一种增强稳定性的储能变流器线性自抗扰控制参数整定方法  

Linear Active Disturbance Rejection Control Parameter Tuning Method for Energy Storage Converter with Enhanced Stability

作　　者：李世龙 李龙江 刘欣博 张华 LI Shilong;LI Longjiang;LIU Xinbo;ZHANG Hua(State Grid Sichuan Electric Power Research Institute,Chengdu 610000,China.;State Grid Garze Electric Power Co.,Ltd.,Garze Tibetan Autonomous Prefecture 626000,China;Sichuan Energy Internet Research Institute,Tsinghua University,Chengdu 610213,China)

机构地区：[1]国网四川省电力公司电力科学研究院,四川成都610000 [2]国网甘孜电力有限责任公司,四川甘孜藏族自治州626000 [3]清华四川能源互联网研究院,四川成都610213

出　　处：《中国电力》2024年第10期25-35,共11页Electric Power

基　　金：国网四川省电力公司科技项目(分布式资源灵活构网与多模式运行关键技术,521997220031)。

摘　　要：直流微电网中,为了补偿恒功率负载的负阻抗特性,须加快混合储能系统响应速度,充分发挥其性能。针对微电网的储能变流器,提出了一种基于混合势函数理论的线性自抗扰控制参数整定方法。首先,推导储能变流器的自抗扰传递函数。接着,对含混合储能系统、恒功率负载的直流微电网进行稳定性分析,得到考虑扩张状态观测器带宽ω0的混合势函数判据,为储能变流器自抗扰控制的线性扩张状态观测器带宽和状态误差反馈控制参数的整定提供了重要依据。实验结果表明,所提方法响应速度快,抗扰性强,能够补偿恒功率负载的负阻抗特性,保障了直流微电网系统的稳定性。In order to compensate for the negative impedance characteristics of constant power load in the direct current(DC)mic-rogrid,it is necessary to speed up the response speed of the hybrid energy storage system and give full play to its performance.This paper proposed a linear active disturbance rejection control parameter tuning method based on the mixed potential function theory for the energy storage converter of the microgrid.Firstly,the active disturbance rejection transfer function of the energy storage converter was derived.Then,the stability of the DC microgrid with a hybrid energy storage system and constant power load was analyzed,and the mixed potential function criterion considering the bandwidthω0 of the extended state observer was derived,which provided an important basis for tuning the linear extended state observer bandwidth and the state error feedback control parameter of the energy storage converter with active disturbance rejection control.Experimental results show that the proposed method has a fast response speed and strong disturbance rejection ability,which ensures the stable operation of the DC microgrid system.

关 键 词：直流微电网 储能变流器 线性自抗扰 参数整定 混合势函数 

分 类 号：TM46[电气工程—电器]