Abstract

BEDOYA-CADENA, ANDRÉS; MORA-FLOREZ, JUAN  and  PEREZ-LONDONO, SANDRA. EXTENDED APPLICATION OF A SEQUENCE IMPEDANCE BASED FAULT LOCATION TECHNIQUE APPLIED TO POWER DISTRIBUTION SYSTEMS. Dyna rev.fac.nac.minas [online]. 2013, vol.80, n.179, pp.165-175. ISSN 0012-7353.

This paper presents the definition and the extended application of a fault location technique for power distribution systems based on the well defined equivalent sequence networks. The proposed location technique uses single end measurements of voltage and current and considers variable load, through a proportional factor applied to the measured currents. The analysis is presented for three types of shunt faults, single phase to ground faults, phase to phase faults and three phase faults. The localization technique is tested on the 34 bus IEEE test feeder of 24.9kV; it includes three-phase and single phase laterals, for all types of faults in two different load scenarios and considering fault resistances between 0W and 40W. The estimation errors obtained in fault distance lower than 2.5%.

Keywords : Power quality; fault location; impedance based techniques; equivalent feeder; sequence networks and power distribution systems.

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