Strategies for Achieving Community Resilience Under Extreme Weather
A Reconfigurable Time-Sharing Community Microgrid with PV+Storage
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In recent years, extreme weather events such as hurricanes have had a significant impact on power systems. Low-income communities are especially vulnerable due to the high costs of enhancing system resilience. Traditional solutions like reinforcing poles or installing underground cables, while effective, are often too expensive for these communities. As a result, they face prolonged isolation and darkness during outages until the system is restored. The increasing frequency of extreme weather has made the resilience of distribution power systems more crucial, emphasizing the need for more affordable and equitable solutions to ensure grid stability for all communities.
Time-Sharing Resilience Strategy
A time-sharing framework has been developed to improve the resilience of power distribution systems in low-income communities during extreme weather events. This framework optimizes the allocation of distributed energy resources (DERs) and reclosers to sequentially energize different segments of the distribution system, thereby reducing the capital costs associated with enhancing resilience. The team has formulated this problem as a mixed-integer linear programming (MILP) challenge and has proposed two key algorithms: one for optimal recloser placement and another for DER selection based on budget constraints.
By applying this framework to a modified IEEE 33-bus distribution system, the study shows that this approach can enhance resilience during outages while staying within limited community budgets. The framework provides a practical and economically feasible solution for vulnerable communities, offering a strategic way to improve energy resilience through efficient system reconfiguration and resource planning.
Figure 1. A time-sharing solution for the IEEE 33-bus distribution system
2. Community Center with PV + BESS Providing Resilience
PV+Storage is investigated by considering at a community center (CC) equipped with photovoltaic (PV) systems and battery energy storage systems (BESS) in a synthetic distribution network corresponding to a community in Orlando. By strategically placing reclosers within the radial network, their Time-Sharing Resilience Strategy ensures equitable power distribution among network clusters, adjusting service times based on real-time solar irradiance. The study highlights the benefits of PV integration, showing that it improves grid resilience compared to battery-only systems under various solar conditions.
This framework provides practical guidance for utilities and community planners aiming to enhance power system resilience in the face of increasing extreme weather events. The study is a resource for those focused on sustainable energy solutions and community-level resilience planning, offering a clear methodology and real-world case studies that demonstrate the effectiveness of these strategies.
Figure 2. TSRS implementation with PV+BESS integrated at the CC
Figure 3. Resilience duration across two days at varying irradiance levels and PV panel sizes (each block represents one day)
3. Optimal Solution with Equity under Consideration
--Ongoing
Team Member
Prof. Zhihua Qu
Dr. Bo Tu
Kenneth McDonald
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