<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></abstract>

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.

Direct currents in power transformers

Department of Applied Electronics and Telecommunications/RICE

Department of Theory of Electrical Engineering

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Direct currents in power transformers"}

The article is devoted to the physical nature of geomagnetism, magnetic storms and methods of predicting their origin and deals with geomagnetic induced...

Direct currents in power transformers

Online veröffentlicht: 02. März 2019

Seitenbereich: 69 - 73

Eingereicht: 01. Nov. 2018

DOI: https://doi.org/10.2478/jee-2019-0010

Schlüsselwörter
geomagnetic field, coronal mass ejection, geomagnetically induced current, non-linear transformer, magnetic semi-saturation

© 2019 Milan Stork et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Direct currents in power transformers

Online veröffentlicht: 02. März 2019

Seitenbereich: 69 - 73

Eingereicht: 01. Nov. 2018

DOI: https://doi.org/10.2478/jee-2019-0010

Schlüsselwörtergeomagnetic field, coronal mass ejection, geomagnetically induced current, non-linear transformer, magnetic semi-saturation

© 2019 Milan Stork et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
geomagnetic field, coronal mass ejection, geomagnetically induced current, non-linear transformer, magnetic semi-saturation