| 摘要 |
The present invention relates to a high voltage DC breaker for breaking fault current, flowing through a DC line for power transmission and distribution, in the event of a fault occurring at one side of the DC line. A high voltage DC breaker for breaking electric current flowing through a DC line, according to the present invention, comprises: a main switch, installed in the DC line, which is opened in the event of a fault occurring at one side or the other side of the DC line to thereby break the electric current of the DC line; a nonlinear resistor connected in parallel to the main switch; an LC circuit, connected in parallel to the main switch, including a capacitor and a reactor which are connected in series to each other to generate LC resonance; a first bidirectional switching element, connected in series to the LC circuit, for switching a bidirectional current flow on and off; and a second bidirectional switching element, connected in parallel to the LC circuit, for switching current flow on and off to generate LC resonance bidirectionally. |
