DGA Course – e-lesson #12: Special lesson – Dr. Michel Duval. Survey of important contributions reviewed by Dr. Michel Duval.
Hosted by: Marius Grisaru / Master's level
This special lesson is presented on the Master’s level and it focuses on the correct usage of Duval’s diagnostic methodology. After the live broadcasting, the lesson stays available on demand.
This lesson provides an overview of the pioneering work of Dr. Michel Duval, a leading expert in dissolved gas analysis (DGA) for power transformers. Duval developed standardized methods and terminology that are now widely used across the industry, enabling consistent diagnosis of transformer faults. He introduced the concept of triangles and pentagons to interpret DGA data, correlating gas concentrations with fault types and severity. Duval also made important contributions to gas-in-oil standards and round-robin testing to improve measurement accuracy. Additionally, he explored online DGA technologies and the unique considerations for non-mineral transformer oils.
This lesson highlights Duval’s lasting impact on transformer condition monitoring and the continued relevance of his analytical frameworks.
🔗 Secure Your Seat Now!
The content of this lesson is fully vendor-agnostic, but it is sponsored by Delta-X Research.
About the author
Marius Grisaru
Electroanalytical chemist, expert on oil test domain focus on dissolved gas analysis from planning, sampling, testing to diagnosis. Marius has a vast worldwide experience on all relevant aspects and debates them among the fellow experts around the globe. Enthusiast educator of scientific subjects.