Oil-immersed power transformer

A power transformer, oil-immersed technology, applied in the field of transformers, can solve the problems of high cost, limited power grid transmission and coverage, and uneconomical

Inactive Publication Date: 2009-01-14
YANGZHOU HUADING ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 10KV power grid has limited transmission and coverage, and 20KV is a new voltage in the power grid. The one-time construction of a substation is expensive and uneconomical.

Method used

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  • Oil-immersed power transformer
  • Oil-immersed power transformer
  • Oil-immersed power transformer

Examples

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Embodiment Construction

[0013] Further illustrate the present invention in conjunction with accompanying drawing and embodiment, as figure 1 , figure 2 As shown, the present invention is made of fuel tank, iron core 1 in the fuel tank, low-voltage winding 2, high-voltage winding 3, insulating pad 4 and tap changer 5, and the high-voltage winding 3 of each phase is made up of two independent windings up and down, up and down The windings are separated by insulating pads 4, and the ends of the two windings of each phase are opposite.

[0014] Such as image 3 As shown, the tap leads of the upper winding are four wires, that is, X2, X3, X4, and X5 respectively correspond to X2, X3, X4, and X5 on the second layer of the tap changer to form three gears; the tap leads of the lower winding X2 , X3, X4, and X5 respectively correspond to X2', X3', X4', and X5' connected to the third layer of the tap changer to form three gears.

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PUM

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Abstract

The invention relates to an oil-filled power transformer, belonging to the field of transformer technique. The invention improves the existing oil-filled power transformer structure and is mainly characterized in that each phase of winding of a high-voltage winding consists of an upper independent winding and a lower independent winding; the upper winding and the lower winding are separated into two independent 10KV windings by a cross-over block; by changing the high-voltage winding structure, the mechanical and electric performance of the product is not affected, and wiring can be carried out inside an oil tank; the structure of the invention does not affect the mechanical strength and electric performance of the product; furthermore, during the transitional reconstruction from 10KV power network to 20KV power network, the transformer of the invention has a transition effect; primary side voltages of 10KV transformer and 20KV transformer can be freely switched and the secondary side is not affected; compared with 10KV transformer, the power supply capability is increased, the quality of the voltage is ensured, the power energy dissipation of the power network is reduced, the construction expense of the power network is saved, meanwhile, all functions of 20KV transformer are provided, and the distribution of town power network is complied with more.

Description

technical field [0001] The invention relates to an oil-immersed power transformer, in particular to a 20KV oil-immersed power transformer, and belongs to the technical field of transformers. Background technique [0002] The high-voltage windings of the existing 10KV and 20KV oil-immersed power transformers have an integral structure. The 10KV power grid has limited transmission and coverage, and 20KV is a new voltage in the power grid. The one-time construction of a substation is expensive and uneconomical. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned deficiencies in the oil-immersed power transformers used in the existing 10KV power grid and 20KV power grid, to provide the primary side voltage can be switched freely, and the secondary side is not affected in any way, which is comparable to the existing 10KV power transformer. Compared with increasing the power supply capacity, ensuring the voltage quality, reduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F29/04
Inventor 高雄鹰朱滨
Owner YANGZHOU HUADING ELECTRIC APPLIANCE
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