Impact of Shading Area on PV System

Abstract This paper mainly studies the effect of shading area on the voltage, current and power of PV system. This study mainly conducted experiments and then collected data. Through the processing of the data, the trends of voltage, current and power of PV under different shading areas are analyzed. The main equipments for the experiment were a solar panel, a photovoltaic power generation circuit experiment box, and some cardboard and wires used for shielding. Let the photovoltaic panels run at the optimal operating point. Under the condition that the illumination conditions are basically unchanged, the voltage, current and power data of photovoltaic power generation under different shading areas are recorded by occluding different areas of the solar panel. The research results show that as the shading area continues to increase, the voltage and current of the PV system are continuously weakened. The power measured indirectly approaches zero as the voltage and current decrease. Therefore, shading area is one of the major factors affecting PV systems. The results of this study provide a theoretical basis for the installation environment of solar panels and the periodic cleaning of obstructions.

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