Evaluating the Resilience of Hybrid Centralized and Decentralized Water Supply Systems
Publication: World Environmental and Water Resources Congress 2024
ABSTRACT
As urbanization accelerated and environmental challenges escalated, conventional centralized water supply systems (WSSs) have faced sustainability challenges from frequent droughts, climate change, energy security, water leaks, and aging infrastructure. Scientific communities have discussed that employing a decentralized WSS with local water sources can offer more sustainable water services in these circumstances. However, few efforts have been made to investigate the resilience of decentralized WSSs or hybrid centralized and decentralized WSSs against unexpected disruptions. This study evaluates the resilience of hybrid WSSs to physical/operational failures. First, this study defined the configuration and operations of a hybrid WSS and analyzed its hydraulic performance under failure scenarios using a pressure-driven model of EPANET 2.2. The failure scenarios included pipe leakage/burst and demand variation. Then, the resilience of the hybrid WSSs to the failure scenarios was evaluated using a surplus-energy-based resilience measure. The results demonstrated that the hybrid WSS produced larger resilience effects to disruptive events than its centralized WSS. The discussion on a resilient hybrid WSS was provided based on the resilience evaluation results. The findings will suggest engineering insights into how to configure the hybrid WSSs integrating centralized and decentralized WSSs to resiliently deal with unexpected failure events.
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World Environmental and Water Resources Congress 2024
Pages: 1316 - 1325
History
Published online: May 16, 2024
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