A Review on the Resilience Assessment of Power Systems under Disasters

Numerous disasters potentially influence critical infrastruc-tures of an electric power system. Generally, disasters to power systems include extreme natural disasters and artificial attacks such as high-impact/low-probability events. If a disas-ter is severe, it could cause power outages. Therefore, it is im-portant to enhance the resilience of power systems. Improving the resilience of a power system is to propose defense strate-gies, prevent voltage collapse and recover from disconnection immediately. Many countries have paid attentions to the resil-ience related issues for preventing disasters. Although resili-ence has been widely used in power systems, there is no any uniform strategy that was proposed to reduce power system risks. This paper aims to review risk assessments about vari-ous disaster types, indexes and corresponding frameworks. Moreover, this paper discusses about the reliability, availabil-ity and challenges of applying various methods to enhance power system resilience.