Toward a globally robust decentralized control for large-scale power systems

    Authors

    H. B. Jiang; H. Z. Cai; J. F. Dorsey;Z. H. Qu

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Control Syst. Technol.

    Keywords

    control; Lyapunov direct method; power system; robust control; stability; steady state; Automation & Control Systems; Engineering, Electrical & Electronic

    Abstract

    A robust control scheme is presented that stabilizes a nonlinear model of a power system to a very large class of disturbances that includes any disturbances causing the system to exhibit sustained oscillation, The disturbance can be anywhere in the power system, The fact that the improvement in stability is significant and system wide leads to the name globally robust control, The control is local or decentralized in the sense that the control of each generator depends only on information available at that generator, and is derived using Lyapunov's direct method, The derivation is quite general, permitting a second-order representation of the turbine/governor and any generator model, Simulation results are presented which show the effectiveness of the proposed control against instabilities of current importance including sustained oscillations following a major system disturbance such as a fault or major line outage, The control is also effective for steady-state operation.

    Journal Title

    Ieee Transactions on Control Systems Technology

    Volume

    5

    Issue/Number

    3

    Publication Date

    1-1-1997

    Document Type

    Article

    Language

    English

    First Page

    309

    Last Page

    319

    WOS Identifier

    WOS:A1997WV83200004

    ISSN

    1063-6536

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