Characterization of Ion Transport Properties in Synthetic Ester Oil by Polarization Current and Dielectric Spectroscopy

Andrea Cremasco; Emmanuel Logakis; Mitrofan Curti; Elena A. Lomonova

doi:10.5324/nordis.v27i1.4724

Characterization of Ion Transport Properties in Synthetic Ester Oil by Polarization Current and Dielectric Spectroscopy

Andrea Cremasco, Emmanuel Logakis, Mitrofan Curti, Elena A. Lomonova

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Abstract

The accurate estimation of the charge carrier mobility in synthetic ester oil-based insulation systems is required for the reliable prediction of the electric field induced by dc voltages. Some discordance is observed in the literature, therefore, this quantity is investigated by two alternative methods. First, the mobility is estimated in a material sample by measuring the polarization current and the ion time-of- ight during a voltage polarity reversal test. Next, the mobility is derived from the frequency-dependent loss tangent measured by dielectric spectroscopy. The values obtained by the two methods are consistent, in the range of ≈ 2-4·10^-10 [m2/Vs] at 303 K.

Original language	English
Article number	4724
Number of pages	4
Journal	Proceedings of the Nordic Insulation Symposium
Volume	27
Issue number	1
DOIs	https://doi.org/10.5324/nordis.v27i1.4724
Publication status	Published - 5 Jul 2022
Event	27th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 22 - Trondheim, Norway Duration: 13 Jun 2022 → 15 Jun 2022 Conference number: 27 https://www.ntnu.edu/nordis21

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title = "Characterization of Ion Transport Properties in Synthetic Ester Oil by Polarization Current and Dielectric Spectroscopy",

abstract = "The accurate estimation of the charge carrier mobility in synthetic ester oil-based insulation systems is required for the reliable prediction of the electric field induced by dc voltages. Some discordance is observed in the literature, therefore, this quantity is investigated by two alternative methods. First, the mobility is estimated in a material sample by measuring the polarization current and the ion time-of- ight during a voltage polarity reversal test. Next, the mobility is derived from the frequency-dependent loss tangent measured by dielectric spectroscopy. The values obtained by the two methods are consistent, in the range of ≈ 2-4·10\textasciicircum{}-10 [m2/Vs] at 303 K.",

author = "Andrea Cremasco and Emmanuel Logakis and Mitrofan Curti and Lomonova, \{Elena A.\}",

year = "2022",

month = jul,

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doi = "10.5324/nordis.v27i1.4724",

language = "English",

volume = "27",

journal = "Proceedings of the Nordic Insulation Symposium",

publisher = "NTNU Trondheim",

number = "1",

note = "27th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 22, NORD-IS 22 ; Conference date: 13-06-2022 Through 15-06-2022",

url = "https://www.ntnu.edu/nordis21",

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TY - JOUR

T1 - Characterization of Ion Transport Properties in Synthetic Ester Oil by Polarization Current and Dielectric Spectroscopy

AU - Cremasco, Andrea

AU - Logakis, Emmanuel

AU - Curti, Mitrofan

AU - Lomonova, Elena A.

N1 - Conference code: 27

PY - 2022/7/5

Y1 - 2022/7/5

N2 - The accurate estimation of the charge carrier mobility in synthetic ester oil-based insulation systems is required for the reliable prediction of the electric field induced by dc voltages. Some discordance is observed in the literature, therefore, this quantity is investigated by two alternative methods. First, the mobility is estimated in a material sample by measuring the polarization current and the ion time-of- ight during a voltage polarity reversal test. Next, the mobility is derived from the frequency-dependent loss tangent measured by dielectric spectroscopy. The values obtained by the two methods are consistent, in the range of ≈ 2-4·10^-10 [m2/Vs] at 303 K.

AB - The accurate estimation of the charge carrier mobility in synthetic ester oil-based insulation systems is required for the reliable prediction of the electric field induced by dc voltages. Some discordance is observed in the literature, therefore, this quantity is investigated by two alternative methods. First, the mobility is estimated in a material sample by measuring the polarization current and the ion time-of- ight during a voltage polarity reversal test. Next, the mobility is derived from the frequency-dependent loss tangent measured by dielectric spectroscopy. The values obtained by the two methods are consistent, in the range of ≈ 2-4·10^-10 [m2/Vs] at 303 K.

U2 - 10.5324/nordis.v27i1.4724

DO - 10.5324/nordis.v27i1.4724

M3 - Conference article

VL - 27

JO - Proceedings of the Nordic Insulation Symposium

JF - Proceedings of the Nordic Insulation Symposium

IS - 1

M1 - 4724

T2 - 27th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 22

Y2 - 13 June 2022 through 15 June 2022

ER -

Characterization of Ion Transport Properties in Synthetic Ester Oil by Polarization Current and Dielectric Spectroscopy

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