Novel process structure and binding method for short-circuit resistance electrodynamic force of transformer winding

Abstract

The invention relates to a novel process structure and a method for short-circuit resistance electrodynamic force of transformer winding, in particular to a wire cake binding process method and several binding structures applied to winding manufacturing in the field of transformers. According to the novel structure and the technological method, the percent of pass of the sudden short circuit testof the transformer can reach 100% theoretically, that is to say, under the condition that the pressing nail or the pulling screw of the transformer is out of action, it can be guaranteed that a winding is not damaged. The structure and the method are simple, the effect is outstanding, and the electrical performance and the temperature rise of the transformer are not influenced.

Description

technical field [0001] A novel process structure and method for anti-short-circuit electrodynamic force of a transformer winding is a wire cake binding process method and several binding structures applied to winding manufacturing in the field of transformers. It is a new type of structure and process method that can theoretically achieve a 100% qualified rate of the sudden short-circuit test of the transformer. Even when the pressing nail or pulling screw of the transformer loses its function, it can also ensure that the winding is not damaged. The utility model has the characteristics of simple structure and method, outstanding effect, and does not affect the electrical performance and temperature rise of the transformer. Background technique [0002] The arrangement of transformer windings is divided into two types: concentric and overlapped. The concentric arrangement is an absolutely important application method, and now overlapping windings are also widely used. [00...

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Problems solved by technology

[0006] Limiting the transformer short-circuit current to reduce the short-circuit electromotive force requires increasing the short-circuit impedance of the transformer, which greatly increases the cost of the transformer, reduces system efficiency, increases system energy consumption, and greatly increases reactive power

When the transformer winding dipping process is used, the electrical performance of the transformer is greatly reduced, especially it cannot be applied to ultra-high voltage and ultra-high voltage transformers, and the cost and working hours are greatly increased

Making the ampere-turn balance in each area of ​​the winding to reduce the leakage flux can only be reduced but not eliminated, and the design difficulty is greatly increased, or it is impossible to achieve

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