山区风电场机组选型和布置研究

发布时间：2019-06-07 09:34

【摘要】：风电场机组选型和布置是风电场建设中的一项重要工作,它直接关系到项目的效益,山区风电场由于地形条件复杂,风受地形的影响明显,风电场内各风机位处风速、风向、风切变、湍流强度等均存在较大差别,根据平均风速及50年一遇最大风速划分,风电场内可能存在多个安全等级,在这种情况下,如果采用单一的风电机组型号,其经济性将受到较大的影响。本文从研究风资源、风特性及山区风资源的特点着手,深入讨论了风速、风切变、50年一遇最大风速等对风力发电机组选型和布置的影响,介绍了CFD软件的理论基础和求解方法,文章通过合理的选择具有代表性的地点立塔测风,真实客观的掌握风电场的风资源状况及变化趋势,在研究过程中使用基于CFD(计算流体力学技术)研发的软件WindSim进行风能资源模拟以便于机型选择和微观选址,通过对风电场区域风资源栅格的分析,结合风电机组安全等级,通过混合装机的方法进行风电机组选型和布置,显著提高了风电场的发电量。
[Abstract]:The selection and arrangement of wind farm units is an important work in the construction of wind farms, which is directly related to the benefit of the project. Because of the complex topographic conditions, the wind is obviously affected by the terrain, and the wind speed and wind direction at each fan position in the wind farm. There are great differences in wind shear and turbulence intensity. According to the average wind speed and the maximum wind speed once in 50 years, there may be multiple safety grades in the wind farm. In this case, if a single wind turbine model is adopted, Its economy will be greatly affected. Based on the study of wind resources, wind characteristics and the characteristics of mountain wind resources, the effects of wind speed, wind shear and maximum wind speed once in 50 years on the selection and arrangement of wind turbines are discussed in this paper. This paper introduces the theoretical basis and solving method of CFD software, and through reasonable selection of representative locations for wind measurement, this paper truly and objectively grasps the wind resources status and changing trend of wind farms. In the research process, the software WindSim based on CFD (Computational fluid Dynamics) is used to simulate the wind energy resources in order to facilitate the selection of models and micro location. Through the analysis of the wind resources grid in the wind farm area, combined with the safety level of wind turbines, The type selection and arrangement of wind turbine are carried out by hybrid installation method, which significantly improves the power generation of wind farm.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM614

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