Contribution of Fault Current Sources in Multiterminal HVDC Cable Networks

The scope of this paper is the investigation of the development of fault currents in a circuit breaker (CB) during a pole-to-ground fault in a generic multiterminal HVDC cable system based on voltage-source converters. It aims to contribute to the current discussion of which requirements on breaking time and peak current HVDC CBs need to fulfill in such networks. Therefore, the fault current is broken down into the individual contributions from the different network components, and the influence of the key parameters on the development of the fault current in the CB of the faulted cable is illustrated.