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A Review of Dissolved Gas Analysis in Power Transformers

Carolina Levresse, Gabriella Chillika, Anna Minoti

Transformers' Dissolved Gas Analysis (DGA) can shed light on the thermal and electrical stressors they endure. transformers that are submerged in oil. DGA is able to identify transformer failures before they become more serious. damage. Additionally, DGA is a sensitive and trustworthy method for identifying impending fault conditions in oil-immersed transformers. The several techniques created for examining these gases and determining their importance include Key Gas, the Dornenburg, Rogers, Nomograph, IEC, Duval, and CIGRE ratios. This research contrasts how well various techniques work at reading transformer conditions.