Observer-Based H ∞ Load Frequency Control for Networked Power Systems with Limited Communications and Probabilistic Cyber Attacks

Yixuan Ge, Guobao Liu, Guishu Zhao, Huai Liu and Ji Sun
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Yixuan Ge: School of Electrical and Automation, Nanjing Normal University, Nanjing 210046, China
Guobao Liu: School of Electrical and Automation, Nanjing Normal University, Nanjing 210046, China
Guishu Zhao: School of Electrical and Automation, Nanjing Normal University, Nanjing 210046, China
Huai Liu: School of Electrical and Automation, Nanjing Normal University, Nanjing 210046, China
Ji Sun: School of Electrical and Automation, Nanjing Normal University, Nanjing 210046, China

Energies, 2022, vol. 15, issue 12, 1-16

Abstract: This paper studies load frequency control (LFC) for networked power systems with limited communications and probabilistic cyber attacks. Some restrictions exist during the information transmission, which can impair behavior and lead to instability of power systems. Throughout this paper, we consider such power systems that involve multi-path missing measurements and input–output time-varying delays as well as cyber attacks in the communication channels. A feedback controller is presented, which is based on the observer to implement H ∞ LFC for power systems with disturbance rejection level γ . By Lyapunov stability theory, adequate criteria are given to ensure the stable operation of power systems. Finally, the validity of theoretical analysis is demonstrated and illustrated by numerical simulations.

Keywords: LFC; networked power systems; observer; time-varying delays; multi-path missing measurements; cyber attacks (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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