what is transformer oil regeneration?

Transformer oil regeneration is a process aimed at restoring the insulating properties of used transformer oil, which degrades over time due to thermal, electrical, and chemical stresses. This process typically involves the removal of contaminants, such as water, acids, and particulate matter, through techniques like vacuum distillation, adsorption, or filtration. Regenerating transformer oil enhances its performance, extends the lifespan of transformers, and ensures reliable operation in electrical systems.