Title :
Results of Partial Discharge Measurements in a Long-Distance 275 kV GIL
Author :
Miyazaki, A. ; Takinami, N. ; Kobayashi, S. ; Araki, Takeshi ; Nishima, H. ; Hata, Hiroki ; Yamaguchi, Hitoshi ; Yamauchi, Takashi ; Hama, Hiromitsu
Author_Institution :
Chubu Electric Power Company, Inc., Nagoya, Japan; Sumitomo Electric Industries, Ltd., Osaka, Japan; Furukawa Electric Company, Ltd., Chiba, Japan; Mitsubishi Electric Corporation, Amagasaki, Japan
Abstract :
In this paper we introduce a newly developed measuring system for partial discharges (PD) in after-laying tests on site for a long-distance gas insulated transmission line (GIL) in a tunnel. We evaluate the length of harmful particles for the overvoltages to be considered for the Shinmeika-Tokai GIL. The length ofparticles detectable by the PD sensors is compared with the length of harmful particles. The highly sensitive PD measuring system took advantage of low noise levels in the tunnel. We applied the system to the after-laying test on site and confirmed that the developed system was effective to verify the required performance of a long distance GIL in a tunnel.
Keywords :
Contracts; Costs; Gas insulated transmission lines; Partial discharge measurement; Partial discharges; Portfolios; Power system economics; Power system modeling; System testing; Transmission line measurements; Gas insulated transmission line; after-laying test; measuring system; metallic particles; partial discharges;
Journal_Title :
Power Engineering Review, IEEE
DOI :
10.1109/MPER.2002.4311739
