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Extreme weather events have a significant impact on the aging and outdatedpower distribution infrastructures. These high-impact low-probability (HILP)events often result in extended outages and loss of critical services, thus,severely affecting customers' safety. This calls for the need to ensureresilience in distribution networks by quickly restoring the critical servicesduring a disaster. This paper presents an advanced feeder restoration method torestore critical loads using distributed energy resources (DERs). A resilientrestoration approach is proposed that jointly maximizes the amount of restoredcritical loads and optimizes the restoration times by optimally allocatinggrid's available DER resources. The restoration problem is modeled as amixed-integer linear program with the objective of maximizing the resilience topost-restoration failures while simultaneously satisfying grid's criticalconnectivity and operational constraints and ensuring a radial operation for agiven open-loop feeder configuration. Simulations are performed to demonstratethe effectiveness of the proposed approach using IEEE 123-node feeder with 5DERs supplying 11 critical loads and IEEE 906-bus feeder with 3 DERs supplying17 critical loads. The impacts of DER availability and fuel reserve on restorednetworks are assessed and it is shown that the proposed approach issuccessfully able to restore a maximum number of critical loads using availableDERs.

Critical Load Restoration using Distributed Energy Resources for Resilient Power Distribution System