Title :
Comparison of sensitivity between UHF method and IEC 60270 for onsite calibration in various GIS
Author :
Hoshino, Toshihiro ; Koyama, Hiroshi ; Maruyama, Shiro ; Hanai, Masahiro
Author_Institution :
Toshiba Corp., Kanagawa
Abstract :
It is more important to obtain the sensitivity line, which is defined as a correlation between the ultra-high-frequency (UHF) signal (mV) and apparent charge (pC), for onsite calibration regarding partial discharge (PD). Synchronous measurement of the UHF method and IEC 60270 enables us to obtain the sensitivity line and to estimate the apparent charge in on-site substations. The sensitivity line of 3-phase gas-insulated switchgear (GIS) is compared to that of single-phase GIS, and differences in defects are also discussed. The fundamental data in this paper contribute to on-site insulation diagnosis of GIS
Keywords :
calibration; gas insulated switchgear; partial discharges; GIS; IEC 60270; UHF method; apparent charge; gas-insulated switchgear; onsite calibration; onsite substations; partial discharge; synchronous measurement; ultrahigh frequency signal; Calibration; Charge measurement; Current measurement; Geographic Information Systems; IEC standards; Partial discharge measurement; Partial discharges; Substations; Switchgear; UHF measurements; Calibration; IEC 60270; gas-insulated switchgear (GIS); insulation diagnosis; partial discharge; ultra-high-frequency (UHF) method;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2006.874655
