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

doi:10.11930/j.issn.1004-9649.202402009

中国电力 ›› 2024, Vol. 57 ›› Issue (10): 25-35.DOI: 10.11930/j.issn.1004-9649.202402009

• 面向现代智慧配电网的二次系统规划 • 上一篇下一篇

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

李世龙¹(), 李龙江², 刘欣博³(), 张华¹()

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

收稿日期:2024-02-03 出版日期:2024-10-28 发布日期:2024-10-25
作者简介:李世龙（1989—），男，高级工程师，博士，从事配电网运行与控制技术研究，E-mail：981163632@qq.com
刘欣博（1982—），女，通信作者，博士，副教授，从事微电网动态性能及稳定性分析研究，E-mail：66136040@qq.com
张华（1995—），男，高级工程师，硕士研究生，从事电力系统安全稳定分析与控制研究，E-mail：398611352@qq.com
基金资助:
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）。

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

Shilong LI¹(), Longjiang LI², Xinbo LIU³(), Hua ZHANG¹()

1. State Grid Sichuan Electric Power Research Institute, Chengdu 610000, China.
2. State Grid Garze Electric Power Co., Ltd., Garze Tibetan Autonomous Prefecture 626000, China
3. Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu 610213, China

Received:2024-02-03 Online:2024-10-28 Published:2024-10-25
Supported by:
This work is supported by Science and Technology Project of State Grid Sichuan Electric Power Company (Key Technologies of Flexible Network Construction and Multi-mode Operation of Distributed Resources, No.521997220031).

摘要/Abstract

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。

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

Abstract:

In order to compensate for the negative impedance characteristics of constant power load in the direct current (DC) microgrid, 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 bandwidth ω₀ 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.

Key words: DC microgrid, energy storage converter, linear active disturbance rejection, parameter tuning, mixed potential function

李世龙, 李龙江, 刘欣博, 张华. 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[J]. 中国电力, 2024, 57(10): 25-35.

Shilong LI, Longjiang LI, Xinbo LIU, Hua ZHANG. Linear Active Disturbance Rejection Control Parameter Tuning Method for Energy Storage Converter with Enhanced Stability[J]. Electric Power, 2024, 57(10): 25-35.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202402009

https://www.electricpower.com.cn/CN/Y2024/V57/I10/25

图/表 17

图 1 线性自抗扰结构

Fig.1 Structure of linear active disturbance rejection

图 2 传递函数伯德图

Fig.2 Bode plot of transfer function

图 3 双向DC-DC变换器的结构

Fig.3 Structure of bidirectional DC-DC converter

图 4 直流微电网系统结构和控制图

Fig.4 DC microgrid system structure and control diagrams

图 5 直流微电网系统的等效模型

Fig.5 Equivalent model of DC microgrid system

图 6 储能变流器的控制结构

Fig.6 Control structure of energy storage converter

图 7 实验平台

Fig.7 Experimental platforms

表 1 直流微电网实验系统参数

Table 1 Parameters of DC microgrid experiment system

参数	充电	放电
直流母线电压/V	400	400
蓄电池端电压/V	200	200
微源电流/A	6	6
等效内阻/Ω	0.01	0.01
滤波电感/mH	1	1
滤波电容/μF	1000	1000
母线电容/μF	1000	1000
恒功率负载P₁, P₂/W	2000	4000

图 8 满足放电条件下自抗扰控制下直流母线电压波形

Fig.8 DC bus voltage waveforms with active disturbance rejection control satisfying discharge conditions

图 9 满足放电条件下PI控制下直流母线电压波形

Fig.9 DC bus voltage waveforms with PI control satisfying discharge conditions

图 10 满足放电条件下自抗扰和PI控制下蓄电池电流波形

Fig.10 Battery current waveforms with active disturbance rejection and PI control satisfying discharge conditions

图 11 不满足放电条件的自抗扰控制下直流母线电压波形

Fig.11 DC bus voltage waveforms with active disturbance rejection without satisfying discharge conditions

图 12 不满足放电条件的自抗扰控制下蓄电池电流波形

Fig.12 Battery current waveforms with active disturbance rejection control without satisfying discharge conditions

图 13 满足充电条件的自抗扰控制下直流母线电压波形

Fig.13 DC bus voltage waveforms with active disturbance rejection control satisfying charging conditions

图 14 满足充电条件的自抗扰控制下蓄电池电流波形

Fig.14 Battery current waveforms with active disturbance rejection control satisfying charging conditions

图 15 不满足充电条件的自抗扰控制下直流母线电压波形

Fig.15 DC bus voltage waveforms with active disturbance rejection control without satisfying charging conditions

图 16 不满足充电条件的自抗扰控制下蓄电池电流波形

Fig.16 Battery current waveforms with active disturbance rejection control without satisfying charging conditions

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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

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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

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