The Issue of Shading Photovoltaic Installation Caused by Dust Accumulation on the Glass Surface

M. Rudnicka, E. Klugmann-Radziemska
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引用次数: 1

Abstract

Abstract The issue of accumulation of dust and other pollutants on the surface of photovoltaic modules was thoroughly analysed over the years. One of the first surveys in this field of knowledge linked pollutant accumulation on the module surface with transmittance loss of its glass covering, which leads to lessened amount of solar radiation reaching solar cells. First stage of this accumulation process is linear transparency loss, and second stage - molecule agglomeration and settlement some grains on the already existing layer of dust. Additionally, the pace of working parameters reduction for photovoltaic installation is influenced by the type of dust itself. Molecules with smaller grains cover the surface much more densely, therefore limiting the amount of light passing though the top glass layer far more than molecules with bigger grains. The aim of the carried out study was to find the relationship between dust surface density and change in electrical parameters. Such approach makes it possible to compare electrical and physical parameters of different photovoltaic modules. Additionally, glass coverage itself was noted to have a significant impact on the overall decrease in working parameters of PV modules.
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玻璃表面积灰引起的遮阳光伏安装问题
摘要:对多年来光伏组件表面粉尘等污染物积累问题进行了深入分析。这一知识领域的首批调查之一将组件表面的污染物积累与其玻璃覆盖物的透射率损失联系起来,这导致到达太阳能电池的太阳辐射量减少。这种积累过程的第一阶段是线性透明度损失,第二阶段是分子聚集和一些颗粒沉降在已经存在的粉尘层上。此外,光伏装置工作参数降低的速度受粉尘本身类型的影响。颗粒较小的分子覆盖在玻璃表面的密度要大得多,因此比颗粒较大的分子更能限制通过玻璃顶层的光量。进行研究的目的是找出粉尘表面密度与电气参数变化之间的关系。这种方法使得比较不同光伏组件的电学和物理参数成为可能。此外,玻璃覆盖本身对光伏组件工作参数的整体降低有重大影响。
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