Title :
Some observations on artificial cavities in a cross-linked polyethylene
Author :
Garcia, G. ; Mayoux, C.
Author_Institution :
Lab. de Genie Electr., Univ. Paul Sabatier, Toulouse, France
Abstract :
An experimental study of artificial cavities in cross-linked polyethylene (XLPE) was conducted, and results are compared with those for other materials. Discharge evolution vs. time in XLPE cavities (both sealed and open) is reported. An examination of discharge characteristics vs. time shows an abrupt decrease of discharge frequency during the first 30 min; their number reaches a steady state but an extinction is never observed. This behavior is interpreted in terms of an increase in the cavity-wall conductivity or in terms of gas-pressure changes
Keywords :
cable insulation; organic insulating materials; partial discharges; polymers; 30 min; XLPE; artificial cavities; cavity-wall conductivity; closed cavities; cross-linked polyethylene; discharge characteristics; discharge frequency; experimental study; gas-pressure changes; observations; open cavities; sealed cavities; Conducting materials; Conductivity; Dielectrics and electrical insulation; Gas insulation; Magnetic cores; Polyethylene; Pulse measurements; Slabs; Thermal degradation; Transducers;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38426
