| Title |
Robustness Estimation for Power and Water Supply Network : in the Context of Failure Propagation |
| Authors |
Lee, Seulbi ; Park, Moonseo ; Lee, Hyun-Soo |
| DOI |
http://dx.doi.org/10.6106/KJCEM.2018.19.3.033 |
| Keywords |
Lifeline system ; Network robustness ; Failure Propagation |
| Abstract |
In the aftermath of an earthquake, seismic-damaged infrastructure systems loss estimation is the first step for the disaster response. However, lifeline systems' ability to supply service can be volatile by external factors such as disturbances of nearby facilities, and not by own physical issue. Thus, this research develops the bayesian model for probabilistic inference on common-cause and cascading failure of seismic-damaged lifeline systems. In addition, the authors present network robustness estimation metrics in the context of failure propagation. In order to quantify the functional loss and observe the effect of the mitigation plan, power and water supply system in Daegu-Gyeongbuk in South Korea is selected as case network. The simulation results show that reduction of cascading failure probability allows withstanding the external disruptions from a perspective of the robustness improvement. This research enhances the comprehensive understanding of how a single failure propagates to whole lifeline system performance and affected region after an earthquake. |