Device for locating partial discharges in gas-insulated switching installations in the time domain

摘要

Device for locating partial discharges in gas-insulated switching installations in the time domain with at least two the power of the signal of the electromagnetic waves caused by a partial discharge detection and at a distance from each other arranged sensors (s1, s2), characterized in that the sensors (s1, s2) in each case via a device (1a, 1b) for carrying out for signal conditioning and a power detector (2a, 2b) with a threshold value measuring device (3a, 3b) are connected together, whereby, caused by a specific change in power, in each case of digital signals at the output of the threshold value measuring devices (3a, 3b), that the threshold value measuring devices (3a, 3b) with a the time difference of the digital signals of the threshold value measuring devices (3a, 3b) be determined and digitally operating correlator (4) are connected and that of the correlator (4) with a from the relative frequency of the time differences of the approximately transit time difference and therefrom the position of the partial discharge between the sensors (s1, s2) which determines the height of the data processing device (5) is interconnected.