SINR-Dependent Event-Triggered based Distributed Secondary Frequency Regulation and Power Sharing with Jamming Attacks

This work develops a distributed proportional-integral (PI) controller combined with the signal-to-interference-plus-noise ratio (SINR)-dependent dynamic event-triggered (DET) communication strategy to cope with the frequency regulation and power sharing problems subject to jamming attacks in an inverter-based islanded microgrid. In order to simplify the controller structure, power sharing and frequency restoration can be implemented simultaneously in the designed secondary control layer instead of the traditional hierarchical control implementation. Besides, the dynamic event-triggered communication strategy configured with each secondary controller can adaptively adjust the triggered threshold based on the SINR signal, which can reduce the congestion of communication networks caused by jamming attacks and ensure system control performance. A cyber-physical microgrid testbed is built based on the real-time simulator, OPAL-RT, and network simulation software, EXata, to verify the effectiveness of the proposed SINR-dependent event-triggered based distributed secondary controller.