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Modeling of Partial Discharge in Transformer Winding by Multi-Conductor Transmission Line Model
Islamic Azad Univ, S Tehran branch, Tehran, Iran.
Sharif Univ Technol, Tehran, Iran.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0003-1766-8077
2012 (English)In: International Review of Electrical Engineering, ISSN 1827-6660, Vol. 7, no 2, 3926-3934 p.Article in journal (Refereed) Published
Abstract [en]

To locate accurately the occurrence of a partial discharge in a power transformer winding, a wide frequency band model of the winding is required. In this paper a wide frequency band Multi Conductor Transmission Line model (MTL) is employed to simulate the propagation of PD signal in transformer windings. The MTL model is briefly reviewed and the related equations of the model are reformulated to easily simulate occurrence of a PD signal along the winding. Software is developed in Matlab to calculate the windings resonance frequencies and the magnitudes of over-voltages occurring between different disks along the winding. Then propagation of PD signal in a power transformer (900MVA, 525kV), is simulated using the (MTL) model with frequency dependent parameters. Also this method is employed to model the laboratory transformer winding.

Place, publisher, year, edition, pages
2012. Vol. 7, no 2, 3926-3934 p.
Keyword [en]
Partial Discharge, Transformers, Multi-Conductor Transmission Line Model
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-99095ISI: 000305258900028Scopus ID: 2-s2.0-84864327744OAI: oai:DiVA.org:kth-99095DiVA: diva2:541465
Note

QC 20120718

Available from: 2012-07-18 Created: 2012-07-13 Last updated: 2017-12-07Bibliographically approved

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Niasar, M. Ghaffarian

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