DocumentCode :
3466407
Title :
Nonlinear decentralized excitation and governor coordinated control for hydraulic power plants
Author :
Jin, M.J. ; Hu, W. ; Liu, F. ; Mei, S.W. ; Lu, Q.
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., China
Volume :
1
fYear :
2004
fDate :
21-24 Nov. 2004
Firstpage :
918
Abstract :
In this paper, a nonlinear decentralized excitation and governor coordinated controller design for hydraulic power plants is proposed to enhance power system transient stability. First, the excitation system and hydro-governor system, considering non-elastic water hammer effect, is modeled as a whole. Then, based on differential geometric theory, the original nonlinear system for multi machines is exactly linearized by appropriate coordinate transformation. After that, linear optimization control is applied such that the final optimized nonlinear excitation and governor coordinated control law can be obtained. To demonstrate the efficiency and analyze the coordination mechanism of the proposed controller, simulations on an OMIB system and the EPRI-36 system are performed. Comparison with classical excitation and governor control, nonlinear optimal excitation control, nonlinear robust governor control, the suggested decentralized and coordinated control can achieve pretty better performance in improving the transient stability of power systems.
Keywords :
decentralised control; hydroelectric generators; hydroelectric power stations; linear systems; nonlinear control systems; optimal control; optimisation; power generation control; power system transient stability; robust control; appropriate coordinate transformation; coordination mechanism; differential geometric theory; governor coordinated control; governor coordinated control law; hydraulic power plants; hydro-governor system; linear optimization control; multimachines; nonelastic water hammer effect; nonlinear decentralized excitation; nonlinear robust governor control; optimized nonlinear excitation; power system transient stability; Control systems; Nonlinear control systems; Nonlinear systems; Optimal control; Power generation; Power system modeling; Power system simulation; Power system stability; Power system transients; Robust stability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power System Technology, 2004. PowerCon 2004. 2004 International Conference on
Print_ISBN :
0-7803-8610-8
Type :
conf
DOI :
10.1109/ICPST.2004.1460125
Filename :
1460125
Link To Document :
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