Dynamic Phasor Modeling of Optimally Scheduled Prospective Islanded Microgrid

As microgrids become more prevalent in the energy industry, strategies are needed for maintaining their stability and identifying transient anomalies. In this paper, a modeling tool is proposed for: a) optimally sizing prospective DERs for an islanded microgrid, b) optimally scheduling the microgrid's power flows, and c) characterizing the dynamics associated with all transitions in the optimized energy schedule. Dynamic phasor (DP) modeling is used in this tool for its ability to model dynamics with large time steps and high fidelity. The methodologies for the tool's sub-models are rigorously described before assessing their accompanying results. Analyzing the results of the proposed tool reveals that overvoltage can occur for power flows scheduled to maintain power balance. By using the proposed tool to identify these dynamic issues, Engineers can address these issues ahead of time and minimize the occurrence of dynamic anomalies during the microgrid's operations.