低纬度下双面光伏发电增益分析研究

Analysis of Bifacial Gain in Energy from Photovoltaic Power Generation at Low Latitude

目前关于双面发电增益(Bifacial GaininEnergy,BGE)研究大多集中在北半球30°以上的高纬度区域,并且几乎没有关于BGE与纬度之间相关性的研究。因此,需要补充BGE在低纬度的研究并且分析BGE与纬度之间的联系。采用实证数据验证了使用PVsyst模拟结果计算双面发电增益的可行性。其次,使用PVsyst计算了在30°S-30°N之间13个地点所对应于不同安装条件下的BGE。分析纬度对于BGE的影响,发现在赤道处的BGE最大。建立了纬度与BGE之间的联系,并且通过以5°纬度为间隔建立了在低纬度30°S-30°N之间的BGE模型深化研究,使用所建立的模型计算数据与第三方的研究数据进行对比,误差比例在4%以内,验证了模型的可靠性。

At present,the research on bifacial gain energy(BGE)is mostly concentrated in the high latitudes above 30°in the northern hemisphere.Moreover,there are few studies on the correlation between BGE and latitude.Therefore,it is necessary to supplement the research of BGE in low latitude and analyze the relation-ship between BGE and latitude.The feasibility of using PVsyst simulation results to calculate the double-sided power generation gain is verified by empirical data.Secondly,PVsyst is used to calculate the BGE correspond-ing to different installation conditions at 13 locations between 30°S-30°N.The greatest impact on BGE is found at the equator.The relationship between latitude and BGE is established,and the BGE model between low latitude 30°S-30°N is established at an interval of 5°latitude to deepen the research.The calculated data of the model is compared with the research data of the third party and the error ratio is within 4%,which verifies the reliability of the model.