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arXiv 2407.09428eess.SYcs.SY
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储能的输电价值与基本限制

The Transmission Value of Energy Storage and Fundamental Limitations

Qian Zhang, P. R. Kumar, Le Xie

AI总结:

本研究从累计能量视角揭示电网储能与输电设施的内在关联,确立二者可相互替代的理论极限及最小容量闭式表达式,提出储能充足时可按平均功率设计输电容量,为储能作为输电资产的市场设计提供理论支撑。

摘要:

本研究针对电网中储能的输电价值展开探讨。研究从“累计能量”视角捕捉储能与输电基础设施之间的内在关联,由此可将传统优化问题以线路功率流作为决策变量进行重新表述。研究还确立了储能与输电线路二者可相互替代的理论极限,并给出了所需最小容量的显式闭式表达式。与传统实践中根据峰值输电需求设计输电线路的做法关键不同的是,在储能容量充足的情况下,输电线路容量可基于平均输电需求进行设计。本文的模型仅依赖少量基本假设,为理解未来将储能作为输电资产的市场设计铺平了道路。基于2节点、改进型RTS 24节点、RTS-GMLC以及得克萨斯州合成电力系统的数值实验验证了上述结果。

英文摘要:

This study addresses the transmission value of energy storage in electric grids. The inherent connection between storage and transmission infrastructure is captured from a "cumulative energy" perspective, which enables the reformulating of the conventional optimization problem by employing line power flow as the decision variable. The study also establishes the theoretical limitations of both storage and transmission lines that can be replaced by each other, providing explicit closed-form expressions for the minimum capacity needed. As a key departure from conventional practice in which transmission lines are designed according to the peak power delivery needs, with sufficient storage capacity, the transmission line capacity can be designed based on the average power delivery needs. The models of this paper only rely on a few basic assumptions, paving the way for understanding future storage as a transmission asset market design. Numerical experiments based on 2-bus, modified RTS 24-bus, RTS-GMLC, and Texas synthetic power systems illustrate the results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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