Analytical modeling and inertia estimation of VSG-controlled Type 4 WTGs: Power system frequency response investigation

Heidary Yazdi, SS; Milimonfared, J; Fathi, SH; Rouzbehi, K; Rakhshani, E

Analytical modeling and inertia estimation of VSG-controlled Type 4 WTGs: Power system frequency response investigation

Heidary Yazdi, SS Milimonfared, J Fathi, SH Rouzbehi, K

Rakhshani, E

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Publication Type:: Journal Article
Citation:: International Journal of Electrical Power and Energy Systems, 2019, 107 pp. 446 - 461
Issue Date:: 2019-05-01

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Field	Value	Language
dc.contributor.author	Heidary Yazdi, SS	en_US
dc.contributor.author	Milimonfared, J	en_US
dc.contributor.author	Fathi, SH	en_US
dc.contributor.author	Rouzbehi, K https://orcid.org/0000-0002-3623-4840	en_US
dc.contributor.author	Rakhshani, E	en_US
dc.date.issued	2019-05-01	en_US
dc.identifier.citation	International Journal of Electrical Power and Energy Systems, 2019, 107 pp. 446 - 461	en_US
dc.identifier.issn	0142-0615	en_US
dc.identifier.uri	http://hdl.handle.net/10453/134874
dc.description.abstract	© 2018 This paper develops a model to study the inertial dynamics of single Type 4 Wind Turbine Generator (WTG)s that emulate the response of grid-friendly Virtual Synchronous Generator (VSG)s. In this vein, a simplified linearized model is developed for the WTG in the electromechanical time scale considering complete WTG dynamics to obtain/investigate the power System Frequency Response (SFR) characteristics. The objectives are to obtain virtual frequency motion equation, present the mechanism of inertia provision clearly, and feature physical interpretations of inertial frequency response. Accordingly, the available inertia constant and damping coefficient are estimated/expressed analytically in frequency-domain that synthetically embed the impacts of key control parameters as well as the initial operating points. It is realized that the available inertia constant and damping coefficient are adjustable and frequency dependent in contrast to that's manifested by a conventional synchronous generator. The developed virtual frequency motion equation is used in turn to establish/investigate the complete SFR model of a generic test power grid which features enormous wind power generation capacity factor. The theoretical analysis shows that the SFR attributes could get adjusted/enhanced by proper tuning of the WTG control parameters. Comprehensive and comparative time domain simulations are also performed in the MATLAB/Simulink platform. It is to verify the accuracy of the proposed models in the evaluation of SFR characteristics and authenticate the theoretical analysis.	en_US
dc.relation.ispartof	International Journal of Electrical Power and Energy Systems	en_US
dc.relation.isbasedon	10.1016/j.ijepes.2018.11.025	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Energy	en_US
dc.title	Analytical modeling and inertia estimation of VSG-controlled Type 4 WTGs: Power system frequency response investigation	en_US
dc.type	Journal Article
utslib.citation.volume	107	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US
pubs.volume	107	en_US

Abstract:

© 2018 This paper develops a model to study the inertial dynamics of single Type 4 Wind Turbine Generator (WTG)s that emulate the response of grid-friendly Virtual Synchronous Generator (VSG)s. In this vein, a simplified linearized model is developed for the WTG in the electromechanical time scale considering complete WTG dynamics to obtain/investigate the power System Frequency Response (SFR) characteristics. The objectives are to obtain virtual frequency motion equation, present the mechanism of inertia provision clearly, and feature physical interpretations of inertial frequency response. Accordingly, the available inertia constant and damping coefficient are estimated/expressed analytically in frequency-domain that synthetically embed the impacts of key control parameters as well as the initial operating points. It is realized that the available inertia constant and damping coefficient are adjustable and frequency dependent in contrast to that's manifested by a conventional synchronous generator. The developed virtual frequency motion equation is used in turn to establish/investigate the complete SFR model of a generic test power grid which features enormous wind power generation capacity factor. The theoretical analysis shows that the SFR attributes could get adjusted/enhanced by proper tuning of the WTG control parameters. Comprehensive and comparative time domain simulations are also performed in the MATLAB/Simulink platform. It is to verify the accuracy of the proposed models in the evaluation of SFR characteristics and authenticate the theoretical analysis.

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http://hdl.handle.net/10453/134874