PROJECT TITLE :

Development and evaluation of a new DGA diagnostic method based on thermodynamics fundamentals

ABSTRACT:

The dissolved gas analysis (DGA) is a well-accepted power transformer Predictive Maintenance technique. But, despite the importance of the technique, classical diagnostic methods were developed from observations of simplified thermodynamic and compositional models. This paper presents the development of a DGA diagnostic method primarily based on a thermodynamic model that features a contribution inspired on the kinetics of the method. The performances of the new phenomenological proposition and of classical DGA diagnostic strategies are compared and discussed. Additionally, a general procedure for the applying of the new diagnostic methodology is described.