Study of Power Transformer Insulation Model. The X-Y Model of Oil Impregnated Pressboard - Water Nanodrops - Insulating Oil Composite

Abstract

The paper presents a measuring stand enabling measurements with the use of the Frequency Domain Spectroscopy method. The process of making a measuring sample consistent with the X-Y model of a power transformer is discussed. The results of measurements of alternating current electrical parameters such as: admittance, phase shift angle, conductivity, permittivity, loss angle tangent, power loss coefficient are presented. Exemplary measurements were made for the temperatures of 293.15 K, 301.15 K, 309.15 K, 317.15 K, 325.15 K and 333.15 K in the frequency range from 0.1 mHz to 5 KHz.