Dynamic analysis and controlling chaos of the electrical power system with the disturbance of electromagnetic power

In this paper, the complex nonlinear dynamic phenomenon in a single-machine infinite-bus formulation is investigated. The sensitivity of the electromagnetic power disturbance is studied specifically by the Lyapunov exponent spectrum, bifurcation diagram, power spectrum, Poincaré maps and so on. A quasi-sliding mode control based on delay function is proposed to control the chaotic oscillation, and stabilize the system to the target. Simulation results show that the control method can not only suppress chattering phenomenon effectively and smoothly, but also possesses rapid convergent speed.