Voltage sag propagation in systems with embedded generation and induction motors

The paper present results of the analysis of the voltage sag propagation in a distribution system. The assessment of the voltage sag propagation has been made on the generic distribution network. Different network topologies of a generic network with and without embedded generators and induction motors are used in the study. Symmetrical and asymmetrical faults were simulated at various voltage levels and locations. New indices for assessment of voltage sag propagation are proposed. The influence of embedded generators and induction motors on voltage sag characteristics and propagation is also analysed.