Resilience of the Baltic Power System When Operating in Island Mode

In light of continuously growing penetration of nonsynchronous generation, the gas-fired plants along with hydro power will provide the major part of system inertia and frequency reserves. This article evaluates the resilience of the Baltic power grid in the event of outage of a major natural gas-fired power plant. An importance of such evaluation is justified by a set of additional challenges, the Baltic power grid will experience due to its disconnection from the unified power system of Russia and synchronization with the European Network of Transmission System Operators synchronous power system in 2025. A case study, highlighting the system resilience-related problems will be presented in the article. The results can be used in the planning activities of transmission system operators undergoing energy transition and preparing for operation in low-inertia grid modes.