TY JOUR TI Dependence of rail potential on the resistance of the traction substation grounding device and rail line parameters KW traction rail network KW rail line KW potential on rails KW grounding device KW traction current JO Bulletin of scientific research results AU Basharkin, M.V. PY 2024 IS 2024 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"