Title :
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
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;
Conference_Titel :
Solid Dielectrics, 2004. ICSD 2004. Proceedings of the 2004 IEEE International Conference on
Print_ISBN :
0-7803-8348-6
DOI :
10.1109/ICSD.2004.1350386
