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  • Extended set-membership filter for power system dynamic state estimation

    Author(s)
    Qing, Xiangyun
    Yang, Fuwen
    Wang, Xingyu
    Griffith University Author(s)
    Yang, Fuwen
    Year published
    2013
    Metadata
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    Abstract
    A new method for power system dynamic state estimation is presented. It is based on the application of the extended set-membership filter (ESMF). The ESMF provides an on-line nonlinear guaranteed estimation that assumes that noise sources are unknown but bounded, rather than stochastic as in probabilistic estimation algorithms such as the extended Kalman filter (EKF) and the unscented Kalman filter (UKF). Thus, the ESMF provides 100% confidence to the estimated states for the safety and reliability of power systems. In this paper, the ESMF is derived and demonstrated by using two different single machine infinite bus (SMIB) ...
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    A new method for power system dynamic state estimation is presented. It is based on the application of the extended set-membership filter (ESMF). The ESMF provides an on-line nonlinear guaranteed estimation that assumes that noise sources are unknown but bounded, rather than stochastic as in probabilistic estimation algorithms such as the extended Kalman filter (EKF) and the unscented Kalman filter (UKF). Thus, the ESMF provides 100% confidence to the estimated states for the safety and reliability of power systems. In this paper, the ESMF is derived and demonstrated by using two different single machine infinite bus (SMIB) systems. The performance of the ESMF is compared with the classical UKF by using one SMIB system modeled as a second-order nonlinear dynamic equation. The feasibility of the ESMF method with unknown inputs is also presented on the other SMIB system, in which the exciter output voltage may be unavailable but bounded. The ESMF method is also tested on a multi-machine system model to demonstrate its effectiveness.
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    Journal Title
    Electric Power Systems Research
    Volume
    99
    DOI
    https://doi.org/10.1016/j.epsr.2013.02.002
    Subject
    Electrical and Electronic Engineering not elsewhere classified
    Electrical and Electronic Engineering
    Publication URI
    http://hdl.handle.net/10072/173446
    Collection
    • Journal articles

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