从 K-均值聚类年度负荷曲线数据看通过 BESS 选型推迟配电网升级的经济可行性

Edwin Ondigo, Cyrus Wekesa
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引用次数: 0

摘要

电力需求的增长要求电力基础设施升级,而系统运营商则需要制定策略,在负荷增长的同时提高配电网络(DN)的容量。本研究提出了一种利用历史负荷曲线部署锂离子电池储能系统 (BESS) 以推迟配电网升级的简单方法。采用 k-means 算法将从变电站获得的年度负荷曲线按 15 分钟间隔分组。负荷数据经最小-最大缩放后作为输入输入到 K-means 算法中。在确定 DN 升级延迟效益时采用了 NPV 财务分析方法,获得的效益取决于锂离子 BESS 的价格和馈线升级成本。结果表明,锂离子 2000kW/3000kWh BESS 的经济可行性可达四年,净现值为 10 千美元。将锂离子电池ESS 和馈线升级成本分别提高到 80% 和 120%,可获得更多收益和延迟年限,延迟年限增加到 6 年,3100kW/6000kWh 的锂离子电池ESS 的净现值为 11 万美元。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Economic Viability of Distribution Network Upgrade Deferral through BESS Sizing from K-Means Clustered Annual Load Profile Data
The augmented electricity demand requires electrical infrastructure upgrades with system operators instituting strategies to increase Distribution Network (DN) capacity in tandem with load growth. In this study, a simple method of deploying Li-ion Battery Energy Storage Systems (BESSs) to defer DN upgrades is presented by utilizing historical load profiles. The k-means algorithm is employed to cluster the annual load profiles obtained from a substation in groups of 15-minute intervals. The load data are min-max scaled and fed as input to the K-means algorithm. The NPV financial analysis method is followed in the DN upgrade deferral benefit determination with the acquired benefit depending on Li-ion BESS price and feeder upgrade cost. The results indicate economic viability of up to four years with a Net Present Value (NPV) of US$10k for Li-ion 2000kW/3000kWh BESS. More benefits and deferral years are achieved by varying Li-ion BESS and feeder upgrade costs to 80% and 120%, respectively with deferral years increased to six with an NPV of US$110k for Li-ion BESS of 3100kW/6000kWh.
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