考虑未使用容量共享的储能系统优化调度策略

IF 1.9 Q4 ENERGY & FUELS

Global Energy Interconnection Pub Date : 2024-10-01 DOI:10.1016/j.gloei.2024.10.008

Hejun Yang , Zhaochen Yang , Siyang Liu , Dabo Zhang , Yun Yu

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引用次数: 0

摘要

在可再生能源系统中，储能系统可以减少可再生能源的功率波动，补偿预测偏差。然而，如果可再生能源预测偏差较小，储能系统可能会处于未充分利用状态。为了有效利用可再生能源侧储能系统（RES），本研究提出了一种考虑未使用容量共享的储能系统优化调度策略。首先，本研究提出了可再生能源储能系统的闲置容量共享策略，以充分利用储能系统的闲置容量，提高储能系统的服务效率。其次，将可再生能源分为 "偏差补偿储能（DES）"和 "共享储能（SES）"，以明确可再生能源在运行过程中的作用。第三，本研究建立了一个优化的调度模型，以实现最低的系统运行成本，其中可将闲置容量共享策略纳入其中。最后，进行了案例研究，结果表明所提出的模型和算法有效提高了可再生能源侧储能系统的利用率，从而降低了总运行成本和削峰压力。

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Optimization dispatching strategy for an energy storage system considering its unused capacity sharing

In renewable energy systems, energy storage systems can reduce the power fluctuation of renewable energy sources and compensate for the prediction deviation. However, if the renewable energy prediction deviation is small, the energy storage system may work in an underutilized state. To efficiently utilize a renewable-energy-sided energy storage system (RES), this study proposed an optimization dispatching strategy for an energy storage system considering its unused capacity sharing. First, this study proposed an unused capacity-sharing strategy for the RES to fully utilize the storage’s unused capacity and elevate the storage’s service efficiency. Second, RES was divided into “deviation-compensating energy storage (DES)” and “sharing energy storage (SES)” to clarify the function of RES in the operation process. Third, this study established an optimized dispatching model to achieve the lowest system operating cost wherein the unused capacity- sharing strategy could be integrated. Finally, a case study was investigated, and the results indicated that the proposed model and algorithm effectively improved the utilization of renewable-energy-side energy storage systems, thereby reducing the total operation cost and pressure on peak shaving.

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