COMPARISON BETWEEN THE DIELECTRIC DATA DERIVED FROM CURRENT AND VOLTAGE TIME DOMAIN MEASUREMENTS

Vladimír Ďurman - Martin Wiesner - Jaroslav Lelák - Ondrej Olach

   In this paper a review is given of different computing procedures for evaluation of the absorption current and recovery voltage measurements in dielectric systems. A new method based on the recovery voltage measurement is also presented and compared with some selected methods used in this field. All selected measuring and computing procedures were applied to the dielectric data measured on a simple circuit consisting of discrete components as well as on real dielectric of PVC cables. It was shown that the new method based on the Fourier transform of recovery voltage data is much faster and less complicated than the method of modelling the transient by means of an equivalent circuit. Possible sources of errors arising from application of the method are discussed in conclusion of the paper.

Keywords: dielectrics, dielectric response, insulation systems

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