Abstract
This paper presents a time domain technique used to solve the fault location problem for power distribution systems considering the dynamic load model. The proposed technique uses the voltage and current signals during the transient and steady states, measured at the main distribution substation, through time and phasor domain iterative analysis. The load dynamics is considered by its estimation at each sampling step. The accuracy of the proposed technique is determined by using a fault database obtained from the IEEE 34 bus distribution system. The fault locator is tested considering uncertainties associated with the fault type, fault resistance, voltage magnitude and angle unbalance at the source, load magnitude, power factor and the power system frequency. The obtained results show that the fault locator accuracy depends on the time of data acquisition, and the obtained performance is adequate for utility applications.
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