The value of thermochemical storage for concentrated solar power plants: Economic and technical conditions of power plants profitability on spot markets
The value of thermochemical storage for concentrated solar power plants: Economic and technical conditions of power plants profitability on spot markets
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DOI：
10.1016/j.enconman.2018.11.082
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发表时间：
2019-01
影响因子：
10.4
通讯作者：
E. Tapachès;D. Salas;M. Perier-Muzet;S. Mauran;D. Aussel;N. Mazet
中科院分区：
文献类型：
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作者：
E. Tapachès;D. Salas;M. Perier-Muzet;S. Mauran;D. Aussel;N. Mazet
本文探讨了两个新的范例，通过研究的技术经济相关性的聚光太阳能发电厂在现货电力市场，涉及强烈的价格变化，并通过调查的整合，创新的热存储在这样的工厂进行热化学过程。其目的是同时优化存储的物理特性和工厂的操作（结合生产/存储/排放阶段）。该方法是基于工厂运行的预情景，和净现值作为优化标准。结果表明，原始方案涉及一个或两个放电阶段（根据天，季节，太阳能倍数，或位置）具有更高的收入和存储的能量比经典的场景（i.e.one日落时放电）。然而，这些收入在现货市场太低，导致负净现值。因此，这种发电厂需要补贴，这里估计为12欧元/兆瓦时（取决于案例研究），这比传统的统一上网电价低得多。
This paper explores two new paradigms by studying the techno-economic relevance of a concentrated solar power plant in spot electricity markets involving strong price variations, and by investigating the integration of an innovative thermal storage performed by a thermochemical process in such plant. Its aim is to optimize simultaneously the physical characteristics of the storage and the operation of the plant (combining production/storage/discharge phases). The methodology is based on pre-scenarios for the plant operation, and net present value as optimization criteria. The results show original scenarios involving one or two discharge phases (according to day, season, solar multiple, or location) with higher revenues and stored energies than the classical scenario (i.e.one discharge at sunset). Nevertheless, these revenues in the spot market are too low, leading to negative net present values. Thus, such power plant requires subsidies, that are here estimated from 12 €/MWhe (depending on case study), which are much lower than classical flat feed-in tariffs.