Low-high-voltage transformer winding structure and transformer

Abstract

The low-high-high-voltage transformer winding structure comprises a low-voltage winding, an inner high-voltage winding and an outer high-voltage winding which are arranged from inside to outside, the inner high-voltage winding comprises an inner high-voltage winding upper branch, an inner high-voltage winding lower branch, and the outer high-voltage winding comprises an outer high-voltage winding upper branch and an outer high-voltage winding lower branch. A high-voltage winding of a transformer is split into an inner high-voltage winding and an outer high-voltage winding, and the outer high-voltage winding and the inner high-voltage winding are connected in parallel through an upper branch and a lower branch; the inner high-voltage upper branch is connected with the outer high-voltage upper branch, and the inner high-voltage lower branch is connected with the outer high-voltage lower branch. According to the novel low-high winding arrangement mode provided by the invention, the reactance value of the transformer winding or the reactance height of the winding can be reduced, and meanwhile, the use amount of winding materials is not increased or even reduced.

Description

technical field [0001] The invention belongs to the technical field of power system equipment manufacturing and transformers, and particularly relates to a low-high-voltage transformer winding structure. Background technique [0002] In the design of traditional power transformers, the high-low-high winding arrangement can be formed by splitting the high-voltage windings into inner high-voltage windings and outer high-voltage impedances to reduce the short-circuit impedance of the transformer or reduce the height of the winding reactance, but for high-voltage power For transformers, the high-low-high winding arrangement can significantly increase the material usage of the windings. SUMMARY OF THE INVENTION [0003] In order to solve the above-mentioned technical problems, the present invention proposes a low-high-voltage transformer winding structure and a technical solution of the transformer to solve the above-mentioned technical problems. [0004] The first aspect of t...

AI Technical Summary

Problems solved by technology

[0002] In the design of traditional power transformers, high-voltage windings can be divided into internal high-voltage windings and external high-voltage impedances to form a high-low-high winding arrangement to reduce the short-circuit impedance of the transformer or reduce the height of the winding reactance, but for high-voltage power Transformers, a high-low-high winding arrangement can significantly increase the material usage of the windings

Images