Transformer winding structure

The utility model relates to a transformer winding structure, which comprises an outer winding and an inner winding. A support bar is connected between the outer winding and the inner winding, the outer winding is wound to be rectangular, and the corner of the outer winding is right-angled. The cross-sectional area of an air convection channel at the corner can be increased, the cooling space can be enlarged, the transformer cooling performance can be improved, the temperature rise can be reduced, the aging of the transformer insulation can be slowed, the service life of the transformer can be prolonged effectively, and the technical performance can be improved.