Application of wavelet transform for assessing power quality in medium voltage industrial distribution system

The increasing weight of power quality in the deregulated era has called attention to the importance of identifying the source of power quality problem when it arises. This paper focuses on capacitor switching events. Capacitor switching transient depends on capacitor location, load type, load level, voltage level and instant of switching. The effect of these factors on capacitor transient is thoroughly examined using wavelet and fast Fourier transforms. Based on this assessment features, which could be used in identifying the location of the capacitor which initiate the transient is nominated.