电器与能效管理技术 ›› 2024, Vol. 0 ›› Issue (11): 29-37.doi: 10.16628/j.cnki.2095-8188.2024.11.004

• 储能技术 • 上一篇    下一篇

基于全钒液流电池的构网型储能建模与研究

窦艳1, 王传艺1, 陈子晖1, 王辰1, 李鑫2   

  1. 1.安徽建筑大学 电子与信息工程学院, 安徽 合肥 230009
    2.合肥工业大学 电气与自动化工程学院, 安徽 合肥 230009
  • 收稿日期:2024-07-27 出版日期:2024-11-30 发布日期:2024-12-11
  • 作者简介:窦 艳(1988—),女,讲师,研究方向为储能系统仿真建模与控制技术。|王传艺(2001—),男,硕士研究生,研究方向为全钒液流电池建模及构网型储能技术。|陈子晖(2001—),男,硕士研究生,研究方向为新能源并网控制及系统建模。

Modeling and Research on Grid-Forming Energy Storage Based on Vanadium Redox Flow Battery

DOU Yan1, WANG Chuanyi1, CHEN Zihui1, WANG Chen1, LI Xin2   

  1. 1. School of Electronic and Information Engineering,Anhui Jianzhu University, Hefei 230009, China
    2. School of Electrical Engineering and Automation,Hefei University of Technology, Hefei 230009, China
  • Received:2024-07-27 Online:2024-11-30 Published:2024-12-11

摘要:

为解决高比例新能源并网的间歇性与不稳定性问题,同时提高其利用效率,针对基于全钒液流电池(VRFB)的构网型储能系统展开研究。采用多物理场耦合的VRFB混合模型,全面模拟其动态运行特性;设计基于直流母线电压外环的柔性充放电控制策略,并集成虚拟同步发电机(VSG)控制技术,实现对VRFB充放电的精确控制;最后,通过MATLAB/Simulink建模仿真验证策略的有效性。结果表明,所提策略长时放电能稳定输出端电压,在光伏/VRFB并网运行、调频调压及维持直流母线电压稳定等方面性能优异,验证了VRFB在构网型储能领域的应用潜力。

关键词: 全钒液流电池, 构网型储能, 混合模型, 柔性充放电, 虚拟同步发电机

Abstract:

To address the intermittent and unstable issues of high-proportion new energy grid connection and enhance its utilization efficiency,the grid-forming energy storage system based on vanadium redox flow batteries (VRFB) is focused on.The research employs a multi-physics field-coupled VRFB hybrid model to simulate its dynamic operation characteristics comprehensively.Based on this,a flexible charge and discharge control strategy based on the outer loop of the DC bus voltage is designed,and the virtual synchronous generator (VSG) control technology is integrated to achieve precise control of VRFB’s charge and discharge.The effectiveness of the strategy is verified through modeling and simulation in MATLAB/Simulink.The results indicate that this strategy can stabilize the output terminal voltage during long-term discharge and performs outstandingly in photovoltaic/VRFB grid-connected operation,frequency and voltage regulation,and maintaining the stability of the DC bus voltage,which can validate the application potential of VRFB in the field of grid-forming energy storage.

Key words: vanadium redox flow battery (VRFB), grid-forming energy storage, hybrid modeling, lexible charging and discharging, virtual synchronous generator (VSG)

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