6533b834fe1ef96bd129e31a
RESEARCH PRODUCT
A new technique for partial discharges measurement under DC periodic stress
G. PrestiPietro RomanoA. ImburgiaFabio ViolaRoberto CandelaE. Riva Sanseverinosubject
010302 applied physicsVoid (astronomy)Materials scienceHVDCElectronic Optical and Magnetic MaterialConductanceStress measurementMechanicsDC stre01 natural sciencesSpace chargeSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaPartial discharge0103 physical sciencesWaveformConstant voltagePRPD patternElectrical and Electronic Engineering010306 general physicsdescription
The aim of the present work is to recognize the type of defect in insulating materials employed in DC electrical systems. This analysis, under AC stress, is carried out by using the Phase Resolved method (PRPD). While, under constant voltage stress this method cannot be performed and measurements show complexities. In order to overcome these problems, a new technique is proposed, based on the application of a periodic continuous waveform. Simulation results, carried out by using a model based on a time-variable conductance of an air void defect, showed the PRPD pattern that can be obtain. Furthermore, compared to the constant DC stress, the measurement duration became lower and the discharges repetition rate greater. Finally, experimental tests have been made in order to validate simulation results.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-01 |