光伏组串东西向阴影遮挡整改方案的讨论

DISCUSSION ON RECTIFICATION SCHEME FOR EAST-WEST DIRECTION SHADOW OCCLUSION OF PV STRINGS

在山地光伏电站中,当光伏组串未采用随坡就势的方式布置在东、西坡时,由于多种原因会造成施工完成后东、西向相邻光伏组串之间存在阴影遮挡现象。以实际工程案例为基础,针对工程施工完成后现场出现的光伏组串阴影遮挡问题提出了多个整改方案,通过PVsyst软件对各整改方案实施后光伏组串的发电量情况进行了模拟,并与整改前光伏组串的发电量情况进行对比,得出最优的整改方案。分析结果表明,所提出的整改方案有效可行,且能够明显的提升发电效益。研究结果可为解决光伏电站中光伏组串东西向阴影遮挡问题提供参考。

In the mountain PV power station,when the PV strings are not arranged on the east and west slopes in the way of adapting to the situation with the slope,there will be shadow occlusion between the adjacent PV strings in the east-west directions after the construction is completed due to a variety of reasons. Based on the actual project case,several rectiflcation schemes are proposed for the shadow occlusion of PV strings on the site after the project construction is completed. The power generation of PV strings after the implementation of each rectiflcation scheme is simulated by PVsyst software,and compared with the power generation of PV strings before the rectiflcation,the optimal rectification scheme is obtained. The analysis results show that the proposed rectification scheme is effective and feasible,and can signiflcantly improve the power generation beneflt. The research results can provide a reference for solving the problem of east-west direction PV string shadow occlusion in PV power stations.