Title :
Influence of continuous thermal ageing on the properties of XLPE used in medium voltage cables
Author :
Boubakeur, A. ; Mecheri, Y. ; Boumerzoug, M.
Author_Institution :
Ecole Nat. Polytech., El-Harrach, Algeria
fDate :
6/21/1905 12:00:00 AM
Abstract :
This paper covers investigation results on electrical and mechanical properties of crosslinked polyethylene (XLPE), used as electrical insulation of medium voltage power cables, under thermal ageing stress. The authors have carried out continuous accelerated thermal ageing of cables at four levels of temperatures ranging from 80°C to 140°C on 18/30 kV cable samples. The measurements include threshold voltage of partial discharges, dielectric loss factor and relative permittivity as a function of ageing time. The mechanical properties are measured before and after the ageing tests. The obtained results show that thermal ageing significantly affects the properties of XLPE
Keywords :
XLPE insulation; 18 kV; 30 kV; 80 to 140 C; PD threshold voltage; XLPE MV power cable insulation; accelerated thermal ageing; ageing time; continuous thermal ageing; crosslinked polyethylene; dielectric loss factor; electrical properties; insulation breakdown testing; mechanical properties; partial discharges; relative permittivity;
Conference_Titel :
High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)
Conference_Location :
London
Print_ISBN :
0-85296-719-5
DOI :
10.1049/cp:19990836
