Title :
Robust Nonlinear Coordinated Control of TCSC and Generator Excitation
Author :
Lan, H. ; Zhang, L.K. ; Xu, D.G. ; Yang, L.H.
Author_Institution :
Autom. Coll., Harbin Eng. Univ., Harbin
Abstract :
An advanced robust nonlinear control scheme is proposed for single-machine infinite-bus power system (SMIS) equipped with thyristor controlled series compensation (TCSC). Firstly, for a class of multi-input multi-output (MIMO) nonlinear system with disturbances, a disturbance attenuation method in the sense of L 2 gain is proposed through recursive method to construct storage function, and then disturbance attenuation control law is obtained. Secondly, in view of the strong nonlinearity and uncertainty of power system, a nonlinear model with disturbances is constructed. Lastly, a new robust nonlinear coordinated control law of TCSC and generator excitation is developed. Simulation results on SMIS show clearly that the proposed control law can attenuates the influence of external disturbances on the system and transient stability of power system is improved.
Keywords :
MIMO systems; nonlinear control systems; power system transient stability; recursive estimation; robust control; thyristor applications; TCSC; disturbance attenuation method; generator excitation; multi-input multi-output nonlinear system; recursive method; robust nonlinear control scheme; robust nonlinear coordinated control; single-machine infinite-bus power system; storage function; thyristor controlled series compensation; transient stability; Control systems; Nonlinear control systems; Power capacitors; Power system control; Power system modeling; Power system simulation; Power system stability; Power system transients; Robust control; Thyristors; TCSC; dissipative; disturbance attenuation; excitation; nonlinear; robust;
Conference_Titel :
TENCON 2005 2005 IEEE Region 10
Conference_Location :
Melbourne, Qld.
Print_ISBN :
0-7803-9311-2
Electronic_ISBN :
0-7803-9312-0
DOI :
10.1109/TENCON.2005.300997
