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Power cable

A power cable, semi-conductive technology, used in power cables, power cables with shielding/conducting layers, cables, etc. The flatness of the conductor surface is not high, and the effect of increasing the utilization rate of the conductor cross-section, reducing the amount of partial discharge and easy manufacturing technology

Inactive Publication Date: 2016-11-23
DATANG SANMENXIA POWER GENERATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The conductor of the traditional conductor structure power cable is made of ordinary round aluminum or copper monofilament twisted. During the twisting process, it is compacted by layers. Due to technical reasons, the conductor compaction coefficient of this structure can only reach 0.92 at most. After pressing the mold, the flatness of the cable conductor surface is not high, which will easily cause the interface between the conductor shielding layer and the insulating layer to be not smooth, and burrs will easily occur on the surface of the monofilament, which is not good for the miniaturization and electrical performance of the cable. The utilization rate of the conductor cross section is low, and the partial discharge of the cable Big

Method used

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  • Power cable

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the examples. The following examples are to explain the present invention and the present invention is not limited to the following examples.

[0018] like figure 1 As shown, this embodiment describes a power cable, and the voltage level of the cable is 127 / 220kV 1×630mm2. The power cable, from outside to inside, is: outer semiconducting layer 1, non-metallic outer protective layer 2, metal protective layer 3, semiconducting resistance water buffer layer 4, insulating shielding layer 5, insulating layer 6, conductor shielding layer 7 , Conductor 8. The conductor 8 is arranged at the most center, the middle of the conductor 8 is a circular conductor, and the surrounding is a trapezoidal single-line conductor that cooperates with each other and surrounds the circular conductor. The conductor 8 is a copper conductor, the conductor shielding layer 7 is composed of a semiconductive wrapping...

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Abstract

The invention relates to a power cable, which comprises an outer semiconductive layer, an outer nonmetal protective layer, a metal sheath layer, a semiconductive water-stop buffer layer, an insulated shield layer, an insulated layer, a conductor shield layer and conductors. The conductors are disposed in the innermost center, and the conductor shield layer, the insulated layer, the insulated shield layer, the semiconductive water-stop buffer layer, the metal sheath layer, the outer nonmetal protective layer and the outer semiconductive layer are arranged outside sequentially layer by layer. The conductors include a middle round conductor, and trapezoidal or Z-shaped single conductors mutually matching to surround the round conductor.

Description

technical field [0001] The invention relates to a power cable, which belongs to the field of power equipment, and is especially suitable for power cables with voltage levels of 110kV and above. Background technique [0002] The conductor of the traditional conductor structure power cable is made of ordinary circular aluminum or copper monofilaments, and is compressed by layers during the twisting process. Due to technical reasons, the conductor compression coefficient of this structure can only reach 0.92 at most, and the conductor passes through The flatness of the cable conductor surface after pressing the mold is not high, which is easy to cause the interface between the conductor shielding layer and the insulating layer to be unsmooth, and the surface of the single wire is prone to burrs, which is unfavorable to the miniaturization and electrical performance of the cable, and the utilization rate of the conductor cross-section is low. big. SUMMARY OF THE INVENTION [...

Claims

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Application Information

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IPC IPC(8): H01B9/00H01B9/02
CPCH01B9/006H01B9/02
Inventor 冯超王宝林李遂甫李东钦胡庆伟李克李文波李鹏
Owner DATANG SANMENXIA POWER GENERATION
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