Risk and Resiliency Assessments of Renewable Dominated Edge of Grid Under High-Impact Low-Probability Events -A Review

Low-probability high-impact (HILP) events such as windstorms, earthquakes, wildfires, and floods, which can cause significant damages to power systems, are inevitable and unpredictable. Besides, uncertainties from distributed renewable energy resources may prevent conventional techniques to improve reliability of power grids. In previous research works, several strategies have been introduced to investigate risk and resiliency, and to find effective solutions to improve system reliability under such extreme events. In this paper, a critical review of these strategies is presented. Modelings of the HILP events are dis-cussed. In the conclusion, this paper pinpoints significant findings and give directions for robustly protecting power systems.