Rapid Assessment of Distribution Systems Resilience Based on Analytical Method

In recent years, extreme natural disasters have highlighted the inadequacy of traditional reliability requirements for distribution systems in facing low-probability, high-impact, large-scale failures. To address this issue, this paper presents a rapid resilience assessment method based on analytical approach for distribution systems. Commencing with the distribution system topology, this paper introduces the cell model to reduce the analysis complexity. Three kinds of indicators are utilized to describe the distribution system resilience. Using power supply paths to analyze cell response to extreme disasters at different stages, this paper obtains the analytical expressions of the assessment indicators that can be computerized. Numerical tests demonstrate the feasibility of the proposed assessment method and provide suggestions for enhancing distribution system resilience.