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Power transformer high voltage winding without generating partial discharge

A technology for power transformers and high-voltage windings, which is applied in the manufacture of inductors/transformers/magnets, circuits, and electrical components. Requirements and process to achieve difficulty, the effect of increased service life

Inactive Publication Date: 2016-02-03
刘自铭 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the winding is too loose to increase the size of the transformer needlessly. To meet the performance requirements of the transformer, the amount of iron core and wire must be increased, which is very uneconomical.
In addition, the structural strength of this process is weak, and the dustproof and waterproof ability is slightly poor. It is often only used for special transformers because of the high requirements for the use environment.

Method used

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  • Power transformer high voltage winding without generating partial discharge
  • Power transformer high voltage winding without generating partial discharge
  • Power transformer high voltage winding without generating partial discharge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-voltage winding of a power transformer that does not generate partial discharge, including a winding frame 1 and a wire 2, the winding frame 1 includes an inner lining cylinder 3 and several comb-shaped racks 4, and the comb-shaped racks 4 are longitudinally fixed to the inner lining cylinder 3 On the outer wall of the comb rack 4, the comb rack 4 includes a rack 5 and a positioning tooth set 6, and the positioning tooth set 6 includes an incoming line positioning tooth 7 fixed on the top of the rack, an outgoing line positioning tooth 8 fixed on the bottom end of the rack, and The first main positioning tooth 9, the second main positioning tooth 10, ..., the n1th main positioning tooth 11 (n1 is a positive integer) are located between the incoming line positioning tooth and the outgoing line positioning tooth; the incoming line positioning on the same comb rack A first tooth slot 12 is formed between the tooth and the adjacent main positioning tooth, a second too...

Embodiment 2

[0032] A high-voltage winding of a power transformer that does not generate partial discharge, including a winding frame 1 and a wire 2, the winding frame 1 includes an inner lining cylinder 3 and several comb-shaped racks 4, and the comb-shaped racks 4 are longitudinally fixed to the inner lining cylinder 3 On the outer wall of the comb rack 4, the comb rack 4 includes a rack 5 and a positioning tooth set 6, and the positioning tooth set 6 includes an incoming line positioning tooth 7 fixed on the top of the rack, an outgoing line positioning tooth 8 fixed on the bottom end of the rack, and The first main positioning tooth 9, the second main positioning tooth 10, ..., the n1th main positioning tooth 11 (n1 is a positive integer) are located between the incoming line positioning tooth and the outgoing line positioning tooth; the incoming line positioning on the same comb rack A first tooth slot 12 is formed between the tooth and the adjacent main positioning tooth, a second too...

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Abstract

The invention relates to a design and manufacturing method of a power transformer high voltage winding without generating partial discharge. The power transformer high voltage winding comprises a winding framework and a wire. The winding framework comprises an internal shell and a plurality of comb-shaped racks. The wire is sequentially wound in each sub winding embedding groove in a continuous lap taping mode from inside to outside, and N1 sub windings are formed, voltage borne by the sub windings and voltage among sub winding inner turns are limited, the whole winding can meet the condition that partial discharge is not generated, the compact high voltage winding is formed, the economy, safety and power supply reliability of long-term operation of a transformer are improved, the transformer manufacturing quality and production efficiency are improved as well, the comprehensive production and operation cost of the transformer is effectively lowered, and the power transformer high voltage winding has obvious social and economic benefits.

Description

technical field [0001] The invention relates to the field of power transformer manufacturing, in particular to a high-voltage winding of a power transformer that does not generate partial discharge. Background technique [0002] There are two types of winding structures for a high-voltage line of a conventional dry-type power transformer. One is to divide a winding that withstands full voltage into small segments and then fill it with a heat-conducting insulating material and solidify it. The other is to divide a winding that withstands full voltage into single layers. It is wound and divided into many cakes to make an open structure. [0003] The typical structure of the first type is to divide the winding into a small number of single-layer foil-wound segments, and each segment is densely filled with insulating material. For example, one winding of a conventional 10kV transformer consists of 4 segments or 8 segments. If it is 4 segments, the normal inter-segment voltage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/082H01F41/066H01F41/076
Inventor 刘自铭吴济安王跃林
Owner 刘自铭
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