HIGH VOLTAGE DC CIRCUIT BREAKER

The present invention relates to a high voltage direct current (DC) circuit breaker in which a vacuum interrupter part and a gas circuit breaker part are connected in series such that the fault current flowing in a high voltage DC line is broken. The DC circuit breaker according to the present inven...

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Bibliographic Details
Main Authors HWANG, HUI DONG, KIM, NAM KYUNG, CHUNG, YOUNG HWAN
Format Patent
LanguageEnglish
French
Korean
Published 07.07.2016
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Summary:The present invention relates to a high voltage direct current (DC) circuit breaker in which a vacuum interrupter part and a gas circuit breaker part are connected in series such that the fault current flowing in a high voltage DC line is broken. The DC circuit breaker according to the present invention comprises: the vacuum interrupter part provided at the DC line, and operating when an error occurs at one side or the other side of the DC line, so as to break the current in the DC line; the gas circuit breaker part connected in series to one side of the vacuum interrupter part; an LC circuit connected in parallel to the vacuum interrupter part (110) and including a capacitor and a reactor, which are connected in series, for generating LC resonance; a first bidirectional switching element connected in series to the LC circuit so as to switch a bidirectional current flow; and a second bidirectional switching element connected in parallel to the LC circuit, and switching a current flow so as to form the bidirectional LC resonance. La présente invention concerne un disjoncteur à courant continu (CC) à haute tension dans lequel une partie interrupteur à vide et une partie disjoncteur à gaz sont connectées en série de sorte que le courant de défaut circulant dans une ligne de CC à haute tension soit interrompu. Le disjoncteur à courant continu selon la présente invention comprend : la partie interrupteur à vide disposée au niveau de la ligne de CC et fonctionnant lorsqu'une erreur se produit au niveau d'un côté ou de l'autre côté de la ligne de CC de manière à couper le courant dans la ligne de CC ; la partie disjoncteur à gaz connectée en série à un côté de la partie interrupteur à vide ; un circuit LC connecté en parallèle à la partie interrupteur à vide (110) et comprenant un condensateur et un réacteur, qui sont connectés en série, pour générer une résonance LC ; un premier élément de commutation bidirectionnel connecté en série au circuit LC de manière à commuter un flux de courant bidirectionnel ; et un second élément de commutation bidirectionnel connecté en parallèle au circuit LC, et commutant un flux de courant de manière à former la résonance LC bidirectionnelle. 본 발명은 진공차단부와 가스차단부를 직렬로 연결하여 고전압 DC 선로에 흐르는 고장전류를 차단하도록 하는 고전압 DC 차단기에 관한 것이다. 본 발명에 따른 고전압 DC 차단기는, 직류(DC) 선로에 설치되고 상기 DC 선로의 일측 또는 타측에 고장발생시 동작하여 상기 DC 선로의 전류를 차단하기 위한 진공차단부; 상기 진공인터럽터의 일측에 직렬로 연결된 가스차단부; 상기 진공차단기(110)에 병렬연결되고 LC 공진을 발생하기 위해 직렬연결된 커패시터 및 리액터를 포함하는 LC 회로; 상기 LC 회로에 직렬연결되어 양방향 전류흐름을 스위칭하는 제1 양방향 스위칭소자; 및 상기 LC 회로에 병렬연결되어 양방향으로 LC 공진이 이루어지도록 전류흐름을 스위칭하는 제2 양방향 스위칭소자를 포함한다.
Bibliography:Application Number: WO2015KR14286