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This article is devoted to assessing the transit of electricity from an external electrical power supply system through the traction network of a railway district that includes nine traction substations. Substation transformers has star-delta-11 connection. The paper presents a simulation model of the railway district implemented in the MATLAB/Simulink software package. Various options of loading the external power supply system are modeled including into account the symmetrical load of the external network and the single-phase load of traction substations. The values of the voltage difference on the traction windings of power transformers of adjacent substations that occurs at different loads, the balancing currents that this difference creates and real power losses in the inter-substation areas are calculated.

Воронежский государственный медицинский университет имени Н.Н. Бурденко Минздрава РФ, Кафедра онкологии лучевой терапии и лучевой диагностики (Воронеж, Россия) 2 Воронежский областной онкологический диспансер (Воронеж, Россия) 3 Центральная клиническая больница с поликлиникой Управления делами Президента Российской Федерации (Москва, Россия)

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