水平轴风力机组尾迹偏移控制策略研究  

THE CONTROL STRATEGY OF WAKE DEVIATION FOR TWO HORIZONTAL-AXIS WIND TURBINES

作　　者：缪维跑 李春[1,2] 叶舟[1,2] 杨阳[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《太阳能学报》2017年第1期23-31,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(E51176129);上海市教育委员会科研创新(重点)项目(13ZZ120;13YZ066);教育部高等学校博士学科点专项科研基金(博导类)项目(20123120110008)

摘　　要：风场上游风力机的尾迹不仅导致下游风力机功率显著降低,且易引起疲劳载荷等结构问题。故通过CFD模拟两台5 MW风力机串列布置的风场,在考虑大气边界层环境的情况下,使用不同控制方法改变尾迹流向,使其偏离下游风力机风轮中心位置以提高风场总输出功率。结果表明:对上游风力机使用基于偏航和仰角的控制策略时尾迹偏移效果显著,尽管上游风力机的功率有所降低,但下游风力机输出功率增加,使得风场输出总功率得以提高;锥角控制的效果相反,增大锥角时尾迹并未产生明显的偏移而尾迹范围却扩大,导致风场总输出功率降低。The wake of upstream wind turbine in wind farm reduces power production of downstream wind turbine significantly and leads to structural damage such as fatigue loads. Therefore, a wind farm with two 5 MW wind turbines arranged in a line are simulated by CFD, considering the effect of atmosphere boundary layer condition this paper redirect the wake away from the location of downstream wind turbine through various control methods so as to improve overall power output of wind farm. The results shows that wake deflection is significant when the control methods based on yaw and tilt are applied to upstream wind turbine. The loss of power output of upstream wind turbine could be compensated by a larger power gain in downstream wind turbine, which increases overall power production of wind farm. The control method based on cone yields opposite consequence. When upstream wind turbine increases its cone angle, the wake deflection is implicit while the range of wake is expanded, which leads to a reduction of the global power output.

关 键 词：尾迹偏移 水平轴风力机 偏航 仰角 锥角 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]