Power cable termination device for gas-insulated switchgear
A gas-insulated switch and power cable technology, which is applied in the direction of cable terminals, switchgear, switchgear settings, etc., can solve the problems of increasing the risk of material breakdown and achieve the effect of reducing size
Inactive Publication Date: 2016-10-12
ABB HV CABLES SWITZERLAND GMBH
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- Abstract
- Description
- Claims
- Application Information
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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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[0034] In the following description, for purposes of explanation and not limitation, specific details are set forth such as specific 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, HVDC cable termination devices for GIS.
[0036] figure 2The figure illustrates a cable termination in accordance with an embodiment of the present disclosure. A power cable 10 is to be connected to the gas-insulated switchgear 1 . The power cable 10 may be such as the reference Figure 8A and Figure 8B Cables that describe power cables, etc. exist figure 2 In the figure, a part of such a gas-insulated switchgear (GIS) 1 is shown. T...
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A power cable termination device 3 for a high voltage direct current gas-insulated switchgear 1 is provided. The power cable termination device 3 comprises: an outer housing 4 made of an electrically conducting material, the outer housing 4 being fixedly connectable at a first end thereof to the high-voltage direct current gas-insulated switchgear 1; a terminal portion of a power cable 10, the power cable comprising an electrical conductor 101, an electrically insulating layer 103 circumferentially surrounding the electrical conductor 101, and a conductive shield 104 circumferentially surrounding the insulating layer 103 and the electrical conductor 101, wherein the conductive shield 104 is stripped off along a first part of 10 the power cable 10; an electric field grading system 11 comprising a resistive field grading material layer 7 arranged circumferentially around the power cable 10 such as to extend axially at least along a part of the electrically insulating layer 103 and such as to cover the edge of the conductive shield 104 where the conductive shield 104 is terminated, the resistive field grading material layer 7 being in electrical 1 contact therewith, and a connection device 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 DC gas insulated switchgear cable terminations. Background technique [0002] High-voltage direct current (HVDC) technology can be expected to play a key role in future power 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 improved DC switchgear, especially because GIS also has increased safety compared to traditional switchgear installations. [0003] In order to connect the power cables to the GIS system, GIS cable terminations are required. For alternating current (AC), such terminations are available over a wide range of vol...
Claims
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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