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Voltage Control Scheme with Distributed Generation and Grid Connected Converter in a DC Microgrid

Author

Listed:
  • Jong-Chan Choi

    (Department of Electrical Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Korea)

  • Ho-Yong Jeong

    (Department of Electrical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea)

  • Jin-Young Choi

    (Department of Electrical Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Korea)

  • Dong-Jun Won

    (Department of Electrical Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Korea)

  • Seon-Ju Ahn

    (Department of Electrical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Korea)

  • Seung-il Moon

    (Department of Electrical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea)

Abstract

Direct Current (DC) microgrids are expected to become larger due to the rapid growth of DC energy sources and power loads. As the scale of the system expends, the importance of voltage control will be increased to operate power systems stably. Many studies have been performed on voltage control methods in a DC microgrid, but most of them focused only on a small scale microgrid, such as a building microgrid. Therefore, a new control method is needed for a middle or large scale DC microgrid. This paper analyzes voltage drop problems in a large DC microgrid and proposes a cooperative voltage control scheme with a distributed generator (DG) and a grid connected converter (GCC). For the voltage control with DGs, their location and capacity should be considered for economic operation in the systems. Accordingly, an optimal DG allocation algorithm is proposed to minimize the capacity of a DG for voltage control in DC microgrids. The proposed methods are verified with typical load types by a simulation using MATLAB and PSCAD/EMTDC.

Suggested Citation

  • Jong-Chan Choi & Ho-Yong Jeong & Jin-Young Choi & Dong-Jun Won & Seon-Ju Ahn & Seung-il Moon, 2014. "Voltage Control Scheme with Distributed Generation and Grid Connected Converter in a DC Microgrid," Energies, MDPI, vol. 7(10), pages 1-15, October.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:10:p:6477-6491:d:41056
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    Citations

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    Cited by:

    1. Yiqi Liu & Jianze Wang & Ningning Li & Yu Fu & Yanchao Ji, 2015. "Enhanced Load Power Sharing Accuracy in Droop-Controlled DC Microgrids with Both Mesh and Radial Configurations," Energies, MDPI, vol. 8(5), pages 1-15, April.
    2. Kitson, J. & Williamson, S.J. & Harper, P.W. & McMahon, C.A. & Rosenberg, G. & Tierney, M.J. & Bell, K. & Gautam, B., 2018. "Modelling of an expandable, reconfigurable, renewable DC microgrid for off-grid communities," Energy, Elsevier, vol. 160(C), pages 142-153.
    3. Mahmoud Saleh & Yusef Esa & Mohamed El Hariri & Ahmed Mohamed, 2019. "Impact of Information and Communication Technology Limitations on Microgrid Operation," Energies, MDPI, vol. 12(15), pages 1-24, July.
    4. Juyong Kim & Hongjoo Kim & Jintae Cho & Youngpyo Cho & Yoonsung Cho & Sukcheol Kim, 2020. "Demonstration Study of Voltage Control of DC Grid Using Energy Management System Based DC Applications," Energies, MDPI, vol. 13(17), pages 1-23, September.
    5. Ho-Yong Jeong & Jong-Chan Choi & Dong-Jun Won & Seon-Ju Ahn & Seung-il Moon, 2015. "Formulation and Analysis of an Approximate Expression for Voltage Sensitivity in Radial DC Distribution Systems," Energies, MDPI, vol. 8(9), pages 1-24, August.
    6. Luis Hernández-Callejo, 2019. "A Comprehensive Review of Operation and Control, Maintenance and Lifespan Management, Grid Planning and Design, and Metering in Smart Grids," Energies, MDPI, vol. 12(9), pages 1-50, April.
    7. Trinh Phi Hai & Hector Cho & Il-Yop Chung & Hyun-Koo Kang & Jintae Cho & Juyong Kim, 2017. "A Novel Voltage Control Scheme for Low-Voltage DC Distribution Systems Using Multi-Agent Systems," Energies, MDPI, vol. 10(1), pages 1-20, January.

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