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10 kV oil-immersed distribution transformer for sectional coils

A distribution transformer, segmented technology, applied in the direction of transformer/inductor cooling, transformer/inductor parts, transformer/inductor coil/winding/connection, etc., can solve the problem of different aging speed of insulating materials, Achieve the effect of solving the problem of large-capacity heat dissipation and high-voltage insulation, prolonging the working life and good thermal conductivity

Pending Publication Date: 2018-11-02
GUANGZHOU HUALI SCI & TECH VOCATIONAL COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that the aging speed of insulating materials is different due to the large temperature difference between the bottom layer and the top layer when the oil-immersed transformer is in operation.

Method used

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  • 10 kV oil-immersed distribution transformer for sectional coils
  • 10 kV oil-immersed distribution transformer for sectional coils
  • 10 kV oil-immersed distribution transformer for sectional coils

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Embodiment 1

[0031] A 10kV oil-immersed distribution transformer composed of segmented coils, including an iron core clamp (10), an iron core (2) and a coil winding, characterized in that the iron core (2) is clamped by the iron core The part (10) is fixed, and the coil winding is set on the iron core (2). There is a gap between the iron core (2) and the coil winding and oil passage insulation is provided. The coil winding is a segmented coil structure, and each segment coil There are gaps between them and provide inter-segment insulation.

[0032] The coil winding includes a high-voltage coil and a low-voltage coil, the low-voltage coil is set on the outer layer of the iron core, and the high-voltage coil is wrapped on the outer layer of the low-voltage coil;

[0033] Oil passage insulation is provided between the high voltage coil and the low voltage coil.

[0034] In this embodiment, the high-voltage coil is at least divided into two sections of coil windings, the first high-voltage co...

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Abstract

The invention discloses a 10 kV oil-immersed distribution transformer for sectional coils. The 10 kV oil-immersed distribution transformer comprises an iron core clamping part, an iron core and sectional coil windings, wherein a gap is formed between the iron core and the coil winding, oil passage insulation is arranged, gaps are formed among the sectional coils, and section insulation is arranged. According to the 10 kV oil-immersed distribution transformer, insulation characteristic among the windings and between the windings and the iron core is strengthened, the voltage difference is reduced, the distribution of an electric field is more uniform, and different heat endurance classes of insulating materials are arranged according to different operating temperatures on the top and at thebottom of the transformer, so that the service life of the transformer is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of transformer coil winding, in particular to a 10kV oil-immersed distribution transformer with segmented coils. Background technique [0002] The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core (magnetic core). The distribution transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. . With the sustained and rapid development of the national economy, higher requirements are put forward for power transformers in terms of energy saving, environmental protection, and improvement of power supply reliability. [0003] Oil-immersed transformer is a transformer whose core and winding are immersed in insulating liquid. It is one of the important equipment in the power supply and distribution s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/32H01F27/12H01F27/28
CPCH01F27/12H01F27/2823H01F27/322H01F27/323H01F27/324
Inventor 王秀敏吴贵和张红雅谢伟军刘礼安赵凡唐飘逸
Owner GUANGZHOU HUALI SCI & TECH VOCATIONAL COLLEGE
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