Frequency-dependent cables for the calculation of line short-circuit currents in HVDC networks

In this paper the contribution of HVDC cables to the short-circuit current during a fault in an HVDC system is analyzed. The cable is implemented as a frequency-dependent model in a monopolar and bipolar configuration. The first part of the paper covers the calculation of the line parameters in dependence of the frequency. Special attention is given to the grounding of the sheath. In the second part line-to-line and line-to-earth short circuit currents are simulated and calculated for different HVDC cable types in several line topologies.