This letter presents a perturbation estimation based robust load frequency control (LFC) scheme for power system subject to random time-delay attack. Perturbation term is defined to describe the measurement deviation caused by random time-delay attack. Besides, perturbation observer is designed to estimate the system perturbation. The load frequency controller is compensated based on the perturbation estimation to mitigate the random time-delay attack and ensure the stable operation of power system. Case studies are undertaken on a two-area LFC model to demonstrate the control performance of the scheme.

中文翻译：

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电力系统的鲁棒负载频率控制以抵抗随机时延攻击

这封信提出了一种基于扰动估计的鲁棒负载频率控制（LFC）方案，该方案适用于遭受随机时延攻击的电力系统。定义了扰动项来描述由随机延时攻击引起的测量偏差。此外，设计了扰动观测器来估计系统扰动。基于扰动估计对负载频率控制器进行补偿，以减轻随机时延攻击，确保电力系统的稳定运行。在两个区域的LFC模型上进行了案例研究，以证明该方案的控制性能。