Title :
A Gain-Scheduled State Feedback Control Method For The Transcient Stability Control of A Single-Machine Infinite-Bus Power System
Author :
Rong He ; Kang-Zhi Liu ; Shengwei Mei ; Xiaoyang Gui
Author_Institution :
Dept. of Electron. & Mech. Eng., Chiba Univ., Japan
Abstract :
In this paper, a new approach is proposed for the transient stability control of a single-machine infinite-bus power system. The proposed method is based on the concept of linear parameter varying (LPV) model and linear matrix inequality (LMI) based gain-scheduling control. It is well-known that when the disturbances are large, the nonlinearity inherent in the power system can no longer be ignored and the performance of closed-loop system designed based on linear approximation degrades severely in such case. Here, we propose a control method which handles the nonlinear model directly and is able to assign the convergence rate. First, we show that the nonlinear model can be transformed into an LPV system with the rotor angle as the time-varying parameter. Then, a gain-scheduled controller is designed by using the gain-scheduling control method. In particular, the input saturation is taken into consideration in the design. Simulation results verify that the proposed method is effective.
Keywords :
linear matrix inequalities; machine control; nonlinear control systems; power system control; stability; state feedback; time-varying systems; closed-loop system; gain-scheduling control; linear matrix inequality; linear parameter varying model; nonlinear model; polytopic form; rotor angle; single-machine infinite-bus power system; state feedback control; time-varying parameter; transcient stability control; Control systems; Degradation; Linear approximation; Linear matrix inequalities; Power system control; Power system modeling; Power system stability; Power system transients; Power systems; State feedback; Gain scheduling; linear matrix inequalities (LMIs); linear parameter varying (LPV); polytopic form; singlemachine infinite-bus power system;
Conference_Titel :
Control Conference, 2006. CCC 2006. Chinese
Conference_Location :
Harbin
Print_ISBN :
7-81077-802-1
DOI :
10.1109/CHICC.2006.280935