Excerpt: Practical guide Thermography for photovoltaic plants
Motivation and reasons for using thermography.
Detecting poor quality on the markets.
In the boom years of photovoltaics, the order books were full and solar engineers were hardly able to keep up. This meant that it was not just highly trained trade experts that were filling orders. Large numbers of cross-trade and inadequately qualified contractors helped to meet the huge demand. The consequences are still being felt today: Construction errors, inadequate solar electricity yields from the plants, up to security and fire risks. It is primarily the plant operator who suffers. However, a qualitatively inferior implementation also reflects on the the company doing the work, potentially allowing damage claims to be allowed based on a thermographic analysis.
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Thermal irregularities point to a possible loss of electricity yield.
Faulty modules after a lightning storm.
Benefit: insurance cover.
Up to now, faulty bypass diodes were extremely difficult to localise after storms. Thermography is an easy and quick tool for identifying this type of damage. The costs for rectifying the fault are generally borne by the insurance company.
Practical guide contents
- Motivation and reasons for using thermography
- Fault images and causes
- Tips & tricks on measurement and avoiding errors
- What does the ideal thermal imager look like?
- testo thermal imagers for solar thermography
- Thermal imagers – ideal tools for the inspection of photovoltaic plants