ABSTRACT

This paper deals with the identification of a faulty load bus in a standard multi-bus power system for line to line fault, monitoring the system parameters in presence of various frequencies in P-δ plane. Advanced variable slack bus incorporated converged power flow analysis has been used for determining the load angle, real power and feeder operating points for normal and at fault in various load buses of the network in presence of some chosen harmonic frequencies in the system. The shifting of the normal and fault operating points have been monitored on the normal and fault P-δ planes, and depending on the characteristic feature of the operating points in the P-δ plane, respective fault buses have been identified by developing rule sets.