Keywords
geomagnetic induced currents
losses
temperature rises
calculations
How to Cite
Abstract
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.
References
IEC 60076-7. 2018. Power transformers-Part 7: Loading guide for mineral-oil-immersed power trans-formers, 89.
IEEE Std C57.163-2015. IEEE Guide for Establishing Power Transformer Capability while under Geo-magnetic Disturbances. 38.
Effects of Geomagnetic Disturbances on the Bulk Power System. 2012. GMDTF Interim report: Norton American Electric Reliability Corporation, 137.
Bolduc L., Aubin J. 1977/1978. Effect of direct currents in power transformers. Part I. A general theoretical approach. Part II. Simplified calculations for large transformers. Electric Power Systems Research. No 1. Pp. 291-304.
Іvankov V.F., Basova A.V., Khimiuk І.V. Metody modeling of transformers and reactors. Kyiv: Nash format, 2017. 490 p. (Ukr)
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.
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Copyright (c) 2020 V.F. Ivankov, А.V. Basova, І.V. Khimjk