标题： 通信延迟和采样对含IBR电力系统小信号稳定性的影响 显示英文标题

标题： Impact of Communication Delay and Sampling on Small-Signal Stability of IBR-rich Power Systems

摘要： 逆变器基础资源（IBRs）的日益采用在电力系统中引入了前所未有的动态特性，导致在广泛频率范围内的振荡。 在IBR电站中，电厂级控制与逆变器级控制之间的通信延迟已被认为是这种振荡的原因之一，并且是影响系统稳定性的因素。 来自电厂级控制器的控制信号也经历了采样，采样值由保持元件在采样周期内保持恒定。 这也对IBR电站的响应产生影响。 在本文中，我们分析了电网跟随型IBR电站中电厂级控制与逆变器级控制之间通信延迟和控制信号采样对电力系统小信号稳定性的影响。 重新审视了通信延迟和采样的基本原理，以解释观察到的响应。 我们的研究结果强调了通信延迟和采样周期对IBR丰富电力系统稳定性独特的影响，并提出了缓解其有害影响的策略。 这项工作还突出了需要更精确的方法来进行此类系统的的小信号稳定性分析。 显示英文摘要

摘要： The growing adoption of inverter-based resources (IBRs) has introduced unprecedented dynamics in power systems, resulting in oscillations across a broad spectrum of frequencies. Communication delay between the plant-level control and the inverter-level control in IBR plants has been recognized as one of the causes of such oscillations and a factor that impacts the system's stability. The control signals from the plant-level controller also experience sampling, with the sampled values held constant by the hold elements for the duration of the sampling period. This also has a bearing on the response of IBR plants. In this paper, we analyze the impacts of communication delay and sampling of control signals between plant-level control and inverter-level control of grid-following IBR plants on the small-signal stability of power systems. The underlying fundamentals of communication delay and sampling are revisited to explain the observed responses. Our findings emphasize the unique effects of communication delay and sampling period on the stability of IBR-rich power systems and suggest strategies to mitigate their detrimental impacts. The work also highlights the need for more accurate approaches for small-signal stability analysis of such systems.