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Task lead by R&D Nester in OSMOSE Project delivers results on Stability, Flexibility and Reserve Exchange for the European Power System

As the Energy Transition progresses, namely with the introduction of diverse flexibility sources, it is important to ensure that the stability, efficiency and security of supply of the system is kept. OSMOSE project ("Optimal System-Mix of Flexibility Solutions for European Electricity") is looking into those aspects.

In the context of the activities from task T1.4 - Innovative Flexibility Options in the Context of Planning, Operation and Stability, led by R&D NESTER, the partners REN (PT) and ENSiEL (IT) successfully delivered the internal deliverables associated with their sub-tasks at the beginning of the current month of April.

These reports addresses two relevant topics from WP1 (Work Package), which tackles the long-term flexibility needs of the European power system, namely through the assessment of the impact of flexibility resources in multiple dimensions:

Sub-task 1.4.2 - "Cross-border reserve exchange for improved flexibility and efficiency", led by REN (Portuguese TSO), evaluates the long-term scenarios developed within WP1, with special focus on the Continental South West region (including Portugal, Spain and France), from the operational reserve needs perspective for this interconnected system. In this work, REN resorted to own tools.

Sub-task 1.4.3 - "Stability aspects", led by ENSiEL (Italian consortium of public universities), analysed the impact of high levels of renewable energy sources (RES) in the dynamic stability of South Italy power system. Additionally, assessed the contribution of these flexible resources, characterized by a power-electronics' based interface and/or low inertia (e.g. wind, solar, battery energy storage), to the dynamic stability of the system.

The two reports provide key takeaways from the analysis on the OSMOSE scenarios for 2030 and 2050 time horizons.

From the sensitivity analysis performed in T1.4.2 for the Continental South-West region (PT, ES, FR), none of the scenarios lead to any type of security of supply constraint. Nevertheless, in the scenario Current Goals 2050 the operation conditions were more demanding leading in some circumstances to reliability indexes (e.g. LOLE or EENS) greater than zero.

On the other side, in the stability analysis performed in T1.4.3 on part of the Italian power system, the simulation results support that the Sicilian power system operates within the normal frequency range when interconnection with continental Italy is maintained. In the case this interconnection is lost, the Sicilian system becomes less stable, requiring, in some scenarios, the contribution from wind farms, BESS and DSR (e.g. synthetic inertia) in order to be able to maintain the system's stability.

This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement N°773406.


For more information:

OSMOSE website

Osmose Project (R&D Nester website)

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