Damage Propagation from Component Level to System Level in the Electricity Sector
- 주제(키워드) Electricity sector , Power system , Functionality , Earthquake , Input-output inoperability , Agent-based simulation
- 주제(기타) Engineering, Civil
- 설명문(일반) [Lee, Seulbi; Park, Moonseo; Lee, Hyun-Soo] Seoul Natl Univ, Dept Architecture & Architectural Engn, 1 Gwanak Ro, Seoul 08826, South Korea; [Hwang, Sungjoo] Ewha Womans Univ, Dept Architectural & Urban Syst Engn, 52 Ewhayeodae Gil, Seoul 120750, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 ASCE-AMER SOC CIVIL ENGINEERS
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000151882
- 본문언어 영어
- Published As http://dx.doi.org/10.1061/(ASCE)IS.1943-555X.0000437
초록/요약
In the aftermath of an earthquake, the electric power supply system may have a reduced ability to maintain its intended function, leading to service disruptions of other interdependent facilities until the electricity sector gets restored. In order to analyze such extra functionality losses, the authors have developed an agent-based inoperability input-output model with a focus on damage propagation from a component level to a system level in the electricity sector. In addition, this research presents the probabilistic matrix for the quantification of correlation coefficients between two connected electricity sector components (e.g.,power generator and deliverer) and uses these coefficients to identify critical components from a perspective of the network's reliability. The developed model thus allows us to understand how a degradation of component affects the functionality of the whole electricity sector. To demonstrate the model's analytic capability, this research conducted case simulations using the data from 2011 Tohoku earthquake. The simulation results show that the impact of seismic damage in a network is generally underestimated because there is unforeseen damage propagation from the component to the system level. Moreover, the results demonstrate that demand-side efforts to conserve electricity usage and restoration priority setting in accordance with component criticality are crucial to ensure community resilience in case of disaster.
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