Operational control and protection implications of fault current limitation in distribution networks

Blair, S.M. and Singh, N.K. and Booth, C.D. and Burt, Graeme M. (2009) Operational control and protection implications of fault current limitation in distribution networks. In: 2009 Proceedings of the 44th International Universities Power Engineering Conference (UPEC). IEEE, New York. ISBN 9781424468232

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    Abstract

    Rising short-circuit fault current levels is one of the problems associated with the increased presence of distributed generation (DG) in electrical networks. A fault level management system involving superconducting fault current limiters (SCFCLs) is a potential solution to this issue. The typical applications of SCFCLs and their advantages over traditional fault current limitation measures are discussed. However, several technical issues remain, relating to: SCFCL post-fault recovery time; network control and protection; and maloperation of the SCFCL due to non-fault transient currents, such as transformer inrush. Initial solutions to these problems, involving a distributed software-based fault level management system, are presented.