Diagnosis and Analysis of a 220 kV Transformer Winding Deformation Defect

This article introduces a defect of severe deformation of the medium voltage winding of a 220 kV transformer discovered through routine tests. Analyzed the reasons for the deformation of the medium voltage winding of the transformer. Suggested daily maintenance. To avoid similar defects, product design and manufacturing processes should be optimized when designing large transformers. Meanwhile, improving the operating environment of transformers is also an important measure.