Estimation Method Of Polyethylene Power Cable Insulation Subjected To Electric Field In The Presence Of Water
An approach to estimate the polyethylene power cable insulation of Medium Voltage cable system is presented.
It is shown that many factors affect the speed of degradation of a Medium Voltage cable system and that the degradation
mechanisms vary between different types of cables and accessories. It is also pointed out that various analytical methods
exist to determine the extent of ageing. During service, underground power cables are subjected to degradations due to the
growth of water trees. Therefore, their lifetime is reduced. In this paper, estimation method for low density polyethylene
insulated underground cables subjected to electrical fields in the presence of water are presented. The method is based on
laboratory accelerated ageing tests using high fields.