Structural Analysis Based Method for Estimating Critical Clearing Time without Time Domain Simulation

This paper presents preliminary results of a joint research on power system dynamics. Specifically, we present a structural analysis based method for estimating critical clearing time for power system dynamic stability analysis. The proposed method only relies on the structural information of the power grid, thus no time domain simulation employed in the estimation process. The method is illustrated using IEEE 9-bus system and some comparison results using a large-scale power system model are presented.