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Estimation of Rotor Loads Due to Wake Steering

机译：尾流转向引起的转子负荷估算

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摘要

To reduce the levelized cost of wind energy', wind plant controllers are being developed to improve overall performance by increasing energy capture. Previous work has shown that increased energy capture is possible by steering the wake around downstream turbines; however, the impact this steering action has on the loading of the turbines continues to need further investigation with operational data to determine overall benefit. In this work, rotor loading data from a wind turbine operating a wake steering wind plant controller at the DOE/Sandia National Laboratories Scaled Wind Farm Technology (SWiFT) Facility is evaluated. Rotor loading was estimated from fiber optic strain sensors acquired w ith a state-of-the-art Micron Optics Hyperion interrogator mounted within the rotor and synchronized to the open-source SWiFT controller. A variety of ground and operational calibrations were performed to produce accurate measurements of rotor blade root strains. Time- and rotational-domain signal processing methods were used to estimate bending moment at the root of the rotor blade. Results indicate a correlation of wake steering angle with: one-per-revolution thrust moment amplitude, two-per-revolution torque phase, and three-per-revolution torque amplitude and phase. Future work is needed to fully explain the correlations observed in this work and study additional multi-variable relationships that may also exist.
机译：为了降低风能的平均成本”，正在开发风电厂控制器，以通过增加能量捕获来改善整体性能。先前的工作表明，通过绕过下游涡轮机绕过尾流可以增加能量捕获。然而，这种转向动作对涡轮机负载的影响仍然需要通过运行数据进行进一步研究，以确定总体收益。在这项工作中，评估了来自DOE / Sandia国家实验室规模化风电场技术（SWiFT）设施中操作尾流转向风力发电厂控制器的风力涡轮机的转子负载数据。可以从光纤应变传感器估算转子负载，该光纤应变传感器是通过安装在转子内并与开源SWiFT控制器同步的最先进的Micron Optics Hyperion查询器获得的。进行了各种地面和运行标定，以准确测量转子叶片根部应变。时域和旋转域信号处理方法用于估计转子叶片根部的弯矩。结果表明，尾流转向角与以下各项之间的相关性：每转推力力矩幅度一次，每转推力力矩相位两次，以及每转转力矩转矩幅度和相位三个。需要进一步的工作来充分解释这项工作中观察到的相关性，并研究可能也存在的其他多变量关系。

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  • 来源
    《Wind energy symposium 2018》|2018年|563-572|共10页
  • 会议地点 Kissimmee(US)
  • 作者

    Jonathan R. White; Brandon L. Ennis; Thomas G. Herges;

  • 作者单位

    Sandia National Laboratories, Albuquerque, NM, 87112;

    Sandia National Laboratories, Albuquerque, NM, 87112;

    Sandia National Laboratories, Albuquerque, NM, 87112;

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  • 正文语种 eng
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