Realistic Evaluation of Resistive Superconducting Fault Current Limiters in Distribution Networks

This paper investigates the application of Superconducting Fault Current Limiters (SFCLs) in a real distribution grid using Matlab Simulink. The grid, encompassing six strategically positioned substations interconnected by distribution lines, serves as a platform for this study. Extensive simulations explore the SFCLs' effectiveness in various fault scenarios, including single-phase-to-ground, double-phase, double-phase-to-ground, and three-phase faults. The findings indicate that SFCLs significantly enhance voltage stability and effectively limit fault currents during these events, thereby protecting equipment from damage and maintaining grid stability. Furthermore, SFCLs demonstrate selective activation depending on the fault type and phase, ensuring minimal disruption to the grid's regular operation. The research incorporates temperature and resistance analysis, revealing the dynamic resistance and temperature changes in each layer of the 2G YBCO material. This detailed examination affirms the safe functioning of SFCL components, demonstrating their reliability and effectiveness within the grid infrastructure.