Title :
Damping of Low Frequency Oscillations of Multi-Machine Multi-UPFC Power Systems, Based on Adaptive Input-Output Feedback Linearization Control
Author :
Shojaeian, Shahrokh ; Soltani, Jafar ; Markadeh, Gholamreza Arab
Author_Institution :
Dept. of Electr. Eng., Islamic Azad Univ., Tehran, Iran
Abstract :
In this paper, damping of the low frequency oscillations of multi-machine multi-UPFC power systems is investigated based on adaptive input-output feedback linearization control (AIFLC) approach. Considering a three-phase symmetrical fault, ignoring the subtransient states of the synchronous machines, the nonlinear state equations of the system are derived in order to obtain the UPFC reference control signals as well as the system parameters estimation laws. The stability of the system controller is proved by Lyapunov theory. Moreover using the six reduced order model of synchronous machine, some simulation results are presented in order to verify the validity and effectiveness of the proposed control approach.
Keywords :
Lyapunov methods; adaptive control; fault diagnosis; feedback; load flow control; machine control; nonlinear control systems; parameter estimation; power system control; reduced order systems; stability; synchronous machines; AIFLC approach; Lyapunov theory; adaptive input-output feedback linearization control; low frequency oscillations damping; multimachine multi-UPFC power systems; nonlinear state equations; parameters estimation laws; reduced order model; reference control signals; synchronous machines; system controller stability; three-phase symmetrical fault; unified power flow controller; Flexible AC transmission systems; Frequency control; Mathematical model; Nonlinear control systems; Oscillators; Power system stability; Low frequency oscillations; UPFC; nonlinear control; power system stability;
Journal_Title :
Power Systems, IEEE Transactions on
DOI :
10.1109/TPWRS.2012.2194313
