Abstract
Microgrid has the capability to maintain a reliable power supply during an emergency; microgrid technology is also suitable to deliver power to rural communities where providing power from the main grid is not economical. These microgrids can experience severe frequency variation due to their inherently low inertia. In this paper, we derive a closed-form formula to compute the dynamic frequency stability margin and propose a procedure to evaluate it using local measurements available in any location in the microgrid. The dynamic stability margin could be utilized to activate suitable responses from distributed energy resources during emergency situations to maintain frequency stability.
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