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Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators

Author

Listed:
  • Hyeon-Jin Moon

    (Department of Electrical and Computer Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, Korea)

  • Young Jin Kim

    (Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 37673, Korea)

  • Jae Won Chang

    (Department of Electrical and Computer Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, Korea)

  • Seung-Il Moon

    (Department of Electrical and Computer Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, Korea)

Abstract

Remote microgrids with battery energy storage systems (BESSs), diesel generators, and renewable energy sources (RESs) have recently received significant attention because of their improved power quality and remarkable capability of continuous power supply to loads. In this paper, a new proportional control method is proposed using frequency-bus-signaling to achieve real-time power balance continuously under an abnormal condition of short-term power shortage in a remote microgrid. Specifically, in the proposed method, the frequency generated by the grid-forming BESS is used as a global signal and, based on the signal, a diesel generator is then controlled indirectly. The frequency is controlled to be proportional to the AC voltage deviation of the grid-forming BESS to detect sudden power shortages and share active power with other generators. Unlike a conventional constant-voltage constant-frequency (CVCF) control method, the proposed method can be widely applied to optimise the use of distributed energy resources (DERs), while maintaining microgrid voltages within an allowable range, particularly when active power balance cannot be achieved only using CVCF control. For case studies, a comprehensive model of an isolated microgrid is developed using real data. Simulation results are obtained using MATLAB/Simulink to verify the effectiveness of the proposed method in improving primary active power control in the microgrid.

Suggested Citation

  • Hyeon-Jin Moon & Young Jin Kim & Jae Won Chang & Seung-Il Moon, 2019. "Decentralised Active Power Control Strategy for Real-Time Power Balance in an Isolated Microgrid with an Energy Storage System and Diesel Generators," Energies, MDPI, vol. 12(3), pages 1-22, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:3:p:511-:d:203816
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    References listed on IDEAS

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    Cited by:

    1. Hyun Shin & Sang Heon Chae & Eel-Hwan Kim, 2021. "Unbalanced Current Reduction Method of Microgrid Based on Power Conversion System Operation," Energies, MDPI, vol. 14(13), pages 1-16, June.
    2. Md Masud Rana & Mohamed Atef & Md Rasel Sarkar & Moslem Uddin & GM Shafiullah, 2022. "A Review on Peak Load Shaving in Microgrid—Potential Benefits, Challenges, and Future Trend," Energies, MDPI, vol. 15(6), pages 1-17, March.
    3. Dariusz Tarnapowicz & Sergey German-Galkin & Marek Staude, 2021. "Investigation Concerning the Excitation Loss of Synchronous Generators in a Stand-Alone Ship Power Plant," Energies, MDPI, vol. 14(10), pages 1-17, May.
    4. Jae-Won Chang & Gyu-Sub Lee & Hyeon-Jin Moon & Mark B. Glick & Seung-Il Moon, 2019. "Coordinated Frequency and State-of-Charge Control with Multi-Battery Energy Storage Systems and Diesel Generators in an Isolated Microgrid," Energies, MDPI, vol. 12(9), pages 1-16, April.
    5. Byeong-Cheol Jeong & Dong-Hwan Shin & Jae-Beom Im & Jae-Young Park & Young-Jin Kim, 2019. "Implementation of Optimal Two-Stage Scheduling of Energy Storage System Based on Big-Data-Driven Forecasting—An Actual Case Study in a Campus Microgrid," Energies, MDPI, vol. 12(6), pages 1-20, March.
    6. Sergey German-Galkin & Dariusz Tarnapowicz & Zbigniew Matuszak & Marek Jaskiewicz, 2020. "Optimization to Limit the Effects of Underloaded Generator Sets in Stand-Alone Hybrid Ship Grids," Energies, MDPI, vol. 13(3), pages 1-19, February.
    7. Pedro Faria & Zita Vale, 2019. "Distributed Energy Resources Management 2018," Energies, MDPI, vol. 13(1), pages 1-4, December.
    8. Ganggang Tu & Yanjun Li & Ji Xiang, 2019. "Analysis, Control and Optimal Placement of Static Synchronous Compensator with/without Battery Energy Storage," Energies, MDPI, vol. 12(24), pages 1-20, December.

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