IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v11y2018i7p1835-d157694.html
   My bibliography  Save this article

A Novel Hierarchical Control Strategy for Low-Voltage Islanded Microgrids Based on the Concept of Cyber Physical System

Author

Listed:
  • Qiuxia Yang

    (Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

  • Dongmei Yuan

    (Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

  • Xiaoqiang Guo

    (Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

  • Bo Zhang

    (Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

  • Cheng Zhi

    (Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

Abstract

Based on the concept of cyber physical system (CPS), a novel hierarchical control strategy for islanded microgrids is proposed in this paper. The control structure consists of physical and cyber layers. It’s used to improve the control effect on the output voltages and frequency by droop control of distributed energy resources (DERs), share the reactive power among DERs more reasonably and solve the problem of circumfluence in microgrids. The specific designs are as follows: to improve the control effect on voltages and frequency of DERs, an event-trigger mechanism is designed in the physical layer. When the trigger conditions in the mechanism aren’t met, only the droop control (i.e., primary control) is used in the controlled system. Otherwise, a virtual leader-following consensus control method is used in the cyber layer to accomplish the secondary control on DERs; to share the reactive power reasonably, a method of double virtual impedance is designed in the physical layer to adjust the output reactive power of DERs; to suppress circumfluence, a method combined with consensus control without leader and sliding mode control (SMC) is used in the cyber layer. Finally, the effectiveness of the proposed hierarchical control strategy is confirmed by simulation results.

Suggested Citation

  • Qiuxia Yang & Dongmei Yuan & Xiaoqiang Guo & Bo Zhang & Cheng Zhi, 2018. "A Novel Hierarchical Control Strategy for Low-Voltage Islanded Microgrids Based on the Concept of Cyber Physical System," Energies, MDPI, vol. 11(7), pages 1-24, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1835-:d:157694
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/11/7/1835/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/11/7/1835/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Cagnano, A. & De Tuglie, E., 2016. "A decentralized voltage controller involving PV generators based on Lyapunov theory," Renewable Energy, Elsevier, vol. 86(C), pages 664-674.
    2. Chunxia Dou & Zhanqiang Zhang & Dong Yue & Hanxiao Gao, 2017. "An Improved Droop Control Strategy Based on Changeable Reference in Low-Voltage Microgrids," Energies, MDPI, vol. 10(8), pages 1-18, July.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yalong Hu & Wei Wei, 2018. "Improved Droop Control with Washout Filter," Energies, MDPI, vol. 11(9), pages 1-18, September.
    2. Mahmoud Saleh & Yusef Esa & Ahmed Mohamed, 2018. "Applications of Complex Network Analysis in Electric Power Systems," Energies, MDPI, vol. 11(6), pages 1-16, May.
    3. Naderi, Yahya & Hosseini, Seyed Hossein & Ghassem Zadeh, Saeid & Mohammadi-Ivatloo, Behnam & Vasquez, Juan C. & Guerrero, Josep M., 2018. "An overview of power quality enhancement techniques applied to distributed generation in electrical distribution networks," Renewable and Sustainable Energy Reviews, Elsevier, vol. 93(C), pages 201-214.
    4. Zeyan Lv & Yanghong Xia & Junwei Chai & Miao Yu & Wei Wei, 2018. "Distributed Coordination Control Based on State-of-Charge for Bidirectional Power Converters in a Hybrid AC/DC Microgrid," Energies, MDPI, vol. 11(4), pages 1-15, April.
    5. Murray, William & Adonis, Marco & Raji, Atanda, 2021. "Voltage control in future electrical distribution networks," Renewable and Sustainable Energy Reviews, Elsevier, vol. 146(C).
    6. Hamada Almasalma & Sander Claeys & Konstantin Mikhaylov & Jussi Haapola & Ari Pouttu & Geert Deconinck, 2018. "Experimental Validation of Peer-to-Peer Distributed Voltage Control System," Energies, MDPI, vol. 11(5), pages 1-22, May.
    7. Majid Ghaffarianfar & Amin Hajizadeh, 2018. "Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units," Energies, MDPI, vol. 11(8), pages 1-13, July.
    8. Bum-Jun Kim & Ho-Jung Kum & Jung-Min Park & Chung-Yuen Won, 2018. "Analysis, Design and Implementation of Droop-Controlled Parallel-Inverters Using Dynamic Phasor Model and SOGI-FLL in Microgrid Applications," Energies, MDPI, vol. 11(7), pages 1-19, June.
    9. Cagnano, A. & De Tuglie, E. & Mancarella, P., 2020. "Microgrids: Overview and guidelines for practical implementations and operation," Applied Energy, Elsevier, vol. 258(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1835-:d:157694. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.