Equilibrium operation strategy for shared energy storage in power system based on the network equilibrium model

IF 8.9 2区 工程技术 Q1 ENERGY & FUELS
Huan Zhang , Tao Liu , Jianli Jiang
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Abstract

The integration of renewable energy on a large scale into the grid presents a significant challenge to the secure operation of the electricity supply chain. Shared energy storage (SES), an innovative technology to energy management, has garnered increasing attention for its potential to mitigate the challenges associated with renewable energy integration. This study introduces a multi-period electricity supply chain network model that incorporates SES and examines its operational strategies within a competitive landscape, encompassing scheduling, bidding, and the determination of key energy storage parameters. We also investigate the influence of SES on the electricity supply chain members. The findings reveal that: (1) SES can allocate power judiciously among various users based on demand size, ensuring the electricity needs of multiple users are met. (2) The profit of SES is inversely proportional to the rated power, and it exhibits a trend of initial increase followed by a decrease as the rated capacity of SES expands. (3) SES can significantly increase the consumption of renewable energy from 97.25 % to 99.79 % and concurrently lower the energy costs of users by 0.3626 million Yuan. Moreover, SES can substantially curb the peak load of users by 74.36 MW, thereby alleviating the supply pressure. These findings offer valuable guidance for the broader implementation of SES in future power systems.
基于网络均衡模型的电力系统共享储能均衡运行策略
可再生能源大规模并网对电力供应链的安全运行提出了重大挑战。共享能源存储(SES)作为一种能源管理的创新技术,因其缓解可再生能源整合挑战的潜力而受到越来越多的关注。本研究介绍了一个包含SES的多周期电力供应链网络模型,并在竞争环境中考察其运营策略,包括调度、投标和关键储能参数的确定。我们还研究了SES对电力供应链成员的影响。研究结果表明:(1)SES可以根据需求规模在不同用户之间合理分配电力,确保满足多个用户的电力需求。(2) SES的利润与额定功率成反比,随着SES额定容量的增大,其利润呈现先增大后减小的趋势。(3) SES可将可再生能源的利用率从97.25%显著提高到99.79%,同时为用户降低能源成本36.26万元。SES可大幅抑制用户峰值负荷74.36 MW,缓解供电压力。这些发现为在未来电力系统中更广泛地实施SES提供了有价值的指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of energy storage
Journal of energy storage Energy-Renewable Energy, Sustainability and the Environment
CiteScore
11.80
自引率
24.50%
发文量
2262
审稿时长
69 days
期刊介绍: Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.
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