The effect of hotspot conditions on DGA key gas generation on novel insulating liquids

This paper investigates how hotspot conditions influence dissolved gas analysis results in both conventional and new insulating liquids, using an improved tube heating setup designed to eliminate headspace. Dissolved gas analysis is widely used to detect transformer faults because gases generated during thermal degradation provide insight into fault type and severity. With the increasing use of novel insulating liquids, it is important to understand whether established diagnostic tools such as IEC 60599 and the Duval Triangles remain reliable.