Study of stability of an islanded microgrid in the presence of communication delays

This paper studies the operation of a microgrid under various scenarios with a focus on the effect of communication delays. The test microgrid is the CIGRE-IEEE low-voltage system, and a variety of loads are modeled in the system, including a nonlinear load, an impulse load, a battery, a highly capacitive load, and a highly inductive load. The simulation studies cover three scenarios: 1) a system with load changes, 2) a system with a transient fault, and 3) a system with both a transient fault and communication delay. The paper aims to determine the maximum permissible latency for all the case studies.