Title :
Analysis of voltage stability enhancement by robust nonlinear STATCOM control
Author :
Chen, H. ; Zhou, R. ; Wang, Y.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
This paper discusses robust nonlinear control of static compensator (STATCOM) to improve power system voltage stability. Direct feedback linearization (DFL) technique is employed to transform the nonlinear STATCOM model into a linear one. A robust approach is used to eliminate the effect of parametric uncertainties. Simulation results show that the proposed controller achieves good voltage regulation in the presence of parameter uncertainties. The impact of the controller on voltage stability is studied on a three-machine system. It is shown that the feasibility region has been enlarged
Keywords :
feedback; linearisation techniques; power system control; power system dynamic stability; robust control; static VAr compensators; voltage control; direct feedback linearization; feasibility region; linear STATCOM model; nonlinear STATCOM model; parametric uncertainties effect elimination; power system voltage stability; robust nonlinear STATCOM control; three-machine system; voltage regulation; voltage stability; voltage stability enhancement; Automatic voltage control; Control systems; Nonlinear control systems; Power system modeling; Power system simulation; Power system stability; Robust control; Robust stability; Stability analysis; Voltage control;
Conference_Titel :
Power Engineering Society Summer Meeting, 2000. IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-6420-1
DOI :
10.1109/PESS.2000.868828
