What oil treatment technologies are used in transformers?

Oil treatment technologies for transformers include filtration, dehydration, degassing, and regeneration. Filtration removes particulate contaminants using mechanical filters. Dehydration eliminates moisture through vacuum drying or adsorption methods. Degassing extracts dissolved gases that may indicate faults, using vacuum processes. Regeneration involves chemical treatments to remove acids, sludge, and oxidation products, restoring the oil’s dielectric properties. Advanced technologies use online oil treatment systems that continuously purify the oil during operation, enhancing efficiency and reducing maintenance downtime.