طراحي كنترل تطبيقي تحمل پذير عيب براي سيستم هاي قدرت چندماشينه

Adaptive Fault Tolerant Control Design for Multimachine Power Systems

This paper presents an Adaptive Fault Tolerant Control AFTC design for nonlinear power systems with unknown actuator failures The method is based on the efficient multi input multi output linearization technique Inexact cancellation of terms due to uncertainties may result in performance deterioration like inter system oscillations Adaptation in estimated parameters is utilized to achieve an asymptotically exact cancellation of terms It is shown that the adaptive control results in bounded states and maintains the desired performance The power system considered here is comprised of two generators connected to a load and an infinite bus through a transmission network First the derivatives of the systems output is calculated repeatedly in order to find the relative degree of the system Then the dynamics of the power system are linearized by using the feedback linearization technique Subsequently a nominal adaptive controller is designed to stabilize the system In the proposed approach if an actuator failure happens the derived adaptive fault tolerant controller accommodates its effect Simulation results demonstrate the effectiveness of the adopted AFTC scheme

This paper presents an Adaptive Fault Tolerant Control AFTC design for nonlinear power systems with unknown actuator failures The method is based on the efficient multi input multi output linearization technique Inexact cancellation of terms due to uncertainties may result in performance deterioration like inter system oscillations Adaptation in estimated parameters is utilized to achieve an asymptotically exact cancellation of terms It is shown that the adaptive control results in bounded states and maintains the desired performance The power system considered here is comprised of two generators connected to a load and an infinite bus through a transmission network First the derivatives of the systems output is calculated repeatedly in order to find the relative degree of the system Then the dynamics of the power system are linearized by using the feedback linearization technique Subsequently a nominal adaptive controller is designed to stabilize the system In the proposed approach if an actuator failure happens the derived adaptive fault tolerant controller accommodates its effect Simulation results demonstrate the effectiveness of the adopted AFTC scheme