Development of advanced technology for high voltage transformer winding condition control based on probing impulse of nanosecond duration

Abstract

The paper deals with the experimental research of the pulsed method of transformer winding control in comparison with FRA technology. A new approach to winding condition control technology is described. The proposed method is based on short (compared with a typical pulsed technology) probe pulse and front pulse durations. The experimental results of sensitivity growth at decreasing front pulse duration are shown. The experimental equipment and measurements are described. A comparison of the experimental results of the proposed technology and FRA is given. It is shown that shorter front of probe pulse duration allows upgrading sensitivity of the diagnostic procedure.