Sensitivity of UHF coupler and loop electrode with UHF method and their comparison for detecting partial discharge in GIS

Author

Hoshino, T. ; Maruyama, S. ; Sakakibara, T. ; Ohtsuka, S. ; Hikita, M. ; Ueta, G. ; Okabe, S.

Author_Institution

Toshiba Corp., Kawasaki

fYear

2008

fDate

21-24 April 2008

Firstpage

348

Lastpage

351

Abstract

We introduce in this paper the sensitivity of two UHF couplers, disc-type measuring electrode and loop-type measuring electrode embedded in an epoxy insulator, for detecting partial discharge (PD) and diagnosing GIS. Each of the couplers has sufficient performance for detecting the electromagnetic waves up to 8 GHz. The attenuation characteristic of electromagnetic waves is changed depending upon the location of defects, such as a particle on an enclosure or on a conductor.

Keywords

UHF couplers; electrodes; electromagnetic waves; epoxy insulation; fault diagnosis; gas insulated switchgear; partial discharge measurement; GIS; UHF coupler; attenuation characteristic; conductor; electromagnetic waves; enclosure; loop electrode; partial discharge; Attenuation; Electrodes; Electromagnetic coupling; Electromagnetic measurements; Electromagnetic scattering; Geographic Information Systems; Insulation; Partial discharge measurement; Partial discharges; UHF measurements; Disc-type & Loop-type measuring electrodes; Gas-Insulated Switchgear; Partial discharge; UHF Method;

fLanguage

English

Publisher

ieee

Conference_Titel

Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-1621-9

Electronic_ISBN

978-1-4244-1622-6

Type

conf

DOI

10.1109/CMD.2008.4580299

Filename

4580299