A New Approach to the Transient Stability Problem

This paper first gives an approximate analytical solution to the swing equation with zero damping by an operational method; then proceeds to the analysis of the swing equation in the phase plane. By correlating the maxima and minima of potential energy with the singular points of the swing equation, a rapid way of determining the critical clearing angle and time is given. The results obtained by the methods proposed are then compared with those of other methods.