Title :
Simultaneous measurements of PD in oil using conventional narrow band and ultra wide band detection systems
Author :
Pompili, M. ; Mazzetti, C. ; Bartnikas, R.
Author_Institution :
Dept. of Electr. Eng., Rome Univ., Italy
Abstract :
Partial Discharge (PD) measurements were carried out with conventional narrow band and ultra wide band detector circuits on a transformer oil under ac conditions, employing point-to-plane electrodes having separations from 3.0 to 8.0 mm. The rapid rise time partial discharge events in the oil were readily detected by the conventional narrow band measuring system in the form of a single integrated apparent charge pulse. This pulse represented generally the single response to a PD pulse burst involving a number of pulses in the oil. The apparent charge values of the integrated pulse were found to range from approximately 10 to 16 pC, representing the lower range of PD apparent charge values normally encountered in oil-filled electrical apparatus when conventional narrow band PD measuring circuits are employed
Keywords :
dielectric measurement; partial discharges; transformer oil; integrated apparent charge pulse; narrow band detection system; partial discharge measurements; point-to-plane electrodes; transformer oil; ultra wide band detection system; Charge measurement; Current measurement; Integrated circuit measurements; Narrowband; Partial discharge measurement; Partial discharges; Petroleum; Pulse measurements; Pulse transformers; Ultra wideband technology;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids, 1996, ICDL '96., 12th International Conference on
Conference_Location :
Roma
Print_ISBN :
0-7803-3560-0
DOI :
10.1109/ICDL.1996.565411
