该文通过数值模拟方法,系统研究单竖排光伏阵列的风荷载特性以及风向角和倾角的影响。结果表明：光伏阵列在横风作用下,迎风侧光伏组件的风荷载系数最大;光伏组件阻力系数、升力系数以及扭矩系数均随倾角的增大而增大,且在倾角小于20°时变化速率较大,大于20°之后体型系数趋于平缓;光伏阵列中,组件风荷载系数的遮挡效应十分明显,迎风侧光伏组件降低了背风侧组件的来流风速,使得位于下游区域的光伏组件所受风荷载显著减小,且倾角越大遮挡效应越明显。
Abstract
In this paper, the wind load characteristics of single vertical row photovoltaic arrays and the influence of wind direction and inclination angle are systematically studied using numerical method. The results show that under the crosswind, the wind load coefficient of the photovoltaic modules on the windward side is the largest. The drag coefficient, lift coefficient and overturning moment coefficient of the photovoltaic modules increase when the inclination angle becomes larger. These coefficients rapidly change when the inclination angle is less than 20°, and then turn to be constant after the inclination angle is above 20°. The shielding effect is very obvious for the PV arrays. The windward photovoltaic modules reduce the incoming wind speed of the leeward side modules, therefore, the wind load on the photovoltaic module located in the downstream area is obviously lower than those in windward. In addition, the shielding effect is more obvious when the inclination angle is larger.
关键词
光伏系统 /
风荷载 /
数值模拟 /
风向角 /
倾角
Key words
photovoltaic system /
gust loads /
computational aerodynamics /
wind direction /
inclination angle
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] ABIOLA-OGEDENGBE A, HANGAN H, SIDDIQUI K.Experimental investigation of wind effects on a standalone photovoltaic (PV) module[J]. Renewable energy, 2015, 78: 657-665.
[2] JUBAYER C M, HANGAN H.Numerical simulation of wind effects on a stand-alone ground mounted photovoltaic (PV) system[J]. Journal of wind engineering and industrial aerodynamics, 2014, 134: 56-64.
[3] SHADEMAN M, BARRON R M, BALACHANDAR R, et al.Numerical simulation of wind loading on ground-mounted solar panels at different flow configurations[J]. Canadian journal of civil engineering, 2014, 41(8): 728-738.
[4] 姜涛, 牛斌. 考虑风向角的地面光伏阵列风压折减特性研究[J]. 太阳能, 2016(3): 48-52.
JIANG T, NIU B.Study on wind pressure reduction characteristics of ground photovoltaic array considering wind direction angle[J]. Solar energy, 2016(3): 48-52.
[5] AGARWAL A, IRTAZA H, ZAMEEL A.Numerical study of lift and drag coefficients on a ground-mounted photo-voltaic solar panel[J]. Materials today: proceedings, 2017, 4(9): 9822-9827.
[6] JUBAYER C M, HANGAN H.A numerical approach to the investigation of wind loading on an array of ground mounted solar photovoltaic (PV) panels[J]. Journal of wind engineering and industrial aerodynamics, 2016, 153: 60-70.
[7] GB 50797—2012, 光伏发电站设计规范[S]B 50797—2012, 光伏发电站设计规范[S]. 北京: 中国计划出版社, 2012.
GB 50797—2012, Code for design of photovoltaic power station[S].
[8] 李晓娜. 太阳能光伏支架风荷载体型系数研究[D]. 石家庄: 石家庄铁道大学, 2015.
LI X N.Study on wind load of solar photovoltaic bracket[D]. Shijiazhuang: Shijiazhuang Tiedao University, 2015.
[9] 马文勇, 柴晓兵, 马成成. 柔性支撑光伏组件风荷载影响因素试验研究[J]. 太阳能学报, 2021, 42(11): 10-18.
MA W Y, CHAI X B, MA C C.Experimental study on wind load influencing factors of flexible support photovoltaic modules[J]. Acta energiae solaris sinica, 2021, 42(11): 10-18.
[10] 马文勇, 马成成, 王彩玉, 等. 光伏阵列风荷载干扰效应风洞试验研究[J]. 实验流体力学, 2021, 35(4): 19-25.
MA W Y, MA C C, WANG C Y, et al.Wind tunnel experimental study on the wind load interference effect of solar panel arrays[J]. Journal of experiments in fluid mechanics, 2021, 35(4): 19-25.
[11] 柴晓兵. 柔性太阳能光伏支架风荷载取值研究[D]. 石家庄: 石家庄铁道大学, 2020.
CHAI X B.Research on wind loads on flexible solar photovoltaic support system[D]. Shijiazhuang: Shijiazhuang Tiedao University, 2020.
[12] 马成成. 太阳能光伏板风荷载特性与风致响应研究[D]. 石家庄: 石家庄铁道大学, 2021.
MA C C.Study on wind load characteristics and wind-induced response of solar photovoltaic panels[D]. Shijiazhuang: Shijiazhuang Tiedao University, 2021.
基金
中机国际工程设计研究院有限责任公司科技重大项目支持（CX-B-2020-0017）; 湖南省自然科学基金（2023JJ10071）; 湖南省科技创新计划项目（2021RC3017）; 中南大学创新驱动计划项目（2023CXQD017）
PDF(2406 KB)
