The water-energy nexus at water supply and its implications on the integrated water and energy management
The water-energy nexus at water supply and its implications on the integrated water and energy management
复制标题
供水中的水-能源关系及其对水和能源综合管理的影响
DOI：
10.1016/j.scitotenv.2018.04.408
复制
发表时间：
2018
影响因子：
9.8
通讯作者：
Mo, Weiwei
中科院分区：
文献类型：
--
作者：
Khalkhali, Masoumeh;Westphal, Kirk;Mo, Weiwei
在现代世界中，水和能源是高度相互依存的，因此，了解它们不断变化和非线性的相互关系对水和能源的综合管理很重要。本研究建立了水文模型、水系统模型和能量模型，并将其整合到系统动力学建模框架中。然后将该框架应用于美国东北部的供水系统，以捕捉在一系列未来人口、气候和系统运行情景下的水-能相互作用。首先利用水文模型模拟了在温度和降水变化的周周期下系统的水文流入和流出。然后，开发了将水文模型与管理规则（例如水的释放和转移）相结合的水系统模型，以动态模拟系统的储水量和水头。从水系统模型的输出被用于能源模型来估计水力发电。研究发现，关键的水-能协同效应和权衡存在，水-能综合管理有可能取得更好的结果。该分析还显示了对系统整体理解的重要性，这将允许公用事业管理者做出前瞻性的长期管理决策。该建模框架可推广到其他具有水力发电能力的供水系统，为水资源和能源的综合管理提供信息。
Water and energy are highly interdependent in the modern world, and hence, it is important to understand their constantly changing and nonlinear interconnections to inform the integrated management of water and energy. In this study, a hydrologic model, a water systems model, and an energy model were developed and integrated into a system dynamics modeling framework. This framework was then applied to a water supply system in the northeast US to capture its water-energy interactions under a set of future population, climate, and system operation scenarios. A hydrologic model was first used to simulate the system's hydrologic inflows and outflows under temperature and precipitation changes on a weekly-basis. A water systems model that combines the hydrologic model and management rules (e.g., water release and transfer) was then developed to dynamically simulate the system's water storage and water head. Outputs from the water systems model were used in the energy model to estimate hydropower generation. It was found that critical water-energy synergies and tradeoffs exist, and there is a possibility for integrated water and energy management to achieve better outcomes. This analysis also shows the importance of a holistic understanding of the systems as a whole, which would allow utility managers to make proactive long-term management decisions. The modeling framework is generalizable to other water supply systems with hydropower generation capacities to inform the integrated management of water and energy resources.