Nonsingular terminal sliding-mode controller with nonlinear disturbance observer for chaotic oscillation in power system

Abstract

To restrain chaotic oscillation in power system, a nonsingular terminal sliding-mode (NTSM) controller with nonlinear disturbance observer based on a novel reaching law is proposed in this paper. In order to obtain faster convergence of state variables, a novel reaching law is employed in this paper, which can shorten the reaching time and weaken system chattering. Based on this reaching law, a NTSM controller is developed to suppress and eliminate the chaos oscillation in power system. Comparing with the other control algorithms, simulation results verify the effectiveness of the proposed methods.