Use of superconducting fault current limiters for mitigation of distributed generation influences in radial distribution network fuse-recloser protection systems

In this study, extensive dynamic simulation studies are carried out to explore the impact of synchronous machine (SM)-based distributed generation (DG) integration on existing radial fuse-recloser protection infrastructure. Furthermore, dynamic simulation studies are also conducted to highlight the use of superconducting fault current limiters (SFCLs) to mitigate such an impact. These studies have included the effects of SM-based DG sources on fuse-recloser coordination and recloser sensitivity adequacy. In addition, a comparison between the performances of two different SFCL types has been also offered. The dynamic results of these investigations have shown that the presence of SFCLs has prevented any excessive fault current contribution from SM-based DG sources, as a result, it has restored the fuse-recloser coordination and recloser sensitivity adequacy. Within the frame of reference of the study is the dynamic simulations of a test benchmark that have been conducted using the PSCAD/EMTDC software.