How is sludge removed from wind turbine transformer oil?

Sludge is removed from wind turbine transformer oil through a combination of filtration and oil regeneration processes. Filters capture sludge particles, while chemical treatments during regeneration break down and neutralize sludge-forming compounds. Vacuum degassing may also aid in the removal of moisture and gases that contribute to sludge formation, ensuring the oil remains clean and effective for long-term use.