Performance of a hybrid battery energy storage system
Performance of a hybrid battery energy storage system
复制标题
混合动力电池储能系统的性能
DOI：
10.1016/j.egyr.2022.05.040
复制
发表时间：
2022
期刊：
影响因子：
5.2
通讯作者：
P. Stevenson
中科院分区：
文献类型：
--
作者：
A. Dascalu;S. Sharkh;A. Cruden;P. Stevenson
在由可再生发电机主导的电网中，使用储能系统是不可避免的。本文介绍了一个100千瓦/270千瓦时，并网，混合电池储能系统的性能概述。混合动力系统使用两种类型的电池化学物质，锂离子和铅酸直接连接在直流总线上-没有电力电子转换器。在对该项目进行简要介绍和简短的技术说明后，本文介绍了2019年至2021年的三年运行数据集。电池数据随后被分成单独的充电/放电循环，并在功率和串电流共享、能量、往返效率和串之间的能量传递方面进行分析。分析表明，该系统的平均往返能量效率为90%，并取决于放电深度。在充电和放电过程中，串间的能量传递分别占放电总能量的5.5%和2.47%。铅酸电池的容量损失最小，锂离子电池几乎没有容量下降。
The use of energy storage systems is inevitable in a power grid dominated by renewable generators. This paper presents a performance overview of a 100 kW/270 kWh, grid-connected, hybrid battery energy storage system. The hybrid system uses two types of battery chemistries, li-ion and lead–acid connected directly at the DC bus — without power electronic converters. After a brief introduction and a short technical description of the project, the paper presents a three year, 2019 to 2021, operational data set. The battery data is later split into individual charge/discharge cycles and analyzed in terms of power and strings current sharing, energy, round-trip efficiency and energy transfer between the strings. The analysis shows that the average round-trip energy efficiency of the system is 90% and depends on the depth of discharge. The energy transfer between the strings can happen during charge or discharge and the average values are 5.5% (during charge) and 2.47% (during discharge) of the total discharged energy. Minimum capacity loss was recorded for the lead–acid cells and practically no capacity degradation for the li-ion cells.