Title :
Investigation of PD pulse propagation characteristics in GIS
Author :
Mizuno, K. ; Ogawa, A. ; Nojima, K. ; Murase, H. ; Koyama, H. ; Wakabayashi, S. ; Sakakibara, T.
Author_Institution :
Chuba Electr. Power Co. Inc., Nagoya, Japan
Abstract :
Concentrating on the TEM mode, damping characteristics of partial discharge (PD) pulses propagating through each GIS (gas insulated substation) component were investigated, as a result, it was discovered that frequency components above 500 MHz were damped by spacers, T-shape branches, and L-bends. Quantitative studies were undertaken on the frequency dependency of this damping characteristics. Then the equivalent circuits for analyzing the propagation characteristic of PD pulses were proposed. Furthermore, the validity of concentrating on the TEM mode was denoted by tests at a substation in service
Keywords :
charge measurement; damping; equivalent circuits; gas insulated substations; partial discharges; power system measurement; GIS; L-bends; PD pulse propagation characteristics; T-shape branches; TEM mode; equivalent circuits; frequency components; frequency dependency; gas insulated substation; partial discharge pulses propagation; spacers; Circuit analysis; Circuit testing; Damping; Equivalent circuits; Frequency; Gas insulation; Geographic Information Systems; Partial discharges; Pulse circuits; Substations;
Conference_Titel :
Transmission and Distribution Conference, 1996. Proceedings., 1996 IEEE
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-3522-8
DOI :
10.1109/TDC.1996.545936
