低倾角光伏系统自清洁增强和防热斑技术浅析  

Primary Analysis of Self-cleaning Enhancement and Anti-Heat Spotting Technology for Low Tilt Angle Photovoltaic System

作　　者：孟炳良 丁国荣 MENG Bingliang;DING Guorong(Huahui Engineering Design Group Co.,Ltd.,Shaoxing 312000,China)

机构地区：[1]华汇工程设计集团股份有限公司,浙江绍兴312000

出　　处：《绿色建筑》2025年第2期56-60,72,共6页Green Building

摘　　要：随着屋顶资源的日渐稀缺,在绿色建筑有限的可安装屋面上,一般采用光伏建筑一体化(BIPV)或附着式安装(BAPV)的方式铺设来增加光伏容量。配建光伏电站的绿色建筑,其碳减排需要通过减少发电量实现,而和工商业电站等最佳倾角相比,绿色建筑中低倾角的安装方式,满发小时数会从首年的高值逐年下降。基于红外热成像仪等检测方式,前期很难发现热斑现象,自清洁能力不足也会导致积灰问题日趋严重。就常见的带框组件,通过结合光伏专用导水夹的技术路线,进行实际安装应用后的效果分析,进行数据对比分析,得到最低提升4.1%发电量的结论,并能长期有效控制热斑形成。同时就该措施在部分安装场景中的应用,明确导水夹的有效性,并提供多类导水夹的选择建议,方便工程应用,提高存量电站的运维效率,能显著提升光伏全运营周期的总发电量。With the increasing scarcity of roofing resources,building-integrated photovoltaic(BIPV)or attached mounting(BAPV)layouts are generally used to increase PV capacity on the limited installable roofs of green buildings.The carbon emission reduction of green buildings equipped with PV power plants needs to be realised by reducing the power generation capacity,and compared with the optimal tilt angle such as commercial and industrial power plants,the number of hours of full power generation decreases year by year from the high value in the first year for low tilt angle installations in green buildings.Based on detection methods such as infrared thermal imagers,it is difficult to detect hot spot phenomena in the early stage,and the lack of self-cleaning ability can also lead to increasingly serious problems of ash accumulation.With regard to the common framed module,by combining the technical route of PV-specific waterconducting clamps,the analysis of the effect of the actual installation and application of the comparative analysis of the data,and get the conclusion that the minimum enhancement of 4.1%power generation,and can effectively control the formation of hot spots in the long term.Meanwhile,regarding the application of this measure in some installation scenarios,it clarifies the effectiveness of water-conducting clips and provides suggestions for the selection of multiple types of water-conducting clips,which facilitates the engineering application and improves the operation and maintenance efficiency of the stock of power stations,and can significantly enhance the total power generation of the PV full operation cycle.

关 键 词：绿色建筑 光伏系统 低倾角 自清洁 

分 类 号：TU18[建筑科学—建筑理论]