Power Quality Disturbances Classification Based on S-Transform and Time Domain Analysis
Yang Ren-gang · 2006
The authors propose a new approach to detect and classify power quality disturbances by combining the S-transform with time-domain analysis,in which the time-domain information and amplitude matrix of S-transform of signals are used to rapidly extract the features corresponding to various disturbances in power quality,and by means of simple rule-based classification tree the specified disturbance can be recognized to avoid the fair-sized error caused by insufficient training samples,therefore the classification efficiency can be improved.Simulation results show that the proposed method possesses high recognition rate and strong resistances to noises,so it is suitable to the monitoring and classification system for power quality disturbance.