Dynamics-aware Optimal Operation of Microgrids in Islanded Mode

This paper formulates a dynamics-aware linearized optimal power flow (OPF) problem that co-optimizes operation cost and frequency regulation of islanded microgrids in response to load disturbances. The proposed dynamics-aware model penalizes frequency deviations in the objective function, thus tracking the system frequency to synchronous value in steady state by suitably updating generator reference set-points. The use of linearized power flow constraints promotes computational practicality while maintaining sufficient modelling fidelity. We demonstrate the benefits of the proposed model via numerical case studies involving an 18-Bus AC shipboard test system serving as a practical instance of an islanded microgrid.