According to the different features of short-term power quality variation and transient disturbance

the mathematical models of frequent power quality disturbances(PSD) were established.In this method the time characteristic of the disturbance is extracted by wavelet transform;the duration

amplitude and frequency of the disturbance and the absolute value of voltage regulation are taken as the inputs of classifiers to test classification accuracies.The fundamental of support vector machine(SVM) based on struc...