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Method for improving the electric field distribution in a high voltage direct current cable

A high-voltage direct current and cable technology, applied in the field of HVDC cables, improving electric field distribution, manufacturing high-voltage direct current cables, improving electric field distribution of high-voltage direct current cables, and power grid systems, can solve problems such as high costs

Inactive Publication Date: 2016-05-04
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to try to minimize space charge accumulation, an additional extended time heating step (which limits yield) is required for state-of-the-art extruded HVDC cables
All of the above considerations contribute to the high cost of currently available extruded HVDC cables

Method used

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  • Method for improving the electric field distribution in a high voltage direct current cable
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  • Method for improving the electric field distribution in a high voltage direct current cable

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Embodiment Construction

[0043] Aspects of the invention, together with some of its features, advantages and details, are explained more fully below with reference to non-limiting embodiments shown in the accompanying drawings. Descriptions of well-known materials, fabrication tools, processing techniques, etc. are omitted so as not to unnecessarily obscure the invention in detail. It should be understood, however, that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only and not by way of limitation. Various alternatives, modifications, additions and / or arrangements within the spirit and / or scope of the following inventive concepts will be apparent to those skilled in the art from this disclosure.

[0044] The presently disclosed HVDC cables and methods address the issues of space charge accumulation, undesired electric field enhancement in HVDC applications, and / or prohibitive costs associated with known HVDC cables and ...

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Abstract

A method for improving the electric field distribution in a high voltage direct current cable includes providing a cable that includes a conductor, a protective jacket, a shield layer disposed inside the jacket, and an insulation layer disposed inside the shield layer, surrounding the conductor. The insulation layer includes ethylene-propylene rubber, talc, and montmorillonite.

Description

[0001] Statement of Government Rights [0002] This invention was made with Government support under Contract No. DE-AR0000231 awarded by the US Department of Energy. The government has certain rights in this invention. Background technique [0003] High-voltage direct current (HVDC) cables are an important part of the HVDC grid, and they account for more than one-third of the system cost. There are unique challenges specifically associated with DC cables compared to alternating current (AC) cables, such as non-linear electric field distribution, and distortion / enhancement of the electric field due to space charge accumulation. [0004] Currently, there are two types of HVDC cables commercially available. One type of cable employs overlapping insulation systems such as oil-paper insulation or heavily impregnated paper insulation. These cables have proven to be very reliable and can operate at very high voltage levels. However, due to their complicated structure, they are e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/06C08L91/06C08K3/34C08K9/04H01B9/02H01B7/02
CPCC08L23/16H01B7/02H01B9/02C08L2207/066C08L2205/03C08L2203/202C08L23/06C08L91/06C08K3/34C08K9/04C08K3/346H01B3/441H01B3/28H01B13/148C08L19/00H01B7/17H05K9/0079
Inventor 陈勤C·M·卡尔布雷斯曹阳S·钟
Owner GENERAL ELECTRIC CO