Transient short circuit current calculation using decoupled networks

Classical fault analysis methods for power systems are based on symmetrical components to represent various fault configurations. The complete electri cal network is decomposed using a complex transformation matrix into decoup led zero, positive and negative sequence circuits. Faulted power system ste ady-state voltages and currents are computed using a nodal analysis solutio n method. This paper presents an extension of the above methodology using discretized RLC elements for the computation of the actual transient response of a net work for various fault types. The decoupled networks are obtained using a r eal transformation matrix.