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Novel high-frequency alternating-current power transmission simple cable structure based on wind-solar complementation

A cable structure, AC and DC transmission technology, applied in the direction of power cables, power cables with shielding layer/conductive layer, insulated cables, etc., can solve the problems of low distance and high loss

Inactive Publication Date: 2021-02-23
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this invention is to provide a new type of cable structure to solve the problems of high loss and low distance caused by the skin effect when the high-frequency power transmission method is used for power transmission in offshore wind power, and to carry out a detailed description of its specific implementation analyze

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  • Novel high-frequency alternating-current power transmission simple cable structure based on wind-solar complementation
  • Novel high-frequency alternating-current power transmission simple cable structure based on wind-solar complementation
  • Novel high-frequency alternating-current power transmission simple cable structure based on wind-solar complementation

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] For the cable structure and its materials, the present invention is a simple structure, so some optimized structures for insulation and protection are omitted, and only the simple structure involving the principle composed of the most directly related layers is discussed. The present invention: a new type of simple cable structure for high-frequency AC power transmission based on wind-solar complementarity, which consists of a DC positive line, an insulating layer 1, an AC layer, an insulating layer 2, an armored grounding layer, and a PP layer. The material of the DC positive line layer and the AC layer is copper material, the material of the insulating layer 1 and the insulating layer 2 is polyethylene or cross-linked polyethylene, and the material of the armored ground layer is galvanized steel wire.

[0019] In view of the principle and rationality...

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Abstract

The invention relates to a cable structure capable of reducing a cable skin effect during high-frequency power transmission, a flexible direct-current power transmission technology and the field of offshore wind power and electric energy high-frequency transmission. The cable structure is composed of a direct-current positive wire, an insulating layer 1, an alternating-current layer, an insulatinglayer 2, an armored grounding layer and a PP layer, wherein direct-current voltage is applied to the direct-current positive wire layer, alternating-current voltage is applied to the alternating-current layer, and direct current passes through the direct-current positive wire layer and alternating current passes through the alternating-current layer. According to the invention, large loss causedby a skin effect generated during high-frequency power transmission of the alternating-current cable can be adjusted and improved through an electric field created by direct current, so that the purpose of low loss and long distance of high-frequency power transmission is achieved, and the alternating-current and direct-current comprehensive operation complements each other.

Description

technical field [0001] The invention belongs to the field of high-frequency AC power transmission cable structures, and in particular relates to a novel high-frequency AC power transmission simple cable structure that reduces skin effect during conduction, cable running loss, and increases transmission distance. Background technique [0002] In recent years, with the continuous improvement of offshore wind power capacity, its position in land power supply has also increased. At present, the electricity generated by offshore wind turbines is AC, and AC cables are needed to transmit power to land. However, since wind turbines are generally far away from the land, the operating conditions of submarine cables are extremely complex and are easily disturbed, making the power quality less than ideal. If high-frequency power transmission is used, although its anti-interference ability is strong and the power quality can be significantly improved, it is limited by too much loss and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/30H01B7/14H01B7/02H01B9/02
CPCH01B7/0216H01B7/14H01B7/30H01B9/028
Inventor 陈凯平陈贵全陈凌彬
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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