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High voltage DC circuit breaker device and method

A high-voltage direct current, circuit breaker technology, applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of losing negative slope and difficult to have arc current

Inactive Publication Date: 2014-02-05
ABB TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The steady state current capability of the cutout is currently limited to approximately 5kA
[0009] like figure 2 As shown, the arc characteristic is a curve that loses its negative slope and becomes flat beyond a certain arc current Iarc, which makes it difficult to have a large enough arc current Iarc arc The zero-crossing oscillation of

Method used

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  • High voltage DC circuit breaker device and method
  • High voltage DC circuit breaker device and method
  • High voltage DC circuit breaker device and method

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Embodiment Construction

[0026] has been illustrated in Figure 1 and figure 2 And the same reference numerals are used throughout the drawings to designate the same or corresponding parts.

[0027] image 3 A first embodiment of the invention is shown. A DC circuit breaker device according to the invention, denoted hereinafter as DC circuit breaker device 6 , is arranged to be connected along a line L carrying a DC current I, ie in series with the line L . The line L may be a power transmission line or a connection line in the HVDC circuit.

[0028] According to the invention, the direct current I of the line L is divided into two branches B1 and B2. The two branches B1 and B2 are identical and each branch includes a DC breaker 1 1 ,1 2 , the DC circuit breaker further includes the respective first or second circuit breaker 2 described in conjunction with FIG. 1 1 ,2 2 . Respective first or second LC branch 3 1 、4 1 and 3 2 、4 2 with the respective first or second cutout 2 1 ,2 2 connect...

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Abstract

The invention provides a DC circuit breaker device used for breaking the current in a transmission line or a high voltage DC circuit. The DC circuit breaker device comprises n DC breakers in parallel connection which is in series connection with the transmission line. A reactor is connected to each DC circuit breaker. Through the device and the method, a DC circuit breaker device capable of processing very large current is provided. The invention also relates to the corresponding method.

Description

[0001] The present invention application is a divisional application of the invention patent application with the application date of November 26, 2008, the application number "200880132114.4", and the invention name "High Voltage DC Circuit Breaker Equipment and Method". technical field [0002] The present invention relates generally to the field of power transmission systems, and in particular to devices for interrupting or commutating high voltage direct current. The invention also relates to a corresponding method. Background technique [0003] High voltage direct current (HVDC) power systems include protection and control systems configured to protect, monitor and control the operation of equipment forming part of the power system. The protection system protects in particular against short circuits, overcurrents and overvoltages etc. in power transmission lines such as HVDC systems. [0004] Protective relays are used throughout HVDC systems to provide this protection...

Claims

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Application Information

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IPC IPC(8): H01H33/59
Inventor 维克托·莱斯卡勒
Owner ABB TECH AG