Nonlinear adaptive decentralized stabilization control for multimachine power systems

Abstract

This paper presents a decentralized adaptive backstepping controller to dampen oscillations and improve the transient stability to parametric uncertainties in multimachine power systems. The proposed design on the i th synchronous generator uses only local information and operates without the need for remote signals from the other generators. The design of the nonlinear controller is based on a modified fourth-order nonlinear model of a synchronous generator, and the automatic voltage regulator model is considered so as to decrease the steady state voltage error. The construction of both the control law and the associated Lyapunov function is systematically designed within the design methodology. A 3-machine power system is used to demonstrate the effectiveness of the proposed controller over two other controllers, namely a conventional damping controller (power system stabilizer) and one designed using the feedback linearization techniques.

A Decentralized Multivariable Robust Adaptive Voltage and Speed Regulator for Large-Scale Power Systems

“…[1][2][3][4][5][6]. The parameters of this model depend on load characteristics and network structure.…”

“…If that is not the case, they can easily be estimated by an unknown input state estimator [22] with eqs. [3][4][5] representing the plant and G f ii…”

“…Many recent works on power system stability control are evidence of the importance of this issue ( [1][2][3][4][5][6] and references therein). The trend is the application of new advanced control methods for the design of more effective power system regulators.…”

“…The next section proposes model-based voltage and speed regulators to stabilize the system represented by eqs. [1][2][3][4][5][6] with unknown parameters.…”

Neuro-fuzzy and nondominated sorting genetic algorithm based power system stabilizer design

“…They are employed to develop damping torque for the rotor oscillations across the excitation systems. In most research works, the traditional PSS (CPSS) was commonly provided as a lead-lag filter (Li et al, 2009;Abido, 2000;Sebaa and Boudour, 2009). An extensive research to study the impact of the CPSS parameters on the temporary and powerful activities of power system is provided in (Kundur et al, 1989).…”