Title :
H∞ analysis method for the small signal stability of power system
Author :
Shengwei, Mei ; Wenyan, Che
Author_Institution :
Tsinghua Univ., Beijing
Abstract :
This work is concerned with the small signal stability problem in multi-machine systems. By means of H∞ theory, firstly the math model with disturbances is constructed; and secondly, the excitation control law for each generator is designed based on solving Riccati equation. Finally, simulations performed on 4-machine system shows that the proposed H∞ method has more advantages over LQR method in both damping ratio and H∞ norm of the corresponding closed-loop system and so can enhance the small signal stability of power system greatly.
Keywords :
H∞ control; Riccati equations; closed loop systems; control system synthesis; damping; linear quadratic control; power system control; power system simulation; power system stability; H∞ analysis method; LQR method; Riccati equation; closed-loop system; damping ratio; excitation control law design; multimachine system; power system; simulation; small signal stability; Control systems; Power generation; Power system control; Power system modeling; Power system simulation; Power system stability; Power system transients; Power systems; Signal analysis; Stability analysis; Excitation control; H∞ method; Multi-machine systems; Small signal stability;
Conference_Titel :
Control Conference, 2007. CCC 2007. Chinese
Conference_Location :
Hunan
Print_ISBN :
978-7-81124-055-9
Electronic_ISBN :
978-7-900719-22-5
DOI :
10.1109/CHICC.2006.4347628
