Impact of a resistive superconductive fault current limiter in a multi-terminal HVDC grid

摘要

The relevance of multi-terminal HVDC grids is expected to increase in next years. However, there are still several technical, economical and legal limitations that interfere with the construction of those multi-terminal links. One of the main technical obstacles is the handling of DC fault currents, because the interruption of DC currents in HVDC systems is nowadays a challenge. Among other proposals, the application of Superconducting Fault Current Limiters (SFCLs) combined with a mechanical Circuit Breaker (CB) solves technically that issue, according to the analysis and simulation results presented in this paper.