PROCESS FOR MEASURING PARTIAL DISCHARGES

摘要

A process for the measuring of partial discharges on a plurality of homogeneous device-under-tests by processing sensed digital TE-pulses as follows: storing a reference frequency spectrum of TE-pulses in a digital computer; transforming in said computer by a Fourier Transform at least one of said digital sensed TE-pulses from the time domain into the frequency range as a sensed frequency spectrum; scaling said sensed spectrum to the amplitude values of the reference spectrum; comparing the scaled spectrum with the reference spectrum; and determining scaled spectrum which are within a defined tolerance range of the reference spectrum. Interference signals can be sensed and compensated mathematically or suppressed so that also a device-under-test TE-pulse with impressed interference signals can be used for the evaluation.