Preliminary partial discharge measurements with a computer aided partial discharge detection system

Partial discharges (PDs) can be destructive to electrical insulation as they may degrade the material in time. Consequently, studies have been made to develop efficient systems for PD measurements and monitoring. Due to the complexity of PDs as well as factors that can affect PD characteristics, the research on PD measurement is still active. In this study a set off preliminary laboratory measurements of discharges, produced in laboratory environment with various test objects, were performed to evaluate understanding of the theory related to partial discharge and the relationship to early detection of insulation deterioration. Beside these, the common problems with recent computer aided partial discharge detection systems were tried to be identified such as detect level selection, exact PD inception voltage (PDIV) and PD extinction voltage (PDEV).