Summary
Northern Ireland’s transmission system is undergoing rapid structural change driven by decarbonisation targets, electrification of heat, transport and industry, and increasing penetration of distributed renewable generation. These developments are altering traditional power-flow patterns and increasing uncertainty in asset loading, particularly at transmission– distribution interfaces. This paper presents two complementary methodologies to support strategic investment decisions: enhanced transformer thermal assessment using IEC 60076-7
Read more Read less[1] and advanced simulation of unmeasurable small-scale generation (SSG).
Using high-resolution SCADA data, transformer hot-spot temperature, cyclic loading capability, and insulation loss of life are quantified for Bulk Supply Points (BSPs). Seasonal analysis demonstrates that safe overload limits can be increased without accelerating asset ageing. In parallel, a novel rolling-profile simulation technique is introduced to represent the variability of unmeasurable SSG. Results show that conservative planning assumptions can unnecessarily restrict renewable connections. Together, these methods support improved asset utilisation, deferred capital investment, and accelerated renewable integration while maintaining system security.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C1_12553_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Ireland |
| Study committees | |
| File size | 2 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
WATSON Stuart - SONI; MCCLURE Michael - SONI
Keywords
.transformer ageing, loss of life, cyclic loading, embedded generation, strategic investment, transmission planning
