Abstract:To estimate the wind load distribution on a supporting cable for photovoltaic panel (PV), a series wind tunnel tests was carried out to obtain the wind pressure coefficients on PV module via rigid model pressure measurement.The rule of the wind load distribution was calculated with the consideration of the moment induced by nonuniform wind pressure distribution.The results show that the extreme wind loads on the PV module with small inclination occur at the angle of attack of 0°, 30°, 150° or 180°.The wind load on the PV module in the middle is larger than that on adjacent ones.The distribution of wind load on the module shows an obvious gradient along the wind, and the wind load on the windward side is larger than that on the leeward side.The eccentricity in the length direction of the PV module is greater than in the width direction.Based on the nonuniform wind pressure distribution, the wind load model with consideration of moment was proposed.The pressure coefficient and eccentricity of the proposed model were given.The wind load distribution coefficients of the upper and lower cables in cable supported photovoltaic panel were suggested.The proposed model and distribution coefficients can be used in designing in flexible supported solar photovoltaic panel.
马文勇1, 2,柴晓兵1,赵怀宇1,马成成1. 基于偏心风荷载分布模型的柔性支撑索分配系数研究[J]. 振动与冲击, 2021, 40(12): 305-310.
MA Wenyong1, 2, CHAI Xiaobing1, ZHAO Huaiyu1, MA Chengcheng1. A study on distribution coefficient of a flexible photovoltaic support cable based on an eccentric moment wind load distribution model. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(12): 305-310.
[1]光伏发电站设计规范: GB 50797-2012 [S].北京:中国计划出版社,2012.
[2]光伏支架结构设计规程:NB/T 10115-2018[S].北京:中国计划出版社,2018.
[3]太阳光发电协会(日本).太阳能光伏发电系统的设计与施工[M].北京: 科学出版社, 2006.
[4]马文勇, 孙高健, 刘小兵, 等.太阳能光伏板风荷载分布模型试验研究[J].振动与冲击, 2017,36(7):8-13.
MA Wenyong, SUN Gaojian, LIU Xiaobing, et al.Tests for wind load distribution model of solar panels[J].Journal of Vibration and Shock, 2017,36(7):8-13.
[5]Eurocode 1: actions on structures, Part 1-4: general actions-wind actions: prEN 1991-1-4[S].Brussels: European Committee for Standardization,2004.
[6]建筑结构荷载规范:GB 50009-2012 [S].北京:中国建筑工业出版社,2012.
[7]Minimum design loads for buildings and other structures:ASCE/SE 7-10[S].American Society of Civil Engineers, 2013.
[8]李寿科, 刘智宇, 张雪, 等.单坡光伏车棚风洞试验研究[J].振动与冲击, 2019,38(7):240-245.
LI Shouke, LIU Zhiyu, ZHANG Xue, et al.Wind tunnel tests for a solar parking shed with a mono-sloped roof[J].Journal of Vibration and Shock, 2019, 38(7): 240-245.
[9]李寿科, 张雪, 方湘璐, 等.双坡光伏车棚屋面风荷载特性[J].太阳能学报, 2019,40(2):530-537.
LI Shouke, ZHANG Xue, FANG Xianglu, et al.Wind loads on solar car parking gable shed[J].Acta Energiae Solaris Sinica, 2019,40(2):530-537.
[10]KOPP G A.Wind loads on low-profile, tilted, solar arrays placed on large, flat, low-rise building roofs[J].Journal of Structural Engineering, 2014,140(2): 1-10.
[11]CAO J X, YOSHIDA A, SAHA P K, et al.Wind loading characteristics of solar arrays mounted on flat roofs[J].Journal of Wind Engineering and Industrial Aerodynamic, 2013, 123(4): 214-225.
[12]龚敏, 欧添雁.单个屋面光伏组件风载体型系数风洞试验研究[J].安徽建筑, 2015,22(6):183-184.
GONG Min, OU Tianyan.Research on wind tunnel test of shape coefficient of wind load for photovoltaic module with single roof[J].Anhui Architecture,2015,22(6):183-184.
[13]SORENSEN B.Renewable energy[M].Elsevier, Boston, USA, 2004.
[14]贺广零, 蒋华庆, 单建东, 等.光伏方阵风荷载模型研究[J].电力建设, 2012,33(10):5-8.
HE Guangling, JIANG Huaqing, SHAN Jiandong, et al.Research of wind load model in photovoltaic[J].Electric Power Construction, 2012,33(10):5-8.
[15]马文勇, 柴晓兵, 刘庆宽, 等.底部阻塞对太阳能光伏板风荷载的影响研究[J].建筑结构, 2019, 49(2):129-134.
MA Wenyong, CHAI Xiaobing, LIU Qingkuan, et al.Study on effect of bottom flow obstruction on wind load of solar photovoltaic panels[J].Building Structure, 2019, 49(2):129-134.
[16]刘庆宽.多功能大气边界层风洞的设计与建设[J].实验流体力学, 2011,25(3):66-70.
LIU Qingkuan.Aerodynamic and structure design of multifunction boundary-layer wind tunnel[J].Journal of Experiments in Fluid Mechanics, 2011,25(3):66-70.
[17]江继波, 章正暘, 陆元明, 等.考虑弯矩的光伏阵列风荷载数值分析[J].可再生能源, 2019,37(1):46-52.
JIANG Jibo, ZHANG Zhengyang, LU Yuanming, et al.Numerical analysis of wind loads about photovoltaic arrays considering bending moment[J].Renewable Energy Resources,2019,37(1):46-52.
[18]张庆祝, 刘志璋, 齐晓慧, 等.太阳能光伏板风载的载荷分析[J].能源技术, 2010, 31(2): 93-95.
ZHANG Qingzhu, LIU Zhizhang, QI Xiaohui, et al.Solar photovoltaic panels wind load testing and analysis[J].Energy Technology, 2010, 31(2): 93-95.