Transient potential distribution on transformer winding considering the effect of core lamination stack

He, S; Huang, D; Feng, X; Deng, J; Li, J; Zhu, J

Transient potential distribution on transformer winding considering the effect of core lamination stack

He, S Huang, D Feng, X Deng, J Li, J Zhu, J

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Publisher:: AMER INST PHYSICS
Publication Type:: Journal Article
Citation:: AIP Advances, 2020, 10, (1)
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	He, S
dc.contributor.author	Huang, D
dc.contributor.author	Feng, X
dc.contributor.author	Deng, J
dc.contributor.author	Li, J
dc.contributor.author	Zhu, J https://orcid.org/0000-0002-9763-4047
dc.date.accessioned	2021-02-09T04:24:07Z
dc.date.available	2021-02-09T04:24:07Z
dc.date.issued	2020-01-01
dc.identifier.citation	AIP Advances, 2020, 10, (1)
dc.identifier.issn	2158-3226
dc.identifier.issn	2158-3226
dc.identifier.uri	http://hdl.handle.net/10453/145981
dc.description.abstract	© 2020 Author(s). The potential distribution of windings under impulse voltage is very important for the design of transformer inter-turn insulation especially for large capacity transformers such as ultra-high voltage direct current (UHVDC) converter transformer. Quite a lot of equivalent circuit models for transformer winding have been proposed for the potential distribution calculation assuming that the influence of magnetic core is negligible at frequencies higher than 10 kHz. However, lightning impulse or VFTO waveforms usually contain abundant frequency components higher than 10 kHz. At above situations the magnetic core plays an important role during the transient procedure. To obtain a more comprehensive model and also to provide a more accurate potential distribution of transformer winding, in this paper, a wide frequency magnetic properties of silicon steel sheet were measured and the relationship between relative permeability of lamination stack and frequency is studied and implemented in the calculation of frequency-dependent parameters such as resistance, self- and mutual-inductances. Then the equivalent circuit model of UHVDC converter transformer is established considering the properties of core lamination stack. Coding the program in MATLAB to solve the matrix equation and the potential distribution properties are extracted from the calculation results under lightning situation. The inter-turn potential distribution is also analyzed and the results may provide more accurate information for transformer inter-turn insulation design.
dc.language	English
dc.publisher	AMER INST PHYSICS
dc.relation.ispartof	AIP Advances
dc.relation.isbasedon	10.1063/1.5130034
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0205 Optical Physics, 0206 Quantum Physics, 0906 Electrical and Electronic Engineering
dc.title	Transient potential distribution on transformer winding considering the effect of core lamination stack
dc.type	Journal Article
utslib.citation.volume	10
utslib.location.activity	Las Vegas, NV
utslib.for	0205 Optical Physics
utslib.for	0206 Quantum Physics
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2021-02-09T04:23:57Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	1

Abstract:

© 2020 Author(s). The potential distribution of windings under impulse voltage is very important for the design of transformer inter-turn insulation especially for large capacity transformers such as ultra-high voltage direct current (UHVDC) converter transformer. Quite a lot of equivalent circuit models for transformer winding have been proposed for the potential distribution calculation assuming that the influence of magnetic core is negligible at frequencies higher than 10 kHz. However, lightning impulse or VFTO waveforms usually contain abundant frequency components higher than 10 kHz. At above situations the magnetic core plays an important role during the transient procedure. To obtain a more comprehensive model and also to provide a more accurate potential distribution of transformer winding, in this paper, a wide frequency magnetic properties of silicon steel sheet were measured and the relationship between relative permeability of lamination stack and frequency is studied and implemented in the calculation of frequency-dependent parameters such as resistance, self- and mutual-inductances. Then the equivalent circuit model of UHVDC converter transformer is established considering the properties of core lamination stack. Coding the program in MATLAB to solve the matrix equation and the potential distribution properties are extracted from the calculation results under lightning situation. The inter-turn potential distribution is also analyzed and the results may provide more accurate information for transformer inter-turn insulation design.

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http://hdl.handle.net/10453/145981