Co-Optimization of Reservoir and Power Systems (COREGS) for seasonal planning and operation
Co-Optimization of Reservoir and Power Systems (COREGS) for seasonal planning and operation
复制标题
DOI：
10.1016/j.egyr.2022.06.017
复制
发表时间：
2022
期刊：
影响因子：
5.2
通讯作者：
Lucas Ford;A. D. de Queiroz;J. DeCarolis;A. Sankarasubramanian
中科院分区：
文献类型：
--
作者：
Lucas Ford;A. D. de Queiroz;J. DeCarolis;A. Sankarasubramanian
气候变化解释了电力需求和潜在流量的明显季节性差异，电力系统依靠这些来评估可用的水力发电和冷却火力发电厂。了解水库和电网在不同气候条件下的相互作用需要对这两个系统进行综合分析。在本研究中，我们开发了水库和发电系统的共同优化（COREGS），这是一个通用的、开源的建模框架，它使用多水库模型（graphs）和电力系统模型（TEMOA）来优化两个系统，以降低发电成本。将3种不同程度模型集成的优化方案应用于2003 - 2015年夏季和冬季田纳西流域管理局的水库和电力系统。我们发现，系统的协同优化比单独优化产生更有效的水分配决策。与独立的水系统优化相比，协同优化方案减少了水库溢出，只在对电力系统有利的时间和地点分配水力发电用水。随着太阳能和风能的不断普及，电力系统将更加依赖于灵活可靠的发电服务，如水库系统，这两个系统的共同优化对于有效的季节性规划和运行将变得更加重要。
Climate variability accounts for distinct seasonal differences in electricity demand and streamflow potential, which power systems rely on to assess available hydropower and to cool thermal power plants. Understanding the interactions between reservoir and power networks under varying climate conditions requires an integrated analysis of both systems. In this study, we develop Co-Optimization of Reservoir and Electricity Generation Systems (COREGS), a generalized, open-source, modeling framework that optimizes both systems with respect to reducing power generation costs using a multireservoir model (GRAPS) and an electricity system model (TEMOA). Three optimization schemes of varying degrees of model integration are applied to Tennessee Valley Authority’s reservoir and electricity systems for the summer and winters from 2003 to 2015. We find that co-optimization of the systems results in more efficient water allocation decisions than separate optimization. Co-optimization solutions reduce reservoir spill and allocate water for hydropower only when and where it is beneficial to the power system as compared to stand-alone water system optimization. As the penetration of solar and wind power continues to increase, power systems will be more reliant on flexible reliable generating services such as reservoir systems and co-optimization of both systems will become more essential for efficient seasonal planning and operation.