ThermoMechanical Forces in XLPE Cable
Reference Number
NIA_NGET0036
Title
ThermoMechanical Forces in XLPE Cable
Status
Completed
Energy Categories
Other Power and Storage Technologies(Electricity transmission and distribution)
Research Types
Applied Research and Development
Science and Technology Fields
ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering)
ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering)
ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering)
UKERC Cross Cutting Characterisation
Not Cross-cutting
Principal Investigator
Project Contact
National Grid Electricity Transmission
National Grid Electricity Transmission
Award Type
Network Innovation Allowance
Funding Source
Ofgem
Start Date
01 July 2012
End Date
01 January 2016
Duration
42 months
Total Grant Value
£280,000
Industrial Sectors
Power
Region
London
Programme
Network Innovation Allowance
Web Site
Objectives
Research The objective of this project is to be able to provide assurance to National Grid, that cables that experience a higher loading, and therefore run hotter (up to 105 degrees) due to increased loading will not experience any unknown or unexpected mechanical effects and therefore will not have shortened life expectancy or unexpected failures. This project will be successful if the cables are modelled successfully at operating temperatures agreed with the suppliers. A further success would be if National Grid could implement an increased ratings recommendation based upon this work (this would need to be complemented by other work). This project will therefore be successful if we increase our level of knowledge on the behavioural aspects of heated cables.
Abstract
National Grid has a problem understanding the magnitude of thermo-mechanical effects of large cross-section cross linked polyethylene (XLPE) cables. This problem leads to particular difficulties in designing the steel support work where cables meet gas insulated substation (GIS) and air insulated substation (AIS) terminations. It is currently suspected that they are over engineered. Through testing of cable samples in differing conditions, we will be able to create a model that allows us to have an increased understanding of the Thermomechanical forces in XLPE cable systems. We will be researching methods of calculating / measuring the thermo-mechanical forces imposed when a cable is in service, and possible methods of eliminating them. This will be achieved by physical testing and the use of Finite Element Analysis.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
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Added to Database
17/12/18
