Review of performance studies on electric power grids under seismic hazards-with a focus on resilience perspective

Electric power grids play an important role in the smooth functioning of modern society as many essential services required in our daily life depend on the electricity. Many cities in China are located in the earthquake-prone regions. If an earthquake occurs, it may cause extensive damage to power facilities and lead to a blackout, which will further affect electricity-depended critical services and result in huge economic loss. The seismic performance studies on electric power grids in the literature have been extensively reviewed from four aspects: seismic scenario generation, component fragility modeling, system-level functionality simulation, and seismic performance ssessment and enhancement. Note that the performance of electric power grids can be measured from different perspectives , such as vulnerability, reliability and risk, this review has been mainly conducted from the resilience perspective. Finally, existing problems in the literature have been concluded and several directions for future work have been also provided.