A line for gas insulation a detection and location of an internal arc for oscillation in a half - wavelength of a dielectric gas contained in the metallic envelope of the line

摘要

An electric line consists of a conductor (1) supported by epoxy resin spacers (5) within a metallic and cylindrical envelope (3) which contains a dielectric gas (7). A sensor (11) is placed at one end of the line and detects the instantaneous amplitude of the stationary oscillation produced by any internal arc. The signal (17) is processed (15) by Fourier transform to produce the amplitude of the resonant oscillation