Strategies for smoothing power fluctuations in lithium-ion battery–supercapacitor energy storage systems

IF 2.4 4区 工程技术 Q3 ENERGY & FUELS International Journal of Low-carbon Technologies Pub Date : 2023-01-01 DOI:10.1093/ijlct/ctad114
Zenglei Liu, An Lu
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Abstract

Abstract Onshore wind power has received attention from governments, including China and Europe, as a renewable energy generation technology. Still, it is highly influenced by weather factors and often requires energy storage systems to smooth its power. The hybrid energy storage system (HESS), comprising a lithium-ion battery and a supercapacitor (SC), fully uses the advantages of both the lithium-ion battery and SC with high energy and high power density. The contribution of this paper is to give a control strategy for internal power coordination and smoothing power fluctuation in HESS. For internal power coordination, when the state of charge (SOC) of a lithium-ion battery and SC are not in the normal range simultaneously, the lithium-ion battery power limit must be adjusted to regulate their SOC. In contrast, for smoothing power fluctuation, a low-pass filter is used to reduce the charge/discharge depth of the lithium-ion battery and maintain the SOC of SC. The trigonometric factor is used to optimize the particle swarm optimization (PSO) to obtain a better power distribution value. The proposed strategy is optimized using onshore wind power generation and load 1-day power variation, and the results achieve the desired goal with superior application.
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锂离子电池-超级电容器储能系统功率波动平滑策略
陆上风电作为一种可再生能源发电技术,已受到包括中国和欧洲在内的各国政府的重视。然而,它受天气因素的影响很大,通常需要储能系统来平稳供电。由锂离子电池和超级电容器组成的混合储能系统(HESS)充分利用了锂离子电池和超级电容器的高能量和高功率密度的优点。本文的贡献在于给出了HESS内部功率协调和平滑功率波动的控制策略。对于内部功率协调,当锂离子电池的荷电状态(state of charge, SOC)和SC不在正常范围内时,必须通过调整锂离子电池的功率限制来调节其荷电状态。为了平滑功率波动,采用低通滤波器减小锂离子电池的充放电深度,维持SC的SOC,采用三角因子优化粒子群优化(PSO),获得更好的功率分配值。利用陆上风力发电和负荷1天功率变化对所提策略进行优化,结果达到预期目标,具有优越的应用价值。
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来源期刊
CiteScore
4.30
自引率
4.30%
发文量
106
审稿时长
27 weeks
期刊介绍: The International Journal of Low-Carbon Technologies is a quarterly publication concerned with the challenge of climate change and its effects on the built environment and sustainability. The Journal publishes original, quality research papers on issues of climate change, sustainable development and the built environment related to architecture, building services engineering, civil engineering, building engineering, urban design and other disciplines. It features in-depth articles, technical notes, review papers, book reviews and special issues devoted to international conferences. The journal encourages submissions related to interdisciplinary research in the built environment. The journal is available in paper and electronic formats. All articles are peer-reviewed by leading experts in the field.
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