Open AccessModelling short-circuit current of a 21 MVA HTS superconducting transformer
Author(s) -
P. Surdacki,
L. Jaroszyński,
Łukasz Woźniak
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1782/1/012036
Subject(s) - transformer , resistive touchscreen , superconductivity , electromagnetic coil , materials science , electrical engineering , waveform , condensed matter physics , voltage , engineering , physics
The paper presents a computer model of an HTS 21 MVA 70/10.5 kV two-winding superconducting transformer. The model takes into account the influence of temperature and current intensity on electrical and thermal properties of windings made of two types of second generation superconducting tape differing in the presence of copper stabilizer. Rhyner’s power law was used to describe the transition to the resistive state of the YBCO superconductor layer. A model of the non-linear magnetic core of the transformer was developed by using modified Jiles-Atherton equations. The proposed model allows numerical determination of current, resistance and winding temperature waveforms during an operating short circuit of a 21 MVA superconducting transformer.