Impact of magnetic field on variation of partial discharges parameters in the insulation model with a distributed defect

The paper presents the experimental results of studies into the influence of an alternating magnetic field on the changes in the partial discharges parameters in the model of insulation with a distributed defect. The studies were carried out on a developed experimental setup, isolation model and based on the author's experimental technique. The research confirms the influence of the magnetic field on changes in the amplitude, number of pulses and intensity of partial discharges in practice. The analysis of the obtained data series for the reliability of differences was carried out using mathematical methods. Based on the results of the analysis of the phase-distributed patterns of the occurrence of partial discharges, the repeated appearance of additional discharges in new phase windows under the additional action of an alternating magnetic field was established.