杨志刚,曾涛,陈华丰.基于S变换和规则基的复合电能质量扰动识别[J].电测与仪表,2015,52(12):. yangzhigang,zengtao,chenhuafeng.Multiple Power Quality Disturbance Identification Using S Transform and Rule Based classification technique[J].Electrical Measurement & Instrumentation,2015,52(12):.
基于S变换和规则基的复合电能质量扰动识别
Multiple Power Quality Disturbance Identification Using S Transform and Rule Based classification technique
A new approach to recognize multiple power quality disturbances is proposed. Firstly, based on S-transform five kinds of features in power quality disturbance signals are extracted and using fast Fourier transform (FFT) combined with dynamic measure method six features in power quality disturbance signals are extracted. Disturbance signals are characterized by these features from the baseband, intermediate frequency, high-frequency, standard deviation of the fundamental frequency, extreme point symmetry and variations of spectrum. Characteristics aliasing or failures because of interferences between the single disturbance were fully considered in this method. Then a classifier is designed with eight rules in the form of “IF- THEN”, finally features were input into the rule-based classifier for the disturbance identification. Simulation results show that the method can effectively recognize the compound power quality disturbances with the noise including eight single disturbances and eighteen double disturbances.
