Decentralised control of DC microgrid based on virtual admittance to enhance DC voltage and grid frequency support

Research output: Contribution to conferencePaper

Abstract

DC microgrid technology has become one of key smart grid research topics in recent years. In comparison to AC microgrids, DC microgrids are more manageable to operate in grid-connected and islanded modes, and also offering improved efficiency and better controllability. Services, such as voltages and AC system frequency support can also be potentially provided by optimally controlling the DC microgrids converter interfaces and their local distributed energy resources. These will require a good understanding of the dynamic interactions between the DC microgrid and the host AC system, and implementation of the appropriate control strategies. This paper investigates the dynamic resilience of a DC microgrid connected to an AC system under different frequency and voltage disturbances. A decentralised droop control strategy within the DC microgrid is used for fast active power control and wider system frequency support. A virtual admittance method is also utilised to enhance the local DC microgrid voltages during the AC frequency events and DC fault test scenarios. The effectiveness of the control strategy is evaluated by simulation studies in MATLAB/Simulink.

Conference

ConferenceThe 53rd International Universities Power Engineering Conference
Abbreviated titleUPEC2018
CountryUnited Kingdom
CityGlasgow
Period4/09/187/09/18
Internet address

Fingerprint

Decentralized control
Electric potential
Energy resources
Controllability
Power control
MATLAB

Keywords

  • DC microgrids
  • grid frequency support
  • DC voltage enhancement
  • decentralised control strategy

Cite this

Yana, S., Florida James, A., Emhemed, A., & Burt, G. (2018). Decentralised control of DC microgrid based on virtual admittance to enhance DC voltage and grid frequency support. Paper presented at The 53rd International Universities Power Engineering Conference, Glasgow , United Kingdom.
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title = "Decentralised control of DC microgrid based on virtual admittance to enhance DC voltage and grid frequency support",
abstract = "DC microgrid technology has become one of key smart grid research topics in recent years. In comparison to AC microgrids, DC microgrids are more manageable to operate in grid-connected and islanded modes, and also offering improved efficiency and better controllability. Services, such as voltages and AC system frequency support can also be potentially provided by optimally controlling the DC microgrids converter interfaces and their local distributed energy resources. These will require a good understanding of the dynamic interactions between the DC microgrid and the host AC system, and implementation of the appropriate control strategies. This paper investigates the dynamic resilience of a DC microgrid connected to an AC system under different frequency and voltage disturbances. A decentralised droop control strategy within the DC microgrid is used for fast active power control and wider system frequency support. A virtual admittance method is also utilised to enhance the local DC microgrid voltages during the AC frequency events and DC fault test scenarios. The effectiveness of the control strategy is evaluated by simulation studies in MATLAB/Simulink.",
keywords = "DC microgrids, grid frequency support, DC voltage enhancement, decentralised control strategy",
author = "Syiska Yana and {Florida James}, Anthony and Abdullah Emhemed and Graeme Burt",
note = "{\circledC} 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.; The 53rd International Universities Power Engineering Conference, UPEC2018 ; Conference date: 04-09-2018 Through 07-09-2018",
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Yana, S, Florida James, A, Emhemed, A & Burt, G 2018, 'Decentralised control of DC microgrid based on virtual admittance to enhance DC voltage and grid frequency support' Paper presented at The 53rd International Universities Power Engineering Conference, Glasgow , United Kingdom, 4/09/18 - 7/09/18, .

Decentralised control of DC microgrid based on virtual admittance to enhance DC voltage and grid frequency support. / Yana, Syiska; Florida James, Anthony; Emhemed, Abdullah; Burt, Graeme.

2018. Paper presented at The 53rd International Universities Power Engineering Conference, Glasgow , United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Decentralised control of DC microgrid based on virtual admittance to enhance DC voltage and grid frequency support

AU - Yana,Syiska

AU - Florida James,Anthony

AU - Emhemed,Abdullah

AU - Burt,Graeme

N1 - © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2018/9/4

Y1 - 2018/9/4

N2 - DC microgrid technology has become one of key smart grid research topics in recent years. In comparison to AC microgrids, DC microgrids are more manageable to operate in grid-connected and islanded modes, and also offering improved efficiency and better controllability. Services, such as voltages and AC system frequency support can also be potentially provided by optimally controlling the DC microgrids converter interfaces and their local distributed energy resources. These will require a good understanding of the dynamic interactions between the DC microgrid and the host AC system, and implementation of the appropriate control strategies. This paper investigates the dynamic resilience of a DC microgrid connected to an AC system under different frequency and voltage disturbances. A decentralised droop control strategy within the DC microgrid is used for fast active power control and wider system frequency support. A virtual admittance method is also utilised to enhance the local DC microgrid voltages during the AC frequency events and DC fault test scenarios. The effectiveness of the control strategy is evaluated by simulation studies in MATLAB/Simulink.

AB - DC microgrid technology has become one of key smart grid research topics in recent years. In comparison to AC microgrids, DC microgrids are more manageable to operate in grid-connected and islanded modes, and also offering improved efficiency and better controllability. Services, such as voltages and AC system frequency support can also be potentially provided by optimally controlling the DC microgrids converter interfaces and their local distributed energy resources. These will require a good understanding of the dynamic interactions between the DC microgrid and the host AC system, and implementation of the appropriate control strategies. This paper investigates the dynamic resilience of a DC microgrid connected to an AC system under different frequency and voltage disturbances. A decentralised droop control strategy within the DC microgrid is used for fast active power control and wider system frequency support. A virtual admittance method is also utilised to enhance the local DC microgrid voltages during the AC frequency events and DC fault test scenarios. The effectiveness of the control strategy is evaluated by simulation studies in MATLAB/Simulink.

KW - DC microgrids

KW - grid frequency support

KW - DC voltage enhancement

KW - decentralised control strategy

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M3 - Paper

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Yana S, Florida James A, Emhemed A, Burt G. Decentralised control of DC microgrid based on virtual admittance to enhance DC voltage and grid frequency support. 2018. Paper presented at The 53rd International Universities Power Engineering Conference, Glasgow , United Kingdom.