储能系统多电池簇健康状态均衡控制策略
Health State Equalization Control Strategy for Multi-battery Clusters in Energy Storage Systems
彭昊 1罗正经 1夏向阳 2曾刚 1欧宇健 1陈贵全 2王继军 1刘立洪1
作者信息
- 1. 湖南经研电力设计有限公司,湖南长沙 410007
- 2. 长沙理工大学电气与信息工程学院,湖南长沙 410114
- 折叠
摘要
针对储能系统中多电池簇健康状态均衡问题,提出储能系统多电池簇健康状态均衡控制策略,该策略依据电池寿命变化规律和并网要求设置储能变流器并网功率下限,基于该下限确定系统参与运行的储能变流器台数,再结合层次分析法对参与运行的各电池簇健康状态进行量化评价,求得各储能变流器承担并网功率指令的权重系数和相应的功率大小,调整参与运行的储能变流器台数和传输功率以确保各储能变流器功率不越限.将所提控制策略与均摊控制策略相比,结果表明,所提策略可有效均衡各电池簇健康状态,延长储能电站整体使用寿命40.6%,有效提高了储能电站的安全性和经济性.
Abstract
To address the issue of health state equalization among multiple battery clusters in energy storage systems,this paper designs a multi-battery cluster health state equalization control strategy for the energy storage system.This strategy sets the minimum grid-connected power limit for the storage converter according to the change rule of battery life and the grid connection requirements and determines the number of storage converter units involved in the operation of the system based on this limit.Furthermore,the hierarchical analysis method is combined to evaluate the health state of the various clusters of batteries involved in the operation and quantify the value to get the weight coefficients and corresponding power sizes of the storage converter to assume the grid-connected power command.The number of participating energy storage converters and the transmitted power are adjusted to ensure that the power of each energy storage converter does not exceed the limit.Compared with the equalization control strategy,the proposed control strategy can effectively equalize the health state of each battery cluster,extending the overall service life of the energy storage power plant by 40.6% and effectively improving the safety and economy of the energy storage power plant.
关键词
储能系统/电池寿命变化规律/储能变流器/层次分析法/安全性/经济性Key words
energy storage system/battery life change rule/energy storage converter/hierarchical analysis method/safety/economy引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据