What are transformer oil purification systems used for in power transformers?

Transformer oil purification systems are used for in power transformers to remove impurities such as water, gases, and particulate matter from the insulating oil. This purification process enhances the dielectric strength and thermal conductivity of the oil, thereby improving the overall performance and reliability of the transformer. Regular maintenance through purification helps extend the lifespan of the transformer and ensures safe operation under varying electrical loads.