DC voltage line circuit breaker
View Patent ↗A direct current circuit breaker has a first to fifth node. A first breaker is arranged between the first node and the fourth node, and a second breaker is arranged between the fourth node and the third node. A parallel circuit of a commutator device is arranged parallel to an energy absorber between the fourth node and the fifth node, and a switch is arranged in series to the parallel circuit. A series circuit containing a semiconductor switch and a resistor is arranged between the second node and the third node.
1. A DC voltage line circuit breaker, comprising:
a first node;
a second node;
a third node;
a fourth node;
a fifth node;
a first interrupter disposed between said first node and said fourth node;
a second interrupter disposed between said fourth node and said third node;
a parallel circuit containing a commutator device and an energy absorber disposed between said fourth node and said fifth node;
a switch disposed in series with said parallel circuit; and
a series circuit having a semiconductor switch and a resistor disposed between said second node and said third node.
2. The DC voltage line circuit breaker according to claim 1 , wherein said semiconductor switch is a thyristor.
3. The DC voltage line circuit breaker according to claim 1 , wherein said commutator device contains a another series circuit having a commutator resistor, a commutator coil and a commutator capacitor.
4. The DC voltage line circuit breaker according to claim 1 , wherein said first interrupter is an SF6 interrupter.
5. The DC voltage line circuit breaker according to claim 1 , wherein said second interrupter is a vacuum interrupter.
6. A method for operating a DC voltage line circuit breaker containing:
a first node;
a second node;
a third node;
a fourth node;
a fifth node;
a first interrupter disposed between the first node and the fourth node;
a second interrupter disposed between the fourth node and the third node;
a parallel circuit containing a commutator device and an energy absorber disposed between the fourth node and the fifth node;
a switch disposed in series with the parallel circuit; and
a series circuit having a semiconductor switch being a thyristor and a resistor disposed between the second node and the third node, which comprises the steps of:
opening the switch at a beginning of the method;
detecting a rise in a current intensity of an electrical current flowing in the DC voltage line circuit breaker;
closing the switch;
opening the second interrupter;
switching on the thyristor; and
opening the first interrupter.
7. A DC line system, comprising:
a DC voltage line circuit breaker, containing:
a first node;
a second node;
a third node;
a fourth node;
a fifth node;
a first interrupter disposed between said first node and said fourth node;
a second interrupter disposed between said fourth node and said third node;
a parallel circuit containing a commutator device and an energy absorber disposed between said fourth node and said fifth node;
a switch disposed in series with said parallel circuit; and
a series circuit having a semiconductor switch and a resistor disposed between said second node and said third node.
8. The DC line system according to claim 7 , further comprising a mesh.