甘肃河西太阳能光伏组件最佳倾角及辐射量研究  

Research on the best optimal tilted angle for solar photovoltaic modules and radiation in Gansu Hexi area

作　　者：王嘉媛[1,2] 尚可政[1] 王式功[1] 赵斌[2] 陈红宝[2] 李雁军[2] 

机构地区：[1]兰州大学大气科学学院,兰州730000 [2]甘肃省水利水电勘测设计研究院,兰州730000

出　　处：《中国科技论文》2015年第15期1757-1764,共8页China Sciencepaper

摘　　要：利用民勤气象站和敦煌气象站1963—1992年太阳总辐射量、水平面直接辐射量和水平面散射辐射量及其他气象条件的观测数据,采用斜面总辐射量计算公式、RETScreen软件、PVsyst软件方法,对河西两座光伏电站所在地区太阳能光伏组件最佳倾角及其光伏阵列面的辐射量数值变化进行模拟计算。结果表明：3种估算方法对河西两座光伏电站的计算结果虽然略有差异,但各月变化整体趋势一致,全年可接收到的斜面总辐射量1号光伏发电站为7 590MJ/m2,2号光伏发电站为8 454MJ/m2;各月调节至最佳倾角与全年固定倾角相比,夏、冬季节接收到的斜面总辐射量明显提高,春、秋季节的变化不大,全年接收到的斜面总辐射量提高6.0%~9.1%;对比两电站太阳能辐射转化率,发现两电站对接收到的太阳能辐射转化为电量的转化率差异较大,1号光伏发电站转化率为82.2%,2号光伏发电站转化率为65.3%,电站对接收到的辐射量转化效率对电站发电量影响较大。研究结果可为太阳能资源的合理开发利用提供参考依据。By using the relevant formulas,RETScreen software,PVsyst software and other methods,data of global solar radia-tion,direct radiation and horizontal plane scattered radiation,and other meteorological conditions observed in Minqin and Dun-huang weather stations during 1963-1992 are applied to calculate the best angle of radiation changes in the value of the PV array under the surface inclination at two solar PV power stations in Hexi area.The results show that the calculations of two west pho-tovoltaic power stations by three estimation methods have similar month trend with minor difference;the total received radiation of full year is 7 590 MJ/m2 in station 1 and 8 454 MJ/m2 in station 2.Compared the optimum angle of each month with the annual fixed angle,the significant improvement of solar energy efficiency happens in summer and winter,while the change is insignifi-cant in spring and autumn,The overall increase of efficiency is 6.0%-9.1 %.The efficiency of transforming solar energy into electricity in the two power plants is significantly different,which is 82.2% at station 1 and 65.3% at station 2.It is evident that efficiency has great impact on the power generation capacity.This study provides important references to the rational development and utilization of solar energy resources.

关 键 词：光伏电站 光伏发电 太阳总辐射量 水平面直接辐射量 水平面散射辐射量 RETScreen软件 PVsyst软件 

分 类 号：TM615[电气工程—电力系统及自动化]