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首页> 外文期刊>Journal of Engineering for Gas Turbines and Power >Effect of Flow Inclination on Wind Turbine Performance
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Effect of Flow Inclination on Wind Turbine Performance

机译：气流倾斜对风力发电机性能的影响

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摘要

This work examines the effect of flow inclination on the performance of a stand-alone wind turbine and of wind turbines operating in the wakes of upstream turbines. The experimental portion of this work, which includes performance and flowfield measurements, is conducted in the ETH dynamically-scaled wind turbine test facility, with a wind turbine model that can be inclined relative to the incoming flow. The performance of the wind turbine is measured with an in-line torquemeter, and a 5-hole steady-state probe is used to detail the inflow and wake flow of the turbine. Measurements show that over a range of tip-speed ratios of 4-7.5, the power coefficient of a wind turbine with an incoming flow of 15 deg inclination decreases on average by 7% relative to the power coefficient of a wind turbine with a noninclined incoming flow. Flowfield measurements show that the wake of a turbine with an inclined incoming flow is deflected; the deflection angle is approximately 6 deg for an incoming flow with 15 deg inclination. The measured wake profiles are used as inflow profiles for a blade element momentum code in order to quantify the impact of flow inclination on the performance of downstream wind turbines. In comparison to the case without inclination in the incoming flow, the combined power output of two aligned turbines with incoming inclined flow decreases by 1%, showing that flow inclination in complex terrain does not significantly reduce the energy production.
机译：这项工作研究了流动倾角对独立式风力涡轮机以及上游涡轮机尾部运行的风力涡轮机性能的影响。这项工作的实验部分（包括性能和流场测量）在ETH动态缩放的风力涡轮机测试设施中进行，其风力涡轮机模型可以相对于进入的流量倾斜。风力涡轮机的性能通过在线扭矩计进行测量，并使用5孔稳态探头详细记录了涡轮机的流入和尾流。测量表明，在4-7.5的叶尖速比范围内，进风15度倾斜的风力发电机的功率系数相对于不倾斜进风的风力发电机的功率系数平均降低7％。流。流场测量表明，带有倾斜进水流的涡轮机的尾流发生了偏转。对于倾斜15度的流入流，偏转角约为6度。测得的尾流轮廓用作叶片元件动量代码的流入轮廓，以便量化流向倾斜度对下游风力涡轮机性能的影响。与进水没有倾斜的情况相比，两台带有进水倾斜的对齐涡轮机的总功率输出降低了1％，这表明复杂地形中的水流倾斜不会显着降低能量产生。

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  • 来源
    《Journal of Engineering for Gas Turbines and Power》 |2012年第12期|122601.1-122601.8|共8页
  • 作者

    Christina Tsalicoglou; Sarah Barber; Ndaona Chokani; Reza S. Abhari;

  • 作者单位

    Laboratory for Energy Conversion, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland;

    Laboratory for Energy Conversion, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland;

    Laboratory for Energy Conversion, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland;

    Laboratory for Energy Conversion, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland;

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