Event-triggered control (ETC) is becoming increasingly popular in load frequency control (LFC) operation in power systems. So far, the existing literature has primarily focused on load disturbance rejection in face of communication delay without considering much on networked-induced measurement disturbances and messages sent. In this paper, we study the LFC operation as a problem of networked control system and propose, for the first time, an ETC based switching approach for frequency regulation. We derive delay-dependent conditions to obtain the lower bound on inter-event time during event-trigger mechanism which assures the robust stability under networked induced time-varying delays and measurement disturbance and reduction in the amount of sent measurements. The effectiveness of the proposed approach is verified via numerical examples based on single-, two-area power systems and single-area with electric vehicle (EV) participation.

中文翻译：

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通过开关方式控制事件触发的负载频率

事件触发控制 (ETC) 在电力系统的负载频率控制 (LFC) 操作中变得越来越流行。到目前为止，现有文献主要集中在面对通信延迟时的负载干扰抑制，而没有过多考虑网络引起的测量干扰和发送的消息。在本文中，我们将 LFC 操作作为网络控制系统的一个问题进行研究，并首次提出了一种基于 ETC 的频率调节开关方法。我们推导出依赖于延迟的条件以获得事件触发机制期间事件间时间的下限，这确保了在网络引起的时变延迟和测量干扰以及发送测量量减少的情况下的鲁棒稳定性。