제어로봇시스템학회:학술대회논문집
- 2004.08a
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- Pages.448-453
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- 2004
Decentralized Nonlinear Voltage Control of Multi-machine Power Systems with Nonlinear Interconnections
- Lee, Jae-Won (Department of Electrical Engineering, Korea University) ;
- Yoon, Tae-Woong (Department of Electrical Engineering, Korea University) ;
- Im, Sun (Department of Electrical Engineering, Korea University)
- Published : 2004.08.25
Abstract
In this paper, an adaptive robust decentralized excitation control scheme is proposed to enhance the transient stability of a multi-machine power system. We employ a state model where the terminal voltage of each generator is regarded as part of the state. Using this state model, the proposed controller is obtained in two steps: firstly, a robust controller is designed for the nominal system with no interconnection terms; then an adaptive compensator is proposed to deal with those interconnection terms, whose upper bounds are estimated. The resulting adaptive scheme guarantees the practical stability of the closed-loop, and also the uniform ultimate boundedness in the presence of disturbances.