Research on Virtual DC Generator-Based Control Strategy of DC Microgrid with Photovoltaic and Energy Storage

被引：0
|
作者：
Zhao F. [1 ]
Xiao C. [1 ]
Chen X. [1 ]
Wang Y. [1 ]
机构：
[1] School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou
来源：
Energy Engineering: Journal of the Association of Energy Engineering | 2023年 / 120卷 / 06期
基金：
中国国家自然科学基金;
关键词：
DC microgrid with photovoltaic and energy storage; impedance ratio; small-signal model; the low inertia characteristics; virtual DC generator;
D O I：
10.32604/ee.2023.025976
中图分类号：
学科分类号：
摘要：
With the penetration of a large number of photovoltaic power generation units and power electronic converters, the DC microgrid shows low inertia characteristics, which might affect the stable operation of the microgrid in extreme cases. In order to enhance the “flexible features” of the interface converter connected to the DC bus, a control strategy of DC microgrid with photovoltaic and energy storage based on the virtual DC generator (VDCG) is proposed in this paper. The interface converters of the photovoltaic power generation system and the energy storage system simulates the inertia and damping characteristics of the DC generator to improve the stability of the DC bus voltage. The impedance ratio of DC microgrid was obtained by establishing the small-signal model of photovoltaic power generation system and energy storage system, and the Nyquist curves was applied to analyze the small-signal stability of the system. Finally, the simulation results were verified with MATLAB/Simulink. The results show that the proposed control strategy can slow down the fluctuation of bus voltage under the conditions of photovoltaic power fluctuation and load mutation, thus enhancing the system stability. © 2023, Tech Science Press. All rights reserved.
引用
收藏
页码：1353 / 1370
页数：17
相关论文
共 50 条
  • [21] Virtual energy storage and partition operation control technology in DC microgrid
    Fu, Yuan
    Wu, Qi
    Sun, Xing
    Zhang, Xiangyu
    Taiyangneng Xuebao/Acta Energiae Solaris Sinica, 2020, 41 (05): : 319 - 328
  • [22] Stability analysis of photovoltaic DC microgrid based on virtual inertia control
    Wang J.
    Zhao J.
    Zeng Z.
    Mao L.
    Qu K.
    Dianli Zidonghua Shebei/Electric Power Automation Equipment, 44 (04): : 55 - 61and95
  • [23] Control strategy of frequency and DC voltage for interfacing converter of hybrid AC/DC microgrid based on improved virtual synchronous generator
    Ashrafi, Sina
    Mousavi-Rozveh, Seyed Ali
    Khorsandi, Amir
    Hosseinian, Seyed Hossein
    IET RENEWABLE POWER GENERATION, 2025, 19 (01)
  • [24] Energy management strategy of DC microgrid hybrid energy storage based on model predictive control
    Du X.
    Shen Y.
    Li J.
    Shen, Yanxia (shenyx@jiangnan.edu.cn), 1600, Power System Protection and Control Press (48): : 69 - 75
  • [25] Research of DC Micro-grid Photovoltaic Energy Storage System Control Strategy
    Liu, Li
    Wang, Yuechao
    Shi, Songjie
    Liu, Chang
    ENERGY DEVELOPMENT, PTS 1-4, 2014, 860-863 : 2474 - 2480
  • [26] Control Strategy of DC Microgrid Energy Storage Converter Based on Node Differential Current
    Zhang W.
    Zhang H.
    Zhi N.
    Wang H.
    Zeng C.
    Diangong Jishu Xuebao/Transactions of China Electrotechnical Society, 2022, 37 (09): : 2199 - 2210
  • [27] Virtual DC Generator Control Strategy for Load DC-DC converter
    Huang, Di
    Fan, Shaosheng
    Fan, Bin
    PROCEEDINGS OF THE 2015 INTERNATIONAL SYMPOSIUM ON COMPUTERS & INFORMATICS, 2015, 13 : 1359 - 1368
  • [28] Distributed control strategy of hybrid energy storage system in the DC microgrid
    Teng, Changpeng
    Wang, Yubin
    Wang, Fan
    Zhang, Fengyi
    JOURNAL OF ENGINEERING-JOE, 2019, (16): : 2851 - 2855
  • [29] Energy management of DC microgrid based on photovoltaic combined with diesel generator and supercapacitor
    Yin, Changjie
    Wu, Hongwei
    Locment, Fabrice
    Sechilariu, Manuela
    ENERGY CONVERSION AND MANAGEMENT, 2017, 132 : 14 - 27
  • [30] Flexible virtual inertial control strategy of photovoltaic-energy storage DC distribution network
    Liu Y.
    Zhou S.
    Liang H.
    Tang X.
    Ma S.
    Xie Y.
    Dianli Zidonghua Shebei/Electric Power Automation Equipment, 2021, 41 (05): : 107 - 113
12345