Fast Reassessment of Prolonged Electricity Shortages under Shared Fuel Interruptions
Dogan Urgun · arXiv: 2610.26265v1 · Summary page
Why cover this story this week?
Counting long blackouts, not just missing electricity
Two fuel-security measures can remove the same expected time without fuel while having very different consequences: preventing an interruption is not necessarily equivalent to shortening one. Conventional electricity-adequacy indices can miss that distinction. This study instead examines expected annual hours spent in shortages lasting at least a specified duration, a measure more sensitive to prolonged disruption.
The proposed method performs network calculations once and condenses them into a restoration response, allowing new interruption scenarios to be evaluated as weighted sums. An error bound checks whether that shortcut is accurate enough; otherwise, exact dynamic programming takes over. On the test system, fully accepted scenarios typically ran more than 200 times faster than exact calculation. The guarantee is relative to the exact answer on the same Monte Carlo samples—not a guarantee that the underlying model captures every real-world vulnerability.
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