The moisture effect on dielectric losses of insulating paper

Author

Bitam-Megherbi, F. ; Osmani, S. ; Megherbi, M.

Author_Institution

Lab. of Mater., Electrochem. & Corrosion, Mouloud Mammeri Univ., Tizi-Ouzou, Algeria

Volume

1

fYear

2004

Firstpage

443

Abstract

The present work concerns the moisture effect on electrical features of insulating paper. Despite the progressive replacement of paper by different materials, several blocks and other insulating screens in transformers contain cellulose which is characterized by a very high hygroscopicity. These cellulosic products appear as a source of moisture. This moisture can lead to a serious damage in the electrical equipments. The aim of this work was also to focus our attention on examination of dielectric losses evolution with the moisture level. For a better understanding of phenomena, we have separately examined the moisture influence on both conductivity and permittivity of the paper.

Keywords

dielectric losses; electrical conductivity; moisture; paper; permittivity; transformers; cellulose; cellulosic products; conductivity; dielectric losses; electrical equipments; electrical features; hygroscopicity; insulating paper; moisture effect; permittivity; transformers; Conductivity; Dielectric loss measurement; Dielectric losses; Dielectric materials; Dielectrics and electrical insulation; Moisture; Optical polarization; Oscilloscopes; Permittivity; Power transformer insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics, 2004. ICSD 2004. Proceedings of the 2004 IEEE International Conference on

Print_ISBN

0-7803-8348-6

Type

conf

DOI

10.1109/ICSD.2004.1350386

Filename

1350386