Power system transient stability assessment based on geometric features of disturbed trajectory and DTW

A method based on determining similarity of disturbed trajectories through DTW distance for power system transient stability assessment is presented in this paper. By sampling to obtain the equivalent system´s disturbed trajectories, clustering algorithm is used to extract the typical trajectory. Compare the similarity of real trajectories with typical trajectory, and then use least squares support vector machine classifier for transient stability assessment. A 36-bus power system was simulated using PSASP (power system analysis software package). Simulation results show the effectiveness of proposed method.