Posted in | News | Solar Energy

UAV-based Thermal Monitoring for Solar Farm Efficiency Analysis

In a recent article published in the journal Engineering Science and Technology, an International Journal, researchers explored the application of unmanned aerial vehicles (UAVs) equipped with thermal imaging sensors to analyze solar farm efficiency. Their research aimed to validate the feasibility and effectiveness of this approach in detecting temperature variations, calculating photovoltaic (PV) efficiency, and identifying performance issues in solar panels.

solar farm

Image Credit: Roschetzky Photography/Shutterstock.com

Background

Solar energy is a clean and renewable power source with numerous environmental and economic benefits. However, solar panels, the critical components of solar farms, can be impacted by various factors that reduce their efficiency and lifespan. These factors include temperature fluctuations, dust accumulation, shading, degradation, and faults. Therefore, regular and precise monitoring and analysis of solar panel performance are essential to optimize energy output and preempt potential failures.

Traditionally, solar farm monitoring has relied on manual inspections and periodic assessments, which are time-consuming and labor-intensive. However, integrating UAVs with thermal imaging sensors has revolutionized solar farm analysis in recent years.

Thermal imaging is a technique that captures infrared radiation emitted by objects and converts it into visible images displaying temperature distribution. UAVs equipped with thermal cameras can capture aerial thermal images of solar panels, enabling quick, accurate, and cost-effective temperature measurement, anomaly detection, and PV efficiency calculation.

About the Research

In this paper, the authors developed a novel methodology for analyzing solar farms' efficiency using UAV-based thermal monitoring. They selected a solar farm in Konya, Türkiye, for their study. This farm spans 5.59 hectares and comprises 12,962 solar panels arranged in 91 arrays.

The study used a multirotor UAV (DJI Matrice 300 RTK) with an integrated camera (DJI Zenmuse H20T), which features thermal, wide-angle, and 200x zoom capabilities. The UAV also includes a real-time kinematic (RTK) positioning system that delivers high-precision aerial photographs with centimeter-level accuracy.

The researchers conducted low-altitude photogrammetric flights with the UAV over the solar farm at three different times: morning, midday, and afternoon. They captured thermal images of the solar panels in radiometric joint photographic experts group (R-JPEG) format with a resolution of 640x512 pixels. These images were then converted into a tagged image file format (TIFF) with reflectance values and processed using photogrammetric methods to produce thermal orthomosaic data-high-resolution images that combine multiple overlapping images into a single dataset.

The thermal orthomosaic data were segmented using image processing techniques to extract the geometry and temperature of each solar panel. Finally, the study calculated the PV efficiency of each panel using a formula that relates the panel efficiency to the panel temperature, the reference temperature, and the panel's temperature coefficient.

Research Findings

The outcomes revealed significant variations in the temperature and efficiency of the solar panels throughout the day and across the solar farm. The solar panels' lowest and highest recorded temperatures were 6.09 °C and 66.37 °C, respectively. Similarly, the PV efficiencies varied, with the lowest recorded efficiency at 17.03% and the highest at 18.25%. Therefore, UAV-based thermal monitoring proved effective for solar farms' thermal monitoring and efficiency analysis. UAVs could capture high-resolution thermal data of solar panels, allowing for calculating PV efficiency and identifying performance issues.

The authors noted that several factors influenced the solar panels' temperature and efficiency, including the sun's position, cloud cover, and orientation of the panels. The highest efficiencies were recorded in the afternoon when the temperature was lower, and the solar incidence angle was gentler. The study identified certain panels with lower efficiency, indicating potential performance issues or degradation.

Applications

This research demonstrated the extensive potential of UAV-based thermal monitoring for solar farm management. This approach facilitates rapid, accurate, and comprehensive efficiency analysis of solar farms, helping to optimize energy production and enhance economic viability.

Detecting temperature variations and anomalies in solar panels can promptly identify and address performance issues, prevent failures, reduce operational costs, and improve safety. Furthermore, regular data collection enables the tracking of long-term performance trends and the evaluation of maintenance strategies.

Conclusion

In conclusion, the novel approach showcased the significant advantages of using UAVs for the thermal monitoring of solar farms, paving the way for improved efficiency and performance management in the renewable energy sector.

The researchers highlighted several factors that could affect the temperature and efficiency of solar panels, such as the sun's position, cloud cover, and panel orientation.

Moving forward, they suggested that future research should focus on enhancing the resolution of thermal cameras, developing automatic segmentation and analysis methods, and integrating additional sensors such as optical and LIDAR for more comprehensive solar farm monitoring.

Disclaimer: The views expressed here are those of the author expressed in their private capacity and do not necessarily represent the views of AZoM.com Limited T/A AZoNetwork the owner and operator of this website. This disclaimer forms part of the Terms and conditions of use of this website.

Source:

Akay, S, S., Özcan, O., Özcan, O., Yetemen, Ö. Efficiency analysis of solar farms by UAV-based thermal monitoring. Engineering Science and Technology, an International Journal, 2024, 53, 101688. https://doi.org/10.1016/j.jestch.2024.101688

Muhammad Osama

Written by

Muhammad Osama

Muhammad Osama is a full-time data analytics consultant and freelance technical writer based in Delhi, India. He specializes in transforming complex technical concepts into accessible content. He has a Bachelor of Technology in Mechanical Engineering with specialization in AI & Robotics from Galgotias University, India, and he has extensive experience in technical content writing, data science and analytics, and artificial intelligence.

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Osama, Muhammad. (2024, June 06). UAV-based Thermal Monitoring for Solar Farm Efficiency Analysis. AZoCleantech. Retrieved on June 22, 2024 from https://www.azocleantech.com/news.aspx?newsID=34933.

  • MLA

    Osama, Muhammad. "UAV-based Thermal Monitoring for Solar Farm Efficiency Analysis". AZoCleantech. 22 June 2024. <https://www.azocleantech.com/news.aspx?newsID=34933>.

  • Chicago

    Osama, Muhammad. "UAV-based Thermal Monitoring for Solar Farm Efficiency Analysis". AZoCleantech. https://www.azocleantech.com/news.aspx?newsID=34933. (accessed June 22, 2024).

  • Harvard

    Osama, Muhammad. 2024. UAV-based Thermal Monitoring for Solar Farm Efficiency Analysis. AZoCleantech, viewed 22 June 2024, https://www.azocleantech.com/news.aspx?newsID=34933.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type
Submit

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.