With the increasing integration of renewable and sustainable energy in microgrids, the prediction errors of these energy resources may degrade the economic efficiency of a microgrid because there is a time-scale gap between the large time-scale economic dispatch and the small time-scale frequency restoration control. In this paper, a distributed event-triggered secondary control method is proposed to deal with the economic dispatch and frequency restoration control for droop-controlled AC microgrids. The proposed control strategy can ensure economic dispatch and frequency restoration control at the same time, which reduces the operation cost of AC microgrids by bridging the time-scale gap between them. Furthermore, a simple event-triggered condition is designed to implement the proposed event-triggered secondary control, which only requires the communication between the neighboring agents when a significant change of state in the microgrid occurs, which is easy to implement and can reduce the communication burden.

中文翻译：

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分布式事件触发的次级控制，用于下垂控制的交流微电网的经济调度和频率恢复控制

随着微电网中可再生能源和可持续能源的日益融合，这些能源的预测误差可能会降低微电网的经济效率，因为在大型经济规模调度和小型频率频率之间存在时间尺度差距恢复控制。提出了一种分布式事件触发的二次控制方法来处理下垂控制的交流微电网的经济调度和频率恢复控制。所提出的控制策略可以同时保证经济调度和频率恢复控制，通过弥合时间尺度上的差距，降低了交流微电网的运行成本。此外，还设计了一个简单的事件触发条件来实现建议的事件触发辅助控制，