Understanding the electromechanical wave propagation speed

This paper deals with the phenomenon of electromechanical wave propagation in large power systems. Understanding this phenomenon is necessary for setting up an accurate source localization methodology. At the moment, localization is being performed on the assumption that the electromechanical wave propagation speed is constant - despite the fact that published research has shown that generator inertia constant and transmission line impedance have a strong impact on the speed. Of course, the localization is in general not accurate enough. This is why in this paper the analysis of these influences is presented on a 64-generator ring test power system. Such an analysis may be useful for the formation of sophisticated localization technique, which would consider structure of the studied grid itself.