Title :
Correlation of surface degradation and charge trapping in XLPE subjected to partial discharges
Author :
Gamex-Garcia, M. ; Bartnikas, R. ; Wertheimer, M.R.
Author_Institution :
Condumex Res. Center, Mexico
Abstract :
Experiments designed to investigate surface degradation of XLPE by corona discharges between circular electrodes are described. Charge injection behavior was also studied by measuring the surface potential Vs, which was found to be radially symmetrical and strongly influenced by the particular conditions of the experiment. Degradation patterns observed for static flowing N2 and O2 atmospheres are reported, and it is shown how they correlate with Vs(r). A complicated interplay of electrostatic charging, gas phase and surface chemistry, and gas dynamics were observed
Keywords :
corona; partial discharges; polymers; N2; O2; XLPE; charge trapping; circular electrodes; corona discharges; electrostatic charging; gas dynamics; gas phase; partial discharges; static flowing; surface chemistry; surface degradation; surface potential; Atmosphere; Charge measurement; Corona; Current measurement; Degradation; Electrodes; Electrostatics; Particle measurements; Surface charging; Surface discharges;
Conference_Titel :
Electrical Insulation, 1988., Conference Record of the 1988 IEEE International Symposium on
Conference_Location :
Cambridge, MA
DOI :
10.1109/ELINSL.1988.13925