Water Distribution

Oral

394816 - Impacts of Operational Failures by Cyber Attacks on Water Distribution Networks

Tuesday, June 5
4:00 PM - 5:30 PM
Location: Lakeshore C
Co-Authors: Seungyub Lee, Dept. of Civil and Environmental Engineering, University of Utah, Salt Lake City, Utah – University of Utah; Dave Judi, Pacific Northwest National Laboratory, Richland, WA – Pacific Northwest National Laboratory; Timothy McPherson, Pacific Northwest National Laboratory, Richland, WA. – Pacific Northwest National Laboratory; Steven Burian, Dept. of Civil and Environmental Engineering, University of Utah, Salt Lake City, UT – University of Utah

With advances in Information & Communication Technology, cyber infrastructures to monitor and control Water Distribution Networks (WDNs) have been increasingly deployed to improve system operation efficiency, quickly detect system failures and take timely recovery actions. However, the cyber-WDNs become more vulnerable to cyber threats while they guarantee system reliability and resilience. There has been many efforts to understand impacts of cyber attacks on critical infrastructure systems and strengthen their cyber security, yet there has been less attempts to address the cyber-WDNs against the cyber threats. This study aims to analyze impacts of operational WDN failures in system functionality due to cyber attacks. First, operational failure scenarios are developed for range from attack to a single component (e.g., pump, valve, and tank) to attack to multiple components. Then, the functionalities of the failure scenarios are analyzed in the C-Town network by a pressure-driven hydraulic model based on EPANET 2.0. The functionality is defined as percentage of the amount of delivered water over required water at demand nodes. Results show that the scenarios of the attack to components for the C-Town network can induce severe water delivery losses and reduced functionality. Furthermore, it is noted that the scenarios consuming water stored in tanks for unauthorized operation require a long time to return to the pre-disrupted state. The findings contribute to estimating cyber attack-induced consequences of the WDNs for risk assessment of the cyber-WDNs and provide insights on physical-side strategies of the cyber-WDNs to cope with the cyber threats.

Sangmin Shin, PhD

Postdoctoral researcher
University of Utah

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