Long-term loads for a monopile-supported offshore wind turbine
Long-term loads for a monopile-supported offshore wind turbine
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DOI：
10.1002/we.1569
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发表时间：
2014-02
期刊：
影响因子：
4.1
通讯作者：
Erica Rendon;L. Manuel
中科院分区：
文献类型：
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作者：
Erica Rendon;L. Manuel
对于5兆瓦底部支承式海上风力机的设计，准确预测与极限状态相关的长期“特征”负荷是本研究的重点。具体地说，我们重点预测了单柱支承的浅水海上风力机的泥线和叶片根部的长期前、后塔架弯矩和面外弯矩。在确定设计的特征载荷时，我们使用了使用逆可靠性程序的长期载荷的替代概率预测。由于负荷变化性取决于环境条件(定义风速和波高)，因此我们表明，明确说明这种负荷变化性的长期预测更准确，特别是对于与超过额定风速和相关波高相关的环境状态。版权所有©2012 John Wiley&Sons，Ltd.
Accurate prediction of long-term ‘characteristic’ loads associated with an ultimate limit state for design of a 5-MW bottom-supported offshore wind turbine is the focus of this study. Specifically, we focus on predicting the long-term fore–aft tower bending moment at the mudline and the out-of-plane bending moment at the blade root of a monopile-supported shallow-water offshore wind turbine. We employ alternative probabilistic predictions of long-term loads using inverse reliability procedures in establishing the characteristic loads for design. Because load variability depends on the environmental conditions (defining the wind speed and wave height), we show that long-term predictions that explicitly account for such load variability are more accurate, especially for environmental states associated with above-rated wind speeds and associated wave heights. Copyright © 2012 John Wiley & Sons, Ltd.