太阳能Issue(5)：39-50,12.DOI:10.19911/j.1003-0417.tyn20240507.02
考虑遮挡效应的漂浮式光伏方阵顺风向风荷载的数值分析及简化计算方法研究
RESEARCH ON NUMERICAL ANALYSIS AND SIMPLIFIED CALCULATION METHOD OF DOWNWIND LOAD ON FLOATING PV ARRAYS CONSIDERING SHADING EFFECT
摘要
Abstract
To improve the accuracy of downwind load calculation for floating PV arrays,a detailed study is conducted on the wind load shading effect of floating PV arrays under downwind action.This paper first establishes a CFD numerical model of a floating PV array based on CFD method,and verifies its computational rationality.Then,the influencing factors and distribution patterns of wind load shading effects are analyzed,and wind load attenuation coefficients are introduced to reflect the wind load shading effects of floating PV arrays.The distribution patterns and analytical formulas of wind load attenuation coefficients are obtained.Finally,a simplified calculation method for downwind load of floating PV arrays considering shading effect is proposed,and its calculation results are verified.The research results show that:1)Under downwind conditions,the wind load shading effect of floating PV arrays is significant,but the impact range is limited and unevenly distributed.The wind load on the first row of PV modules on the windward side is the highest,then rapidly decreases from the second row,but gradually increases again after a certain distance.The wind load shading effect of edge PV modules in floating PV arrays is slightly smaller than that of non-edge PV modules.2)Due to the use of T/CPIA 0017-2019 calculation method,the parameter values of all PV modules are the same,resulting in significantly higher wind loads calculated.3)The wind load attenuation coefficient can well reflect the wind load shading effect in floating PV arrays,which is greatly affected by the installation angle of PV modules and has a small correlation with wind speed.4)The proposed simplified calculation method for downwind load of floating PV arrays considering shading effect proposed has a good agreement with the simulation results of CFD numerical models.Its calculation process is relatively simple and has stronger operability in engineering design,which can save a lot of calculational and time cost caused by data analysis,and has better engineering economy.关键词
漂浮式光伏方阵/风荷载/遮挡效应/顺风向/数值分析/风荷载衰减系数Key words
floating PV arrays/wind load/shading effect/down wind/numerical analysis/wind load attenuation coefficient分类
能源科技引用本文复制引用
左得奇,杨光,杨振宇,侯克让,钟飞..考虑遮挡效应的漂浮式光伏方阵顺风向风荷载的数值分析及简化计算方法研究[J].太阳能,2025,(5):39-50,12.基金项目
中国电力工程顾问集团有限公司研究项目(DG2-T04-2022) （DG2-T04-2022）
