Review on topology‐based dc short‐circuit fault ride‐through strategies for MMC‐based HVDC system. Issue 2 (1st February 2020)

• Record Type: Journal Article
• Authors: Wan, Yihao; Mao, Mingxuan; Zhou, Lin; Xi, Xinze; Xie, Bao; Zhou, Siyu
• Is Part Of: IET power electronics. Volume 13:Issue 2(2020)
• Page Start: 203
• Page End: 220
• Publication Date: 2020-02-01
• Subjects: fault currents -- reactive power -- power convertors -- power transmission faults -- HVDC power transmission -- HVDC power convertors -- static VAr compensators -- power grids; topology‐based -- short‐circuit fault ride‐through strategies -- MMC‐based HVDC system -- modular multilevel converter -- high‐voltage direct‐current transmission system -- bulk power transmission -- renewable energy integration -- conventional half‐bridge submodules MMC topology -- short‐circuit fault analysis -- dc fault current utilising different topologies -- estimated power losses -- fault ride‐through capability -- reactive power compensation capability; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2019.0607
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : Modular multilevel converter (MMC) based high‐voltage direct‐current (HVDC) transmission system is a promising solution to the bulk power transmission over a long distance, especially for renewable energy integration. However, conventional half‐bridge submodules MMC topology is susceptible to dc faults. In this study, dc short‐circuit fault analysis and a review on recent advances in clearing dc fault current utilising different topologies are presented. Furthermore, the MMC can also work as a static synchronous compensator, producing reactive power to support the grid and improving the stability of the system when dc fault occurs. Finally, the comparison for different topologies in terms of device cost, estimated power losses, dc fault ride‐through capability, and reactive power compensation capability is given.