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Information × Registration Number 0222U000236, 0121U111836 , R & D reports Title Investigation of nonlinear magnetic connections between elements of power cables of high-voltage power lines covered by ferromagnetic cores popup.stage_title Head Hrinchenko Volodymyr S., Кандидат технічних наук Registration Date 05-01-2022 Organization State Institution "Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine" popup.description2  Based on the laws of theoretical electrical engineering and classical electrodynamics, a mathematical model of electromagnetic processes that occur in high voltage cable lines covered by ferromagnetic cores that are part of the shielding system of its magnetic field when grounding their own cable screens at both ends. To take into account the nonlinear magnetic connections between the cores and the shields of the cables, a function is considered that describes the dependence of the magnetic permeability of the core on the strength of the external magnetic field. To determine the form of this function, the corresponding experimental studies were performed, for which a measuring stand was developed, on which the core magnetization curve was measured, and an analysis of the magnitude of the measurement uncertainty was performed. Since the known methods of approximation of the main magnetization curve do not allow to adequately describe the measurement results, a new approach to the approximation of the magnetization curve by analytical function was developed and the corresponding analytical dependence was obtained and used in the second stage. Product Description popup.authors Hrinchenko Volodymyr S. Tkachenko Oleksandr O. Chunikhin Kostyantyn V. Yakovenko Volodymyr M popup.nrat_date 2022-03-09 Close