• Valerii Valentynovych Kyryk Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського», Ukraine
  • Vadym Ihorovych Mossakovskyi Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського», Ukraine



activity of the sun, solar wind, geomagnetic storm, geomagnetic induced current, earth surface potential, saturation, harmonic spectrum, local overheating


It is analyzed of a magnetic field disturbance of Earth and its influence on a power supply system. The formation mechanism of geomagnetic induced currents which can render subzero influence on communication is considered, including on extended high-voltage electric networks. This influence is taken to the negative effects such as the half-cycle saturation of power transformer and half-cycle saturation of current transformer because in compare to the alternating currents frequency the GIC can be considered direct currents.


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