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An Accurate Power Flow Method for Microgrids with Conventional Droop Control

Author

Listed:
  • Fang Lu

    (College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150009, China)

  • Hongda Liu

    (Yantai Research Institute, Harbin Engineering University, Harbin 150009, China)

Abstract

With conventional droop control, the droop relationship between the voltage and reactive power is not purely linear because of the filter reactance. This paper focuses on the theoretical analysis to account for this characteristic and presents a precise power flow method for conventional droop control. The proposed method is universal, which can handle not only conventional droop control, but also other control strategies, such as robust droop control, constant power control, and constant voltage–frequency control. It can also handle frequency-dependent active and reactive power loads and is adapted for islanded and grid-connected systems. The proposed method extends the applicability of conventional power flow methods to microgrids so that the framework of the method is generic; any conventional power flow algorithm can be adapted to this framework. Compared with the time-domain simulation method, the proposed method is accurate, simple, and easy to implement for industrial applications.

Suggested Citation

  • Fang Lu & Hongda Liu, 2022. "An Accurate Power Flow Method for Microgrids with Conventional Droop Control," Energies, MDPI, vol. 15(16), pages 1-15, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:16:p:5841-:d:886004
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    References listed on IDEAS

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    1. Planas, Estefanía & Andreu, Jon & Gárate, José Ignacio & Martínez de Alegría, Iñigo & Ibarra, Edorta, 2015. "AC and DC technology in microgrids: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 726-749.
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    Cited by:

    1. Mingshen Li & Jose Matas & Jorge El Mariachet & Carlos Gustavo C. Branco & Josep M. Guerrero, 2022. "A Fast Power Calculation Algorithm for Three-Phase Droop-Controlled-Inverters Using Combined SOGI Filters and Considering Nonlinear Loads," Energies, MDPI, vol. 15(19), pages 1-16, October.
    2. Abhimanyu Kumar & Abhishek Kumar & Rammohan Mallipeddi & Dong-Gyu Lee, 2022. "Adaptive Backward/Forward Sweep for Solving Power Flow of Islanded Microgrids," Energies, MDPI, vol. 15(24), pages 1-16, December.
    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. Hussain A. Alhaiz & Ahmed S. Alsafran & Ali H. Almarhoon, 2023. "Single-Phase Microgrid Power Quality Enhancement Strategies: A Comprehensive Review," Energies, MDPI, vol. 16(14), pages 1-28, July.

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