基于区域气候模式的江苏省风能评估试验

Wind Energy Resource Evaluation for Jiangsu Province Based on RegCM3

利用2000年1月1日-12月31日NCEP／NCAR的再分析资料，选取区域气候模式RegCM3对江苏省区域的风能进行细网格数值模拟。通过风速模拟场与同期实测场大尺度分布的对比分析表明，模拟场能够较好地反映风场的空间分布形态，而在细网格条件下，模拟场更能真实地反映风场在特殊地形下的分布特征：江苏省地面平均风能密度模拟值在60—100w／m^2之间，随高度上升而逐渐增大，200m高度可达320—380w／m^2；沿海地区风能大于内陆，苏中南地区大于苏北地区，太湖等水域风能大于周围陆地；低层风能的海陆间梯度变化明显，高层则趋于平缓。通过分析认为，风力发电场的最佳位置可在江苏中南沿海附近。

Using the NCEP/NCAR reanalysis data from January 1 to December 31 on 2000, the wind energy of Jiangsu Province was simulated by the Regional Climate Model3 （ RegCM3 ）. The comparative analysis of the simulated and observed data demonstrates that the spatial distribution of simulated wind field can well reflect the spatial pattern of the observed, and especially, the fine resolution simulation can more realistically reproduce the feature of winds over special terrains. The results of wind simulation show： 1 ） The surface mean wind energy density of Jiangsu increases with height from 60- 100 W/m^2 on the ground surface to 320-380 W/m^2 at the height of 200 m. 2）The wind energy near the coast is larger than that in the inland, and the wind power in the central-south of Jiangsu than that in the north. Moreover, the availability of wind power above Taihu Lake and other lakes is more sufficient than nearby lands. 3 ） The gradient of wind power is sharp between land and sea at the lower levels, while it becomes gentle at the higher levels. As a result, this paper suggests that the best location for building wind power stations is the coastal regions in the central-south of Jiangsu Province.