Effects of seismic and aerodynamic load interaction on structural dynamic response of multi-megawatt utility scale horizontal axis wind turbines
Effects of seismic and aerodynamic load interaction on structural dynamic response of multi-megawatt utility scale horizontal axis wind turbines
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DOI：
10.1016/j.renene.2015.07.098
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发表时间：
2016-02
期刊：
影响因子：
8.7
通讯作者：
M. Asareh;W. Schonberg;Jeffery Volz
中科院分区：
文献类型：
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作者：
M. Asareh;W. Schonberg;Jeffery Volz
水平轴风力涡轮机可能会经历显著的时变空气动力学载荷，其有可能对结构、机械和电力生产造成不利影响。风电行业的进步导致在地震活动频繁的地区建设风电场。随着计算工具的进步，风力涡轮机的行为应该进行更真实的表示。其中一个仿真平台是使用5 MW NREL公用事业规模参考涡轮机模型开发的。所进行的模拟将用于评估气动和地震载荷耦合对该结构的发电和结构动力学行为的影响。不同的涡轮机运行情况，如（i）无地震的正常运行条件，（ii）存在地震负载的空转条件，（iii）地震的正常运行条件，以及（iv）地震引起的紧急停机，将在各种负载条件下进行模拟，以显示发电功率和动态响应的差异。本文的结果为考虑不同强度措施的发电功率计算和设计导出参数提供了公式。此外，空气动力阻尼和桨距控制系统的影响，显示在由此产生的设计需求负载的减少。
Horizontal axis wind turbines can experience significant time varying aerodynamic loads that has the potential to cause adverse effects on structural, mechanical, and power production. The progress in the wind industry has caused the construction of wind farms in areas prone to high seismic activity. With the advances in computational tools, a more realistic representation of the behavior of wind turbines should be performed. One of the simulation platforms was developed using the 5 MW NREL utility scale reference turbine model. The performed simulations will be used to evaluate the effects of aerodynamic and seismic load coupling on the power generation and structural dynamics behavior of this structure. Different turbine operational scenarios such as (i) normal operational condition with no earthquake, (ii) idling condition with the presence of seismic loads, (iii) normal operational condition with earthquake, and (iv) earthquake-induced emergency shutdown will be simulated with various loading conditions to show the differences in generated power and dynamic response. The results of this paper provide formulations for calculating generated power and design deriving parameters by considering different intensity measures. Moreover, the effects of aerodynamic damping and pitch control system are presented to shows reduction in the resulting design demand loads.