林达,张雪松,李正阳
LIN Da,ZHANG Xuesong,LI Zhengyang

• 1:国网浙江省电力有限公司电力科学研究院
• 2:北京理工大学机械与车辆学院

摘要(Abstract)：

目前预装式电化学储能电站为储能工程推广应用的重要方式，针对其全寿命周期数字孪生技术开展研究，提出了一种电化学储能电站电-热-流多物理场数字孪生模型建立方法。首先，通过设计电池标准化测试方案，获取电池的容量/能量、OCV（开路电压）和功率等基础特性以及电池的多物理场耦合规律；然后，通过测试数据辨识电池模型参数，构建老化模型参数数据库；其次，基于ICA（容量增量分析法）揭示电池老化过程，并提取特征映射电池最大可用容量；接着，基于电池多物理场耦合特性，利用实测激光扫描仪、工程图纸、COMSOL多物理场仿真软件建立电池舱的热场、流体场模型。最后，依托浙江省某用户侧预装式储能电站进行技术验证，结果表明，所建立的数字孪生模型可实现电站电-热-流多物理场推演以及状态评估。
Prefabricated electrochemical energy storage stations are crucial for the promotion and application of energy storage projects. To conduct research on digital twin technology throughout the lifecycle, the paper proposes a method for establishing a digital twin model for electrochemical energy storage power stations based on electricthermal-fluid fields. Firstly, standardized testing protocols for batteries are designed to acquire fundamental characteristics such as capacity, energy, open circuit voltage(OCV), and power, as well as the coupling laws of multiple physical fields of batteries. Subsequently, battery model parameters are identified through test data, and an aging model parameter database is constructed. Next, the aging process of batteries is revealed based on incremental capacity analysis(ICA), and the maximum available capacity of the batteries is extracted through feature mapping.Following this, leveraging the coupling characteristics of multiple physical fields of batteries, thermal and fluid field models of battery compartments are established using real-world laser scanners, engineering drawings, and COMSOL Multiphysics software. Finally, technical validation is performed using a user-side prefabricated energy storage station in Zhejiang Province, demonstrating that the established digital twin model enables deduction and state assessment of electric-thermal-fluid fields.

关键词(KeyWords)： 预装式储能电站;数字孪生;电-热-流多物理场;电池老化;状态评估
prefabricated energy storage power station;digital twin;electric-thermal-fluid field;battery aging;condition assessment

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目（5211DS21N006）

作者(Author): 林达,张雪松,李正阳
LIN Da,ZHANG Xuesong,LI Zhengyang

DOI: 10.19585/j.zjdl.202405008

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