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We consider the problem of minimizing costs in the generation unit commitment problem, a cornerstone in electric power system operations, while enforcing an N-k-ε reliability criterion. This reliability criterion is a generalization of the well-known N-k criterion, and dictates that at least (1 − ε j) fraction of the total system demand must be met… (More)

—We consider the problem of designing (or augmenting) an electric power system such that it satisfies the N-k-ε survivability criterion while minimizing total cost. The survivability criterion requires that at least (1 − ε) fraction of the total demand can still be met even if any k (or fewer) of the system components fail. We formulate this problem, taking… (More)