Direct-current submarine cable for flexible power transmission

A flexible power transmission and submarine cable technology, applied in power cables, power cables with shielding/conducting layers, cables, etc. Change the direction of power transmission, save cost, and reduce the effect of line loss

Inactive Publication Date: 2013-05-29
宁波东方电缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used submarine cables are basically AC submarine cables, but AC submarine cables generally have the following problems: (1), the line loss during power transmission is large; (2), due to the limitation of transmission distance, AC submarine cables cannot achieve long-distance transmission. Long-distance large-capacity power transmission; (3), high cost and short service life

Method used

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  • Direct-current submarine cable for flexible power transmission

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] As shown in the figure, the DC submarine cable for flexible power transmission includes two DC units, the two DC units are wrapped with an inner liner 1, and the gap formed by the inner liner 1 and the DC unit is filled with a filling strip 2 and a The root light unit 3, the light unit 3 is located between the filling strips 2, a layer of flat armor layer 4 coated with asphalt is arranged outside the inner lining layer 1, the flat armor layer 4 is composed of zinc-magnesium-aluminum alloy flat steel wires, and the flat armor layer Layer 4 is wrapped with an outer layer 5. The DC unit includes a water-blocking conductor 6, an inner shielding layer 7, an insulating layer 8 and an outer shielding layer 9 arranged in sequence from the inside to the outside. The material of the insulating layer 8 is DC cross-linked polymer. Ethylene, the mat...

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PUM

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Abstract

The invention discloses a direct-current submarine cable for flexible power transmission. The direct-current submarine cable is characterized by comprising two direct-current units, a liner layer is lapped outside the two direct-current units, filling strips are filled in gaps formed by the liner layer and the direct-current units, at least one flat armor layer is arranged outside the liner layer, and an outer wrapping layer is lapped outside at least one flat armor layer. Each of the direct-current units comprises a water blocking conductor, an inner shielding layer, an insulating layer and an outer shielding layer which are arranged successively from the inside to the outside. Semi-conductive water blocking tapes are lapped outside the outer shielding layers, lead sheaths and protection sheaths are arranged outside the semi-conductive water blocking tapes successively, the insulating layers are made of direct-current crosslinked polyethylene, and the inner shielding layers and the outer shielding layers are made of direct-current shielding materials. The direct-current submarine cable has the advantages that the direct-current units are used, so that the submarine cable is high in transmission efficiency and small in line loss, long-distance large-capacity power transmission is facilitated, the current can be adjusted easily, the power transmission direction can be changed easily, and the stability is high; and the direct-current submarine cable has a longer service life than that of an alternating-current submarine cable.

Description

technical field [0001] The invention relates to a submarine cable, in particular to a DC submarine cable for flexible power transmission. Background technique [0002] my country's coastline is very long, and there are many islands along the coast, such as the Zhoushan Islands and Taiwan, Hainan and other large islands. Therefore, it is usually necessary to lay cables on the seabed. The currently used submarine cables are basically AC submarine cables, but AC submarine cables generally have the following problems: (1), the line loss during power transmission is large; (2), due to the limitation of transmission distance, AC submarine cables cannot achieve long-distance transmission. Large-capacity power transmission over long distances; (3) High cost and short service life. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a DC submarine cable for flexible power transmission with small line loss, long service life...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/00H01B9/02
Inventor 张晨江夏峰李国林
Owner 宁波东方电缆股份有限公司
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