基于致动线方法的风力机组风场布置优化

摘要

Based on actuator line method,numerical simulations were conducted on the wind farm with three 5 MW wind turbines in five different aligned arrangements using OpenFOAM.By comparing the total power output,the velocity fields and velocity profiles at the hub height of wind turbines for different wind farm layouts,the effects of upstream turbine wake on the downstream wind turbine were investigated.Results show that in an aligned arrangement,the power output may be reduced by 82.72％ for the wind turbine lying in the wake.Changing the relative position of wind turbines reasonably could help to optimize the wind farm layout,when the total power output may be increased by a maximum of 11.8％,even if the output of an individual wind turbine declines somewhat.%基于致动线方法,利用OpenFOAM对5种不同间距串列布置的具有3台5 MW风力机的风场进行了模拟.通过调整风力机组间的位置,对比不同风场布置时的总输出功率,并结合轮毂高度处流场分布及尾迹速度轮廓线,分析尾迹对风场下游风力机的影响.结果表明:串列布置时,处于尾迹中的风力机功率下降可达82.72％;改变风场中风力机组相对位置可使风场布置得到优化,虽个别风力机性能有所下降,但风场总输出功率最大可提高11.8％.