To a Method of Polarization-Depolarization Currents for Diagnosis of Dielectric Isolation


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Fractional derivative formalism is proposed as the mathematical foundation of the polarization-depolarization current method for the diagnosis of dielectric isolation. Physical basis of the new approach is the observed deviation of the long-term relaxation from the Debye exponential law. We found that this behavior is consistent with the solution of the fractional differential equation: exponential behavior turns into the power dependence in the long-time asymptotics, and this part of the relaxation curve is more sensitive to the material state. The results of calculations for the polarization-depolarization currents in an oil-paper capacitor are in agreement with the specially performed experiments.

Sobre autores

S. Ambrozevich

Lebedev Physical Institute of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: s.ambrozevich@mail.ru
Rússia, Moscow

R. Sibatov

Ulyanovsk State University

Autor responsável pela correspondência
Email: ren_sib@bk.ru
Rússia, Ulyanovsk

D. Uchaikin

Ulyanovsk State University

Autor responsável pela correspondência
Email: uchaikin@gmail.com
Rússia, Ulyanovsk

E. Morozova

Ulyanovsk State University

Autor responsável pela correspondência
Email: kat-valezhanina@yandex.ru
Rússia, Ulyanovsk

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