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Distribution network maintenance planning

  • US 8,799,042 B2
  • Filed: 08/08/2011
  • Issued: 08/05/2014
  • Est. Priority Date: 08/08/2011
  • Status: Expired due to Fees
First Claim
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1. A method for maintaining an infrastructure of components, the method comprising:

  • receiving, by a processor device, structured data, unstructured data, and infrastructure data from a database;

    running, by said processor device, at least one statistical and optimization modeler with one or more of;

    the received structured data, the received unstructured data and the received infrastructure data, in order to calculate a health index of at least one component of the infrastructure, the health index representing a health attribute of the at least one component, the calculation of the health index of the at least one component of the infrastructure including;

    HI (health index)=−

    (F×

    R+W)×

    1, where F is a vector representing failure probabilities of the at least one component in the infrastructure, R represents a spatial correlation value of the at least one component and the W represents a time elapsed since a last maintenance of the at least one component, and 1 represents a vector of ones, wherein the vector F is a function of λ

    exp (Σ

    i=1kβ

    iZi), where λ

    is any positive real number, Zi is a covariate, i is an index, k is a maximum number of the index, and β

    i is a variable representing one or more of;

    an age of the at least one component, a diameter of the at least one component, a length of the at least one component, a number of previous failures of the at least one component;

    establishing at least one maintenance plan of the infrastructure, based on the calculated health index, each established maintenance plan being associated with at least one health index;

    comparing health indices of the at least one established maintenance plan; and

    selecting a plan, among the at least one established maintenance plan, whose health index is a maximum among the compared health indices,wherein a computing system including at least one memory device and said processor device performs the establishing, the comparing, and the selecting.

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