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A Framework to Quantify the Value of Operational Resilience for Electric Power Distribution Systems

Abstract:  Resilience to the high impact low probability (HILP) events due to extreme weather events is increasingly becoming critical for electric power distribution systems. It is essential to enhance the distribution system’s resilience through appropriate operational planing measures such as infrastructure hardening and advanced restoration. Planning distribution system resilience calls for a quantitative metric that can not only model the impacts of non-deterministic catastrophic events but also evaluate the value of the services provided by different planning measures. This paper proposes a resilience metric that quantifies the value of operational resilience of distribution systems in terms of cost of customer interruption. A Monte Carlo based simulation framework is developed to model the probabilistic damage scenarios and to evaluate the resilience metric for different weather intensities. The proposed framework is demonstrated using IEEE 123- bus system.