PNNL

Abstract

As increasing pressures of population growth and climate change arise, water and power systems (WPS) are becoming increasingly interdependent. This interdependency has resulted in an in-creased potential for cascading failures, whereby the service interruption of one system can propagate to its interdependent one. This paper conducts an extensive literature review in the field of integrated water and power resilience, leveraging both institutional and technical literature research landscapes. The paper compares various modeling approaches used to model interdependent WPS and discusses the different metrics and definitions that are typically employed to quantify and define resilience. Relevant challenges and gaps related to modeling tools and metrics are also discussed, and appropriate recommendations are made. In addition, the paper presents a visualization prototype for interdependent WPS to showcase power and water system interdependencies and reveal co-managed resilience strategies that can be used to improve resilience under different types of common threats. Moreover, a conceptual modeling framework is presented that allows one to simultaneously optimize a portfolio of co-managed resilience strategies to be implemented across one or both sectors in the face of multiple, uncertain threats and address the interactions between the strategies. Finally, future trends regarding digitalization, integrated planning, collaborative governance and equity are presented for building more resilient and socially fair WPS.