Winding structure of traction transformer for electrified railway v/v connection

Abstract

A winding structure of a V / V traction transformer of an electrified railway relates to the technical field of transformer design and manufacture. It is characterized in that the high-voltage regulating area of ​​the transformer is placed outside the high-voltage winding as a separate regulating winding to improve the ampere-turn balance of the winding, and pads are added to the inside and outside of the regulating winding to increase the width dimension of the winding. By changing the winding structure of the existing three-phase V / V traction transformer, the invention can greatly improve the anti-short circuit capability of the transformer, has high reliability, and meets the use requirements of railway traction lines.

Description

technical field [0001] The invention belongs to the technical field of design and manufacture of transformers, in particular to a winding structure of a V / V traction transformer used for electrified railways. Background technique [0002] Railway traction transformer technology has made great progress in China in recent years, but the frequent overload and short circuit on the railway also put forward high requirements on the transformer itself. The relevant patented technologies referred to this time are: The winding structure of the single-phase traction transformer announced on August 6, the patent number is 200710160460.0; A 220kV class single-phase railway traction transformer body structure announced on August 3, the patent number is 200410001737.1; a Vv connection combined traction transformer announced by the People's Republic of China on June 13, 2007, the patent number is 200620019334.4. Contents of the invention [0003] In order to improve the anti-short circu...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the anti-short circuit capability of the transformer and overcome the shortcoming that the winding structure of the typical two-turn non-excitation voltage regulating transformer cannot well control the ampere-turn balance of the winding, the present invention provides a transformer winding structure, which can well control the ampere-turn of the winding balance, so as to achieve the purpose of reducing the short-circuit mechanical force of the transformer

Images