Transmission Adaptive Capacity-Based Resilience Metrics for Power Grid Contingency Analysis

Power system resilience generally represents the capability of the system recovering from a degraded state to normal operation in an acceptable period of time. In power systems, status changes of transmission lines are typically caused by events such as varying load, changes in non-dispatchable generation, transmission line opening, or generating power shedding. The adaptive capacity of the transmission network represents its power transmitting ability to adjust to these status changes and still meet the load demand. In this paper, we propose resilience metrics based on transmission adaptive capacity to quantitatively represent system resilience in response to events. Case studies are designed and performed in the IEEE 14-bus and 118-bus test systems using the MATPOWER platform. Simulation results demonstrate the validity of the proposed resilience metrics.