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  • Report
  • Nuclear Power

Fast Frequency Support Impact On Nuclear Generation

| 2025:1145 | Danilo Obradovic', RISE
This project assessed how Fast Frequency Support (FFS) from an HVDC link interacts with nuclear-type synchronous generator dynamics.
2025-1145

A Nordic-based test case was modelled, and droop-based and synthetic inertia FFS studied. Simulations across varied scenarios show that FFS can enhance the system stability when appropriately implemented, though certain edge cases reveal risks if control coordination is poor.

Publications and reports

Here you will find reports and fact sheets from the program.

    • Report

    Fast Frequency Support Impact On Nuclear Generation

    This project assessed how Fast Frequency Support (FFS) from an HVDC link interacts with nuclear-type synchronous generator dynamics.

    |2025:1145Danilo Obradovic', RISE
    2025-1145
    • Report

    Impact of over-frequency events on Nordic NPPs

    This report quantifies over-frequency events by using a simulation model of the Nordic synchronous system and simulating different faults related to the HVDC links, in combination with operating conditions of high and low inertia.

    |2025:1118Matilda Arvidsson, Andreas Benjaminsson Lucas Finati Thomée, Daniel Karlsson
    Bild till webben 2025-1118
    • Report

    Exchange Strategies for Power Electronics in Rectifiers and UPS System for NPP

    Replacing outdated power electronics in NPP auxiliary systems is crucial for maintaining operational reliability and safety.

    |2025:1107Frede Blaabjerg
    bild webben.png
    • Report

    Trends of frequency deviations

    In this report grid frequency statistics of the last two decades have been examined together with analysis of inertia values of the Nordic Power System. Interviews have been held with the Nordic Nuclear Production Plant owners and the Swedish and Finnish TSOs. Conclusions are made whether it exist correlations with system quantities like frequency quality, inertia, wind power production, wear and tear of nuclear plants, and system services.

    |2025:1091VIKTORIJA DUDJAK, JONAS PERSSON, MARKUS BJÖRKLUND
    2025 1091 Rapportbild Webben