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Cut set-based risk and reliability analysis for arbitrarily interconnected networks

United States Patent

6,125,453
September 26, 2000
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
Method for computing all-terminal reliability for arbitrarily interconnected networks such as the United States public switched telephone network. The method includes an efficient search algorithm to generate minimal cut sets for nonhierarchical networks directly from the network connectivity diagram. Efficiency of the search algorithm stems in part from its basis on only link failures. The method also includes a novel quantification scheme that likewise reduces computational effort associated with assessing network reliability based on traditional risk importance measures. Vast reductions in computational effort are realized since combinatorial expansion and subsequent Boolean reduction steps are eliminated through analysis of network segmentations using a technique of assuming node failures to occur on only one side of a break in the network, and repeating the technique for all minimal cut sets generated with the search algorithm. The method functions equally well for planar and non-planar networks.
Wyss; Gregory D. (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
09/ 109,236
June 30, 1998
GOVERNMENT RIGHTS The United States Government has rights in this invention pursuant to Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy.