含沙量对地面光伏阵列的气动载荷研究  

作　　者：李超群 来永斌[1] 王龙[1] 

机构地区：[1]安徽理工大学机电工程学院,安徽淮南232001

出　　处：《科技创新与应用》2024年第1期79-82,共4页Technology Innovation and Application

基　　金：中国电力国际发展有限公司科技项目(ZDGL-KJ-2021-014)。

摘　　要：沙粒体积分数是风沙环境中影响光伏板及其承载结构使用寿命的重要因素之一,光伏板表面压力和倾覆力矩预测对光伏阵列的安装与设计,以及挡风沙结构的设计都有十分重要的意义。以安装倾角为25°,4×4方阵形式的光伏阵列为研究对象,采用欧拉双流体模型探究不同浓度对光伏板表面及其周围流场结构和倾覆力矩的影响规律。结果表明,不同沙粒浓度下,光伏板上表面的风沙压力变化分布情况基本相同,而随着入口处沙粒体积分数的增大,光伏板上表面同一区域的风沙压力不断增大。除第二排光伏板,其余光伏板倾覆力矩随入口处沙粒体积分数增大而增大,且第一排倾覆力矩最大。研究工作可为荒漠地区光伏阵列的设计和安装提供一定的理论依据。The volume fraction of sand particles is one of the important factors affecting the service life of photovoltaic panels and their load-bearing structures in the wind-blown sand environment.The prediction of surface pressure and overturning moment of photovoltaic panels is of great significance to the installation and design of photovoltaic arrays and the design of wind-blown sand structures.Taking the photovoltaic array with an installation angle of 25°and a 4×4 square array as the research object,the Euler two-fluid model was used to explore the effects of different concentrations on the surface and surrounding flow field structure and overturning moment of the photovoltaic plate.The results show that the wind-blown sand pressure on the upper surface of the photovoltaic panel is basically the same under different sand concentrations,but the wind-blown sand pressure in the same area on the upper surface of the photovoltaic panel increases with the increase of the volume fraction of sand particles at the entrance.Except for the second row of photovoltaic panels,the overturning moment of the other photovoltaic panels increases with the increase of sand volume fraction at the entrance,and the overturning moment of the first row is the largest.The research work can provide a theoretical basis for the design and installation of photovoltaic arrays in desert areas.

关 键 词：光伏阵列 沙粒体积分数 倾覆效应 风沙载荷 压力变化 

分 类 号：TM615[电气工程—电力系统及自动化]