Bulletin of the American Physical Society
APS March Meeting 2015
Volume 60, Number 1
Monday–Friday, March 2–6, 2015; San Antonio, Texas
Session T3: Invited Session: Network and Grid Resilience |
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Sponsoring Units: FPS GSNP Chair: Micah Lowenthal, National Academy of Science Room: 002AB |
Thursday, March 5, 2015 11:15AM - 11:51AM |
T3.00001: Electric Distribution Grid Resilience R{\&}D by the U.S. DOE Invited Speaker: Dan Ton The U.S. Department of Energy's Smart Grid Research and Development Program is undertaking R{\&}D to modernize the distribution portion of the electricity delivery system. Key characteristics of a modernized electric distribution grid include reliability, efficiency, affordability, flexibility, and resilience of electricity delivery for all end uses. To address resilience, the Program has established a focused R{\&}D area in FY15 aiming to reduce social consequences (economic, safety, and security) from extreme weather threats. This focus area was developed as the result of an established process in which the Program engaged national labs, universities, utilities, and other industry stakeholders to jointly envision the future state of a resilient grid, to identify R{\&}D areas and activities of priority, and to define performance metrics and associated targets. This presentation will cover the development of the electric distribution grid R{\&}D focus area to date, including its key elements in resilience metrics, enhanced system designs, improved preparedness and mitigation measures, and improved system response and recovery. Key findings from a stakeholder workshop and the year-one Quadrennial Energy Review (QER) report by federal agencies will be summarily presented. Further, examples of ongoing projects in this focus area supported by the Program will be featured. The presentation will conclude with highlighting some key activities planned by the Program for the near future. [Preview Abstract] |
Thursday, March 5, 2015 11:51AM - 12:27PM |
T3.00002: Designing Resilient Electrical Distribution Grids---R{\&}D Challenges Invited Speaker: Scott Backhaus Natural disaster such earthquakes, hurricanes, and other extreme weather pose serious risks to modern critical infrastructure including electrical distribution grids, as evidenced by recent events like Superstorm Sandy. To improve resilience to these events, recent U.S. government studies suggest that component and system-level hardening and resilience upgrades are needed, including adding redundant circuit segments, hardening transformers and other exposed components, adding switching and microgrid generation for flexibility. All of these upgrades are expensive. New methods are needed to design cost-efficient, high-performance combinations of upgrades. A network-centric resilience design approach is described and used to highlight several areas in need of fundamental research to improve the functionality of this and related resilience design tools. [Preview Abstract] |
Thursday, March 5, 2015 12:27PM - 1:03PM |
T3.00003: Resiliency of Distribution Systems: State-of-the-Art and the Future Invited Speaker: Chen-Ching Liu Recent development of the smart grid significantly enhanced the level of automation in the distribution grids. With a higher level deployment of remote-controlled switches, distribution feeders can be restored more efficiently after power outages. In this presentation, computational algorithms for feeder restoration will be summarized together with their practical implementations. The traditional analytical techniques, however, are not designed for extreme events in the distribution systems. The same is true for widely adopted reliability indices. New thinking of design and operation for resilient distribution systems will be important. Resiliency for a power distribution system depends not only on the electrical and communication connectivity but also the availability and physical capability of the distribution systems to deliver power. The physical behavior of the distribution systems during an extreme operating condition will be discussed. This presentation will cover technical methods and open research issues related to resilient distribution systems. Simulation results using a 4-feeder 1069-node test system with microgrids will be used to validate the feasibility of the proposed methods. [Preview Abstract] |
Thursday, March 5, 2015 1:03PM - 1:39PM |
T3.00004: Resilience of Large-Scale Power Distribution: Modeling and Real Data Invited Speaker: Chuanyi Ji Severe weather events are extreme but realistic scenarios of large-scale disruptions to power distribution, the last mile of our energy infrastructure. The impact of severe weather is significant: Each major disruption previously occurred caused power failures to millions of customers in large geographical areas for extended durations. A resilient power grid is called for in the nation, which poses a numerous fundamental questions. For example, how to quantify the resilience? How resilient is large-scale power distribution to severe weather? In this talk, we first discuss technical challenges for quantifying residence that involve heterogeneous factors from power distribution to services. We then show that these factors can be modeled, in a network setting, through spatial-temporal random processes. A dynamic resilience metric is then derived from the model. The model and the metric guide us to learn resilience from real data. We will present a study, using large-scale real data on failures and recoveries, to understand how resilient power distribution is to a severe-weather disruption. Joint work with Yun Wei and Henry Mei (Georgia Tech), in collaboration with utilities and policy makers, and supported by NYSERDA. [Preview Abstract] |
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