Online Gas in Oil Analysis on Existing HV Cables
Reference Number
NIA_NGET0093
Title
Online Gas in Oil Analysis on Existing HV Cables
Status
Completed
Energy Categories
Other Power and Storage Technologies(Electricity transmission and distribution)
Research Types
Applied Research and Development
Science and Technology Fields
PHYSICAL SCIENCES AND MATHEMATICS (Metallurgy and Materials)
ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering)
ENGINEERING AND TECHNOLOGY (Electrical and Electronic 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 May 2013
End Date
01 June 2016
Duration
37 months
Total Grant Value
£380,000
Industrial Sectors
Power
Region
London
Programme
Network Innovation Allowance
Web Site
Objectives
To be able to provide online information on the state of insulation in HV cables installed on the Transmission system. This project will be successful if National Grid can quantitatively monitor HV cable insulation.
Abstract
National Grid has many kilometres of underground HV cable either approaching or exceeding its design life. More information is required to be able to optimise replacement, avoid failures and reduce costs while still managing risk to the Transmission System. There has been little work completed in the area of online monitoring of HV Cables due to the complexity and lack of viability to retro- fit sensors. This is due to oil filled cables being designed to be closed loop, both electrically and hydraulically, for life. The capture of a signal is also complex due to the nature of Transmission cables being longer and having attenuated signals. The problem that National Grid face is that there is no proven methodology for online condition monitoring of HV cable currently available. Development The method proposed involves evaluating new sensors for application on the HV Cable system in the Transmission Network, and developing at least 2 systems that are able to monitor in a remote and harsh location. From there, National Grid are going to investigate the compatibility of the sensors with the existing SAM system. This solution will then provide a means of evaluating cable condition for optimised capital replacement and risk mitigation.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
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Added to Database
14/09/18
