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Dry power transformer

A power transformer, dry-type technology, applied in the field of transformers, can solve problems such as high cost, uneconomical, limited power grid transmission and coverage

Inactive Publication Date: 2009-05-06
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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  • Dry power transformer
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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 iron core 1, low-voltage winding 2, high-voltage winding 3, insulating pad 4 and lugs, and the high-voltage winding 3 of each phase is made up of two independent windings up and down, with insulating pad between the upper and lower windings 4 apart, the ends of the two windings of each phase are opposite.

[0014] like image 3 As shown, the parallel connection or series connection of the upper and lower two sets of windings, when the high voltage winding of the transformer is a delta connection, the connection is made on the first layer of lugs, and the leads A, A' of the upper and lower windings of one phase are connected to the first layer of lugs A, A', the lead tails X1, X1' of the upper and lower windings of one phase are correspondingly connected to the first layer of lugs X1, X1', when connected to...

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Abstract

The invention relates to a dry-type electric power transformer and belongs to the technical field of transformers. The invention improves the structure of the prior dry-type electric power transformer and is characterized in that each phase winding of a high voltage winding consists of two independent windings of an upper winding and a lower winding, and the upper winding is separated from the lower winding by an insulating pad into two independent upper and lower windings of 10KV. By changing the structure of the high-voltage winding, the invention does not affect the mechanical and electrical performances of products, and plays a connecting role during the transformation of the transition from a 10KV power grid to a 20KV power grid; primary side voltage of the 10KV power grid and the 20KV power grid can be freely switched, without any effect on the secondary side; compared with a 10KV transformer, the invention increases the power supply capacity, ensures the voltage quality, reduces the electric energy loss of the power grid and saves the construction cost of the power grid, and the invention has all the functions of a 20KV transformer simultaneously and is well in line with the distribution of the town power grid.

Description

technical field [0001] The invention relates to a dry-type power transformer, in particular to a 20KV dry-type power transformer, and belongs to the technical field of transformers. Background technique [0002] The high-voltage windings of the existing 10KV and 20KV dry-type 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 shortcomings of the dry-type 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, compared with the existing 10KV power transformer It increases the power supply capacity, ensures the voltage quality, reduces the power loss of the power grid, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/32
Inventor 高雄鹰朱滨
Owner YANGZHOU HUADING ELECTRIC APPLIANCE
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