Title :
Influence of internal stress and strain on electrical treeing in XLPE
Author :
David, E. ; Parpal, J.-L. ; Crine, J.-P.
Author_Institution :
Inst. de Recherche, Hydro-Quebec, Varennes, Que., Canada
Abstract :
It is generally accepted that mechanical strains and stresses have a significant influence on the electrical performance of polymeric materials. The aim of this investigation is to quantify the residual stresses created around embedded needles in XLPE pin-plane specimens for quenched and slowly cooled samples. The paper also examines the effect of these highly divergent mechanical stress fields on the time-to-inception of electrical trees
Keywords :
trees (electrical); XLPE; electrical performance; electrical treeing; embedded needles; high-voltage cable insulation; mechanical strain; mechanical stress; pin-plane specimens; polymeric materials; quenched samples; residual stresses; slowly cooled samples; time-to-inception; Cable insulation; Capacitive sensors; Conducting materials; Cooling; Electrodes; Internal stresses; Needles; Residual stresses; Thermal stresses; Trees - insulation;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1994., IEEE 1994 Annual Report., Conference on
Conference_Location :
Arlington, TX
Print_ISBN :
0-7803-1950-8
DOI :
10.1109/CEIDP.1994.592032
