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Economic viability of pumped-storage power plants participating in the secondary regulation service

机译：参与二次调节服务的抽水蓄能电站的经济可行性

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摘要

This paper analyses the economic viability of twelve pumped-storage hydropower plants equipped with different fixed-speed and variable-speed units and with and without considering hydraulic short-circuit operation. The analysed plants are assumed to participate in the day-ahead energy market and in the secondary regulation service of the Iberian power system. A deterministic day-ahead energy and reserve scheduling model is used to estimate the maximum theoretical income of the plants assuming perfect information of the next day prices, the residual demand curves of the secondary regulation reserve market and the percentages of the real-time use of the committed reserves. An estimate of the minimum theoretical pay-back period is obtained from the maximum theoretical income as a result of the scheduling model. Results indicate that the economic viability with and without variable speed units and operating or not in hydraulic short-circuit mode is not discarded if the plants also participate in the secondary regulation service, and that the minimum theoretical pay-back periods can be reduced significantly when the plant is equipped with variable speed units and/or operates in hydraulic short-circuit mode. In addition, the maximum theoretical income obtained with the used optimization model and the proposed pumped-storage hydropower plants are significantly higher than the real income obtained by plants that are currently operating in the Iberian system.
机译：本文分析了十二家抽水蓄能电站的经济可行性，这些抽水蓄能电站配备了不同的定速和变速装置，并且考虑或不考虑液压短路运行。假设分析后的电厂参与了日前的能源市场和伊比利亚电力系统的二次调节服务。在确定第二天价格，二级监管储备市场的剩余需求曲线以及实时使用百分比的完美信息的基础上，使用确定性的日前能源和储备调度模型估算工厂的最大理论收入。承诺的储备金。作为调度模型的结果，可以从最大理论收入中获得最小理论投资回收期的估算值。结果表明，如果工厂也参与二级调节服务，则无论有无变速单元以及是否在液压短路模式下运行或不运行，其经济可行性都不会被丢弃，并且当该工厂配备有变速单元和/或在液压短路模式下运行。此外，通过使用的优化模型和拟议中的抽水蓄能电站获得的最大理论收益显着高于当前在伊比利亚系统中运行的电厂获得的实际收益。

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