Analysis of Frequency-Dependent Network Equivalents in Dynamic Harmonic Domain

Karami, E; Hajipour, E; Vakilian, M; Rouzbehi, K

Analysis of Frequency-Dependent Network Equivalents in Dynamic Harmonic Domain

Karami, E Hajipour, E Vakilian, M Rouzbehi, K

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Publisher:: ELSEVIER SCIENCE SA
Publication Type:: Journal Article
Citation:: Electric Power Systems Research, 2021, 193
Issue Date:: 2021-04-01

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Field	Value	Language
dc.contributor.author	Karami, E
dc.contributor.author	Hajipour, E
dc.contributor.author	Vakilian, M
dc.contributor.author	Rouzbehi, K https://orcid.org/0000-0002-3623-4840
dc.date.accessioned	2022-03-12T04:24:11Z
dc.date.available	2022-03-12T04:24:11Z
dc.date.issued	2021-04-01
dc.identifier.citation	Electric Power Systems Research, 2021, 193
dc.identifier.issn	0378-7796
dc.identifier.issn	1873-2046
dc.identifier.uri	http://hdl.handle.net/10453/155163
dc.description.abstract	Rational function-based models have proved to be very efficient for accurate frequency-dependent modeling of power system components. These models are able to characterize the components terminal behaviours (analysing the admittance matrix) for nodal analysis. This provides a fast convergence and inherent stability to the solution routine of the model. This work presents a general framework for interfacing the dynamic phasor method to the rational models. That would be promising for the electromagnetic transient analysis (under harmonic distortion), in the frequency domain. Therefore, Y-element rational pole-residue models (employing the vector fitting method) are developed. Moreover, the pole-residue model is converted into the state-space representation. Next, the dynamic harmonic approach (in the frequency domain) is employed for harmonic analysis. It is shown that the order of state-space system can become a major concern for frequency-dependent networks analysis. Therefore, to generate a reduced-order model, the balanced realization theory is applied. Moreover, (for the sake of simplicity and efficiency) the trapezoidal integration rule is employed to discretise the state-space equations. For validation of the modelling, it is applied on three test case studies and results of these studies are compared with their time-domain analysis results.
dc.language	English
dc.publisher	ELSEVIER SCIENCE SA
dc.relation.ispartof	Electric Power Systems Research
dc.relation.isbasedon	10.1016/j.epsr.2021.107037
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering
dc.subject.classification	Energy
dc.title	Analysis of Frequency-Dependent Network Equivalents in Dynamic Harmonic Domain
dc.type	Journal Article
utslib.citation.volume	193
utslib.for	0906 Electrical and Electronic Engineering
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	*
dc.date.updated	2022-03-12T04:24:09Z
pubs.publication-status	Published
pubs.volume	193

Abstract:

Rational function-based models have proved to be very efficient for accurate frequency-dependent modeling of power system components. These models are able to characterize the components terminal behaviours (analysing the admittance matrix) for nodal analysis. This provides a fast convergence and inherent stability to the solution routine of the model. This work presents a general framework for interfacing the dynamic phasor method to the rational models. That would be promising for the electromagnetic transient analysis (under harmonic distortion), in the frequency domain. Therefore, Y-element rational pole-residue models (employing the vector fitting method) are developed. Moreover, the pole-residue model is converted into the state-space representation. Next, the dynamic harmonic approach (in the frequency domain) is employed for harmonic analysis. It is shown that the order of state-space system can become a major concern for frequency-dependent networks analysis. Therefore, to generate a reduced-order model, the balanced realization theory is applied. Moreover, (for the sake of simplicity and efficiency) the trapezoidal integration rule is employed to discretise the state-space equations. For validation of the modelling, it is applied on three test case studies and results of these studies are compared with their time-domain analysis results.

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http://hdl.handle.net/10453/155163