Title :
Studies of voltage stability via a nonlinear SVC control
Author :
Wang, Yannan ; Chen, H. ; Zhou, R. ; Hill, D.J.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
This paper discusses voltage stability enhancement by a nonlinear SVC controller. The proposed controller is designed through direct feedback linearization (DFL) technique. The effect of the controller on voltage stability is studied through small signal stability analysis on both single-machine and multi-machine power systems. In both systems, voltage stability is lost when an unstable Hopf bifurcation is encountered. When the nonlinear SVC control is taken into account, the Hopf bifurcation can be eliminated. Voltage stability is therefore improved significantly
Keywords :
bifurcation; control system synthesis; feedback; nonlinear control systems; power system control; power system dynamic stability; reactive power control; static VAr compensators; Hopf bifurcation elimination; direct feedback linearization; multi-machine power systems; nonlinear SVC control; single-machine power systems; small signal stability analysis; unstable Hopf bifurcation; voltage stability; voltage stability enhancement; Control systems; Jacobian matrices; Linear feedback control systems; Power system analysis computing; Power system dynamics; Power system modeling; Power system stability; Stability analysis; Static VAr compensators; Voltage control;
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
DOI :
10.1109/PESW.2000.850155
