研究目的
Investigating the application of aerial infrared thermography (aIRT) on Cadmium Telluride (CdTe) PV plants in Brazil to detect faults.
研究成果
The aIRT inspection technique is a reliable method for fault detection in CdTe PV plants, capable of identifying important problems not detectable by SCADA systems. The procedure is similar for thin-film and c-Si technologies, with the main difference being the stronger reflections on thin-film modules. The method is cost-effective and fast, suitable for large-scale PV plant inspections.
研究不足
The inspection's effectiveness is influenced by environmental conditions, such as cloud coverage and the angle of view. Reflections on thin-film modules are stronger than on c-Si modules, making clear sky conditions more critical for accurate inspections.
1:Experimental Design and Method Selection:
The study utilized aerial infrared thermography (aIRT) for inspecting a utility-scale CdTe PV power plant in Brazil. The method combines infrared thermography with unmanned aerial vehicles (UAVs) for fast and flexible inspection.
2:Sample Selection and Data Sources:
The PV plant under investigation is located in Assu, Brazil, with a capacity of 37 MW and consists of 320 thousand thin-film CdTe modules.
3:List of Experimental Equipment and Materials:
A professional UAV (DJI Phantom 3) equipped with a lightweight infrared thermographic camera (Thermoteknix MicroCAM 2) was used for the inspection.
4:Experimental Procedures and Operational Workflow:
The inspection was carried out over seven days, with flights at an altitude of 17 m to detect defects on individual PV modules. The trackers were held in a horizontal position to maintain a 90° angle of view.
5:Data Analysis Methods:
The analysis focused on identifying faults such as open circuited substrings, hot-spots caused by broken front glass, delamination faults, and modules shaded by vegetation.
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