集装箱顶风力机的微观选址及功率预测研究

STUDY ON MICROSITING AND POWER PREDICTION ON WIND TURBINE AT TOP OF THE CONTAINER

根据国际能源署Task27项目，针对置于张北风能基地的集装箱替代建筑物进行建模。利用适宜该地风资源的中性平衡大气边界层理论编制更精确的人流条件，从风加速因子、平均湍流厚度及风力机功率增大因子等新的角度分析箱顶垂直方向上的湍流特性及箱顶风力机适宜的安装位置及高度。结果表明：270．0°人流条件，箱顶1．17倍箱高高度范围为非高湍流区，且1．17～1．50倍箱高高度范围为风力机的适宜安装高度、前沿点为适宜安装位置；选定风力机的适宜安装位置为前沿点、安装高度为1．42—1．52倍箱高，且年平均风速、不同水平风向角下风力机功率增大因子最大可达54．5％，可为建筑屋顶风力机的微观选址提供参考。

According to the IEA Task 27 project, container was used for modeling the building in present work, and the flow field around the container placed in Zhangbei wind power construction base was simulated based on CFD software. Based on the neutral equilibrium atmosphere boundary layer （NE-ABL） theory for the local wind resource, more precise inflow condition was worked out turbulent characteristics in the vertical direction above the container, the suitable mounting location and height on top of the container for installing a HAWT were cmalyzed from several new perspectives such as wind acceleration factor, average thickness of the turbulent and power increase factor. The results suggest that in the inflow condition of 270.0 degrees, and 1.17 times container height above the container is the low turbulence region, and 1.17 to 1.50 times container height region above the container is the suitable installation height for wind turbine, and the frontier point is the appropriate installation location ; the frontier point is the appropriate installation location for the selected wind turbine, the suitable installation height is 1.42 to 1.52 times container height, and in the condition of annual average wind speed, the maximum power increase factor among different wind inflow angles could reach up to 54.5%. This will provide a reference for micrositing of wind turbine at top of the building.