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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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Automatic fault location for underground distribution network

Siew, W.H. and Soraghan, J.J. and Hosabettu, N. and Stewart, M.G. (2005) Automatic fault location for underground distribution network. In: 18th International Conference and Exhibition on Electricity Distribution, 2005. CIRED 2005, 2005-06-06 - 2005-06-09.

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Abstract

This paper describes an automatic fault location technique for permanent faults in Underground Low Voltage Distribution Networks (ULVDNs). The system pre-processes Time Domain Reflectometry (TDR) signals to eliminate reflections due to tee-offs, and to locate 3-phase open or short circuit faults. The system also uses adaptive filtering to analyse the TDR signals to locate single and phase-to-phase faults. The procedure not only minimises the interpretation skill required from a user of a typical TDR based fault location instrument, but also differentiates between singlephase tees and faults. The performance of the new method was evaluated relative to current practice, using field data that were obtained from real ULVDNs.