A comprehensive review on power system resilience: Definition, assessment, and enhancement strategies

The increasing frequency of extreme events in power systems has rendered traditional operation and control techniques ineffective during these events. This has led to the emergence of the concept of power system resilience as a key area of investigation. The literature presents a variety of definitions and metrics associated with this concept. However, misconceptions, misinterpretations, and confusion exist between resilience and other well-known concepts, including reliability and robustness. This paper provides a comprehensive review of the concept of resilience, emphasizing the need for new assessment metrics and techniques for evaluation, as well as enhancement strategies. The paper has drawn the research results and resilience works from a large number of studies to provide a holistic view of this subject. Significant efforts have been made to distinguish the concept of reliability from that of resilience. The paper has also provided a state-of-the-art review of current practices in the power and energy areas and shed light on potential directions of future studies.