Prediction of power cable failure rate based on failure history and operational conditions

Research output: Contribution to conferencePaper

Published

View graph of relations

Original languageEnglish
Pages1-6
Number of pages6
StatePublished - Jun 2015

Conference

ConferenceJicable 2015
CountryFrance
CityVersailles
Dates21/06/1525/06/15

Abstract

In this paper, the failure causes of cables are classified
into two types, random and ageing. The piece wise power law
non-homogeneous Poisson process and stochastic
electro-thermal model is proposed to predict the total
annual and ageing failures, respectively, and the
amalgamation of the two models is used to estimate the
random failures. The proposed methodology is
successfully applied to real data of vintage unjacketed
XLPE cables. The result shows that these cables have
average 39 years of ageing life. However, failure of these
cables is dominated by random failure which cause many
of these cables to fail earlier in their life.

Keywords

  • failure, operational conditions, ageing, Poisson process