TY JOUR TI The limit of power flow in the traction power supply system KW capacity of traction power supply devices KW reinforcement of traction power supply system KW electric locomotive power KW electric locomotive voltage KW electric locomotive power factor JO Bulletin of scientific research results AU Ivanov, M.A. AU Seronosov, V.V. PY 2024 IS 2024 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"