This paper presents a new idea for studying and analyzing of large electric power systems. The paper supposes that the model is a spatial type, which gives a new approach to model the power system as a continuum model in time and position. Hence, the phenomenon of electromechanical wave propagation and faults spreading throughout the system is appeared. A MATLAB simulation is carried out and the results show the effect of three different power system parameters on the wave propagation: number of generators in the system, internal impedances of these generators and load power factor. These effects were studied and the relation between these parameters and the wave propagation was demonstrated.