吕梁市光伏发电系统效率提升研究
杨洁，方正飞，张辰锐，刘艳娥
（吕梁学院物理系，山西 吕梁 033000）
摘要： 对影响光伏发电系统发电量的因素进行了研究，通过实验方法确定了倾角、方位角和局部阴影遮挡对吕梁市
光伏组件发电量的影响。结果表明：在接近地理纬度的角度范围内，倾角对光伏组件发电功率的影响在12%左右；调整
方位角对光伏组件功率的影响较大，在合理跟踪方位角的情况下，可使光伏组件发电功率增长1 倍；遮挡对光伏组件的
发电功率影响很大，随着遮挡面积的逐渐增大，串联光伏组件受遮挡影响更大，功率曲线下降速度更快。通过实验得出，
可在倾角、方位角和局部阴影遮挡方面进行优化设计从而提升光伏发电系统的发电量。
关键词： 光伏系统；发电功率；倾角；方位角；阴影遮挡
中图分类号： TK51     文献标识码： A     文章编号： 2095-0802-(2022)01-0041-04
Study on Efficiency Improvement of Photovoltaic Power Generation System in Lvliang City
YANG Jie, FANG Zhengfei, ZHANG Chenrui, LIU Yane
(Department of Physics, Lvliang University, Lvliang 033000, Shanxi, China)
Abstract: This paper studied the factors affecting the generating capacity of photovoltaic power generation system, and
determined the effects of incidence, azimuth and local shadow shading on the generating capacity of photovoltaic modules in
Lvliang City. The results show that in the angle range close to the geographical latitude, the influence of inclination angle on the
generated power of photovoltaic modules is about 12%; adjusting the azimuth has a great impact on the power of photovoltaic
modules, under the condition of reasonable tracking the azimuth, the generated power of photovoltaic modules can be doubled;
shielding has a great impact on the generated power of photovoltaic modules, with the gradual increase of shielding area, series
photovoltaic modules are more affected by shielding, and the power curve decreases faster. Through experiments, it is concluded
that the optimal design can be carried out in terms of inclination, azimuth and local shadow occlusion, so as to improve the
generating capacity of photovoltaic power generation system.

Key words: photovoltaic system; generated power; incidence; azimuth; shadow shading