分布式电池储能系统在概率输入延时下的荷电状态安全均衡控制  

Distributed state-of-charge secure balance control for battery energy storage systems under probabilistic input time-delays

作　　者：卢坤杰 田恩刚 王立成 LU Kun-jie;TIAN En-gang;WANG Li-cheng(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Optical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;College of Automation Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海理工大学光电信息与计算机工程学院,上海200093 [3]上海电力大学自动化工程学院,上海200090

出　　处：《控制理论与应用》2024年第12期2374-2382,共9页Control Theory & Applications

基　　金：国家自然科学基金项目(62003213,62173231);上海市自然科学基金项目(21ZR1444900)资助。

摘　　要：本文研究了直流微电网中电池储能系统(BESSs)在概率输入延时下的分布式荷电状态(SOC)安全均衡控制问题.由于控制器与BESS单体系统之间的信号主要通过无线网络传输,且传输距离较远,输入时间延时是影响SOC均衡控制的一大因素.为此,论文通过引入一个概率已知的服从伯努利分布的随机变量来表征概率输入时滞现象,提出了一种改进的分布式均衡策略来实现概率输入延时下的SOC均衡控制.借助李雅普诺夫稳定性理论,建立了均衡误差系统在一定约束条件下实现BESSs的SOC均衡的充分条件.最后,通过一系列的数值仿真实验验证了该均衡方案的有效性.This paper investigates the distributed state-of-charge(SOC)security balancing control problem of battery energy storage systems(BESSs)in DC microgrids subjected to probabilistic input time-delay.Since the signals between the controller and the BESS unit are mainly transmitted through the wireless network,and the transmission distance is relatively long,the input time-delay is a major factor affecting the SOC balancing control.Therefore,a Bernoulli distribution random variable with known probability is introduced to characterize the phenomenon of the probabilistic input time-delay,and an improved distributed equalization strategy is proposed to achieve the SOC equalization control under probabilistic input time-delay.With the help of the Lyapunov stability theory,sufficient conditions for the consensus error system to realize the SOC equalization of the BESSs under certain constraints are established.Finally,a series of numerical simulation experiments verify the effectiveness of the equalization scheme.

关 键 词：电池储能系统 荷电状态均衡 直流微电网 概率输入延时 

分 类 号：TM91[电气工程—电力电子与电力传动]