Summary
The Irish electricity grid is undergoing a rapid transformation driven by decarbonisation targets and the integration of renewable energy sources. This transition introduces planning, energisation and operational challenges, particularly the reduction of system fault levels due to the displacement of synchronous generation by inverter-based resources (IBR). Adequate fault levels are essential for maintaining system stability, protection coordination, and reliable operation. Certain areas of the Irish grid exhibit minimum fault levels approaching critical thresholds, particularly in regions dominated by IBR generation. Traditional protection systems may fail under these conditions, necessitating strategic reinforcement and technology upgrades.
Read more Read lessMapping minimum fault levels and implementing advanced technologies are vital steps toward ensuring a secure, resilient, and future-proof Irish grid. These measures will support Ireland’s renewable energy ambitions while maintaining operational reliability. This paper aims to map minimum fault levels geographically to identify weak areas based on real data issued to the users and assess emerging technologies that can enhance system performance under low-inertia conditions.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C4_12540_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Ireland |
| Study committees |
|
| File size | 814 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
SUBRAMANIAN Chandrasekaran - EirGrid; CUDDIHY Liam - EirGrid; NORONHA David - EirGrid; GOULDING Oisin - EirGrid
Keywords
Decarbonisation, Fault Levels, Weak grid, Connection Point, LCIS, GFM, New Technologies
