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Interactions Between Indirect DC-Voltage Estimation and Circulating Current Controllers of MMC-Based HVDC Transmission Systems

  • Harith R. Wickramasinghe*
  • , Georgios Konstantinou
  • , Josep Pou
  • , Vassilios Agelidis
  • *Corresponding author for this work
    • Nanyang Technological University
    • University of New South Wales

    Research output: Contribution to journal › Journal article › Research › peer-review

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    Abstract

    Estimation-based indirect dc-voltage control in MMCs interacts with circulating current control methods. This paper proposes an estimation-based indirect dc-voltage control method for MMC-HVDC systems and analyzes its performance compared to alternative estimations. The interactions between estimation-based indirect dc-voltage control and circulating current control methods, active/reactive power regulation are also investigated. The proposed method delivers similar performance to measurement-based direct dc-voltage control, regardless of the circulating current control method. Steady-state and transient performance is demonstrated using a benchmark MMC-HVDC transmission system, implemented in a real-time digital simulator. The results verify the theoretical evaluations and illustrate the operation and performance of the proposed indirect dc-voltage control method.
    Original languageEnglish
    JournalIEEE Transactions on Power Systems
    Volume33
    Issue number1
    Pages (from-to)829-838
    Number of pages10
    ISSN0885-8950
    DOIs
    Publication statusPublished - 2018

    Keywords

    • Dc-voltage estimation
    • Dc-voltage control
    • High voltage direct current
    • Modular multilevel converter
    • Real-time digital simulator

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