Development of a wide-band measurement system for AC PD pulse current signals part 2: Software platform and its application

In this paper, software platform and its application to develop a novel wide-band (WB) measurement system for ac PD pulse current signals with adjustable sampling rate up to 1 GS/s and bandwidth of 10 kHz ~ 300 MHz are introduced. The software platform was realized based on the Measurement Studio with some designed algorithms and procedures, to display waveforms in time and frequency domains respectively of the detected pulse current sequence (PCS) and its corresponding PRPD pattern, the feature extraction results on 2D parameters plane of the PCS using the equivalent time-frequency method (ETFM), and the grouping or separation results, etc. Application to measure a test of two PD sources and a random pulsed interference in high voltage (HV) laboratory is described, which gives a good grouping and separation result to show practicability and effectiveness of the developed ac PD measurement system.