可再生能源34节能ENERGYCONSERVATIONNO.052023定日镜参数对塔式太阳能聚光集热系统性能的影响吕彩霞(国家电力投资集团有限公司,北京100029)摘要:建立塔式太阳能热发电站聚光集热系统的数学模型,构造系统技术经济性评价指标,分析定日镜参数变化对聚光集热系统性能的影响。结果显示:定日镜长宽比变化对系统技术经济性能的影响与集热场布置有关。区域2镜子径向间距为最小间距时,随着定日镜长宽比增加,年均光热转换效率增大,平准化集热成本降低。区域3镜子径向间距为2倍最小间距时,定日镜长宽比越接近1,年均光热转换效率越高,平准化集热成本越小。关键词:塔式太阳能;聚光集热系统;定日镜形状中图分类号:TK513.1文献标识码:A文章编号:1004-7948(2023)05-0034-04doi:10.3969/j.issn.1004-7948.2023.05.009EffectofheliostatparametersonperformanceoftowersolarconcentratingheatcollectionsystemLYUCai-xiaAbstract:Themathematicalmodelofconcentratingsolarcollectorsysteminsolartowerpowerstationisestablished.Thetechnicalandeconomicevaluationindexofthesystemisconstructed.Theinfluenceofheliostatparametersontheperformanceofconcentratingsolarcollectorsysteminsolartowerpowerstationisanalyzed.Theresultsshowthattheinfluenceoftheheliostat'slength-widthratioonthetechnicalandeconomicperformanceofthesystemisrelatedtotheheliostatfieldlayout.Whentheradialdistancebetweenmirrorsinregion2istheminimum,withtheincreaseoftheheliostat'slength-widthratio,thegreatertheannualheat-lightconvertingefficiency,thesmallerlevelizedcostofheat.Whentheradialdistanceofmirrorinregion3istwotimestheminimumdistance,theclosertheheliostat'slength-widthratioisto1,thegreatertheheat-lightconvertingefficiencyisandthesmallerthelevelizedcostofheatis.Keywords:solartowerpower;concentratingsolarcollectorsystem;heliostatshape引言塔式太阳能热发电站由聚光集热系统、储热系统和发电岛组成,以定日镜场、集热塔和吸热器为主的聚光集热系统的投资成本占塔式太阳能热发电站全部投资的一半以上[1]。因此,优化聚光集热系统对降低塔式太阳能热发电站的发电成本极为重要。目前,定日镜场的布置多采用径向交错的放射栅格排列[2]方法,学者基于该布置方法对聚光集热系统进行大量的优化研究。胡甜[3]等基于...