Distributed Secondary Control for Voltage Regulation in Microgrids Using an Event-Triggered Communication Mechanism

The emerging adoption of distributed generation in DC microgrids requires more complex secondary control schemes that can guarantee voltage regulation, power sharing, and less communication overheads. This paper introduces a dynamically controlled secondary control architecture of the coordinated voltage regulation of a number of distributed generators (DGs) under different conditions of power demand. In contrast to traditional time-based strategies, the given approach will only update the control actions if the predetermined triggering conditions have been broken, which will considerably decrease the amount of unneeded communication and control updates. The performance of the scheme is measured in two working conditions, which are constant power demand and load step changes. The outcome of the simulation shows that there is smooth convergence in consensus, stable voltage condition and sound transient operation in all DG units. Further, the initiation of activity is limited to short bursts, which proves the effectiveness of event-driven mechanism in reducing communication load but maintaining the stability and flexibility of the system. These findings confirm the suggested plan to be a credible and scalable solution of intelligent microgrid management of energy.