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Power cable

A power cable and nano-composite technology, applied in the direction of power cables with shielding layer/conductive layer, etc., can solve problems such as theoretical analysis of failure causes of XLPE power cables

Active Publication Date: 2017-07-04
江苏赛特电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of understanding of the aging process and breakdown mechanism of the XLPE power cable insulation body, the existing domestic research level cannot conduct in-depth theoretical analysis of the fault causes of XLPE power cables, and this research is still blank. Therefore, it is urgent to carry out Research work on how to prolong the service life of cables and reduce the failure rate of cable bodies

Method used

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Examples

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Embodiment 1

[0028] Example 1 Prepare graphene, a sample with a mass ratio of nano-alumina of 20:7, 2g of graphene, and 0.7g of nano-alumina. 18ml concentrated H2SO4, 8ml concentrated H3PO4, 20ml hydrogen peroxide solution, 100ml chloroform solution, 20g polyethylene, 300ml xylene.

[0029] Step 1, add 18ml concentrated H2SO4 and 8ml concentrated H3PO4 according to 9:4 into a three-necked flask with 2g graphene;

[0030] Step 2, then add 20ml of hydrogen peroxide, and magnetic stirring at room temperature for 2h;

[0031] Step 3, then raise the temperature to 50°C, and magnetically stir for 3h under ultrasonic vibration treatment;

[0032] Step 4, then cool to room temperature, add 0.7g nano-alumina, and magnetically stir for 2 hours in an ice-water bath;

[0033] Step 5. After the ice-water bath treatment, perform centrifugation to remove the upper liquid, and then repeatedly wash 5-6 times under hydrochloric acid and deionized water. After washing, dry it in a vacuum oven at 110°C for ...

Embodiment 2

[0039] Example 2: Graphene is prepared, the mass ratio of nano-alumina is 20:7.5, 2g of graphene, 0.75g of nano-alumina. 18ml concentrated H2SO4, 8ml concentrated H3PO4, 20ml hydrogen peroxide solution, 100ml chloroform solution, 20g polyethylene, 300ml xylene, the operation steps are the same as in Example 1.

Embodiment 3

[0040] Example 3: Graphene is prepared, the mass ratio of nano-alumina is 20:8, 2g of graphene, 0.8g of nano-alumina. 18ml concentrated H2SO4, 8ml concentrated H3PO4, 20ml hydrogen peroxide solution, 100ml chloroform solution, 20g polyethylene, 300ml xylene, the operation steps are the same as in Example 1.

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Abstract

The invention discloses a power cable. The power cable comprises conductors, wherein the outside of each conductor is coated with a conductor shielding layer; the outside of each conductor shielding layer is coated with an insulating rubber layer; a wrapping layer is arranged outside the insulating rubber layers; a rubber protection layer is arranged outside the wrapping layer; and each conductor shielding layer is prepared from a nanometer composite graphene shielding material. The prepared power cable has quite high breakdown fault resistance.

Description

technical field [0001] The invention relates to a power cable and belongs to the field of material synthesis. Background technique [0002] Cross-linked polyethylene (XLPE) power cables have been used in domestic power grids since the late 1980s, and were widely used in the early 1990s. In the initial stage of its operation, the operating failure rate was not high, but after more than ten years of operation, the operating failure rate of a large number of XLPE power cable lines put into operation at that time has increased significantly in recent years. 35KV and below XLPE power cables due to external factors such as external force damage, moisture migration and chemical corrosion, etc., form water dendrites and early aging, resulting in the number of XLPE power cable line breakdown faults accounting for more than 90% of the total number of power cable faults . Due to the lack of understanding of the aging process and breakdown mechanism of the XLPE power cable insulation ...

Claims

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Application Information

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IPC IPC(8): H01B9/02
CPCH01B9/02
Inventor 张名运
Owner 江苏赛特电气有限公司
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