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Superconducting Fault Current Limiters (SFCLs) have reached a mature Technology Readiness Level, making their deployment in power grids increasingly relevant. While applications in AC networks are well studied, HVDC grids pose distinct chal-lenges due to different fault dynamics and the reliance on Modular Multilevel Converters (MMCs). This work develops a mathematical model of a simplified DC grid including an SFCL based on High-Temperature Superconducting (HTS) tapes and an MMC repre-sented by an Averaged Value Model (AVM). The model couples net-work and converter dynamics with the nonlinear temperature- and current-dependent properties of the SFCL, enabling efficient para-metric studies under fault conditions. The analysis investigates key design parameters, such as the HTS tape length, highlighting their influence on SFCL and grid performance and providing guidelines for optimal device design.
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Bocchi et al. (2026) studied this question.
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