Frequency spectrum analysis of corona discharge source measured by ultrasound detector

Abstract

Portable ultrasonic detectors are useful for detection of electrical discharge phenomena like as corona occurring in an electric system. But the general potable ultrasonic detectors have drawbacks that the results of judgment about whether there is discharge are under the influence subjective reaction of users and it is difficult to determine the type of problem by listening to sound properties and estimate results. So a new analysis method distinguishing ultrasonic characteristics is required. This paper presented ultrasonic wave analysis case study to visualize ultrasonic sound measured by ultrasonic detector. © 2012 Springer-Verlag Berlin Heidelberg.