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首页> 外文期刊>Sustainable Energy, IEEE Transactions on >Evaluating the Contribution of Energy Storages to Support Large-Scale Renewable Generation in Joint Energy and Ancillary Service Markets
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Evaluating the Contribution of Energy Storages to Support Large-Scale Renewable Generation in Joint Energy and Ancillary Service Markets

机译：评估储能在联合能源和辅助服务市场中支持大规模可再生能源发电的贡献

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摘要

Energy storage systems (ESSs) are of great value to realize energy management and to support large-scale renewable generation. The combined operation of ESSs and renewables is one way to achieve output levelling and to improve the integration of sustainable energy. However, in a market-based environment, ESSs would make strategic decisions on self-schedules and arbitrage in energy and ancillary service markets, maximizing the overall profits. Will the strategic operation of ESSs promote renewable generation integration? To explicitly answer this question, this paper proposes a multi-period Nash-Cournot equilibrium model for joint energy and ancillary service markets to evaluate the contribution of the ESSs for supporting renewable generation. Then, a reformulation approach based on the potential function is proposed, which can transform the bi-level equilibrium model into an integrated single-level optimization problem to enhance the computation efficiency. Numerical examples are implemented to validate the effectiveness of the reformulation technique. The results of the case study indicate that the ESSs indirectly but substantially provide improved flexibilities while pursuing individual profit maximization.
机译：储能系统（ESS）对于实现能源管理和支持大规模可再生能源发电具有重要价值。 ESS和可再生能源的联合运营是实现产出平衡和改善可持续能源整合的一种方式。但是，在基于市场的环境中，ESS将对能源和辅助服务市场的自调度和套利做出战略决策，从而使总体利润最大化。 《环境与社会标准》的战略运作会促进可再生能源发电一体化吗？为了明确回答这个问题，本文提出了一个针对联合能源和辅助服务市场的多周期纳什古诺均衡模型，以评估能源支持系统对支持可再生能源发电的贡献。然后，提出了一种基于势函数的重构方法，该方法可以将两级平衡模型转化为集成的单级优化问题，从而提高计算效率。通过数值算例验证了重构技术的有效性。案例研究的结果表明，ESS在追求个体利润最大化的同时，间接地但实质上提供了改善的灵活性。

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