Analysis on the Effect of Shading on the Characteristics of Large-scale on-grid PV System in China

Yunlin Sun, Xiangzhi Li, Ruijiang Hong, Hui Shen

School of Physics and Engineering, Sun Yat-Sen University, Guangzhou, China.

DOI: 10.4236/epe.2013.54B042                

Abstract

Because of rich solar resource and low land cost, a lot of large-scale ground-based grid-connected PV systems have been built in Northwest China. In this paper, some shading phenomena on a grid-connected PV system inNorthwest Chinaare classified and analyzed. Through the I-V curve test of PV modules, it can be seen that dust influence system performance of the grid-connected PV system. And the experimental results have shown that shading could affect the electrical properties of PV modules. Meanwhile, same shading area on different shading positions could have different impacts on the identical PV module.

Keywords

Large-scale; Ground-based on-grid PV System; Shading; System Performance

Conflicts of Interest

The authors declare no conflicts of interest.

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