- Rapport
- Kärnkraft
Voltage dip transients and auxiliary equipment in nuclear power stations
Voltage-dip transients, oscillations at the beginning and ending of voltage dips, occur due to faults in the transmission system. They propagate to the terminals of auxiliary equipment and may have a negative impact on the performance of that equipment.
Today, there is limited knowledge on origin, propagation, and impact of voltage-dip transients.
The results in this report highlight the significant impact of voltage dip transients on equipment performance. The study concludes with recommendations for further research and measures to enhance equipment immunity.
Rapporter och publikationer
Här listas rapporter och resultatblad från programmet.
- Rapport
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
- Rapport
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
- Rapport
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Replacing outdated power electronics in NPP auxiliary systems is crucial for maintaining operational reliability and safety.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
- Rapport
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