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High voltage and ultra-high voltage direct current (DC) cross-linked polyethylene insulated sea electric power cable

A submarine power cable and cross-linked polyethylene technology, which is applied to power cables, submarine cables, and power cables with shielding/conducting layers, etc., can solve problems such as high cost, difficulty in manufacturing anti-corrosion plastic-coated steel wires, and difficulty in laying construction. , to achieve the effect of convenient subsea buried construction, elimination of the corrosion effect of polarized electric field, low manufacturing cost and low construction cost

Inactive Publication Date: 2012-02-22
宜昌联邦电缆有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This special anti-corrosion plastic-coated steel wire for submarine cable armor is difficult to manufacture and the cost is relatively high
In addition, single-core XLPE insulated DC high-voltage submarine power cables are difficult to lay

Method used

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  • High voltage and ultra-high voltage direct current (DC) cross-linked polyethylene insulated sea electric power cable
  • High voltage and ultra-high voltage direct current (DC) cross-linked polyethylene insulated sea electric power cable
  • High voltage and ultra-high voltage direct current (DC) cross-linked polyethylene insulated sea electric power cable

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: A high-voltage, ultra-high-voltage DC cross-linked polyethylene insulated submarine power cable, the outer layer 11 is a metal armor layer 10, the metal armor layer 10 is a cable binding tape 9, and the forward DC power transmission cable Cores and negative DC power transmission cable cores are bundled with cable binding tape 9, and the positive and negative DC power transmission cable cores are water-blocking conductor 1, conductor shielding layer 2, insulating layer 3, and insulating shielding layer from the inside to the outside. 4. The semiconducting resistive water buffer layer 5 and the metal shielding layer 6 are filled with filling strips 8 between the cores of the positive DC power transmission cable and the cores of the negative DC power transmission cable.

[0021] The insulating layer 3 is made of modified DC cross-linked polyethylene insulating material. Submarine power cables with cross-linked polyethylene as insulating material have good mec...

Embodiment 2

[0029] figure 2 is another technical design application example of the present invention: it and figure 1 The main difference of the scheme is that one or two submarine optical cable units 12 are added in the cable forming space of the two cable cores in the positive and negative direct current transmission core assembly cable forming process. It constitutes a ±100~400kV cross-linked polyethylene insulation, lead sheath shielding + semi-conductive plastic reinforced sheath, thick steel wire armor, two-core DC transmission photoelectric composite submarine power cable.

[0030] figure 2 Implementation Description: A two-core DC transmission optoelectronic composite submarine power cable for ±100-400kV cross-linked polyethylene insulation, lead sheath shielding + semi-conductive plastic reinforced sheath, thick steel wire armor. Such as figure 2 As shown, the inner layer to the outer layer respectively include the water-blocking conductor 1 of the cable, the conductor shie...

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Abstract

The invention relates to a high voltage and ultra-high voltage direct current (DC) cross-linked polyethylene insulated sea electric power cable, comprising a waterproof conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semi-conductive waterproof buffer layer, a metal shielding layer, a semi-conductive plastic reinforcing protective layer, filling strips, a cabling strapping tape, a metal armoring layer and an outer coating respectively from inside to outside in sequence. The high voltage and ultra-high voltage DC cross-linked polyethylene insulated sea electric power cable adopts a positive and negative DC transmission wire core integrated cabling structure, and avoids the polarized electric field corrosion effect of the metal armoring layer, and the metal armoring layer of the cable can be manufactured by using a common galvanized mild steel wire. Simultaneously, a dual-core DC high voltage sea electric power cable is more convenient to lay than a single-core DC high voltage sea electric power cable, and occupies less tidal flat laying route resource. The DC high voltage sea electric power cable can adopt a single solid core aluminum conductor, and has low manufacturing cost and better water-tightness.

Description

technical field [0001] The invention belongs to the technical field of cables, and specifically relates to a high-voltage, ultra-high-voltage DC transmission cross-linked polyethylene insulated submarine power cable or a photoelectric composite submarine power cable with excellent mechanical properties and anti-corrosion properties, which is laid in the marine environment. The cable adopts positive and negative DC transmission cable cores to form a cable structure. Background technique [0002] In recent years, with the expansion of the application technology field of high-voltage and ultra-high-voltage submarine direct current transmission projects, especially in the long-distance submarine power cable transmission engineering system with poor laying environment and the long-distance offshore wind power generation engineering system, cross-linked polymer There are more and more application systems for ethylene-insulated DC high-voltage submarine power cable transmission net...

Claims

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Application Information

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IPC IPC(8): H01B9/00H01B9/02H01B7/14
Inventor 吴建宁郑运焱郑顺山曾学忠戚景赞吴弘
Owner 宜昌联邦电缆有限公司
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