Hierarchical control implementation for meshed AC/multi-terminal DC grids with offshore windfarms integration

F. Akhter; S. S. H.  Bukhari; F. H. Mangi; D. E. Macpherson; G. P. Harrison; W. Bukhsh; J. S.  Ro

doi:10.1109/ACCESS.2019.2944718

Hierarchical control implementation for meshed AC/multi-terminal DC grids with offshore windfarms integration

F. Akhter, S. S. H. Bukhari, F. H. Mangi, D. E. Macpherson, G. P. Harrison, W. Bukhsh, J. S. Ro

Electronic And Electrical Engineering

Research output: Contribution to journal › Article

5 Citations (Scopus)

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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 systems. 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
Number of pages	19
Journal	IEEE Access
DOIs	https://doi.org/10.1109/ACCESS.2019.2944718
Publication status	Published - 30 Sep 2019

Keywords

AC multi-terminal direct current grid
droop control
optimized operation
power flow control

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title = "Hierarchical control implementation for meshed AC/multi-terminal DC grids with offshore windfarms integration",

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 systems. 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.",

keywords = "AC multi-terminal direct current grid, droop control, optimized operation, power flow control",

author = "F. Akhter and Bukhari, {S. S. H.} and Mangi, {F. H.} and Macpherson, {D. E.} and Harrison, {G. P.} and W. Bukhsh and Ro, {J. S.}",

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doi = "10.1109/ACCESS.2019.2944718",

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AU - Akhter, F.

AU - Bukhari, S. S. H.

AU - Mangi, F. H.

AU - Macpherson, D. E.

AU - Harrison, G. P.

AU - Bukhsh, W.

AU - Ro, J. S.

PY - 2019/9/30

Y1 - 2019/9/30

N2 - 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 systems. 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.

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 systems. 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.

KW - AC multi-terminal direct current grid

KW - droop control

KW - optimized operation

KW - power flow control

U2 - 10.1109/ACCESS.2019.2944718

DO - 10.1109/ACCESS.2019.2944718

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JF - IEEE Access

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