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

Operational resilience metrics for power systems with penetration of renewable resources

“…where S ijBase is the rated capacity of the branch and S ij is the actual power on the branch from Bus i to Bus j. The marginal capacity percentage metric is calculated by (15).…”

“…The adaptive capacity of a transmission network represents its power transmitting ability to adjust to status changes and still meet the load demand [15]. The resilience metrics is based on transmission adaptive capacity to quantitatively represent system resilience in response to disturbance events.…”

“…To address this concern, resilience metrics for power systems are needed to evaluate the system's ability to prevent, withstand, adapt to, and quickly recover from disruptive events [8][9][10][11]. Conventionally, evaluation models for power system are constructed to evaluate the unbalanced and unstable operation status in transient and steady states separately [12][13][14][15], and strategies are proposed to mitigate operational state in post-event period [16][17][18][19][20][21][22]. Therefore, it is necessary to construct a framework to evaluate system resilience in various time scales, and provide effective strategies to improve the operating performance during the whole event period.…”

“…As more renewable energy generation is connected, power systems are likely to operate near their security boundaries due to renewable energy resources affected by extreme weather. A set of power system resilience metrics is proposed in [15] to quantify the marginal capacity percentage of transmission systems. The transmission resilience is only discussed in steady‐state analysis, but has not been considered during transient periods.…”