Artículos de revistas
Distribution systems fault analysis considering fault resistance estimation
Date
2011Registration in:
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, v.33, n.7, p.1326-1335, 2011
0142-0615
10.1016/j.ijepes.2011.06.010
Author
FILOMENA, Andre D.
RESENER, Mariana
SALIM, Rodrigo H.
BRETAS, Arturo S.
Institutions
Abstract
Fault resistance is a critical component of electric power systems operation due to its stochastic nature. If not considered, this parameter may interfere in fault analysis studies. This paper presents an iterative fault analysis algorithm for unbalanced three-phase distribution systems that considers a fault resistance estimate. The proposed algorithm is composed by two sub-routines, namely the fault resistance and the bus impedance. The fault resistance sub-routine, based on local fault records, estimates the fault resistance. The bus impedance sub-routine, based on the previously estimated fault resistance, estimates the system voltages and currents. Numeric simulations on the IEEE 37-bus distribution system demonstrate the algorithm`s robustness and potential for offline applications, providing additional fault information to Distribution Operation Centers and enhancing the system restoration process. (C) 2011 Elsevier Ltd. All rights reserved.