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Ultra-large-section fanlike split conductor

A technology for dividing conductors and sector conductors, applied in conductors, insulated conductors, insulated cables, etc., can solve the problems of reducing insulation performance, surface unevenness, increasing line loss, etc., to increase conductor cross-section, improve transmission capacity, and not loose Effect

Inactive Publication Date: 2015-02-18
WUXI JIANGNAN CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for a larger cross-section, since the sector height and sector width are greater than twice the penetration depth (the skin effect is formed due to the attenuation of the field quantity inside the conductor, the attenuation speed of the field quantity in the conductor can be determined by the penetration depth d representation), so the segmentation effect is no longer obvious
At the same time, there are many problems and disadvantages in the production process of this method of dividing the conductor: first, when the section of the fan-shaped conductor strand is too large, the difficulty of the production process increases, the characteristic requirements of the tooling mold and equipment, and the stability of the conductor structure and bending characteristics cannot meet the requirements; secondly, power cables often require that the conductors must be compacted conductors to increase the filling factor of the conductors, reduce the outer diameter, reduce the gap between conductors, and prevent moisture from infiltrating; to make the conductors more tightly connected, Some problems caused by looseness are avoided. The contact surface is enlarged, the conductivity is enhanced, and the heating resistance caused by poor contact is avoided; while the fan-shaped conductor strands are fan-shaped compactly pressed, and the shape of each layer is different. When the cross-section of the strands is too large, the difficulty of compacting increases.
The third is that the insulating paper between the fan-shaped conductor strands cannot withstand deformation. During processing, the conductor must be pre-twisted and then wrapped with paper to become a pre-twisted insulating wire, and then assembled
Because of the above reasons, it is often necessary to use metal strips (such as steel strips, bronze strips, etc.) or other strips to fasten the fan-shaped conductor strands after they are assembled. However, this fastening method increases the production cost and the surface is not smooth. , also reduces the softness of the conductor, and it is easy to generate a gap between the conductor and the shielding layer when the conductor is bent, which reduces the insulation performance, and the metal strip can also cause uneven electric field and increase line loss

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing.

[0015] Such as figure 1 A super-large cross-section fan-shaped split conductor is shown, the conductor center is formed by a collection of six split fan-shaped conductor strands 1; the entire collection of split fan-shaped conductor strands 1 is stranded with a conductor single wire layer 3; the described An isolated insulating crepe paper 2 is arranged between the assembled sector-shaped conductor strands 1 and the stranded conductor single wire layer 3; the conductor single wire layer 3 is a Z-shaped single wire layer.

[0016] Such as figure 2 shown, with figure 1 The difference is that the conductor single wire layer 3 is a tile-shaped single wire layer.

[0017] There are many specific application approaches of the present invention, and the above description is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinar...

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Abstract

The invention discloses an ultra-large-section fanlike split conductor. A conductor center is formed by integrating multiple split fanlike conductor strand blocks, and conductor single line layers are twisted outside the whole integrated split fanlike conductor strand blocks; insulating crepe paper for isolation is arranged between the integrated split fanlike conductor strand blocks and the twisted conductor single line layers. The ultra-large-section fanlike split conductor has the advantages that the production technology difficulty is lowered, the compressing coefficient is large, the compactness is high, the structure is stable, the skin effect is little, and carrying capacity is large.

Description

technical field [0001] The invention relates to the field of cable conductors, in particular to a fan-shaped segmented conductor with a super large cross-section. Background technique [0002] With the rapid growth of China's economy and the further acceleration of industrialization and urbanization, the requirements for the construction of infrastructure such as urban power grids are increasing. Cities in developed regions and provincial capitals have required the use of underground power cables to transmit electric energy in urban centers. At the same time, electricity is the premise and foundation of the development of the national economy. With the rapid development of the national economy, the demand for electricity has increased sharply, the capacity of the grid has increased sharply, and the power of motors has increased. ) transmission direction development. In order to increase the carrying capacity of the cable, the method of increasing the cross section of th...

Claims

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Application Information

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IPC IPC(8): H01B9/00H01B7/30
Inventor 刘军韩俊杰夏亚芳张文敏刘天宇
Owner WUXI JIANGNAN CABLE
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