Resilience Modeling and Simulation of Smart Grids

This paper proposes a three-stage framework to analyze the smart grid resilience. In each stage, a series of resilience improvement strategies are introduced to realize the smart grids, and appropriate metrics are also identified and then combined to establish an annual resilience metric. Taking the power transmission grid in Harris County, Texas USA as case study, this paper establishes an original power grid model and several smart grid models to compare the effectiveness of resilience improvement strategies in different stages. Results show that the annual resilience of the smart grid with all three-stage improvements increases 0.035% compared to the original grid. Although the improvement is small in magnitude due to the high reliability of real power grids, it may save hundreds of millions of dollars. This framework can provide insights to design resilient smart infrastructure systems and retrofit present ones.