Distributed Event-Triggered Secondary Voltage Control for Microgrids With Time Delay

We consider the distributed secondary voltage control problem for microgrids subject to delays in a connected communication topology. For each distributed generator (DG), a distributed event-triggered control law, which uses its own voltage and those of its neighbors, along with a strategy for its triggering, are designed. Under these distributed event-triggered control laws, the magnitudes of the output voltages of all DGs can be synchronized to their reference value subject to a bounded time-varying delay that can be arbitrarily large, and no Zeno behavior will occur. The simulation results illustrate the theoretical conclusions.