风能模拟系统WEST在中国风能数值模拟中的应用

Application of Wind Energy Simulation Toolkit(WEST) to Wind Energy Numerical Simulation of China

利用加拿大风能资源数值模拟系统(WEST)进行中国风能资源的模拟,得到了水平分辨率5km、低空垂直分辨率10 m的中国风能分布图谱。将模拟结果与气象台站观测资料进行了对比分析,结果表明,WEST在中国中东部海拔较低地区的模拟能力较好,平均相对误差<20%,但对于中国西部高原的模拟结果不理想,相对误差达到了60%以上,说明WEST系统对中国西部高原的模拟能力还需提高。应从其大尺度气候背景场分类和中尺度模型大气边界层物理过程参数化方面进行本地化改进,使之能更好地应用于中国风能资源评估工作。

The Canadian wind energy simulation toolkit（WEST） is applied to making wind atlas of China. Comparing with the observation data, the stations which simulation relative error less than 20% are mostly located in the eastern and the costal area of China, but the stations which relative error lager than 60% are mostly located in the high lying western China. It is found that the WEST has more accurate distribution of wind energy resources in mid-east China with low-lying than in the western plateau of China. It shows that the climatic background classification and the atmospheric boundary layer parameterization schemes of WEST are needed to be modified.