speed variations through the turbine thrust coefficient; with direction, atmospheric stability and turbulence as important second order effects. While the wind farm efficiency is highly dependent on the distribution of wind speeds and wind direction, it is shown that the impact of turbine spacing on wake losses and turbine efficiency can be quantified, albeit with relatively large uncertainty due to stochastic effects in the data. There is evidence of the 'deep array effect' in that wake losses in the centre of the wind farm are under-estimated by the wind farm model WAsP, although overall efficiency of the wind farm is well predicted due to compensating edge effects.
机译：在这里，我们使用丹麦Nysted大型海上风电场的电力输出来量化风电场效率与风速，风向，湍流和大气稳定性之间的关系。正如预期的那样，苏醒损耗与通过涡轮推力系数的风速变化关系最大。方向，大气稳定性和湍流是重要的二阶效应。尽管风电场的效率高度依赖于风速和风向的分布，但事实表明，尽管由于数据的随机影响而具有相对较大的不确定性，但可以量化涡轮间距对尾流损失和涡轮效率的影响。有证据表明，“深层阵列效应”是由于风电场模型WAsP低估了风电场中心的尾流损耗，尽管由于补偿了边缘效应，风电场的整体效率得到了很好的预测。

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  • 来源
    《Wind Energy》 |2010年第6期|P.573-586|共14页
  • 作者

    R. J. Barthelmie; L. E. Jensen;

  • 作者单位

    Atmospheric Science Program and Centre for Research in Environmental Sciences, Indiana University, Bloomington, IN 47405,USA Wind Energy, Risoe DTU National Laboratory for Sustainable Energy, 4000 Roskilde, Denmark;

    rnDONG Energy A/S, Wind Power Analysis, Kraftvaerksvej 53, 7000 Fredericia, Denmark;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    wind farms; wakes; observations;

    机译：风电场;唤醒观察;

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