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Information × Registration Number 0226U000148, (0125U002874) , R & D reports Title Magnetic field in premises adjacent to built-in transformer substations and development of means of its reduction popup.stage_title Дослідження просторового розподілу магнітного поля в приміщеннях, розташованих на одному поверсі і суміжних з вбудованими трансформаторними підстанціями 6(10)/0,4 кВ, при різних струмах навантаження трансформаторної підстанції і її фідерів. Head Kundius Kateryna D., Доктор філософії Registration Date 05-01-2026 Organization Anatolii Pidhornyi Institute of Power Machines and Systems of the National Academy of Sciences of Ukraine popup.description1 Investigation of the spatial distribution of the magnetic field in residential and public premises located on the same floor and adjacent to the built-in transformer substations of 6(10)/0.4 kV, and development of means to reduce it to a level safe for people. popup.description2 The purpose of the first stage. Mathematical modeling and calculation of the distribution of magnetic field (MF) in rooms adjacent to the built-in 6(10)/0.4 kV substations (TS), at different load currents of the TS and its feeders. It is shown that the spread of load currents of different output feeders of built-in TS reaches ± 30%, which can affect the level of MF in adjacent rooms located on the same floor as the built-in TS. An analytical model for calculating the MF of TS with a capacity of 100 kVA and 630 kVA is proposed, which is built on the basis of the Biot-Savart law as a superposition of spatial components of MF from straight sections of the low-voltage power line at different load currents of the TS in its feeders. It is shown and experimentally confirmed for the first time that a significant spread of load currents of TS feeders (up to ± 30%) causes a slight impact (less than 12%) on the level of MF in rooms adjacent to the TS. It was found that the main influence on the level of MF in the rooms adjacent to the TS is not exerted by the vertical current conductors of the TS feeders, but by the horizontal current conductor of the substation with the total load current, which must be taken into account when synthesizing means of reducing MF in TS rooms. Product Description popup.authors Kateryna D. Kundius popup.nrat_date 2026-01-05 Close