基于等效模型的全钒液流电池运行优化控制研究

doi:10.12028/j.issn.2095-4239.2018.0026

储能科学与技术 ›› 2018, Vol. 7 ›› Issue (3): 530-538.doi: 10.12028/j.issn.2095-4239.2018.0026

基于等效模型的全钒液流电池运行优化控制研究

迟晓妮¹, 朱敏刚², 吴秋轩²

1. 杭州职业技术学院青年汽车学院, 浙江杭州 310018;
2. 杭州电子科技大学自动化学院, 浙江杭州 310018

收稿日期:2018-03-05 修回日期:2018-04-01 出版日期:2018-05-01 发布日期:2018-04-17
通讯作者: 吴秋轩,副教授,主要研究方向为新能源电力及控制,E-mail:wuqx@hdu.edu.cn
作者简介:迟晓妮(1979-),女,讲师,主要研究方向为新能源汽车及储能控制,E-mail:Chi_xiaoni@126.com
基金资助:
浙江省基础公益研究计划项目（LGG18E070001），杭州市科技计划项目（20160533B93）。

Research on optimal operation control based on the equivalent model of VRFB system

CHI Xiaoni¹, ZHU Mingang², WU Qiuxuan²

1. Youngman Automotive Institute, Hangzhou Vocational & Technical College, Hangzhou 310018, Zhejiang, China;
2. College of Automation, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China

Received:2018-03-05 Revised:2018-04-01 Online:2018-05-01 Published:2018-04-17

摘要/Abstract

摘要： 全钒电池的建模和运行参数是影响电池性能的重要因素，现有的等效电路模型往往由于缺乏和流体力学模型的耦合，无法研究流量对全钒液流电池性能和效率的影响，因而在实际项目应用中不够完善；另外纯粹的流体力学模型对于电池本身的电气特性过于简化，无法充分反映全钒液流电池系统的特性。因此本文利用钒电池基本原理和等效损耗建立了等效电路模型，根据机械损耗和钒电池结构参数，建立钒电池流体力学模型，根据搭建的钒电池系统等效模型分析电池运行参数对电池性能的影响规律。仿真分析表明，充放电期间的最优流量是关于荷电状态的函数，根据该现象利用流量随着荷电状态SOC的变化进行分段控制。通过仿真分析，根据SOC变化而分段控制流量的优化运行策略可以有效地提高钒电池效率。

关键词: 全钒液流电池, 系统等效模型, 运行参数, 优化控制

Abstract: The operating parameters of VRFB are important factors affecting the performance of the battery. The existing equivalent circuit model often fail to study the effect of flow rate on the performance and efficiency of VRFB due to the lack of coupling with hydrodynamic model, so they are not perfect in practical projects; In addition, the pure hydrodynamic model only studies the relationship between flow rate and pump loss, but the electrical characteristics of the battery itself are too simplified, which cannot fully reflect the characteristics of VRFB system. Therefore, the equivalent circuit model of the basic principle and the equivalent loss of vanadium battery was established based on basic principle and the equivalent loss of VRFB while the hydrodynamic model was established based on mechanical loss and structure parameters in this paper. Based on the equivalent model of the VRFB system, the influence of the operating parameters of the battery on the battery performance was analyzed. The simulation analysis shows that the optimal flow rate during charging-discharging is a function of the state of charge. According to this phenomenon, the flow is controlled piecewise with the change of SOC. Through the analysis of simulation results, the efficiency of VRFB can be effectively improved by the optimal operation strategy of subsection control flow rate according to the change of SOC.

Key words: all vanadium redox flow battery, equivalent model of vanadium battery system, operating parameters, optimal control

中图分类号:

TQ028.8

迟晓妮, 朱敏刚, 吴秋轩. 基于等效模型的全钒液流电池运行优化控制研究[J]. 储能科学与技术, 2018, 7(3): 530-538.

CHI Xiaoni, ZHU Mingang, WU Qiuxuan. Research on optimal operation control based on the equivalent model of VRFB system[J]. Energy Storage Science and Technology, 2018, 7(3): 530-538.

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基于等效模型的全钒液流电池运行优化控制研究

Research on optimal operation control based on the equivalent model of VRFB system

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