Automatic fault location for underground low voltage distribution networks

Author

Navaneethan, S. ; Soraghan, J.J. ; Siew, W.H. ; McPherson, F. ; Gale, P.F.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

Volume

16

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

346

Lastpage

351

Abstract

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

Keywords

computerised instrumentation; fault location; power distribution faults; short-circuit currents; signal processing; time-domain reflectometry; underground distribution systems; TDR signals processing; adaptive filtering; automatic fault location; fault location performance; interpretation skill minimisation; permanent faults; three-phase open-circuit faults location; three-phase short-circuit faults location; time domain reflectometry instrument; underground low voltage distribution networks; Cables; Circuit faults; Fault location; Instruments; Low voltage; Medium voltage; Power transmission lines; Reflection; Reflectometry; Signal analysis;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.915506

Filename

915506