The phrase water-energy nexus is commonly used to describe the inherent and critical interdependencies between the electric power system and the water delivery system (WDS). In this work, an analytical framework capturing the interactions between these two critical infrastructures is examined and a mathematical model to describe the associated dynamics is developed. Based on the time-scale of the associated dynamics, the electric network behavior is represented using time-series power flows following unit commitment and optimal power flow solutions. The WDS is represented using continuity equations at the delivery junction nodes and energy equations around the delivery loops and from tanks and reservoirs to the network. An integrated simulation engine of the interdependent infrastructure systems is formulated to conduct long-term simulations. Test cases have been conducted to show the impact of mega droughts and electric supply disruptions on the two interdependent systems.
Prof. Vijay Vittal is the Ira A. Fulton Chaired Professer in the School of Electrical, Computer and Energy Engineering at Arizona State University. He is the director of Power System Engineering Research Center, headquartered at ASU. He is also an IEEE fellow as well as a member of the National Academy of Engineering. From 1993 to 1994, he served as the program director of power systems for the NSF Division of Electrical and Communication Systems in Washington, D.C. He was the editor-in-chief of the IEEE Transactions on Power Systems from 2005 to 2011. Vittal has published over 190 articles in refereed journals, 133 refereed conference proceeding articles, twelve books and book chapters, and 13 research and technical reports. His research interests lie in the areas of power system dynamics and control, nonlinear systems, computational science and modeling and simulation. His publications have garnered over 11000 citations as well as several awards.