Title: | Direct currents in power transformers |
Authors: | Štork, Milan Mayer, Daniel |
Citation: | ŠTORK, M., MAYER, D. Direct currents in power transformers. Journal of Electrical Engineering = Elektrotechnický časopis, 2019, roč. 70, č. 1, s. 69-73. ISSN 1335-3632. |
Issue Date: | 2019 |
Publisher: | De Gruyter |
Document type: | článek article |
URI: | 2-s2.0-85062832281 http://hdl.handle.net/11025/33950 |
ISSN: | 1335-3632 |
Keywords in different language: | geomagnetic field;coronal mass ejection;geomagnetically induced current;non-linear transformer;magnetic semi-saturation |
Abstract in different language: | The article is devoted to the physical nature of geomagnetism, magnetic storms and methods of predicting their origin and deals with geomagnetic induced currents called GIC (Geomagnetically Induced Currents) and their effect on power transformers. A simplified, single-phase transmission system is described mathematically and its analysis was performed. Also the phenomenon of periodic semi-saturation of the magnetic circuit of the transformers resulting in current overload of the transformer windings, which can lead to thermal damage of the windings is explained. In addition, there is a significant deformation of the currents in the electrical system. The numerical solution of the system was verified by measurement on an electrical model. |
Rights: | Plný text je přístupný v rámci univerzity přihlášeným uživatelům. © De Gruyter |
Appears in Collections: | Články / Articles (KTE) Články / Articles (KAE) Články / Articles (RICE) OBD |
Files in This Item:
File | Size | Format | |
---|---|---|---|
Štork_ Direct currents in power transformers.pdf | 214,75 kB | Adobe PDF | View/Open Request a copy |
Please use this identifier to cite or link to this item:
http://hdl.handle.net/11025/33950
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.