Dielectric frequency response of oil-paper composite insulation modified by nanoparticles

Author

Liu, Jun ; Zhou, Lijun ; Wu, Guangning ; Zhao, Yingfeng ; Liu, Ping ; Peng, Qian

Author_Institution

Coll. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China

Volume

19

Issue

2

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

510

Lastpage

520

Abstract

The research on dielectric frequency response of oil-paper composite insulation modified by nanoparticles has been carried out in order to seek possible way to improve insulation properties thereof. Before and after nanoparticles being added, the dielectric frequency responses of oil-paper composite insulation with different moisture contents at different temperatures have been measured within the frequency from 0.1 mHz to 1 MHz. The Cole-Cole relaxation model has been used to analyzing the measured data. The results show that the variation rules of insulation condition can be indicated by the parameters of relaxation model. By adding nanoparticles, a new low frequency relaxation appeared.

Keywords

composite insulators; nanoparticles; paper; power transformer insulation; transformer oil; Cole-Cole relaxation model; dielectric frequency response; frequency 0.1 mHz to 1 MHz; frequency relaxation; moisture content; nanoparticle; oil-paper composite insulation; Dielectrics; Frequency measurement; Insulation; Moisture; Nanoparticles; Permittivity; Permittivity measurement; Cole-Cole model; Dielectric frequency response; complex dielectric coefficient; nanoparticles modification; oil-paper composite insulation;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2012.6180245

Filename

6180245