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High impedance fault detection using power line communication techniques

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3 Author(s)
Milioudis, A.N. ; Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece ; Andreou, G.T. ; Labridis, D.P.

The detection of high impedance faults has been an important research field for many years. The insignificant increase of the line current in case of such faults makes their detection a difficult task, although at the same time a crucial one for reasons of public safety. In this work, the influence of a high impedance fault on the line's overall input impedance is examined, for frequencies within both the CENELEC A Band and the typical high speed PLC range. The tested line configurations correspond to phase to phase and phase to ground signal injections. Also, the different effects of a high impedance fault according to the exact fault location and the line termination are investigated. Finally, a comparison among the results concerning the two selected frequency bands is conducted, in order to determine the one with the most desirable performance.

Published in:

Universities Power Engineering Conference (UPEC), 2010 45th International

Date of Conference:

Aug. 31 2010-Sept. 3 2010