dc.contributor.author | Gustavsen, Bjørn Alfred | |
dc.contributor.author | Portillo, Alvaro | |
dc.date.accessioned | 2018-12-18T14:48:11Z | |
dc.date.available | 2018-12-18T14:48:11Z | |
dc.date.created | 2018-07-06T12:46:51Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0885-8977 | |
dc.identifier.uri | http://hdl.handle.net/11250/2578173 | |
dc.description.abstract | Transformer manufacturers make routine use of white-box detailed transformer models for ensuring that the transformer will pass the lightning impulse test. For use in general simulation studies, the model should additionally be multi-phase and properly reproduce the transformer's input impedance characteristics and voltage ratios at 50/60 Hz. One challenge in such general modeling scope is to properly represent the frequency-dependent damping of the transformer's many resonances. In this work we show how to properly include empirical damping factors in a multi-phase admittance-based formulation of the state-equations. It is shown that the substitution of the real part of the state matrix eigenvalues causes some loss of accuracy at lower frequencies, but this deficiency is mitigated by a correction to the output matrix. The resulting model can be directly included in EMTP-type simulation programs via a companion model, or via a terminal model with an add-on model for optional calculation of selected internal node voltages. Application of the modeling approach to a single-phase three-winding transformer demonstrates its merit in terms of accuracy and efficiency. Finally, the limitations of the model are discussed regarding accuracy and applications scope. IEEE | nb_NO |
dc.description.abstract | A Damping Factor-Based White-Box Transformer Model for Network Studies | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | IEEE | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | A Damping Factor-Based White-Box Transformer Model for Network Studies | nb_NO |
dc.title.alternative | A Damping Factor-Based White-Box Transformer Model for Network Studies | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.journal | IEEE Transactions on Power Delivery | nb_NO |
dc.identifier.doi | 10.1109/TPWRD.2018.2847725 | |
dc.identifier.cristin | 1596109 | |
dc.relation.project | Norges forskningsråd: 207160 | nb_NO |
cristin.unitcode | 7548,50,0,0 | |
cristin.unitname | Energisystemer | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |