Photovoltaic energy is the renewable energy with the greatest growth and use. The tendency of the last years is directed toward the formation of increasingly larger plants, which implies that optimizing their maintenance is becoming extremely important. Aerial thermography has become a convenient quality assessment tool for photovoltaic power plants, being reliable, cost effective, and time saving. However, it is essential to be aware of its strengths and limitations in order to apply and interpret the results correctly. This paper presents a study about the influence of spatial resolution of thermographic images on the severity of failures, evaluating the results obtained in a set of experimental aerial and manual inspections performed in a 3 MW PV plant in Spain. The research analyzes how aerial thermography should be arranged as a function of the thermographic camera and lens used with the aim of satisfying the resolution requirements. Indications about the correct procedure to perform aerial thermographic inspections are also provided.

中文翻译：

---

光伏电站航空热成像检查中图像分辨率的影响


光伏能源是增长和使用量最大的可再生能源。近年来的趋势是建立越来越大型的工厂，这意味着优化其维护变得极其重要。航空热成像技术可靠、经济、省时，已成为光伏电站便捷的质量评估工具。然而，为了正确应用和解释结果，必须了解其优点和局限性。本文介绍了热成像图像的空间分辨率对故障严重程度的影响的研究，评估了在西班牙 3 MW 光伏电站进行的一系列实验性空中和手动检查所获得的结果。该研究分析了航空热成像应如何根据所使用的热成像相机和镜头进行布置，以满足分辨率要求。还提供了有关执行航空热成像检查的正确程序的说明。