An adaptive event-triggered quantized secondary regulation strategy for microgrids with actuator faults

This paper focuses on the event-triggered quantized secondary regulation problem for islanded alternating-current (AC) microgrids with actuator faults. In order to handle the actuator faults, including bias faults and partial loss of effectiveness faults, a distributed secondary regulation strategy is proposed, which achieves voltage and frequency regulations, as well as power sharing. Due to the limited communication bandwidth, a uniform quantizer is introduced for information transmission. Meanwhile, to save system resources and relieve the communication burden, an adaptive event-triggered mechanism is designed. Finally, the proposed strategy is validated by using an islanded AC microgrid test system built in MATLAB/SimPowerSystems, which indicates that the proposed strategy increases the reliability of system and reduces the controller update times.