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

Research output: Contribution to conferencePaper


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.
Original languageEnglish
Number of pages6
Publication statusPublished - Jun 2015



  • failure
  • operational conditions
  • ageing
  • Poisson process

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