Abstract
A 2-channel data acquisition and processing system (DAPS) for partial discharges (PD) using a fast (20 MSa/sec) digitizer has been developed which can acquire up to 16 MSa per channel, and simultaneously measure the phase '/spl phi/' and 'q' of PDs occurring on a given power line voltage and represent on a 3D plot of n(q,/spl phi/). This system has been tested using artificially generated PD pulses and experimental data. The resolution of this DAPS system is 50 mV in voltage and 1/spl deg/ in phase. A statistical package has been added to the processing of the data so that a distribution identification test of the PD pulse heights can be performed. In this process, the first four moments of the experimental pulse height distribution are obtained and from these moments, two parameters /spl beta//sub 1/ and /spl beta//sub 2/ are calculated. These parameters are used to identify the underlying distribution.
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