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    Assessing the Seismic Resilience of Power Grid Systems Considering the Component Deterioration and Correlation

    Source: ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg:;2020:;volume( 006 ):;issue: 002
    Author:
    Wang, Cao
    ,
    Zhang, Hao
    DOI: 10.1115/1.4046394
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Electricity transmission systems are essential to a community's functionalities but are susceptible to the aggressive environmental or operational factors such as the natural hazards and the environment-induced component deterioration during their service life. The service reliability of a power grid system shall be assessed under a probability-based framework taking into account the spatial uncertainty and correlation arising from both the component performance (i.e., plants, substations, and transmission lines) and the load effects. This paper estimates the resilience of a power grid system in the presence of the impacts of component deterioration and correlation, with an emphasis on the earthquake excitation hazards. The spatial variability of the component capacity and that associated with the earthquake ground motion are modeled by the Gaussian copula function. A posthazard performance indicator (PPI) is used to represent the seismic vulnerability of a grid system subjected to earthquake actions. With this, the statistics (mean value and variance) of the PPI conditional on the occurrence of an earthquake is estimated by a simulation-based method, and the resilience of the grid system (measured by a resilience index based on the recovery process of PPI) is assessed in a closed-form. The applicability of the proposed method is demonstrated through the seismic resilience assessment of an illustrative grid system.
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      Assessing the Seismic Resilience of Power Grid Systems Considering the Component Deterioration and Correlation

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    • ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering

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    contributor authorWang, Cao
    contributor authorZhang, Hao
    date accessioned2022-02-04T14:12:16Z
    date available2022-02-04T14:12:16Z
    date copyright2020/03/27/
    date issued2020
    identifier issn2332-9017
    identifier otherrisk_006_02_020903.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4273175
    description abstractElectricity transmission systems are essential to a community's functionalities but are susceptible to the aggressive environmental or operational factors such as the natural hazards and the environment-induced component deterioration during their service life. The service reliability of a power grid system shall be assessed under a probability-based framework taking into account the spatial uncertainty and correlation arising from both the component performance (i.e., plants, substations, and transmission lines) and the load effects. This paper estimates the resilience of a power grid system in the presence of the impacts of component deterioration and correlation, with an emphasis on the earthquake excitation hazards. The spatial variability of the component capacity and that associated with the earthquake ground motion are modeled by the Gaussian copula function. A posthazard performance indicator (PPI) is used to represent the seismic vulnerability of a grid system subjected to earthquake actions. With this, the statistics (mean value and variance) of the PPI conditional on the occurrence of an earthquake is estimated by a simulation-based method, and the resilience of the grid system (measured by a resilience index based on the recovery process of PPI) is assessed in a closed-form. The applicability of the proposed method is demonstrated through the seismic resilience assessment of an illustrative grid system.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAssessing the Seismic Resilience of Power Grid Systems Considering the Component Deterioration and Correlation
    typeJournal Paper
    journal volume6
    journal issue2
    journal titleASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg
    identifier doi10.1115/1.4046394
    page20903
    treeASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg:;2020:;volume( 006 ):;issue: 002
    contenttypeFulltext
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