Safety Screening for Voltage Control in Active Distribution Grids via Distributionally Robust Conformal Screening

The paper introduces Distributionally Robust Conformal Safety Screening (DR‑CSS), a policy‑agnostic framework that uses historical data and a nominal simulator to pre‑deploy safety checks for new voltage control policies in active distribution grids. DR‑CSS constructs conformal safety intervals around simulated voltage trajectories, enlarging them to account for closed‑loop effects of the new policy. Experiments on IEEE 33‑bus and 141‑bus systems show that DR‑CSS successfully identifies all unsafe scenarios while adapting intervals to reduce false warnings.

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• safety