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Optimal Power Control of Inverter-Based Distributed Generations in Grid-Connected Microgrid

Author

Listed:
  • Mohamed A. Hassan

    (Center for Engineering Research, Research Institute, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia)

  • Muhammed Y. Worku

    (Center for Engineering Research, Research Institute, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia)

  • Mohamed A. Abido

    (Electrical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
    Senior Researcher at K. A. CARE Energy Research & Innovation Center, Dhahran 31261, Saudi Arabia)

Abstract

Distributed generation (DG) units are utilized to feed their closed loads in the autonomous microgrid. While in the grid-connected microgrid, they are integrated to support the utility by their required real and reactive powers. To achieve this goal, these integrated DGs must be controlled well. In this paper, an optimal PQ control scheme is proposed to control and share a predefined injected real and reactive powers of the inverter based DGs. The control problem is optimally designed and investigated to search for the optimal controller parameters by minimizing the error between the reference and calculated powers using particle swarm optimization (PSO). Microgrid containing inverter-based DG, PLL, coupling inductance, LC filter, power and current controllers is implemented on MATLAB. Two microgrid cases with different structure are studied and discussed. In both cases, the microgrid performance is investigated under different disturbances such as three-phase fault and step changes. The simulation results show that the proposed optimal control improves the microgrid dynamic stability. Additionally, the considered microgrids are implemented on real time digital simulator (RTDS). The experimental results verify the effectiveness and tracking capability of the proposed controllers and show close agreement with the simulation results. Finally, the comparison with the literature confirms the effectiveness of the proposed control scheme.

Suggested Citation

  • Mohamed A. Hassan & Muhammed Y. Worku & Mohamed A. Abido, 2019. "Optimal Power Control of Inverter-Based Distributed Generations in Grid-Connected Microgrid," Sustainability, MDPI, vol. 11(20), pages 1-27, October.
  • Handle: RePEc:gam:jsusta:v:11:y:2019:i:20:p:5828-:d:278590
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    References listed on IDEAS

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    1. Colmenar-Santos, Antonio & Reino-Rio, Cipriano & Borge-Diez, David & Collado-Fernández, Eduardo, 2016. "Distributed generation: A review of factors that can contribute most to achieve a scenario of DG units embedded in the new distribution networks," Renewable and Sustainable Energy Reviews, Elsevier, vol. 59(C), pages 1130-1148.
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    4. Mohamed A. Hassan & Muhammed Y. Worku & Mohamed A. Abido, 2018. "Optimal Design and Real Time Implementation of Autonomous Microgrid Including Active Load," Energies, MDPI, vol. 11(5), pages 1-16, May.
    5. Ningyun Zhang & Houjun Tang & Chen Yao, 2014. "A Systematic Method for Designing a PR Controller and Active Damping of the LCL Filter for Single-Phase Grid-Connected PV Inverters," Energies, MDPI, vol. 7(6), pages 1-21, June.
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    7. Muhammed Y. Worku & Mohamed A. Hassan & Mohamed A. Abido, 2019. "Real Time Energy Management and Control of Renewable Energy based Microgrid in Grid Connected and Island Modes," Energies, MDPI, vol. 12(2), pages 1-18, January.
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    Cited by:

    1. Mohamed A. Hassan & Muhammed Y. Worku & Abdelfattah A. Eladl & Mohammed A. Abido, 2021. "Dynamic Stability Performance of Autonomous Microgrid Involving High Penetration Level of Constant Power Loads," Mathematics, MDPI, vol. 9(9), pages 1-23, April.
    2. Zahra Malekjamshidi & Mohammad Jafari & Jianguo Zhu & Marco Rivera, 2020. "Design, Implementation, and Stability Analysis of a Space Vector Modulated Direct Matrix Converter for Power Flow Control in a More Reliable and Sustainable Microgrid," Sustainability, MDPI, vol. 12(20), pages 1-26, October.
    3. Ahmed Rashwan & Alexey Mikhaylov & Tomonobu Senjyu & Mahdiyeh Eslami & Ashraf M. Hemeida & Dina S. M. Osheba, 2023. "Modified Droop Control for Microgrid Power-Sharing Stability Improvement," Sustainability, MDPI, vol. 15(14), pages 1-19, July.
    4. Fazel Mohammadi, 2020. "Integration of AC/DC Microgrids into Power Grids," Sustainability, MDPI, vol. 12(8), pages 1-4, April.
    5. Yun-Seok Ko & Su-Hwan Kim & Gyoung-Hwan Lim, 2022. "Miniaturized Distributed Generation for a Micro Smart Grid Simulator," Energies, MDPI, vol. 15(4), pages 1-18, February.

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