Summary
The Nordic power system is undergoing a fundamental transformation driven by decarbonization, electrification, and large-scale integration of power electronic interfaced devices (PEIDs), including wind, solar, HVDC links, battery storage and large demand facilities, including data centres and electrolysers. This shift introduces new dynamic behaviours and stability risks that are often not fully addressed and analysed when a new PEID is connected to the grid.
Read more Read lessThis paper describes a scalable framework for stability assessment at the grid interface that can be readily integrated as part of the connection process. The stability assessment is based on impedance-based analysis using the Single-Input Single-Output (SISO) Nyquist criterion and accounts for both positive and negative sequence behaviour, including frequency coupling effects over the grid impedance. The proposed connection-process-ready framework links the theory, assumptions and practical implementation.
The applicability of this framework is demonstrated by the means of a case study, which comprises a 300 MVA PEID with a generic control architecture and which considers different operating scenarios.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C4_12258_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Sweden |
| Study committees |
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| File size | 793 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
LENNERHAG Oscar - Svenska kraftnät; ROGERSTEN Robert - Svenska kraftnät; BEHROUZIAN Ehsan - Svenska kraftnät; HOHN Fabian - Svenska kraftnät
Keywords
