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Quantifying the revenue gain of operating a cascade hydropower plant system as a pumped-storage hydropower system
Renewable Energy ( IF 9.0 ) Pub Date : 2019-08-01 , DOI: 10.1016/j.renene.2019.02.118
Mümtaz Ak , Elcin Kentel , Secil Savasaneril

Abstract Pumped-storage hydropower is one of the most viable large-scale energy storage options. When managed optimally, pumped-storage hydropower may also bring monetary benefits due to price variations in the electricity market. Two main concerns are the lack of suitable sites and potential environmental impacts, which can be alleviated by using already existing, closely situated reservoirs. The goal of this study is to develop operating strategies for cascade pumped-storage hydropower systems composed of already existing hydropower plants. Main challenges are the treatment of the stochastic behavior of inflows and hourly electricity price variations. In this study, monthly historical inflows are used as inputs to generate operating rule curves. Based on past electricity prices, a scenario-based approach is developed to reflect the uncertainty in electricity price variations. Combining the two approaches, nonlinear mathematical models are constructed to obtain average annual revenues for cascade hydropower plants and the pumped-storage hydropower systems. The models are solved for the cascade multi-reservoir system in Coruh Basin of Turkey for five different scenarios based on electricity prices for years 2013–2017. The revenue gain ranged between 2.9% and 10.4%. It is concluded that operation of the cascade hydropower plant system in the pumped-storage mode brings additional revenue.

中文翻译:

量化将梯级水电站系统作为抽水蓄能电站系统运行的收入收益

摘要 抽水蓄能水电是最可行的大规模储能方式之一。如果管理得当,抽水蓄能水电还可能因电力市场的价格波动而带来货币收益。两个主要问题是缺乏合适的地点和潜在的环境影响,这可以通过使用现有的、位置较近的水库来缓解。本研究的目标是为由现有水电站组成的梯级抽水蓄能水电系统制定运行策略。主要挑战是处理流入和每小时电价变化的随机行为。在这项研究中,每月的历史流入量被用作生成操作规则曲线的输入。根据以往的电价,开发了一种基于情景的方法来反映电价变化的不确定性。结合这两种方法,构建非线性数学模型以获得梯级水电站和抽水蓄能水电系统的平均年收入。根据 2013-2017 年的电价,针对土耳其 Coruh 盆地的梯级多水库系统在五种不同场景中求解了模型。收入增幅介于 2.9% 至 10.4% 之间。结论是,以抽水蓄能模式运行梯级水电站系统会带来额外的收入。根据 2013-2017 年的电价,针对土耳其 Coruh 盆地的梯级多水库系统在五种不同场景中求解了模型。收入增幅介于 2.9% 至 10.4% 之间。结论是,以抽水蓄能模式运行梯级水电站系统会带来额外的收入。根据 2013-2017 年的电价,针对土耳其 Coruh 盆地的梯级多水库系统在五种不同场景中求解了模型。收入增幅介于 2.9% 至 10.4% 之间。结论是,以抽水蓄能模式运行梯级水电站系统会带来额外的收入。
更新日期:2019-08-01
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