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Decentralized Nonlinear Voltage Control of a Multimachine Power System with Nonlinear Interconnections

  • 저자

    이재원

  • 학위수여기관

    고려대학교 대학원

  • 학위구분

    국내석사

  • 학과

    전기공학과

  • 지도교수

  • 발행년도

    2004

  • 총페이지

    ⅴ, 45p.

  • 키워드

    비선형분산전압제어 전압제어 전력계통;

  • 언어

    kor

  • 원문 URL

    http://www.riss.kr/link?id=T10070462&outLink=K  

  • 초록

    For large-scale systems which are composed of interconnections of many lower-dimensional subsystems, decentralized control is preferable since it can alleviate the computational burden, avoid communication between different subsystems, and make the control more feasible and simpler. A power system is such a large-scale system where generators are interconnected through transmission lines. Decentralized control is therefore considered for power systems. In this thesis, 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.


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