TY JOUR TI Computer Simulation of Feeder Protection Systems in Overhead Contact Network for Urban Electric Transport KW Urban electric transport KW protection of overhead contact network KW short circuit KW energy recuperation KW monitoring JO Bulletin of scientific research results AU Agunov, A.V. AU Scherban', A.V. AU Arhipov, D.D. PY 2025 IS 2025 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"