Robust Load Frequency Control of Power Systems Against Random Time-Delay Attacks

作者：Xiahou, K. S.; Liu, Y.; Wu, Q. H.^*

来源：IEEE Transactions on Smart Grid, 2021, 12(1): 909-911.

DOI：10.1109/TSG.2020.3018635

• Perturbation methods
• Frequency control
• Delays
• Observers
• Power system stability
• Time-frequency analysis
• Load frequency control
• random time-delay attack
• perturbation observer

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.