Nikos Hatziargyriou

The Role of Microgrids in Enhancing Power System Resilience against Natural Disasters


Power system resilience is defined as the ability of power grids to anticipate, withstand, adapt and recover from high-impact low-probability (HILP) events. There are long-term and short-term measures that system operators can apply to enhance resilience.

Long-term measures include infrastructure hardening and resilient planning, while short-term operational measures are applied in the pre-event, during-event and post-event phase. Microgrids (MGs) can effectively enhance resilience for both transmission and distribution systems, due to their ability to operate in a controlled, coordinated way, when connected to the main power grid and in islanded mode.

In this presentation, various real-world events, where MGs have been used to enhance power system resilience in various extreme weather events. MG-based operational measures for resilience enhancement will be presented, including the systematic MGs formation after natural disasters hit the system and MG-based resilient operational planning.

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