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为优化风场布置,减小上游风力机尾迹影响,以实现风场全局优化,基于致动线方法,利用OpenFOAM(多物理场运行与操作开源软件)对风力机组风场进行了15种风轮俯仰工况及9种错排布置的数值模拟,比较各优化策略下的风场总输出功率,并结合流场细微结构参数分布,分析不同优化方法对风场全局影响的流动机理。结果表明:尾迹对风场下游风力机影响严重。两种数值模拟优化方法均可实现风场全局优化,其中风轮俯仰优化策略可使风场总输出功率最大提高34.5%;风力机组错排布置可提高68.5%。此外,风场上游风力机功率在风轮俯仰时下降明显,风力机组错排时几乎无变化。
In order to optimize the layout of the wind farm and reduce the influence of the wake of the upstream wind turbine in order to achieve the global optimization of the wind farm, 15 kinds of wind wheels were chosen for the wind farm wind farm using OpenFOAM (Multi-physics Run and Operative Open Source Software) Pitch conditions and 9 kinds of misalignment layout. The total output power of the wind farm under each optimization strategy was compared. Based on the distribution of the microstructure parameters of the flow field, the flow mechanism of the global optimization of the wind farm was analyzed. The results show that the wake has a serious impact on the wind turbine downstream of the wind farm. Both numerical simulation and optimization methods can achieve global optimization of the wind farm. Among them, the wind turbine pitch optimization strategy can increase the total output power of the wind farm by 34.5% at the maximum, and the displacement arrangement of wind turbines by 68.5%. In addition, the power of the wind turbine upstream wind turbine pitching significantly decreased, wind turbines almost no change in the wrong row.