Insights on the provision of frequency support by wind power and the impact on energy systems

Ayman Attya, Jose Luis Dominguez-Garcia

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper implements and compares between the key concepts to enable wind power short-term frequency support from electrical and mechanical loads perspectives. Pitch de-loading, kinetic energy extraction, and wind turbine (WTG) over-speeding are investigated, where each concept is integrated as a supplementary controller to the conventional controls of WTG. Different patterns of wind speed are examined, step-change and real intermittent of high resolution. The examined aggregated synchronous area has a relatively high wind penetration with frequency support. The overall dynamic inertia of the system is assessed to analyze the impact of the integrated support methods and their key parameters. The coordination between synchronous areas and wind farms, which are interconnected through a multiterminal high-voltage direct-current network (MT-HVDC) is examined. A novel definition of the virtual inertia of MT-HVDC grid is proposed. Results show that pitch de-loading secures support reserve most of the time, and kinetic energy extraction provides sustainable support for a short interval, while accelerative de-loading could reach a compromise. The three methods are adaptable with the MT-HVDC holistic frequency support controller, with a slight advantage of kinetic energy extraction over the virtual inertia of the MT-HVDC. MATLAB/Simulink is the simulation environment.

LanguageEnglish
Pages719-728
Number of pages10
JournalIEEE Transactions on Sustainable Energy
Volume9
Issue number2
Early online date5 Oct 2017
DOIs
Publication statusPublished - Apr 2018
Externally publishedYes

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Wind power
Kinetic energy
Electric potential
Controllers
Wind turbines
Farms
MATLAB

Cite this

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title = "Insights on the provision of frequency support by wind power and the impact on energy systems",
abstract = "This paper implements and compares between the key concepts to enable wind power short-term frequency support from electrical and mechanical loads perspectives. Pitch de-loading, kinetic energy extraction, and wind turbine (WTG) over-speeding are investigated, where each concept is integrated as a supplementary controller to the conventional controls of WTG. Different patterns of wind speed are examined, step-change and real intermittent of high resolution. The examined aggregated synchronous area has a relatively high wind penetration with frequency support. The overall dynamic inertia of the system is assessed to analyze the impact of the integrated support methods and their key parameters. The coordination between synchronous areas and wind farms, which are interconnected through a multiterminal high-voltage direct-current network (MT-HVDC) is examined. A novel definition of the virtual inertia of MT-HVDC grid is proposed. Results show that pitch de-loading secures support reserve most of the time, and kinetic energy extraction provides sustainable support for a short interval, while accelerative de-loading could reach a compromise. The three methods are adaptable with the MT-HVDC holistic frequency support controller, with a slight advantage of kinetic energy extraction over the virtual inertia of the MT-HVDC. MATLAB/Simulink is the simulation environment.",
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author = "Ayman Attya and Dominguez-Garcia, {Jose Luis}",
note = "{\circledC} {\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. A. B. T. Attya and J. L. Dominguez-Garc{\'i}a, {"}Insights on the Provision of Frequency Support by Wind Power and the Impact on Energy Systems,{"} in IEEE Transactions on Sustainable Energy, vol. 9, no. 2, pp. 719-728, April 2018. doi: 10.1109/TSTE.2017.2759503 keywords: {Acceleration;Frequency control;Kinetic energy;Rotors;Torque;Wind power generation;Wind speed;Ancillary services;HVDC;frequency stability;load fatigue;virtual inertia;wind power}, URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8059865&isnumber=8320232",
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Insights on the provision of frequency support by wind power and the impact on energy systems. / Attya, Ayman; Dominguez-Garcia, Jose Luis.

In: IEEE Transactions on Sustainable Energy, Vol. 9, No. 2, 04.2018, p. 719-728.

Research output: Contribution to journalArticle

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