University of Oulu

C. Schuss, K. Remes, K. Leppänen, B. Eichberger and T. Fabritius, "Thermography of Photovoltaic Panels and Defect Detection Under Outdoor Environmental Conditions," 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2021, pp. 1-6, doi: 10.1109/I2MTC50364.2021.9460099

Thermography of photovoltaic panels and defect detection under outdoor environmental conditions

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Author: Schuss, Christian1; Remes, Kari1; Leppänen, Kimmo2;
Organizations: 1Optoelectronics and Measurement Techniques (OPEM) Research Unit, University of Oulu, Finland
2Mettler-Toledo GmbH, SBU AutoChem, Switzerland
3Institute of Electronic Sensor Systems, Graz University of Technology, Austria
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 4 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-10-08


This paper investigates the possibility of detecting defects in photovoltaic (PV) cell and panels under harsh outdoor environmental conditions with the help of synchronized thermography (ST). Infrared (IR) images are obtained under changing solar radiation levels, moderate wind speeds and ambient temperatures below zero degree Celsius with the help of a portable IR-camera. We demonstrate that IR-images obtained under harsh environmental conditions provide the same information as IR-images recorded under common environmental conditions. We elaborate the differences in parameters such as measurement time and region-of-interest (ROI) which need to be adjusted when carrying out measurements under harsh conditions. Our technique allows maintenance staff to carry out measurements, both, during summertime and wintertime, on the site of a PV power plant to identify PV panels with potential defects.

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Series: IEEE International Instrumentation and Measurement Technology Conference
ISSN: 2642-2069
ISSN-E: 2642-2077
ISSN-L: 2642-2069
ISBN: 978-1-7281-9539-1
ISBN Print: 978-1-7281-9540-7
Article number: 9460099
DOI: 10.1109/I2MTC50364.2021.9460099
Host publication: 2021 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2021, 17-20 May 2021, Glasgow, United Kingdom
Conference: IEEE International Instrumentation and Measurement Technology Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: Prof. Tapio Fabritius is partially supported by Academy of Finlands FIRI funding (grant no. 320017).
Academy of Finland Grant Number: 320017
Detailed Information: 320017 (Academy of Finland Funding decision)
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