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中文摘要：
针对相对平坦地形,采用线性化流体方程描述流场,并根据大气边界层特性进一步简化计算方法,即利用所谓地形影响系数快速求解感兴趣点（一般为风机位置）的流动速度;针对尾流影响,采用工程上广泛使用的修正Park模型来求解,尾流线性叠加并忽略较弱的尾流影响。文中介绍了一个已建典型海滨风电场的装机规模、地表粗糙度以及测风情况,并以此风电场为算例采用不同测风数据进行发电量计算,预测结果与实际发电量较好地吻合。最后探索了算例风电场各风机发电量不均衡原因,提出地形图大小对风场模拟准确性的影响,并从工程设计角度提出具体意见。
英文摘要：
The flow field of simple terrain is described by a linearization of the flow equations.And the computational method is further simplified based on the characteristic of atmospheric boundary layer（ABL）,namely,with a so-called topographic effects coefficient,the flow velocity is obtained quickly on the point（generally wind turbine′s sites） being interested in.For wake effects,a modified Park model is used,which has been involved in wind farm design.The wake effects of wind turbines are linearly superimposed and the smaller ones are neglected.A typical-built seashore wind farm is introduced,including its total rated capacity,roughness of the ground and wind data measuring situation.Then as a calculating example,the power production of the wind farm is predicted by using different wind data.Most predicted values coincide well with the measured ones.Finally,it is explored why the output of each wind turbine is so different,and the conclusion presents that the size of topographic maps can influence the accuracy of wind field simulation.Also,definite suggestion about this is proposed for engineering design.
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