基于曲面拟合的LCSS电池模块成组技术研究
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摘要
大容量储能系统(LCSS)作为微网系统重要的能量缓冲环节,对微网的稳定控制与运行具有非常重要的作用。以适用于大容量储能系统的全钒液流电池单体作为实验研究对象,根据实验测得的其以不同串、并联方式集成所测得的内阻数据,提出采用曲面插值和拟合的方法进行数据优化处理。以不同串、并联数作为实验变量,考虑电池运行的荷电状态(SOC),并通过MATLAB曲面拟合函数进行最优化拟合,得到拟合曲面,以电池单体集成总内阻和集成后单体平均内阻最小作为最佳目标函数,探索电池单体集成的最佳成组方式。
Large capacity storage system(LCSS), as an important energy buffering link of microgrid, plays an important role in the stability control and operation of microgrid. Vanadium liquid battery monomer suited for LCSS was adopted in this paper as study object, according to the measured data of internal resistance measured in different serial and parallel ways, the method of surface interpolation and fitting was proposed to optimize and process the data. This method, with different number of series and parallel as experimental variables, considered the battery state of charge(SOC), and the fitting surface of the data were obtained by MATLAB surface fitting function.Then, the best grouping method of battery monomer integration was explored by the way that considering the minimum total internal resistance and the minimum average resistance as the optimum target.
Large capacity storage system(LCSS), as an important energy buffering link of microgrid, plays an important role in the stability control and operation of microgrid. Vanadium liquid battery monomer suited for LCSS was adopted in this paper as study object, according to the measured data of internal resistance measured in different serial and parallel ways, the method of surface interpolation and fitting was proposed to optimize and process the data. This method, with different number of series and parallel as experimental variables, considered the battery state of charge(SOC), and the fitting surface of the data were obtained by MATLAB surface fitting function.Then, the best grouping method of battery monomer integration was explored by the way that considering the minimum total internal resistance and the minimum average resistance as the optimum target.
引文
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[3]陆秋瑜,胡伟,郑乐,等.多时间尺度的电池储能系统建模及分析应用[J].中国电机工程学报,2013,33(16):86-93.
[4]陆志刚,王科,刘怡,等.深圳宝清锂电池储能电站关键技术及系统成套设计方法[J].电力系统自动化,2013,37(1):65-69.
[5]叶小晖,刘涛,吴国旸,等.电池储能系统的多时间尺度仿真建模研究及大规模并网特性分析[J].中国电机工程学报,2015,35(11):2635-2644.
[6]李蓓,郭剑波,陈继忠,等.液流储能电池系统支路电流的建模与仿真分析[J].中国电机工程学报,2011,31(27):1-7.
[7]李少林,姚国兴.风光互补发电蓄电池超级电容器混合储能研究[J].电力电子技术,2010,44(2):12-14.
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[9]祝龙记,石晓艳.电气工程与自动化控制系统的MATLAB仿真[M].徐州:中国矿业大学出版社,2014.