Hierarchical Control Implementation for Meshed AC/Multi-terminal DC Grids with Offshore Windfarms Integration

Faheem Akhter; S. Bukhari; F Mangi; D. Ewen Macpherson; Gareth P. Harrison; Waqquas Buhksh; J-S Ro

doi:10.1109/ACCESS.2019.2944718

Hierarchical Control Implementation for Meshed AC/Multi-terminal DC Grids with Offshore Windfarms Integration

Faheem Akhter, S. Bukhari, F Mangi, D. Ewen Macpherson, Gareth P. Harrison, Waqquas Buhksh, J-S Ro

Research output: Contribution to journal › Article › peer-review

Abstract

Although the integration of meshed multi-terminal direct current (MTDC) grids with the existing AC grid has some added economic advantages, significant challenges are encountered in such system. One of the major challenges is ensuring secure and optimal operation of the combined AC/MTDC grid considering the stability requirements of AC and DC grids at different operating conditions. This paper presents the implementation of hierarchical control for the combined AC/MTDC grid. The hierarchical control is based on the well-established three-layered control of the AC power system, comprising primary,
secondary, and tertiary controls. A set of appropriate control methods are proposed for the primary, secondary, and tertiary control layers to accomplish the identified requirements for secure and optimal operation of the combined AC/MTDC grid.

Original language	English
Pages (from-to)	142233
Number of pages	142245
Journal	IEEE Access
Volume	7
Issue number	1
Early online date	2 Oct 2019
DOIs	https://doi.org/10.1109/ACCESS.2019.2944718
Publication status	Published - 11 Oct 2019

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abstract = "Although the integration of meshed multi-terminal direct current (MTDC) grids with the existing AC grid has some added economic advantages, significant challenges are encountered in such system. One of the major challenges is ensuring secure and optimal operation of the combined AC/MTDC grid considering the stability requirements of AC and DC grids at different operating conditions. This paper presents the implementation of hierarchical control for the combined AC/MTDC grid. The hierarchical control is based on the well-established three-layered control of the AC power system, comprising primary,secondary, and tertiary controls. A set of appropriate control methods are proposed for the primary, secondary, and tertiary control layers to accomplish the identified requirements for secure and optimal operation of the combined AC/MTDC grid.",

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AU - Akhter, Faheem

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AU - Macpherson, D. Ewen

AU - Harrison, Gareth P.

AU - Buhksh, Waqquas

AU - Ro, J-S

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AB - Although the integration of meshed multi-terminal direct current (MTDC) grids with the existing AC grid has some added economic advantages, significant challenges are encountered in such system. One of the major challenges is ensuring secure and optimal operation of the combined AC/MTDC grid considering the stability requirements of AC and DC grids at different operating conditions. This paper presents the implementation of hierarchical control for the combined AC/MTDC grid. The hierarchical control is based on the well-established three-layered control of the AC power system, comprising primary,secondary, and tertiary controls. A set of appropriate control methods are proposed for the primary, secondary, and tertiary control layers to accomplish the identified requirements for secure and optimal operation of the combined AC/MTDC grid.

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Hierarchical Control Implementation for Meshed AC/Multi-terminal DC Grids with Offshore Windfarms Integration

Abstract

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