Selection of post-disruption recovery strategy for resilience

Managing disruptive events at the operating phase of an engineered system therefore improving the system’s failure resilience is an importance yet challenging task in system operation. For complex network system, with different disruption scenarios, the resilience can be improved by enhancing the failure restoration capability of the system with appropriate system recovery strategies. Specifically, for power distribution system, practical recovery methods include but not limit to, rerouting transmission lines, optimal recovery sequencing and distributed energy resource (DER). With all those recovery strategies, considering different characteristics of disruptive events and their impacts to the performance of a system, effective recovery strategies for the failure restoration must be selected correspondingly. However, the challenge is to develop generally applicable principles for selecting effective recovery methods thus achieving the desirable failure restorations. In this study, an analysis of different recovery strategies for power system is conducted with the focus on the effectiveness of restoring system performance after the system has undergone disruptive events. A generic framework is proposed for decision maker to assign recovery plans. A case study of an electricity transmission system is used to demonstrate the feasibility of the formulation of the recovery process.