An Analysis of AC Conductivity in Moist Oil-impregnated Insulation Pressboard

被引：47

作者：

Zukowski, Pawel ^{[1
]}

Koltunowicz, Tomasz N. ^{[1
]}

Kierczynski, Konrad ^{[1
]}

Subocz, Jan ^{[2
]}

Szrot, Marek ^{[3
]}

Gutten, Miroslav ^{[4
]}

Sebok, Milan ^{[4
]}

Jurcik, Jozef ^{[4
]}

机构：

[1] Lublin Univ Technol, Dept Elect Devices & HV Technol, PL-20618 Lublin, Poland

[2] West Pomeranian Univ Technol, Dept Electrotechnol & Diagnost, PL-70313 Szczecin, Poland

[3] Power Engn Res Ctr Ltd, PL-41949 Piekary Slaskie, Poland

[4] Univ Zilina, Dept Measurement & Appl Elect Engn, Zilina 01026, Slovakia

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2015年 / 22卷 / 04期

关键词：

Electrical insulation pressboard; hopping exchange of electrons; moisture content; conductivity; potential wells; reference temperature; AGED TRANSFORMERS; FREQUENCY-DOMAIN; POLARIZATION; ABSORPTION; DISPERSION; TIME;

D O I：

10.1109/TDEI.2015.004606

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The paper presents research results of testing AC conductivity in a moist oil-impregnated electric insulation pressboard, depending on the moisture content level and temperature of the samples. A new method has been elaborated for converting experimentally obtained dependences from frequency-domain spectroscopy (FDS) to the reference temperature of 293 K (20 degrees C). Activation energy values have been determined for the conduction and relaxation time. It has been found the conductivity is realized by electron tunnelling between potential well formed by water molecules contained in the structure of moist cellulose.

引用

页码：2156 / 2164

页数：9

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