Sep 2015
Electricity Distribution
Solid Cable Replacement Prioritisation
NIA_UKPN0014
Complete
Sep 2015
Feb 2017
UK Power Networks, Eastern Power Networks, London Power Networks and South Eastern Power Networks
Lynne McDonald
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Network Innovation Allowance
None
High Voltage Technology
£141,056.00
This project will carry out analysis on all, 33kV, 66kV and 132kV solid cables within UK Power Networks’ DNOs and create a HI model for all solids cables operating at, 33kV, 66kV and 132kV.

The objective of this project will be to identify solid cable assets operating at 33kV, 66kV and 132kV where it would be cost beneficial to customers to replace, as opposed to carrying out multiple fault repairs. By carrying out this analysis a cost benefit can be proven for the replacement of old cables to ensure best value for customers.

The specific objectives are:

  • Collation of historic faults with asset registers in place (linking to the fault to cable information)
  • Analysis of faults and trends for cables operating at 33kV, 66kV and 132kV, leading to identification of factors that affect the likelihood of failure of solid cables
  • Collation of all sources of information into a model to allow identification of cables at increased risk of fault
  • Output of model to identify cables where replacement would be beneficial to customers
The success of the project will be judged against the four objectives described above:

  • Linking of historic faults with asset registers to produce picture of historic cable faults (reason for fault, type of cable used, type of lay, age, location, etc.) leading to production of a table of historic faults.

  • Identification of factors that affect the likelihood of failure of a solid cable, leading to the production of a short report identifying trends to be considered what planning asset replacement of solid cables.

  • Collation of all asset registers to produce model with sufficient asset data to allow identification of high risk/customer cost beneficial cables.

  • Output of model – identification of cables where it is more beneficial to the customer to replace the cable rather than repair.