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Hybrid switching device for power grid

A switchgear and power network technology, applied in the field of power network, can solve problems such as heavy manufacturing costs

Pending Publication Date: 2022-06-17
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As such, they are generally bulky and expensive to manufacture at an industrial level

Method used

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  • Hybrid switching device for power grid
  • Hybrid switching device for power grid
  • Hybrid switching device for power grid

Examples

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Embodiment Construction

[0070] With reference to said figures, the present invention relates to a hybrid switchgear 1 for a power grid.

[0071] The switchgear of the present invention is particularly suitable for use in low voltage DC power grids and will be described below with particular reference to these applications only for the sake of brevity and is not intended to limit the scope of the present invention in any way.

[0072] The switchgear of the present invention can in fact be successfully used in different types of power systems, such as low voltage AC power grids or medium voltage AC or DC power grids.

[0073] For the purposes of this application, the term "low voltage" (LV) refers to working voltages below 1 kV AC and 1.5 kV DC, while the term "medium voltage" (MV) refers to more than 1 kV AC and 1.5 kV DC up to several tens of kV Operating voltage in kV (eg up to 72 kV AC and 100 kV DC).

[0074] The switchgear 1 comprises first and second electrical terminals 11, 12 for electrical c...

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Abstract

A switching device for an electrical power grid comprises:-first and second electrical terminals; -a first electrical branch; -a second electrical branch comprising a plurality of switching devices of the solid state type, each of said plurality of switching devices comprising one or more switching components based on semiconductor material. The second electrical branch is electrically connected in parallel with the first electrical branch between the first and second electrical terminals. The switching device includes a current blocking circuit adapted to block a current flowing along the second electrical branch. The current blocking circuit includes a first switching device of a solid state type and a first electronic circuit electrically connected in parallel to the first switching device of the solid state type. The switching device further comprises a current limiting circuit adapted to limit a current flowing along the second electrical branch. The current limiting circuit is electrically connected in series with the current blocking circuit, and it includes a second switching device of the solid state type and a second electronic circuit electrically connected in parallel to the second switching device of the solid state type.

Description

technical field [0001] The present invention relates to the field of power grids. The present invention more particularly relates to hybrid switchgear for providing circuit protection functionality in a power grid, such as a DC power grid. Background technique [0002] DC power grids are widely used in a variety of applications, such as photovoltaic systems, naval systems, battery-based energy storage systems (BESS), and the like. [0003] As is known, when a fault event (eg, overload or short circuit) occurs in a DC wire, many electrical components electrically connected to the wire can potentially feed such an electrical fault. [0004] Obviously, this can lead to catastrophic consequences, especially when power generation systems (eg photovoltaic panels) or electrical energy storage systems (eg batteries) are installed in the power grid. [0005] To prevent such unforeseen events, DC power grids typically include a plurality of switchgears configured in such a way as to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/087H02H7/26H02H9/06H02H9/02
CPCH02H3/087H02H7/268H02H9/06H02H9/02H01H9/542H01H2009/546H02H3/025H02H7/22
Inventor T·斯特拉塞尔A·安东尼亚齐M·阿普拉纳尔普T·德拉绍
Owner ABB (SCHWEIZ) AG
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