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A Grid-Supporting Photovoltaic System Implemented by a VSG with Energy Storage

Author

Listed:
  • Huadian Xu

    (School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 23009, China)

  • Jianhui Su

    (School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 23009, China)

  • Ning Liu

    (School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 23009, China)

  • Yong Shi

    (School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 23009, China)

Abstract

Conventional photovoltaic (PV) systems interfaced by grid-connected inverters fail to support the grid and participate in frequency regulation. Furthermore, reduced system inertia as a result of the integration of conventional PV systems may lead to an increased frequency deviation of the grid for contingencies. In this paper, a grid-supporting PV system, which can provide inertia and participate in frequency regulation through virtual synchronous generator (VSG) technology and an energy storage unit, is proposed. The function of supporting the grid is implemented in a practical PV system through using the presented control scheme and topology. Compared with the conventional PV system, the grid-supporting PV system, behaving as an inertial voltage source like synchronous generators, has the capability of participating in frequency regulation and providing inertia. Moreover, the proposed PV system can mitigate autonomously the power imbalance between generation and consumption, filter the PV power, and operate without the phase-locked loop after initial synchronization. Performance analysis is conducted and the stability constraint is theoretically formulated. The novel PV system is validated on a modified CIGRE benchmark under different cases, being compared with the conventional PV system. The verifications demonstrate the grid support functions of the proposed PV system.

Suggested Citation

  • Huadian Xu & Jianhui Su & Ning Liu & Yong Shi, 2018. "A Grid-Supporting Photovoltaic System Implemented by a VSG with Energy Storage," Energies, MDPI, vol. 11(11), pages 1-19, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3152-:d:182773
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    References listed on IDEAS

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    1. Henrik Zsiborács & Nóra Hegedűsné Baranyai & András Vincze & István Háber & Gábor Pintér, 2018. "Economic and Technical Aspects of Flexible Storage Photovoltaic Systems in Europe," Energies, MDPI, vol. 11(6), pages 1-17, June.
    2. Gábor Pintér & Nóra Hegedűsné Baranyai & Alec Wiliams & Henrik Zsiborács, 2018. "Study of Photovoltaics and LED Energy Efficiency: Case Study in Hungary," Energies, MDPI, vol. 11(4), pages 1-13, March.
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    Cited by:

    1. Jiaxin Wen & Siqi Bu & Bowen Zhou & Qiyu Chen & Dongsheng Yang, 2020. "A Fast-Algorithmic Probabilistic Evaluation on Regional Rate of Change of Frequency (RoCoF) for Operational Planning of High Renewable Penetrated Power Systems," Energies, MDPI, vol. 13(11), pages 1-14, June.
    2. Duberney Murillo-Yarce & José Alarcón-Alarcón & Marco Rivera & Carlos Restrepo & Javier Muñoz & Carlos Baier & Patrick Wheeler, 2020. "A Review of Control Techniques in Photovoltaic Systems," Sustainability, MDPI, vol. 12(24), pages 1-21, December.
    3. Teuvo Suntio & Tuomas Messo, 2019. "Power Electronics in Renewable Energy Systems," Energies, MDPI, vol. 12(10), pages 1-5, May.
    4. Gayan Abeynayake & Liana Cipcigan & Xiaolin Ding, 2022. "Black Start Capability from Large Industrial Consumers," Energies, MDPI, vol. 15(19), pages 1-25, October.

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