Research Article
Interrupting Short-Circuit Direct Current Using an AC Circuit Breaker in Series with a Reactor
Table 1
Means of interrupting DC faults.
| Method | Commercial technology available | Technical challenges |
| On AC side by means of conventional AC circuit breakers | Yes | Large and prolonged fault currents due to several AC cycle interruption times. Overrating necessary for generator frequencies above 60 Hz | On DC side by means of electromechanical DC circuit breakers | Yes | Commercial solutions limited to less than 4.5 kV DC | On DC side by means of power electronic switches | No | Additional losses. Development of technology necessary |
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