Review of HVDC control in weak AC grids

[Display omitted] •Short circuit ratio in weak AC grids for HVDC transmission lines is introduced.•A summary of LCC-HVDC systems control in weak AC grids is discussed.•Compensation algorithms for weak AC grid integration of LCC-HVDC are covered.•Force commutated converter-based HVDC system is introd...

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Bibliographic Details
Published in:Electric power systems research 2018-09, Vol.162, p.194-206
Main Authors: Khazaei, Javad, Idowu, Peter, Asrari, Arash, Shafaye, AB, Piyasinghe, Lakshan
Format: Article
Language:English
Subjects:
Converters
Current sources
Direct current
Electric currents
Electric potential
Electric power
Electric power lines
Electric power transmission
High Voltage Direct Current
High voltages
Power reliability
Power synchronization control
Reliability analysis
Short Circuit Ratio
Vector control
Weak AC grids
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Summary:[Display omitted] •Short circuit ratio in weak AC grids for HVDC transmission lines is introduced.•A summary of LCC-HVDC systems control in weak AC grids is discussed.•Compensation algorithms for weak AC grid integration of LCC-HVDC are covered.•Force commutated converter-based HVDC system is introduced.•VSC and CSC-based HVDC systems are discussed.•Control structures for VSC-HVDC and CSC-HVDC systems are introduced.•An active compensation algorithm for LCC-HVDC in weak AC grids is elaborated.•Power synchronization and advanced vector control methods are covered.•Reliability study is carried out for various HVDC technologies in weak AC grids. Interconnection of High Voltage Direct Current (HVDC) transmission systems to a weak AC grid has been a challenge in recent years. The main target of this paper is to provide a comprehensive review of the “converter control” approaches for: (1) the Line Commutated Converter (LCC)-based HVDC and (2) the forced commutated converter-based HVDC systems in weak AC grids. The control architecture for each HVDC technology (forced commutated and line commutated) is included. The stability limitations associated with HVDC systems, including LCC-HVDC, Voltage Source Converter (VSC)-based HVDC, and the Current Source Converter (CSC)-based HVDC, are elaborated. Moreover, the most recent control approaches for possible integration of LCC-HVDC and VSC-HVDC to very weak AC grids are introduced. Finally, the reliability modeling for each HVDC technology in weak AC grid integration is included for corrective and preventive reliability analysis.
ISSN:0378-7796
1873-2046
DOI:10.1016/j.epsr.2018.05.022