A high-voltage, ultra-high-voltage XLPE insulated single-core submarine power cable

A technology for submarine power cables and cross-linked polyethylene, which is used in submarine cables, power cables with shielding layers/conducting layers, etc., can solve the problems of poor mechanical stability of cable structures, easy damage, difficult use and maintenance, etc. The effect of performance and applicability, good corrosion resistance, obvious energy saving effect

Active Publication Date: 2011-12-14
HENGTONG SUBMARINE POWER CABLE CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Compared with cross-linked polyethylene insulated submarine power cables, the mechanical stability of the cable structure is poor, the resistance to bending damage is poor, and it is not earth...

Method used

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  • A high-voltage, ultra-high-voltage XLPE insulated single-core submarine power cable
  • A high-voltage, ultra-high-voltage XLPE insulated single-core submarine power cable
  • A high-voltage, ultra-high-voltage XLPE insulated single-core submarine power cable

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Embodiment Construction

[0018] A high-voltage, ultra-high-voltage cross-linked polyethylene insulated single-core submarine power cable, such as figure 1 As shown, the inner layer to the outer layer are the water-blocking conductor 1, the conductor shielding layer 2, the insulating layer 3, the insulating shielding layer 4, the first semiconducting resistance water buffer layer 5, the metal shielding layer 8, and the plastic reinforced protective layer 9. , a metal armor layer and an outer layer 11, the metal shielding layer 8 is a lead sleeve shielding layer, and between the first semiconducting resistance water buffer layer 5 and the metal shielding layer 8 is provided with a wire made of copper wire. Copper wires are sparsely wound around the shield 6, and the metal armor layer is composed of non-magnetic non-ferrous metal alloy wires 10.

[0019] The insulating layer 3 is made of cross-linked polyethylene insulating material. In recent years, XLPE insulation materials have been widely used in hi...

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Abstract

The invention discloses a high voltage and supervoltage cross-linked polyethylene insulating submarine power cable with a single core. A metal shielding layer (8) of the cable is a lead sleeve shielding layer; and a copper wire sparse winding shielding (6), which is formed by copper wire leads, is arranged between a first semiconduction water blocking buffer layer (5) and the metal shielding layer (8). And a metal armor layer is composed of nonmagnetic non-ferrous metals. According to the invention, the cable has a good mechanical property and a good corrosion resistant performance; electromagnetic losses are small; and there is enough transient and short-circuit current capacity. Therefore, the cable provided in the invention is suitable for replacing a high voltage and supervoltage AC transmission oil impregnated paper insulating submarine power cable with a single core as well as can be laid in an adverse marine usage environment; moreover, the cable has good mechanical and applicable performances.

Description

technical field [0001] The invention relates to a submarine power cable, in particular to a submarine power cable with good mechanical strength, good corrosion resistance, good wear resistance and low electromagnetic loss, which is suitable for 220-500kV AC power system. Background technique [0002] At present, the 220-500kV single-core submarine power cables used in domestic high-voltage and ultra-high-voltage AC submarine cable transmission engineering systems often use oil-impregnated paper to insulate AC submarine cables. [0003] Oil-impregnated paper insulated AC submarine cable technology has good insulation performance and stable electrical performance, and its application has been around for a long time. However, due to the limitation of its structural design, the submarine oil-immersed paper insulated cable must have a reliable oil pressure maintenance cycle and monitoring system. [0004] Compared with cross-linked polyethylene insulated submarine power cables, ...

Claims

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Application Information

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IPC IPC(8): H01B9/02H01B7/14
Inventor 吴建宁冯华强施伟明许勇君
Owner HENGTONG SUBMARINE POWER CABLE CO LTD
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