Vplyv krátkodobého tepelného namáhania na výbojovú činnosť

Abstract

This article discuss about partial discharge measurements on high voltage stator coil from asynchronous machine which was short-term thermal stressed. From individual measurements were done two-dimensional plots - phase-resolved partial discharges patterns of the maximal and the mean value of apparent charges and the mean value of frequencies. Moreover there were calculated descriptive operators skewness and kurtosis that which provide information in concentrated form about the shape of the phase resolved partial discharge patterns.