Novel transposition aluminum conductor

A technology of transposition wires and aluminum wires, applied in the direction of conductors, insulated conductors, cables, etc., can solve problems such as discharge, accidents, and wire flow loss, and achieve the effects of improving the withstand voltage level, reducing eddy current loss, and avoiding eddy current loss

Active Publication Date: 2009-04-15
天津经纬电力科技有限公司
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  • Abstract
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Problems solved by technology

When this insulated aluminum stranded wire is used in a reactor, it is only suitable for ordinary high-voltage power grids; during operation, due to the difference in the resistance of a single wire, eddy currents will be generated, which will cause losses in the wires.
In addition, the impurity defects in the aluminum round bare wire are difficult to avoid, and it is easy to cause discharge under high voltage, which has the disadvantage of causing accidents

Method used

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  • Novel transposition aluminum conductor

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Embodiment

[0019] Taking the present invention applicable to UHV as an example, it includes a flat transposition wire 1, a film insulation layer 2 and a composite insulation layer 3; Double-layered transposition rectangular stranded wires composed of single-strand round aluminum wires 5; the film insulation layer 2 is an insulation film wrapping layer 4; the composite insulation layer 3 is a composite non-woven fabric wrapping with an insulation film layer; the film insulating layer 2 is coated on the outside of the flat transposed wire 1, and the composite insulating layer 3 is coated on the outside of the film insulating layer 2; the insulating films used for the film insulating layer 2, the composite insulating layer 3 and the insulating film wrapping layer 4 are all made of Class H insulating material.

[0020] After 16 non-defective single-strand round aluminum wires 5 with a diameter of 4.0mm are shaped by a special new-type transposition device and a new type of pressure roller, t...

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Abstract

A novel transposition electrical aluminium wire relates to a winding wire. The aluminium product, a substitute for copper product, is used for supervoltage and ultra-high voltage fields and can reduce eddy current loss in coils and save energy. The wire is characterized by comprising a flat transposition wire, a film insulating layer and a compound insulating layer; the flat transposition wire is a rectangle transposition stranded wire, which consists of a plurality of non-defective single-stranded circular aluminum wires with insulated film lapping layers and arrayed in double layers; the film insulating layer is the insulated film lapping layer; the compound insulating layer is a compound non-woven fabric lapping layer with an insulated film, the film insulating layer is covered at the outside of the flat transposition wire, and the compound insulating layer is covered at the outside of the film insulating layer. The aluminium wire is used for making the windings supervoltage or ultra-high voltage reactors and high voltage electric appliances.

Description

Technical field: [0001] The invention relates to a winding wire. Especially a new type of transposed aluminum wire. Background technique: [0002] In the national grid power transmission and transformation project, the windings of various types of reactors and high-voltage electrical appliances must withstand higher voltages, and at the same time reduce the loss of electric energy. [0003] For the coils of dry-type reactors used in the national grid power transmission and transformation projects, traditionally, a single strand of multiple wires is wound together. Due to the large diameter of the coils of dry-type reactors, the length of the required wires is as long as several In such a parallel wound coil, the diameter difference between the inner and outer sides of each adjacent circle can reach the width of 2 wire diameters; after winding multiple layers, the length and resistance of each wire will increase. The difference is large. The magnetic leakage flux generated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02
Inventor 张金生董树林赵庆霞
Owner 天津经纬电力科技有限公司
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