The objective of master thesis was to verify solar stations response to mains frequency deviations and their impact on frequency stability, focusing on transition into islanded operation and island operation itself. Solar power represents a significant share in the production scheme, as there is over 80 GW of solar power installed in the European interconnected system. The primary focus of the European system operators, when dealing with frequency stability, is the so-called »50.2 Hz« problem, which causes disconnection of the solar station from the grid in case of over-frequency. Solving this issue is crucial for the European interconnected system stability. Dynamic analyses are based on NETOMAC model of Medvode-Mavčiče island and solar stations impact on frequency stability tested, while checking the impact of immediate disconnection at 50.2 Hz and frequency control. Simulations demonstrate a positive effect of frequency control as there is a major improvement on frequency stability.
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