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Gas insulated switchgear using insulating gas or fluid and production method thereof

A technology of gas insulated switch and insulating gas, applied in the field of gas insulated switchgear

Active Publication Date: 2019-11-12
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because there is only short-term experience and no long-term experience, new technologies may include technical risks that are not fully known

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  • Gas insulated switchgear using insulating gas or fluid and production method thereof
  • Gas insulated switchgear using insulating gas or fluid and production method thereof
  • Gas insulated switchgear using insulating gas or fluid and production method thereof

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Embodiment Construction

[0034] figure 1 A switchgear arrangement is shown with an outer shell and an inner shell with an insulating gas-filled compartment in which a switching element is arranged. Usually, the gas-filled compartments in so-called gas-insulated switchgears contain at least the busbars, and the switches, which may be located in separate gas compartments.

[0035] Sulfur hexafluoride (SF 6 ) is a commonly used insulating gas.

[0036] According to the aforementioned SF 6 high global warming potential (GWP), using other insulating gases with significantly lower global warming potential.

[0037] The insulating gas is available.

[0038] It is therefore the object of the invention to replace, for example, the initial insulating gas of medium-voltage and high-voltage switchgears with a new insulating gas on site at a later time.

[0039]Said new insulating gases (like fluoroketones or fluoronitriles) have to be handled in switchgear installations.

[0040] Therefore, for new builds o...

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Abstract

The present invention relates to a gas insulated switchgear for medium or high voltage applications, using insulating gas or fluid in the enclosure of the switchgear compartment, wherein the switchgear uses sulfur hexafluoride (SF 6 ) as an insulating gas. In order to take into account the use of previous insulating gases based on experience and proven use and to anticipate the possibility of using a new generation of gases with the same gas-insulated switchgear installation, the invention consists in that the structural features of the switchgear are designed such that these Features in the use of sulfur hexafluoride (SF 6 ), but these structural features already have sufficient performance when using an eco-efficient insulating gas with up to 20% of fluoroketone C 5 f 10 Mixture of O with air or oxygen and carbon dioxide, where the switchgear is later retrofitted or adapted to be filled with an eco-efficient insulating gas, e.g. using a mixture of fluoroketones and air, only the aforementioned gases need to be replaced, but not the switches Structural components of the cabinet.

Description

technical field [0001] The present invention relates to a gas insulated switchgear for medium or high voltage applications, using insulating gas or fluid in the enclosure of the switchgear compartment, wherein the switchgear uses sulfur hexafluoride (SF 6 ) as the insulating gas, and the invention relates to a production method of the gas insulated switchgear. Background technique [0002] Gas insulated switchgear has been used in medium and high voltage applications since about 50 years ago. The widely used insulating gas in most applications is SF 6 , which is known as sulfur hexafluoride. Thanks to SF 6 It has a high global warming potential (GWP), so it has disadvantages. Accordingly, the use of other gas mixtures is being discussed, and the first candidate gas mixtures with acceptable dielectric parameters have emerged. Such a gas is, for example, a mixture of a fluoroketone and a carrier gas such as dry air. [0003] Since the dielectric and thermal properties of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B13/055H02B3/00H01B3/16
CPCH02B3/00H02B13/055H01H11/00H01H33/56
Inventor M·海兰巴赫
Owner ABB (SCHWEIZ) AG