“水能关系”通常用于描述电力系统与供水系统（WDS）之间固有的关键依赖性。本次讲座将会介绍针对这两个关键基础设施之间作用关系的分析框架，并提出描述相应动态过程的数学模型。基于相关动态过程的时间尺度，电力网行为由求解机组组合与最优潮流之后的潮流时间序列来表征，而供水网则由连接节点处的连续性方程，以及从水库、储罐到网络输送回路的能量方程表征。两个基础设施系统的集成仿真引擎已被构建来实现长时间尺度的系统仿真，在此基础上相关算例已经完成来说明大型干旱与电力供应终端对这两个互联系统的影响。

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.