Interruptor chamber, HVDC bypass interrupter and high voltage direct current converting plant comprising such chamber

A technology of linear motion and disconnection operation, applied in high-voltage/high-current switches, high-voltage air circuit breakers, circuits, etc., which can solve the problems of increased radial size and cost of interruption chambers

Inactive Publication Date: 2010-12-01
ALSTOM TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This inevitably leads to an increase in the radial dimension of the interruption chamber, and thus its cost

Method used

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  • Interruptor chamber, HVDC bypass interrupter and high voltage direct current converting plant comprising such chamber
  • Interruptor chamber, HVDC bypass interrupter and high voltage direct current converting plant comprising such chamber
  • Interruptor chamber, HVDC bypass interrupter and high voltage direct current converting plant comprising such chamber

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Embodiment Construction

[0057] Figure 2B and 2C The interruption position in the single interruption chamber of the HVDC bypass interrupter of the present invention is shown in . On average, for HVDC bypass interrupters whose voltages can reach at least 400kV in direct current (DC), the current to be interrupted is relatively weak as it can reach several hundred amperes or even 1000A.

[0058] figure 1 Curves are shown representing the voltage in an HVDC system that may be present at the terminals of an HVDC bypass interrupter made according to the invention once the current flow has been interrupted. The current flowing in the interrupter has a similar periodicity. It should be observed that there are oscillations at a high frequency of about twelve times the frequency of the AC power system to which the HVDC converter substation comprising the HVDC bypass interrupter is connected.

[0059] Thus, the difficulty in interrupting direct current comes from the fact that zero current occurs several ...

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Abstract

The invention relates to a novel dynamic model for an interruptor chamber, a HVDC bypass interrupter and a movable contact and a blowing nozzle in a high voltage direct current converting plant comprising the chamber. According to the invention, the movable contact (3) and the blowing nozzle (5) are independently actuated using one way, thus the contact is at the closed position and the nozzle (5) is at the restriction position (C) and at least extends betwent the subsection screens (40,41) and arounds the contact (2,3); at the off operation period, the tubular nozzle (5) is kept on the limit position in principle, at least until each movable contact (3) is at the off position; once the off operation is accomplished, the striking current is cut off and the tubular nozzle (5) moves to the retraction position (R) and retracts from the insulation space.

Description

technical field [0001] The invention relates to an interruption chamber. [0002] More specifically, it concerns the interruption of high voltage direct current (HVDC). [0003] The invention relates to the dynamics of a moving contact and an air blowing nozzle in an interruption chamber. [0004] More specifically, it applies to the construction and integration of HVDC bypass interrupters into HVDC converter substations. Background technique [0005] The purpose of an HVDC converter substation is to convert direct current at high voltage (typically greater than 200 kilovolts (kV) DC) to alternating current also at high voltage. [0006] One architecture of an HVDC transmission system utilizing multiple HVDC substations is described eg in patent document WO 2007 / 084041. The system described therein comprises two substations 2 and 3 connected to each other by a high voltage power line 10 and a ground return line 11 . Each substation 2 or 3 comprises a plurality of HVDC by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/91H02J3/36
CPCH01H33/7023H01H33/91
Inventor 斯哈伯沃夫冈
Owner ALSTOM TECH LTD
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