刚察扎苏合光伏电站风场分布讨论

Discussion on Wind Field Distribution of Zhasuhe Photovoltaic Power Station

以刚察扎苏合10 MW光伏发电工程为例,采用湍流k-ε模型对光伏发电站的风场风速和风压分布进行了分析研究。结果表明:由于光伏电站中支架结构高度较低,风速较小,计算得到的风压比按"建筑结构荷载规范"计算得到的风荷载设计值小得多;整个光伏电站中间区域的电池板的压力均远小于外围电池板所受的风压。提出按风压分布,将整个光伏电站分区域对太阳能电池板支架结构及基础形式进行设计,能够有效降低部分支架自重,从而达到节约成本的效果;在得到电站所在地区的全年风向及风速分布数据后,可根据真实情况对电站及其周围风场分布进行模拟,考虑风场、电池板、支架及基础的整体作用,优化支架及基础的结构,为光伏发电工程的经济、安全、可靠性提供保障。

Taking advantage of the k-ε turbulence model,the distribution of wind velocity and pressure of Zhasuhe10 MW photovoltaic power station was researched by numerical simulation method. The results show that because of the low bracket height and the small wind velocity,the wind load calculated by FEM software is much lower than the design value provided by ＂ Load Code for the Design of Building Structures＂. In the middle area of the power station,the wind pressure is much smaller than the outer area. So designing the bracket and the foundation according to different distribution of wind pressure is an efficient way to reduce the dead load. And then the cost will be saved. Having got the annual wind direction and velocity data,the real wind field distribution around the power plant can be simulated by finite element method. On the basis of the simulation results,the bracket and foundation structure can be optimized,which can provide guaranty for a safe,economical and reliable design for the Zhasuhe photovoltaic power station project.