测量和建模误差对无迹卡尔曼滤波SOC算法精度影响  

Influence of Measurement and Modeling Errors on Accuracy of UKF SOC Algorithm

作　　者：李勇琦 李毓烜 陈满 凌志斌 LI Yongqi;LI Yuxuan;CHEN Man;LING Zhibin(CSG Power Generation Company,Guangzhou 510630,China;CSG Advanced Energy Storage Technology Joint Laboratory,Guangzhou 510630,China;Key Laboratory of Control of Power Transmission and Conversion,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]南方电网调峰调频发电有限公司,广东广州510630 [2]南方电网先进储能联合实验室,广东广州510630 [3]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《电工技术》2022年第4期39-41,共3页Electric Engineering

基　　金：国家自然科学基金面上项目(编号51777125);南方电网重点项目(编号0200002020030304JS0031)。

摘　　要：采用正交试验设计的方法,对影响无迹卡尔曼滤波SOC估算算法精度的6个误差因素进行分析。通过对正交试验结果的方差分析,确定了主要影响因素,计算了各误差因素影响的占比。结果表明,SOC模型系统误差与电压测量系统误差对SOC估算结果的影响最大;SOC模型误差与电压测量误差对SOC估算结果影响的大小基本相等,但导致的误差方向相反;为保证5%的SOC估算精度,电压测量的精度需控制在0.1%以内。Six error factors affecting the accuracy of Unscented Kalman Filter SOC estimation algorithm are analyzed by orthogonal experimental design.Through the analysis of variance of orthogonal test results,the main influencing factors are determined,and the proportion of each error factor is calculated.The results show that SOC model system error and voltage measurement system error have the greatest influence on SOC estimation results.The influence of SOC model error and voltage measurement error on SOC estimation results is almost the same,but the error direction is opposite.In order to ensure 5%SOC estimation accuracy,the voltage measurement accuracy should be controlled within 0.1%.

关 键 词：电池储能系统 荷电状态估算 无迹卡尔曼滤波 电压误差 电流误差 

分 类 号：TM46[电气工程—电器]