28 September 2016 The influence of moisture on the activation energy of the conductivity of paper-oil insulation of power transformers
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Proceedings Volume 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016; 100312B (2016) https://doi.org/10.1117/12.2249278
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, 2016, Wilga, Poland
Abstract
In the paper presents the influence of moisture content and electric field intensity on the activation energy of the conductivity DC electrical pressboard impregnated with insulating oil in the measuring temperature range of from 20 °C to 80 °C and the electric field intensity range from 10 kV/m to 1000 kV/m. With Arrhenius plots for each of the moisture content and for all seven of the electric field intensity was determined coefficients of determination R2, which are very close to one. This proves the high accuracy of approximation linear experimental results on the Arrhenius plots and highly accurate measurements of conductivity, accurate stabilization and measurements temperature. It was found that the moisture content of range from 1.15% to 6.5% wt. and the electric field intensity does not affect (in the margin of error) on the activation energy value of the DC conductivity, which is (1.0338 ± 0.02000) eV.
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Konrad Kierczyński, "The influence of moisture on the activation energy of the conductivity of paper-oil insulation of power transformers", Proc. SPIE 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, 100312B (28 September 2016); doi: 10.1117/12.2249278; https://doi.org/10.1117/12.2249278
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