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A Finite-Time Robust Distributed Cooperative Secondary Control Protocol for Droop-Based Islanded AC Microgrids

Author

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  • Shafaat Ullah

    (Department of Electrical and Computer Engineering, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
    Department of Electrical Engineering, University of Engineering and Technology Peshawar, Bannu Campus, Bannu 28100, Pakistan)

  • Laiq Khan

    (Department of Electrical and Computer Engineering, COMSATS University Islamabad, Islamabad 45550, Pakistan)

  • Mohsin Jamil

    (Department of Electrical and Computer Engineering, Faculty of Engineering and Applied Sciences, Memorial University of Newfoundland, St. John’s, NL A1B 3X5, Canada)

  • Muhammad Jafar

    (School of Electrical Engineering, National University of Computer and Emerging Sciences Islamabad, Islamabad 45550, Pakistan)

  • Sidra Mumtaz

    (Department of Electrical and Computer Engineering, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan)

  • Saghir Ahmad

    (Department of Electrical and Computer Engineering, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan)

Abstract

In this research work, a resilient finite-time consensus-based distributed secondary control protocol is presented for droop-based distributed generating (DG) units of an islanded AC microgrid (MG). Through a multi-agent control structure, the DG units of the microgrid adjust their active power outputs so that they reach an agreed-upon value in a finite time. Concurrently, all the DG units are forced to operate with their frequencies regulated to the reference MG frequency in a finite time, despite time-varying load perturbations. Each DG unit is provided with a hierarchical control architecture, where the primary control is achieved using the droop control method, while the secondary control is established through the proposed distributed control protocol. The communication between DG units takes place over a sparse communication network. The proposed control protocol is robust to both small and sufficiently large communication latencies and it supports the plug-and-play feature of DG units. Different time-domain-based numerical simulations are carried out on a small as well as large microgrid testbenches in Matlab/Simulink and demonstrate the correctness and effectiveness of the proposed distributed control protocol. A comparative study is also presented with the existing distributed control protocol, and it is found that the proposed strategy is superior in its performance.

Suggested Citation

  • Shafaat Ullah & Laiq Khan & Mohsin Jamil & Muhammad Jafar & Sidra Mumtaz & Saghir Ahmad, 2021. "A Finite-Time Robust Distributed Cooperative Secondary Control Protocol for Droop-Based Islanded AC Microgrids," Energies, MDPI, vol. 14(10), pages 1-26, May.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:10:p:2936-:d:557665
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    References listed on IDEAS

    as
    1. Quan-Quan Zhang & Rong-Jong Wai, 2021. "Robust Power Sharing and Voltage Stabilization Control Structure via Sliding-Mode Technique in Islanded Micro-Grid," Energies, MDPI, vol. 14(4), pages 1-27, February.
    2. Shafaat Ullah & Laiq Khan & Rabiah Badar & Ameen Ullah & Fazal Wahab Karam & Zain Ahmad Khan & Atiq Ur Rehman, 2020. "Consensus based SoC trajectory tracking control design for economic-dispatched distributed battery energy storage system," PLOS ONE, Public Library of Science, vol. 15(5), pages 1-44, May.
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    Cited by:

    1. Edward Smith & Duane Robinson & Ashish Agalgaonkar, 2021. "Cooperative Control of Microgrids: A Review of Theoretical Frameworks, Applications and Recent Developments," Energies, MDPI, vol. 14(23), pages 1-34, December.
    2. Shafaat Ullah & Laiq Khan & Irfan Sami & Ghulam Hafeez & Fahad R. Albogamy, 2021. "A Distributed Hierarchical Control Framework for Economic Dispatch and Frequency Regulation of Autonomous AC Microgrids," Energies, MDPI, vol. 14(24), pages 1-23, December.
    3. Wenguo Li & Mingmin Zhang & Yaqi Deng, 2022. "Consensus-Based Distributed Secondary Frequency Control Method for AC Microgrid Using ADRC Technique," Energies, MDPI, vol. 15(9), pages 1-19, April.

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