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Projects: Projects for Investigator
Reference Number NIA2_NGET0029
Title Silicone Oil Markers Investigation (SOMI)
Status Started
Energy Categories Other Power and Storage Technologies(Electricity transmission and distribution) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
National Grid Electricity Transmission
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 July 2023
End Date 31 January 2026
Duration ENA months
Total Grant Value £332,000
Industrial Sectors Power
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , National Grid Electricity Transmission (100.000%)
  Industrial Collaborator Project Contact , National Grid Electricity Transmission (0.000%)
Web Site https://smarter.energynetworks.org/projects/NIA2_NGET0029
Objectives "A Technology have recently carried out studies and have discovered potential new markers left in silicone oil attributed to early onset of Partial Discharge activity. These markers are produced in accordance with the delivered energy and frequency of discharge and are not of hydrocarbon type. This project proposes to firstly validate these potential new markers through long-term experiments and then to develop a diagnostic system to offer a maintenance and diagnostic guidance for silicone oil filled assets in general. This would include investigations into the followings. Inception: At what energy level do the individual markers first appearPropagation: What is the concentration response versus energy increase? Can the degree of damage caused be ascertained and quantified?Discrimination: Differentiation between different modes of failureTerminal: At what energy level, or marker concentration is likely to produce a catastrophic resultThermal faults: It is already established that temperature and humidity result in a jellification of the silicone oil. This strongly implies cross linking. In this project it is aimed to study the relationship of degree of cross linking with temperature With the investigations above, this project would seek to produce a set of procedures and metrics that would eventually allow accurate estimation of the remaining lives of silicone oil filled assets. This project would also investigate the integration of online analysers to such assets so that real time condition monitoring could be implemented and the need for oil sampling, which is often difficult to arrange due to outage requirement, could be negated. " "The scope of work includes the followings. Long term experiment on silicone oils under inert atmosphere and in presence of interfering materialsLong term experiment on silicone oils under oxidative conditionsLong term experiment on silicone oils under water saturated air atmosphereLong term experiment and study of the impacts caused by water streamersLong term experiment on silicone oils under various thermal conditionsVarious reporting and quantification of experimental resultsVarious reporting on PD results from different experimentsQuantification on PD from different influencesOnline analyser integration investigationReporting of overall learning and application of learningCapability roadmap production and summary reportingDissemination of learning " "The objectives of this project include: Validation of the new PD makers for silicone oils through long-term experimentsTo identify the onset, propagation and development of PD in silicone oilsTo produce a diagnostic system based on the validated new markers. This system would:Inform maintenance activities to prolong asset lifeProvide estimation for remaining asset lifeTo investigate the integration of online analysers with silicone oil filled assets to mitigate the need for network outage for oil sampling "
Abstract This project aims to employ long-term experiments to validate the new potential markers for silicone oils, which could denote the onsets of asset failure and thus allow corrective actions. The experimental results will be collated, cross-referenced and quantified to produce new diagnostic methods and maintenance approaches for silicone oil filled network assets. Based on these new diagnostics and approaches, this project would recommend the best practices to prolong asset lives and to carry out asset maintenance. This project would also investigate the feasibility of online analyser integration to mitigate the need for silicone oil sampling, which requires network outages. This project also aims to produce effective and reliable estimation methods for remaining asset life to inform asset replacement strategies.
Publications (none)
Final Report (none)
Added to Database 01/11/23