Hybrid solar power plant with thermochemical energy storage: A multi-objective operational optimisation
Hybrid solar power plant with thermochemical energy storage: A multi-objective operational optimisation
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DOI：
10.1016/j.enconman.2019.112421
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发表时间：
2020-02-01
影响因子：
10.4
通讯作者：
Friedrich, D.
中科院分区：
文献类型：
--
作者：
Bravo, R.;Ortiz, C.;Friedrich, D.
储能是通过减少不稳定性和增加可再生能源整合来实现能源部门脱碳的关键。热化学储能（TCES）与集中式太阳能和光伏发电厂相结合，具有提供可调度和有竞争力的能源的潜力。在这里，我们开发了一个多目标优化框架，以找到最佳的混合动力太阳能发电厂与TCES系统的操作策略。该模型使用典型的气象年来优化一年的小时运行。结果表明，在集中式太阳能发电厂中集成钙循环过程作为TCES提供了可调度性，并且当与光伏混合时，提高了其与当前电价的竞争力。供需之间的低不匹配，即使全年都需要固定的承诺，加上高的整体效率，表明在混合太阳能发电厂中整合钙循环是增加太阳能在电力部门渗透的机会。通过提出的优化框架，可以开发季节性储能分析，尽管需要第二个优化阶段来改进系统主要组件的尺寸，以进一步降低能源成本。
Energy storage is key to decarbonising the energy sector by reducing intermittency and increasing the integration of renewable energy. Thermochemical energy storage (TCES) integrated with concentrated solar and photovoltaic power plants, has the potential to provide dispatchable and competitive energy. Here we develop a multi-objective optimisation framework to find the best operational strategy of a hybrid solar power plant with a TCES system. The model uses a typical meteorological year to optimise one-year hourly operation. The results demonstrate that the integration of a calcium-looping process as TCES in a concentrated solar power plant provides dispatchability and, when hybridised with photovoltaic, enhances its competitiveness with current electricity prices. The low mismatch between supply and demand, even when a fixed commitment is required throughout the year, together with a high overall efficiency, indicates that the integration of calcium-looping in hybrid solar power plants is an opportunity to increase the penetration of solar energy in the power sector. Through the optimisation framework presented, a seasonal energy storage analysis can be developed, although a second optimisation stage is required to improve the sizing of the main components of the system in order to further reduce the energy costs.