CALCULATION OF THE DIELECTRIC EQUIVALENT CIRCUIT PARAMETERS FROM RECOVERY VOLTAGE MEASUREMENTS

Vladimír Ďurman - Ondrej Olach

   The paper deals with a method for computing frequency characteristics of insulation systems from the recovery voltage measurements. The method is based on modelling the system by means of an equivalent circuit consisting of a parallel combination of RC elements. An algorithm is presented for computation of the individual RC elements and dissipation factor. The proposed algorithm was applied to the values of recovery voltage for various types of insulation systems. The results obtained by means of the proposed algorithm were compared with the results calculated from the absorption current measurements. Good agreement was achieved between the two computational methods.

Keywords: dielectrics, dielectric response, insulation systems

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