High-voltage transmission power cable

A power cable and high-voltage transmission technology, which is applied to power cables with shielding layers/conductive layers, insulated cables, cables, etc., can solve problems such as difficult to find breakpoints, solve the problem of long-term large-area power outages, and reduce resistivity , the effect of hardness improvement

Inactive Publication Date: 2016-05-25
谢安军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Second, once there is an open circuit problem in the power cable, it is very difficult to find the open circuit point, which will lead to long-term and large-scale power outages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: a high-voltage transmission power cable, including 3 conductors, a conductor shielding layer, an insulating layer, and a protective layer; the conductor shielding layer is arranged on the outside of the conductor, the insulating layer is arranged on the outside of the conductor shielding layer, and the three conductors are arranged on the protective layer inside; also includes a cylindrical fixing device, the cylindrical fixing device is located in the protective layer; the side of the cylindrical fixing device is equidistantly provided with 3 arc-shaped grooves; the 3 conductors are respectively located in the arc-shaped groove; the cavity formed between the conductor, the cylindrical fixing device, and the protective layer is filled with an insulating filler; it also includes a remote breakpoint detection unit and 6 terminal breakpoint detection units; the 6 terminal breakpoint detection units The point detection units are equidistantly arranged on the hi...

Embodiment 2

[0059] On the basis of Embodiment 1, the first switch, the second switch, and the third switch all use controllable thyristors.

[0060] Wherein, the conductor is made of aluminum alloy material, and the weight ratio of the aluminum alloy material is as follows: aluminum: 1000 parts; lutetium: 2 parts; manganese: 13 parts;

[0061] After preparing the aluminum alloy raw materials according to the above weight ratio, firstly, the melting temperature is 830°C, after stirring, degassing and refining with hexachlorobenzene, continuous casting is carried out using a continuous casting machine, and continuous casting is made into an aluminum alloy ingot of Φ120mm;

[0062] Then, an aluminum alloy rod of Φ35mm is made by hot extrusion at 420°C with an extruder;

[0063] Then, perform annealing treatment at 420°C for 50 hours;

[0064] Finally, a Φ4mm aluminum-lutetium-manganese alloy wire was prepared by drawing eight times with a wire drawing machine.

Embodiment 3

[0066] Others are exactly the same as in Example 1, wherein the conductor is made of an aluminum alloy material, and the weight ratio of the aluminum alloy material is as follows:

[0067] Aluminum: 1000 parts; Lutetium: 3 parts; Manganese: 14 parts;

[0068] After preparing the aluminum alloy raw materials according to the above weight ratio, firstly, the melting temperature is 830°C, after stirring, degassing and refining with hexachlorobenzene, continuous casting is carried out using a continuous casting machine, and continuous casting is made into an aluminum alloy ingot of Φ120mm;

[0069] Then, an aluminum alloy rod of Φ35mm is made by hot extrusion at 420°C with an extruder;

[0070] Then, perform annealing treatment at 420°C for 50 hours;

[0071] Finally, a Φ4mm aluminum-lutetium-manganese alloy wire was prepared by drawing eight times with a wire drawing machine.

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Abstract

The invention discloses a high-voltage transmission power cable which comprises three conductors, a conductor shielding layer, an insulating layer and a protecting layer, wherein the conductor shielding layer is arranged on the exterior of the conductor; the insulating layer is arranged on the exterior of the conductor shielding layer; and the three conductors are arranged in the protecting layer. The high-voltage transmission power cable also comprises a cylindrical fixing device, wherein the cylindrical fixing device is positioned in the protecting layer; three arc grooves are formed in the side surface of the cylindrical fixing device in equal intervals; the three conductors are positioned in the arc grooves respectively; the cavity formed among the conductors, the cylindrical fixing device and the protecting layer is filled with an insulating filler; the high-voltage transmission power cable also comprises a far-end breakpoint detection unit and N terminal breakpoint detection units; the N terminal breakpoint detection units are arranged on a high-voltage transmission power cable line in equal intervals; and N is greater than or equal to 2. According to the power cable disclosed by the invention, the problem of short circuit caused by friction is avoided; in the case of open circuit of the power cable, the open circuit point can be quickly judged; and the core hardness is high, and the electrical resistivity is low.

Description

[0001] This application is a divisional application of a patent application with an application date of October 15, 2014, an application number of 201410546912.9, and an invention name of a high-voltage transmission power cable. technical field [0002] The invention relates to the technical field of high-voltage power transmission, in particular to a high-voltage power transmission power cable. Background technique [0003] With the rapid development of the national economy, the amount and scope of use of power cables as the main artery of the national economy are increasing. Power cables are cables used to transmit and distribute electrical energy. It is often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of power cables is gradually increasing. Power cables are cable products used to transmit and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B7/18H01B7/32H01B1/02
CPCH01B1/02H01B1/023H01B7/18H01B7/32H01B7/40H01B9/02
Inventor 谢安军
Owner 谢安军
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