该文研究光伏功率优化器在阴影失配情况下对建筑光伏一体化（BIPV）系统的影响。首先设计3种不同的组串遮挡方案,在已知组件表面阴影遮挡比例的基础上,对接入优化器的建筑光伏系统发电量进行仿真,并搭建实验平台,对比仿真数据和实测数据,验证仿真模型的精确性。最后以深圳安托山光伏大厦BIPV玻璃幕墙为研究对象,在对每一块组件进行全年8760 h阴影分析的基础上,分别讨论不装优化器、阴影遮挡区域加装优化器、全部加装优化器3种情况下的系统发电量。结果表明：功率优化器对建筑光伏系统发电量的提升受阴影遮挡影响,在组串受到不均匀遮挡的月份,安装功率优化器后最高可提升9.48%的发电量,且全部加装优化器情况下,可提升系统年总发电量1.13%。
Abstract
This paper investigates the impact of photovoltaic power optimizers on building integrated photovoltaics（BIPV） systems under shading mismatch conditions. First, three different string shading scenarios were designed. Based on the shading ratios on the module surfaces are known, simulations were conducted to compare the power generation with and without the optimizers. Then, an experimental platform was set up to compare the simulated data with the measured data, verifying the accuracy of the simulation model. Finally, the BIPV glass curtain wall of the Antuoshan Photovoltaic Building in Shenzhen was taken as the study object. A comprehensive shading analysis was performed on each module over the course of a year （8,760 hours）. The system power generation was discussed under three conditions： without optimizers, with optimizers installed only in shaded areas, and with optimizers installed on all modules. The results indicate that the power optimizer's impact on the power generation of building photovoltaic systems is influenced by shading. In months when the strings are unevenly shaded, installing power optimizers can increase power generation by up to 9.48%. Additionally, when all modules are equipped with optimizers, the overall system power generation increases by 1.13%.
关键词
光伏发电 /
太阳辐照 /
光伏系统 /
BIPV /
功率优化器 /
阴影遮挡
Key words
photovoltaic power generation /
solar irradiance /
PV system /
BIPV /
photovoltaic power optimizer /
shading
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基金
国家重点研发计划（2022YFB4201000）
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