Robust aggressive load-frequency control of networked electric power systems

This article addresses the design problem of aggressive load frequency controllers which are robust against load disturbances. The controller design is comprised of three components and the design is formulated as a multiobjective LMI optimization problem. The first component places the closed loop poles in a predefined convex LMI region while providing fast transient response and disturbance rejection. The second component implements the required integral action and determines the closed-loop bandwidth, while the third component places a limit on the control energy. H∞/mixed-sensitivity methodologies are employed in a state-space formulation leading to a tuning strategy with an engineering interpretation Simulation studies are offered to illustrate the efficiency of the control design.