A body structure of AT power roll-core autotransformer

Abstract

A body structure of an AT power roll-core autotransformer relates to a body of a transformer. Insulation strength, an overload ability, an anti-short circuit ability, a high loss, etc. of a conventional autotransformer body structure cannot meet requirements of an electric railway. An iron core of the body structure of the AT power roll-core autotransformer is a single frame closed roll core structure, vertical columns of the iron core are iron core columns, and horizontal columns of the iron core are iron yokes. A plurality of concentric coils are wound around each iron core column, and upper and lower ends of each coil are both provided with insulation end rings. A lower end of a lower insulation end ring and an upper end of an upper insulation end ring are both provided with iron yoke insulation plates. Pressing devices are disposed on the upper iron yoke insulation plate, and integrally press the coil, the insulation end ring, and the iron core as a whole. The present technical solution uses the body structure of the roll-core autotransformer to enhance the insulation property and heat dispersion property, to improve the overload ability and the anti-short circuit ability of the transformer, to reduce the loss value of the transformer, and to meet the special requirements of the electric railway.

Description

technical field [0001] The invention relates to a transformer body. Background technique [0002] With the continuous development of electrified railways, especially the rapid development of high-speed and heavy-duty railways, the AT power supply method has been recognized and affirmed, and the AT power supply autotransformer has developed rapidly. In order to meet the requirements of high overload, frequent short circuit, low impedance and low loss of fast railway traction lines. Conventional autotransformer body structure is difficult to meet the requirements of electrified railway due to design limitations, insulation strength, overload capacity, short-circuit resistance and high loss. Contents of the invention [0003] The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions, and to provide an AT power supply wound core autotransformer body structure, so as to improve the in...

AI Technical Summary

Problems solved by technology

Conventional autotransformer body structure is difficult to meet the requirements of electrified railway due to design limitations, insulation strength, overload capacity, short-circuit resistance capacity and high loss.

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