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Universal Power Flow Algorithm for Bipolar Multi-Terminal VSC-HVDC

Author

Listed:
  • Zhou Li

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Yan He

    (Nanjing Power Supply Company of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210019, China)

  • Ting-Quan Zhang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Xiao-Ping Zhang

    (Department of Electronic Electrical and Systems Engineering, School of Engineering, University of Birmingham, Birmingham B15 2TT, UK)

Abstract

An effective and accurate power flow algorithm provides control references for active power dispatch and initial steady state operating points, used for stability analysis, short-circuit calculations, and electromagnetic transient simulations, which is not only a fundamental precondition to analyze the system operating conditions, but also the basis to improve the accuracy of power flow and DC voltage control of the multi-terminal voltage source converter-based high voltage direct current (VSC-HVDC). This paper proposes a nodal voltage-based universal steady-state power flow algorithm for the newly-developed bipolar multi-terminal VSC-HVDC (VSC-MTDC). Firstly, as the positive-pole and negative-pole DC network of the bipolar VSC-MTDC can be operated individually, a bipolar power flow alternating iterative method is proposed here to obtain the positive/negative-pole DC network power flow. Secondly, a series of nodal equivalent methods involving various control strategies are proposed for the universal power flow algorithm. Then the detailed calculation procedure and a general MATLAB(TM) program for the universal power flow algorithm is presented. A typical 4-terminal bipolar VSC-MTDC system was built in the PSCAD/EMTDC to verify the validity of the proposed algorithm, and the results are discussed here. Moreover, the calculation results of more complex bipolar VSC-MTDC systems under different operating conditions, employing the proposed universal power flow algorithm, are presented to illustrate its universality and efficiency.

Suggested Citation

  • Zhou Li & Yan He & Ting-Quan Zhang & Xiao-Ping Zhang, 2020. "Universal Power Flow Algorithm for Bipolar Multi-Terminal VSC-HVDC," Energies, MDPI, vol. 13(5), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1053-:d:325499
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    References listed on IDEAS

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    1. Javier Renedo & Aurelio García-Cerrada & Luis Rouco & Lukas Sigrist, 2019. "Coordinated Control in VSC-HVDC Multi-Terminal Systems to Improve Transient Stability: The Impact of Communication Latency," Energies, MDPI, vol. 12(19), pages 1-32, September.
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    Cited by:

    1. Sangyong Park & Hyosang Choi, 2020. "Operation Characteristics for the Superconducting Arc-Induction Type DC Circuit Breaker," Energies, MDPI, vol. 13(15), pages 1-13, July.
    2. Leandro Almeida Vasconcelos & João Alberto Passos Filho & André Luis Marques Marcato & Giovani Santiago Junqueira, 2021. "A Full-Newton AC-DC Power Flow Methodology for HVDC Multi-Terminal Systems and Generic DC Network Representation," Energies, MDPI, vol. 14(6), pages 1-17, March.
    3. Jae-In Lee & Van Quan Dao & Minh-Chau Dinh & Seok-ju Lee & Chang Soon Kim & Minwon Park, 2021. "Combined Operation Analysis of a Saturated Iron-Core Superconducting Fault Current Limiter and Circuit Breaker for an HVDC System Protection," Energies, MDPI, vol. 14(23), pages 1-18, November.

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