High voltage magnitude measurement from corona sound by using neural network

This study presents measuring the magnitude of voltage applied on a HV line without any physical contact with the line by neural network using corona sound data as input of the network. Corona sound data used in this study are acquired from an experimental set-up when applying 50 Hz AC high voltage at different levels to the line conductor. Recorded sound data of corona and the voltage magnitudes are applied to a neural network (NN). To analyze corona sound, linear prediction coefficients are used. It is shown from the results that the proposed method can be used for the measuring voltage magnitude.