| DOI: https://doi.org/10.15407/publishing2020.55.067
HEAT RESISTANCE OF THE TRANSFORMER TO ACTION OF GEOMAGNETIC CURRENTS
V.F. Ivankov1, A.V. Basova2, I.V. Khimjk3
1,2-PrJSC "ZTR",
Dniprovsre shose, 3, Zaporizhya, 69600, Ukraine
3-Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy, 56, Kyiv-57, 03680, Ukraine,
e-mail:
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
The frequency spectrum of magnetization current, which is excited in addition to the nominal current in the winding of the higher voltage, were defined. Calculations of the magnetic field, losses, as well as heating of windings, structural elements and tank confirmed the thermal resistance of the five-core transformer with a capacity of 630 MBA to the action of geomagnetic inducted currents. References 6, figures 3.
Key words: transformers; geomagnetic induced currents; losses; temperature rises; calculations.
1. IEC 60076-7. 2018. Power transformers-Part 7: Loading guide for mineral-oil-immersed power transformers, 89.
2. IEEE Std C57.163-2015. IEEE Guide for Establishing Power Transformer Capability while under Geomagnetic Disturbances. 38.
3. Effects of Geomagnetic Disturbances on the Bulk Power System. 2012. GMDTF Interim report: Norton American Electric Reliability Corporation, 137.
4. Bolduc L., Aubin J. 1977/1978. Effect of direct currents in power transformers. Part I. A general theoretical ap-proach. Part II. Simplified calculations for large transformers. Electric Power Systems Research. No 1. Pp. 291-304. DOI: https://doi.org/10.1016/0378-7796(78)90016-0
5. Ivankov V.F., Basova A.V., Khimiuk I.V. Metody modeling of transformers and reactors. Kyiv: Nash format, 2017. 490 p. (Ukr)
6. Ivankov V.F., Basova A.V. Calculation of geomagnetic induced currents effecting on the high-power transformer. Electrical Engineering And Power Engineering. 2019. No 4. Pp. 8-21.
Received 05.01.2020
PDF
|
