Interrupting chamber, HVDC bypass interruptor and HVDC-conversion substation with such a chamber

Abstract

The chamber (1) has a tubular shaped arc blast isolating nozzle (5) extending along a longitudinal axis (XX'). A movable contact (3) includes a hollow inner tube (30) whose end is connected to a contact portion (31) of the movable contact, where arc blowing is entirely realized inside of the hollow tube along the longitudinal axis of the chamber. A neck (304) is provided in upstream of the contact portion for passage of gas. A release portion (305) is provided between the neck and the contact portion for passage of gas. An independent claim is also included a high-voltage direct-current conversion substation comprising a thyristor through which opening of a loading valve is realized.

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] It involves interrupting the blowing of gas in the chamber.

[0004] More specifically, it applies to the construction of HVDC bypass interrupters, as well as their integration 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 bypass interrupters 12 , 13 or 14 , 15 ....

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