光伏阵列对沙漠风沙运动的影响研究  

Research on the interaction between desert wind-sand movement and photovoltaic array

作　　者：赵明智[1] 吴丽玲 王帅 刘琨 ZHAO Mingzhi;WU Liling;WANG Shuai;LIU Kun(School of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Chahar New Energy Co.,Ltd.,Ulan Qab,012000,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051 [2]内蒙古察哈尔新能源有限公司,内蒙古乌兰察布012000

出　　处：《内蒙古工业大学学报（自然科学版）》2022年第2期137-149,共13页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：国家自然科学基金项目(51466011);内蒙古自然科学基金项目(2019LH05033);内蒙古自治区科技成果转化专项资金项目(2020CG0066)。

摘　　要：以沙漠光伏电站规模化建立为研究背景,探索光伏阵列的铺设对沙漠风沙运动的影响规律。对某生态沙漠光伏电站的主风向及组件安装朝向上三个特征高度进行风速测定,了解阵列内部的风速分布;针对固定风向进行数值模拟研究,分析风沙过境光伏阵列的流场分布。研究表明:光伏阵列的铺设改变了沙漠近地面风沙运动的规律,体现出防风阻沙的作用,且沿安装朝向上的影响相对显著。受结构边缘产生的形状阻力影响,流场最大负压值位于阵列边缘处,扰动流场由此处向未受扰动的流域逐渐过渡。组件中心截面所在区域速度亏损最严重,阵列边缘逐渐回升,靠近来流风速。随着阵列纵向扩展,最大负压由行道近地位置逐渐向光伏组件顶端转移,且逐渐减小;最大速度呈逐渐减小的趋势,下降幅度较小,低速区及回流区覆盖范围增广;阵列首行组件表面沙尘沉积分布最密集,相邻的次行组件表面最稀疏,阵列尾部地面沙尘的分布呈向中心聚拢的趋势。Taking the large-scale establishment of desert photovoltaic power plants as the research background,explore the influence of the laying of photovoltaic arrays on the sand movement in the desert.The wind speed of an ecological desert photovoltaic power station is measured at the three characteristic heights above the main wind direction and the installation direction of the modules to understand the wind speed distribution inside the array;then,numerical simulation research is carried out for the fixed wind direction to analyze the flow field distribution of the wind and sand passing the photovoltaic array.The research results show that the impact of the laying of photovoltaic arrays on the change of wind speed near the surface of the desert reflects the effect of preventing wind and sand,and the influence of the distribution of incoming wind speed along the direction of the array is relatively significant.The shape resistance generated at the edge of the photovoltaic module has a great influence on the fluid motion state.The maximum negative pressure value appears at the edge of the array,and the flow field disturbed by the photovoltaic array gradually transitions from this position to the undisturbed watershed.The near-ground speed loss on the center section of the module is the most serious,followed by the module edge and the array gap,and the array edge gradually rises closer to the incoming wind speed.With the expansion of the vertical arrangement of photovoltaic arrays,the maximum negative pressure gradually shifts from the near-ground position of the street to the top of the photovoltaic module,and gradually decreases.The maximum speed has a gradual decrease,but the decline is not large,and the coverage and extension of the low-speed area and the recirculation area will increase accordingly.The most densely distributed photovoltaic modules are located in the first row of the array,and the sparsest distribution occurs on the surface of the adjacent secondary row of modules,and the distribution of ground dust

关 键 词：风沙运动 光伏阵列 积沙特性 流场分布 

分 类 号：TM615[电气工程—电力系统及自动化]