DocumentCode :
1537388
Title :
Sensitivity comparison of disc- and loop-type sensors using the UHF method to detect partial discharges in GIS
Author :
Hoshino, Takashi ; Maruyama, Shoichi ; Ohtsuka, Shigeki ; Hikita, Masayuki ; Wada, Junichi ; Okabe, Shigemitsu
Author_Institution :
Toshiba Corp., Kawasaki, Japan
Volume :
19
Issue :
3
fYear :
2012
fDate :
6/1/2012 12:00:00 AM
Firstpage :
910
Lastpage :
916
Abstract :
This paper investigates the sensitivity of two UHF sensors of a disc-type measuring electrode and a loop-type measuring electrode embedded in an epoxy insulator for detecting partial discharges (PD) and for diagnosing gas-insulated switchgear (GIS). The experimental results show that the disc-type electrode has a wide frequency range up to 8 (GHz), which is advantageous for detecting a particle on an enclosure. The results also show that the loop-type measuring electrode is more sensitive to a metallic particle on a conductor than the disc-type measuring electrode. These results confirm that both disc-type and loop-type measuring electrode are capable of detecting frequency components in the UHF range or in a higher frequency band up to 8 (GHz) when the different types of defect exist inside a GIS.
Keywords :
epoxy insulators; gas insulated switchgear; partial discharge measurement; sensors; UHF sensors; disc-type measuring electrode; disc-type sensors; epoxy insulator; frequency 8 GHz; gas-insulated switchgear; loop-type measuring electrode; loop-type sensors; partial discharge detection; Atmospheric measurements; Electrodes; Electromagnetic scattering; Partial discharges; Particle measurements; Sensors; UHF measurements; Disc-type and loop-type measuring electrodes; UHF method; gas-insulated; partial discharge; switchgear;
fLanguage :
English
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher :
ieee
ISSN :
1070-9878
Type :
jour
DOI :
10.1109/TDEI.2012.6215094
Filename :
6215094
Link To Document :
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