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High-strength high-voltage transmission power cable

A high-voltage power transmission and power cable technology, which is applied to power cables with shielding layers/conductive layers, insulated cables, cables, etc., can solve problems such as difficulty in finding breakpoints, sliding friction, and short circuits in insulating layers, and achieve long-term large-scale Area blackout problem, resistivity reduction, hardness improvement effect

Inactive Publication Date: 2016-06-08
谢安军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention: first, the phenomenon of sliding friction easily occurs between the A phase, B phase and C phase of the existing three-phase power cable, and a short circuit will occur once the insulating layer is worn out after a long time; 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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  • High-strength high-voltage transmission power cable
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  • High-strength high-voltage transmission power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: a high-strength 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 In the protective layer; 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 circular 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 The terminal breakpoint detection units are equidistantly arranged on the h...

Embodiment 2

[0058] On the basis of Embodiment 1, the first switch, the second switch, and the third switch all use controllable thyristors.

[0059] Wherein, the conductor is made of aluminum alloy material, and the weight ratio of the aluminum alloy material is as follows: aluminum: 1000 parts; samarium: 12 parts; molybdenum: 4 parts;

[0060] 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;

[0061] Then, an aluminum alloy rod of Φ35mm is made by hot extrusion at 420°C with an extruder;

[0062] Then, perform annealing treatment at 420°C for 50 hours;

[0063] Finally, a Φ4mm aluminum-sarium-molybdenum-molybdenum alloy wire was prepared by drawing eight times with a wire drawing machine.

Embodiment 3

[0065] 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:

[0066] Aluminum: 1000 parts; Samarium: 13 parts; Molybdenum: 5 parts;

[0067] 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;

[0068] Then, an aluminum alloy rod of Φ35mm is made by hot extrusion at 420°C with an extruder;

[0069] Then, perform annealing treatment at 420°C for 50 hours;

[0070] Finally, a Φ4mm aluminum-sarium-molybdenum-molybdenum alloy wire was prepared by drawing eight times with a wire drawing machine.

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Abstract

The invention discloses a high-strength high-voltage transmission power cable. The high-strength high-voltage transmission power cable comprises three conductors, conductor shielding layers, insulating layers, a cylindrical fixing device and a protecting layer, wherein the conductor shielding layers are arranged on the outer portions of the corresponding conductors, the insulating layers are arranged on the outer portions of the corresponding conductor shielding layers, the three conductors are arranged in the protecting layer, and the cylindrical fixing device is positioned in the protecting layer. Three circular-arc-shaped grooves are formed in the side face of the cylindrical fixing device at equal intervals, the three conductors are positioned in the circular-arc-shaped grooves respectively, and cavities formed among the conductors, the cylindrical fixing device and the protecting layer are filled with insulating filler. The high-strength high-voltage transmission power cable further comprises a far-end breakpoint detection unit and N terminal breakpoint detection units, wherein the N terminal breakpoint detection units are arranged on a high-strength high-voltage transmission power cable line at equal intervals. The high-strength high-voltage transmission power cable has the advantages that the problem of short circuit of the power cable due to friction can be avoided; once the problem of broken circuit of the power cable arises, a breakpoint can be judged quickly; since a cable core is high in hardness, resistance rate is low.

Description

[0001] This application is a divisional application of a patent application with an application date of November 03, 2014, an application number of 201410610569.X, and an invention name of a high-strength 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-strength 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 p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/02H01B7/32
CPCH01B9/02H01B7/32
Inventor 梁龙
Owner 谢安军
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