Resilient fixed-order distributed dynamic output feedback load frequency control design for interconnected multi-area power systems

Abstract

This paper presents a novel load frequency control (LFC) design using integral-based decentralize fixed-order perturbed dynamic output tracking scheme in a delay dependent nonlinear interconnected multi-area power system via LMI approach. The tracking controller is designed such that the effects of the parameter variations of the plant and dynamic output controller as well as load disturbances are minimized. The inputs and outputs of each controller are local, and these independent controllers are designed such that the robust stability of the overall closed-loop system is guaranteed. Simulation results for both two-and three-area power systems are provided to verify the effectiveness of the proposed design scheme. The simulation results show that the decentralized controlled system behaves well even when there are large parameter perturbations and unpredictable disturbances on the power system.

H ∞ distributed frequency control with unknown communication delays and parametric uncertainties

“…The initial values of the frequency deviations are 5, 3, 2, 1 Hz, respectively. The configured simulink parameters in (2) are as follows 16 :…”

“…Reference 15 studied the stability of LFC with time‐varying input delays and parameter uncertainties by using sliding mode control. Reference 16 studied the stability of LFC with interconnected communication delays by using linear matrix inequality methods. These references discussed the impact of the delay signal and parameter uncertainty on the LFC clearly.…”

Real‐time model‐free resilient control for discrete nonlinear systems

“…In Wang and Yaz [6], a robust and resilient state estimator based on a novel second-order fault-tolerant extended Kalman filter is designed with experimental results for continuous-time nonlinear system. Azarbahram et al [7] propose a resilient controller for interconnected multiarea power systems modeled as a continuous-time nonlinear system; a similar approach is presented by Ebrahim et al [8] where it is proposed as a robust nonfragile approach to resilient design of PID-based blade pitch control for wind energy conversion system and its results are validated by simulation results. In Mardani et al [9], a nonfragile controller design of uncertain saturated polynomial fuzzy systems is described, which is subjected to persistent bounded disturbance with experimental results applied to a ball-and-beam system in continuous time.…”