沙漠环境对光伏组件的影响研究

STUDY ON INFLUENCE OF DESERT ENVIRONMENT ON PHOTOVOLTAIC MODULES

在沙漠地区对相对湿度、温度、风速、大气压力以及辐射强度实时监测一年,分析环境参数与辐照强度关系;在风洞中模拟沙漠环境,测试不同沙尘浓度过程中的光伏组件输出功率以及沙尘沉降在光伏组件表面后的输出功率,对二者功率损失率进行对比分析;在实验室进行透过率实验,分析不同沙尘浓度对透过率影响。结果发现:1)相对湿度与辐射强度有较高相关性,在光伏组件表面有积尘的情况下升高相对湿度,光伏组件功率损失率升高。2)沉降在光伏组件表面的沙尘对功率损失率的影响高于空气中有沙尘浓度时光伏组件功率损失率。3)随着沙尘浓度升高,透过率降低,最低降幅16%。

In the desert area,the relative humidity,temperature,wind speed,atmospheric pressure and radiation intensity were monitored in real time for one year,and the relationship between environmental parameters and radiation intensity was analyzed. Simulate the desert environment in the wind tunnel,test the output power of photovoltaic modules in the process of different dust concentration and the output power after the dust settling on the surface of photovoltaic modules,and make a comparative analysis of the power loss rates of the two. Experiments were conducted in the laboratory to analyze the influence of different dust concentrations on the transmittance. The results show that:1)the relative humidity is highly correlated with the radiation intensity,and the power loss rate of photovoltaic modules increases when the relative humidity is increased under the condition that dust accumulates on the photovoltaic modules’ surface. 2)the influence of dust settling on the surface of photovoltaic modules on power loss rate is higher than that of photovoltaic modules with dust concentration in the air. 3)with the increase of dust concentration,the transmittance decreased with a minimum decrease of 16%.