该文针对光伏电站现场的灰成分,进行不同粒径和不同成分积灰对光伏组件输出性能影响实验,基于实验数据建立积灰密度、太阳辐照度与光伏组件输出功率以及工作电流的拟合模型。实验结果表明,光伏组件开路电压和最佳工作电压受积灰性质波动较小,光伏组件最佳工作电流受积灰性质影响较大,光伏组件最大输出功率衰减主要是受到光伏组件最佳工作电流降低的影响,积灰粒径分布对光伏组件最大输出功率和最佳工作电流的影响远大于积灰成分的影响。
Abstract
In this paper, the influence of different particle sizes and different components of ash deposition on the output performance of photovoltaic modules is studied. Based on the experimental data, the fitting model of ash deposition density, solar irradiance, photovoltaic module output power and working current is established. The experimental results show that the open circuit voltage and the optimal working voltage of the photovoltaic module are less affected by the ash deposition property, and the optimal working current of the photovoltaic module is greatly affected by the ash deposition property. The maximum output power attenuation of the photovoltaic module is mainly affected by the decrease of the optimal working current of the photovoltaic module. The influence of the ash particle size distribution on the maximum output power and the optimal working current of the photovoltaic module is much greater than the influence of the ash composition.
关键词
光伏组件 /
输出功率 /
积灰性质 /
工作电流
Key words
photovoltaic module /
output power /
ash deposition properties /
working current
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