Long-term degradation rate of crystalline silicon PV modules at commercial PV plants: An 82-MWp assessment over 10 years,Progress in Photovoltaics

当前位置： X-MOL 学术 › Prog. Photovoltaics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Long-term degradation rate of crystalline silicon PV modules at commercial PV plants: An 82-MWp assessment over 10 years
Progress in Photovoltaics ( IF 8.0 ) Pub Date : 2021-08-03 , DOI: 10.1002/pip.3456
Julio Pascual ₁ , Francisco Martinez‐Moreno ₂ , Miguel García ₁ , Javier Marcos ₁ , Luis Marroyo ₁ , Eduardo Lorenzo ₂

Affiliation

Due to high competitiveness in the PV sector, despite the low degradation rate of crystalline silicon PV modules (below 0.5%/year), it is still important for utilities to know its actual value due to its impact on energy yield and hence, profitability, over the lifetime of a PV plant. However, uncertainties related to both the influence of downtime periods due to problems that may appear under normal operation of a commercial PV plant and to the measurement of degradation rates at PV plant level make this a challenging task. In order to obtain a significant value, in this paper, three measuring methods with different uncertainty sources are used for 82 MWp of PV modules on different locations in Spain and Portugal over 10 years. According to the different methods used and PV plants analyzed, excluding PV plants with problems, a range of degradation rates between 0.01 and 0.47%/year has been found. The overall average value observed is 0.27%/year. The findings of this work have also revealed the great importance of good operation and maintenance practices in order to keep overall low degradation rates.

中文翻译：

商业光伏电站晶体硅光伏组件的长期退化率：10 年 82-MWp 评估

由于光伏行业的高竞争力，尽管晶体硅光伏组件的退化率较低（低于 0.5%/年），但由于其对能源产量和盈利能力的影响，公用事业公司了解其实际价值仍然很重要，在光伏电站的整个生命周期内。然而，由于商业光伏电站正常运行下可能出现的问题而导致的停机时间影响以及光伏电站级别的退化率测量的不确定性使这成为一项具有挑战性的任务。为了获得显着的值，本文对西班牙和葡萄牙不同地点的 82 MWp 光伏组件 10 年使用了三种不同不确定源的测量方法。根据使用的不同方法和分析的光伏电站，排除存在问题的光伏电站，已发现降解率介于 0.01 至 0.47%/年之间。观察到的总体平均值为 0.27%/年。这项工作的结果还揭示了良好的操作和维护实践对于保持整体低降解率的重要性。

更新日期：2021-08-03

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11