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Power cable terminations for gas insulated switchgear

A technology for gas-insulated switches and power cables, which is applied in cable terminals, switchgear, and switchgear settings, etc., can solve problems such as increasing the risk of material breakdown, and achieve the effect of reducing size

Inactive Publication Date: 2018-12-28
ABB HV CABLES SWITZERLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, there are general difficulties in increasing the delivered power for DC cable systems, such as requiring a DC solution capable of handling thermal issues generated by higher currents resulting in higher temperatures
Higher voltages also result in exposing cable terminations to higher electric fields, which dramatically increases the risk of material breakdown

Method used

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  • Power cable terminations for gas insulated switchgear
  • Power cable terminations for gas insulated switchgear
  • Power cable terminations for gas insulated switchgear

Examples

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Embodiment Construction

[0034] In the following description, for purposes of illustration and not limitation, specific details are set forth, such as particular materials, interfaces, techniques, etc., in order to provide a thorough understanding. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description with unnecessary detail. The same reference numbers refer to the same or similar elements throughout the description.

[0035] Briefly, the present disclosure provides, in various aspects, an HVDC cable termination device for a GIS.

[0036] figure 2The figure shows a cable termination in accordance with an embodiment of the disclosure. A power cable 10 is to be connected to the gas insulated switchgear 1 . The power cable 10 can be such as reference Figure 8A and Figure 8B Described power cables and other cables. exist figure 2 , a part of such a gas insulated switchgear (GIS) 1 is shown. The GIS 1 may be conve...

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PUM

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Abstract

A power cable termination device (3) for a high voltage direct current gas insulated switchgear (1) is provided. The power cable terminal device (3) includes: an outer casing (4) made of conductive material, fixedly connected to the high-voltage DC gas insulated switchgear (1) at its first end; the terminal part of the power cable (10), The power cable comprises a conductive shield (104) circumferentially surrounding the insulating layer (103) and the electrical conductor (101), the conductive shield being stripped along a first portion of the power cable (10); an electric field grading system (11), comprising a resistive A layer of field grading material (7) arranged circumferentially around the power cable (10) to extend axially at least along a portion of the electrically insulating layer (103) and covering the edge where the conductive shield (104) terminates, the layer of resistive field grading material (7) in electrical contact with the conductive shield; and connection means (5) connectable to the gas insulated switchgear (1) and arranged to provide mechanical support and electrical contact with the gas insulated switchgear (1).

Description

technical field [0001] The technology disclosed herein relates generally to the field of power cable terminations, and in particular to high voltage direct current gas insulated switchgear cable terminations. Background technique [0002] High voltage direct current (HVDC) technology can be expected to play a key role in future grids. As HVDC technology matures and the number of installed DC links increases, the need and demand for improved DC switchgear is likely to arise. Gas insulated switchgear (GIS) has a substantially reduced physical size compared to more traditional open-air switchgear installations and is likely to be of interest as a potential candidate for such an improved DC switchgear, especially because GIS also has increased security compared to conventional switchgear installations. [0003] In order to connect the power cables to the GIS system, GIS cable terminations are required. For alternating current (AC), such terminals are available over a wide ran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G15/064H02G15/22
CPCH02G15/064H02G15/30H02G15/22H02B13/035H02B1/46H02G15/06
Inventor F·法尔斯M·萨尔策C·索哈格T·阿尔伯格L·亚多尔夫森A·林德格伦
Owner ABB HV CABLES SWITZERLAND GMBH