积灰光伏板表面散射光强度分布实验研究  

Experimental study on intensity distribution of scattered light on the surface of dust accumulation photovoltaic panels

作　　者：李忻哲 高爱华[1] 秦文罡[1] 王化超 LI Xinzhe;GAO Aihua;QIN Wengang;WANG Huachao(School of Opto-electronic Engineering,Xi′an Technological University,Xi′an,Shaanxi 710021,China)

机构地区：[1]西安工业大学光电工程学院,陕西西安710021

出　　处：《光电子．激光》2023年第3期284-290,共7页Journal of Optoelectronics·Laser

基　　金：陕西省重点研发计划(2019GY-063)资助项目。

摘　　要：针对现有光伏板积灰程度检测方法中存在难以直接对光伏板透射率进行测量和环境光干扰大的问题,提出了一种基于散射光强度的光伏板积灰密度测量方法。该方法使用调制的主动光源,基于角分辨散射(angle-resolved scattering,ARS)测量原理,对积灰光伏板表面散射光强度空间分布进行研究。根据散射光强度的分布规律,建立特定立体角范围的散射光强度与光伏板积灰密度之间的关系。实验结果表明,当探测器放置在光源同侧时,系统线性度更好,散射光强度随着光伏板积灰密度的增加先线性增长,随后增长逐渐放缓,最终趋于一定值。本方法抗环境光干扰能力强,能直观地表征光伏板的积灰状态。A method for measuring the density of dust accumulation on photovoltaic panels based on scattered light intensity is proposed to solve the problems of existing methods for detecting the degree of dust accumulation on photovoltaic panels,which have difficulties in directly measuring the transmittance of photovoltaic panels and high interference from ambient light.Modulated light is used in this method to investigate the spatial distribution of scattered light intensity on the surface of dust accumulation photovoltaic panels based on the principle of angle-resolved scattering(ARS)measurement.According to the distribution law of scattered light intensity,the relationship between scattered light intensity and dust density of photovoltaic panels in a specific stereo angle range is established.The experimental results show that the linearity of the system is better when the detector is placed on the same side of the light source.The scattered light intensity increases linearly with the increase of the dust accumulation density of the photovoltaic panel,and then the growth slows down gradually and finally tends to a certain value.This method has good resistance to ambient light interference and can reflect the dust accumulation state of photovoltaic panels intuitively.

关 键 词：角分辨散射(ARS)测量 积灰密度 光伏板 调制光源 

分 类 号：TN247[电子电信—物理电子学]