What is the transformer oil degassing process in power transformers?

The transformer oil degassing process in power transformers involves the removal of dissolved gases, primarily hydrogen and moisture, from the insulating oil. This is typically achieved through a combination of heating and vacuum techniques, which lower the boiling point of the gases, allowing them to escape. Effective degassing enhances the dielectric strength of the transformer oil, reduces the risk of electrical breakdown, and improves the overall reliability and performance of the power transformer.