What is the process of oil filtration of transformer oil in power transformers?

The process of oil filtration of transformer oil in power transformers involves removing impurities and moisture from the oil to enhance its dielectric strength and overall performance. This is typically achieved using a combination of physical and chemical methods, such as vacuum filtration, centrifugation, and adsorption. The filtered transformer oil is then tested for quality parameters to ensure it meets the required standards for safe and efficient operation of the power transformer.