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Publikováno v:
2019 Southern African Universities Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association of South Africa (SAUPEC/RobMech/PRASA).
Geomagnetically induced currents (GIC) are dc-like currents that cause transformers to become a source of harmonics in a power system. This paper investigates the harmonic profiles and thresholds of dc currents that affect the operation of transforme