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Active Stabilization Control of Multi-Terminal AC/DC Hybrid System Based on Flexible Low-Voltage DC Power Distribution

Author

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  • Wei Deng

    (Institute of Electrical Engineering, Chinese Academy of Sciences, No. 6 Beiertiao, Zhongguancun, Beijing 100190, China
    The School of Electronic, Electrical and Communication Engineering (EECE), University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, China)

  • Wei Pei

    (Institute of Electrical Engineering, Chinese Academy of Sciences, No. 6 Beiertiao, Zhongguancun, Beijing 100190, China
    The School of Electronic, Electrical and Communication Engineering (EECE), University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, China)

  • Luyang Li

    (Institute of Electrical Engineering, Chinese Academy of Sciences, No. 6 Beiertiao, Zhongguancun, Beijing 100190, China
    The School of Electronic, Electrical and Communication Engineering (EECE), University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, China)

Abstract

Multi-terminal AC/DC interconnection will be an important form of future distribution networks. In a multi-terminal AC/DC system, if scheduled power for the AC/DC converter exceeds limits this may result in instability of the DC network. In order to overcome these limitations and avoid an unstable situation during coordinated control, this paper proposes a general active stabilization method for a low-voltage multi-terminal AC/DC hybrid system. First, the typical coordinated control modes for a hybrid system are analyzed. Second, a multi-level active stabilization controller, using the Lyapunov method, is introduced, and a feedback law allowing large signal stability is proposed. Finally, a system simulation model is further established, and the proposed active stabilization method is tested and verified. Study results show that only low stabilizing power with a slight influence on the DC network dynamic can improve the system’s stability and ensure stable system voltage.

Suggested Citation

  • Wei Deng & Wei Pei & Luyang Li, 2018. "Active Stabilization Control of Multi-Terminal AC/DC Hybrid System Based on Flexible Low-Voltage DC Power Distribution," Energies, MDPI, vol. 11(3), pages 1-20, February.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:3:p:502-:d:133591
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    References listed on IDEAS

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    1. Wei Deng & Wei Pei & Ziqi Shen & Zhenxing Zhao & Hui Qu, 2015. "Adaptive Micro-Grid Operation Based on IEC 61850," Energies, MDPI, vol. 8(5), pages 1-21, May.
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    Cited by:

    1. Sohail Sarwar & Desen Kirli & Michael M. C. Merlin & Aristides E. Kiprakis, 2022. "Major Challenges towards Energy Management and Power Sharing in a Hybrid AC/DC Microgrid: A Review," Energies, MDPI, vol. 15(23), pages 1-30, November.
    2. Thai-Thanh Nguyen & Hyeong-Jun Yoo & Hak-Man Kim & Huy Nguyen-Duc, 2018. "Direct Phase Angle and Voltage Amplitude Model Predictive Control of a Power Converter for Microgrid Applications," Energies, MDPI, vol. 11(9), pages 1-21, August.
    3. Zheng Wu & Laifu Li & Yubo Yuan & Xiaodong Yuan & Chenyu Zhang & Li Kong & Wei Pei & Wei Deng, 2020. "Research on Additional Control Technology Based on Energy Storage System for Improving Power Transfer Capacity of Multi-Terminal AC/DC System with Low Cost," Energies, MDPI, vol. 13(2), pages 1-20, January.
    4. Jianquan Liao & Niancheng Zhou & Qianggang Wang, 2018. "Design of Low-Ripple and Fast-Response DC Filters in DC Distribution Networks," Energies, MDPI, vol. 11(11), pages 1-20, November.
    5. Jinhong Ahn & Eel-Hwan Kim, 2019. "Implementation of a Microgrid Scheme Using a MVDC Connection between Gapado Island and Marado Island in South Korea," Energies, MDPI, vol. 12(1), pages 1-22, January.

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