Sep 2015
Electricity Transmission
Transformer Rating Modelling Tool Enhancement
NIA_NGET0165
Complete
Sep 2015
May 2017
National Grid Electricity Transmission
Gordon Wilson
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Network Innovation Allowance
None
Modelling, Asset Management and Electricity Transmission Networks
£500,000.00
Research and the fundamental re-development of TRALC will form the key deliverable. Testing of the new modelling tool, TRALC3, containing the new algorithms will necessitate the development of a new test case specification as the specification for the current TRALC2 will no longer be applicable. A TRALC3 user guide will form a piece of the new specification:

  • Numerical library completed, updated TRALC specification, client application developed

  • Model enhancements integrated, test case development for TRALC3 UAT, report on feasibility study for linking condition to capability for transformers, server framework application completed

  • TRALC3 deployment and User Guide

Hosting of TRALC3 and software support will be provided throughout the duration of the project to enable implementation and bug fixes. There is potential scope to provide support for software development outside of the initial specification. To ensure compatibility with existing systems within National Grid, TRALC3 will be made ready to integrate with the Strategic Asset Management (SAM) system.

  • Key deliverable - bug fixes complete

The upgraded TEFLOW tool will be delivered in a format no longer requiring a dongle for access, with a new graphical user interface and a user guide for calculation of thermal parameters for use within TRALC3.

  • Key deliverable - TEFLOW User Guide and deployment

The feasibility study looking at the links between condition and capability will deliver two reports.

  1. An interim report examining the key variables that are indicative of loss of thermal performance and the sensitivity of rating to these parameters.

  2. A final report outlining the potential for the use of monitoring degradation of the parameters of the indications of ageing pertinent to thermal performance.

In keeping with the innovation strategy for enhancing capacity, we have identified the opportunity to significantly improve the existing transformer thermal rating tool through the development of new modeling algorithms, all of which will future proof TRALC as well as improve the overall capability.

Enhancements will be made to associated tools which feed into TRALC; the TEFLOW thermal-hydraulic network modelling program and a feasibility study on linking condition to capability.

 

The research, development and trial of TRALC3 and the TEFLOW user interface, as well as a set of recommendations identified on the value of linking Condition to Capability to TRALC3. Completion of the scope of deliverables across the three correlated areas of development for this project:

  • Numerical library completed, updated TRALC specification, client application developed

  • Model enhancements integrated, test case development for TRALC3 UAT, report on feasibility study for linking condition to capability for transformers, server framework application completed

  • TRALC3 deployment and User Guide

  • TEFLOW User Guide and deployment

  • Completion of bug fixes