Abstract
High-temperature superconducting (HTS) fault current limiters (FCLs) can make electricpower networks more reliable. For an inductive type FCL we have developedand applied a special design to significantly reduce the impedance in normaloperation mode, and to properly adjust the impedance in limitation mode. The FCLcan be designed with predictable parameters, and can withstand thousands ofactivation and recovery cycles. For practical application of HTS FCLs in industrialenvironments we have investigated the possibilities to increase power rating andreliability. For the purposes mentioned we have examined various FCL topologies:series, parallel and matrix arrangements. In this paper we present the results ofexperimental studies of the mentioned and practically useful FCL topologies. Tests wereperformed for series and parallel connections of FCLs to investigate the faultprocesses in the individual units and the resultant effects of the whole FCL group.
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