Title :
Investigation of partial discharge pulse shapes occurring at interfaces in model joints
Author :
Nadolny, Z. ; Braun, J.M. ; Densley, R.J.
Author_Institution :
Ontario Hydro, Toronto, Ont., Canada
Abstract :
The understanding of degradation processes in transmission-class cable joints is very important to the reliability of the operating system. Degradation caused by partial discharges (PD) and their associated characteristics were investigated in model “pre-fabricated” cable joints. Time to breakdown and PD pulse parameters such as rise time, width, fall time, amplitude and frequency were studied. The paper further describes PD pulse parameters occurring within different part of cable joints, such as within the epoxy casting near the high voltage electrode and along the EPR-epoxy interfaces
Keywords :
cable jointing; electric breakdown; epoxy insulation; ethylene-propylene rubber; interface phenomena; partial discharges; power cable insulation; pulse measurement; EPR-epoxy interfaces; EPR/XLPE interfaces; PD pulse parameters; degradation processes; epoxy casting; fall time; high voltage electrode; interfaces; model joints; operating system reliability; partial discharge pulse shapes; pre-fabricated cable joints; pulse amplitude; pulse frequency; pulse width; rise time; time to breakdown; transmission-class cable joints; Casting; Degradation; Electric breakdown; Frequency; Operating systems; Partial discharges; Pulse shaping methods; Shape; Space vector pulse width modulation; Voltage;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on
Conference_Location :
Vasteras
Print_ISBN :
0-7803-4237-2
DOI :
10.1109/ICSD.1998.709240
