A Survey of Resilience Indexes in Power systems

A power system may be affected by extreme events. The probability of such an event is small, but the risk is high. Therefore, the resilience considering the impact of extreme events has been proposed to supplement the concept of traditional power system reliability analysis, and the resilience index is the key to such a evaluation system. This paper first introduces the concept of resilience; then reviews the different mathematical models used to evaluate the resilience of power system; then focuses on the analysis of different resilience indexes derived from these models and their connotations, including steady indexes and transient indexes; Finally, combined with future power system construction plan, the future for the development of resilience technology is prospected.