This paper describes an automatic fault location technique for permanent faults in underground LV distribution networks (ULVDNs). It uses signals from an existing time domain reflectometry (TDR) instrument. It pre-processes TDR signals to eliminate reflections due to single-phase tee-offs, and to locate 3-phase open or short circuit faults and also uses adaptive filtering to compare the TDR signals to locate faults. In essence, the procedure minimizes the interpretation skill required from a user of a typical TDR based fault location instrument. The relative performance of the system is demonstrated using real field data.
- fault location
- signal processing
Navaneethan, S., Soraghan, J. J., Siew, W. H., MacPherson, F., & Gale, P. F. (2001). Automatic fault location for underground low voltage distribution networks. IEEE Transactions on Power Delivery, 16(2), 346-351. https://doi.org/10.1109/61.915506