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Influence of DGs on the single-ended impedance based fault location technique

Jahanger, Hayder K; Sumner, Mark; Thomas, David W P

Authors

Hayder K Jahanger hayder.jahanger@nottingham.ac.uk

MARK SUMNER mark.sumner@nottingham.ac.uk
Professor of Electrical Energy Systems

DAVID THOMAS dave.thomas@nottingham.ac.uk
Professor of Electromagnetics Applications



Abstract

— The penetration of Distributed Generation (DG) into electricity distribution systems or the integrated power system such as ship or aircraft power systems present a challenge to fault location techniques. This paper investigates the influence of inverter based DG on a single-ended fault location scheme which uses impedance measurement made from the high frequency content of fault transient. The additional non-fundamental frequency current components contributed from the DG will influence the accuracy of this type of impedance based fault location technique. A single-ended impedance based fault location technique that utilizes the high frequency content (up to 3 kHz) is studied. The study shows that the single-ended method is still able to locate faults with maximum error of 4% compared to the case without DG (which showed a percentage error up to 1%). The study also showed that the DG location has a small influence on the accuracy of the scheme.

Start Date Nov 7, 2018
Book Title NA
Chapter Number NA
ISBN NA
APA6 Citation Jahanger, H. K., Sumner, M., & Thomas, D. W. P. (in press). Influence of DGs on the single-ended impedance based fault location technique
Keywords DG; single-ended; Fault location; Microgrid
Related Public URLs http://www.esars.eu/wp2018/
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