Robust Load Frequency Control of Power Systems Against Random Time-Delay Attacks
Kaishun Xiahou, Yang Liu, Qinghua Wu
Abstract
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.
Topics & Concepts
Control theory (sociology)Perturbation (astronomy)Electric power systemAutomatic frequency controlComputer scienceControl systemEngineeringPower (physics)Control (management)PhysicsTelecommunicationsArtificial intelligenceElectrical engineeringQuantum mechanicsFrequency Control in Power SystemsHVDC Systems and Fault ProtectionPower System Optimization and Stability