Adaptive Fault Tolerant Control Design for Multimachine Power Systems
محل انتشار: دومین کنفرانس بین المللی مهندسی برق
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 557
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شناسه ملی سند علمی:
ICELE02_039
تاریخ نمایه سازی: 7 اسفند 1396
چکیده مقاله:
This paper presents an adaptive Fault Tolerant Control (FTC) 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 system’s 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 fault tolerant control scheme.
کلیدواژه ها:
Multimachine system ، Adaptive feedback linearization control ، Generator excitation control ، Fault Tolerant Control
نویسندگان
Narges Zamani Moghadam
Faculty of Electrical Engineering, Urmia University of Technology, Urmia, Iran
Mohammad Pourmahmood Aghababa
Faculty of Electrical Engineering, Urmia University of Technology, Urmia, Iran
Mortaza Aliasghary
Faculty of Electrical Engineering, Urmia University of Technology, Urmia, Iran