Questions pertaining to Transformer DGA and Duval Triangle

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SUMMARY

The discussion focuses on the implications of different regions in Transformer Dissolved Gas Analysis (DGA) as defined by the Duval Triangle, specifically the significance of T1, T2, and T3 regions in assessing transformer health. Participants express a need for deeper insights into how these regions correlate with transformer conditions, particularly regarding partial discharge phenomena. The conversation highlights a gap in available resources that adequately explain the health implications associated with these DGA regions.

PREREQUISITES
  • Understanding of Transformer Dissolved Gas Analysis (DGA)
  • Familiarity with the Duval Triangle methodology
  • Knowledge of transformer health indicators
  • Basic concepts of partial discharge in electrical equipment
NEXT STEPS
  • Research the implications of T1, T2, and T3 regions in Transformer DGA
  • Study the relationship between partial discharge and transformer health
  • Examine case studies on Duval Triangle applications in large power transformers
  • Explore advanced diagnostic tools for transformer condition monitoring
USEFUL FOR

Electrical engineers, transformer maintenance professionals, and anyone involved in the monitoring and analysis of transformer health using DGA techniques.

EverGreen1231
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Is anyone versed enough in Power transformer DGA and Duval triangles to know what the implications of the different regions might be? I've Googled and found many documents about the subject, but none really seem to mention what the implications might be for a transformer that tends towards T3 as apposed to T2 or T1; or what may cause a transformer to experience partial discharge. There are, of course, explanations of what these regions are, but no real in depth discussion of what they mean so far as transformer health.

Any help would be obliged.
 
Last edited:
Engineering news on Phys.org
Here are some explanations by Duval backed up by measurements on big power transformers
 
zoki85 said:
Here are some explanations by Duval backed up by measurements on big power transformers
Thank you. I'll have to wait to view it on my home machine; it seems there's some type of firewall preventing me from seeing the link.
 

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