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Computation of internal voltage distribution in transformer windings by utilizing a voltage distribution factor
Higher Coll Technol, Fac ETS, Nahyan 1st St,POB 17155, Al Ain, U Arab Emirates.ORCID iD: 0000-0001-9750-9863
Delft Univ Technol, Fac EEMCS, Mekelweg 4, NL-2628 CD Delft, Netherlands.
Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England.
2016 (English)In: Electric power systems research, ISSN 0378-7796, E-ISSN 1873-2046, Vol. 138, 11-17 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a method for the application of the black-box transformer models to the lumped-parameter transformer winding models is presented. The methodology is based on applying terminal transformer voltages as input parameters that could be provided by using the powerful black box vector fitting. Then, internal voltage distribution is determined by applying a lumped-parameter model approximation. In particular, the paper is focused on the direct computation of the internal voltage distribution, by avoiding a complicated procedure of solving the lumped-parameter winding model. The method is based on the transformation matrix utilization of the voltage distribution factors. This transformation matrix reflects the voltage distribution at specific internal points along the winding with respect to the input terminal voltages. At this stage, the inputs for the lumped-parameters model are provided by measured voltages at transformer terminals and the transformation matrix is determined through geometrical data of the transformer. The implementation of the proposed method with the black-box modeling approach in existing simulation software tools like EMTP is under development. The method is verified by comparing measured with computed waveforms. © 2016 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 138, 11-17 p.
Keyword [en]
Computer software; Linear transformations; Mathematical transformations; Matrix algebra; Metadata; Models; Transients; Voltage distribution measurement; Winding, Internal voltage; Lumped parameter modeling; Lumped-parameters models; Over-voltages; Simulation software tools; Transformation matrices; Transformer; Voltage distribution factor, Transformer windings
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kau:diva-63764DOI: 10.1016/j.epsr.2016.01.001ISI: 000379374300003Scopus ID: 2-s2.0-84955318226OAI: oai:DiVA.org:kau-63764DiVA: diva2:1142072
Available from: 2017-09-18 Created: 2017-09-18 Last updated: 2017-09-19Bibliographically approved

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