TY JOUR TI Development of a methodology for forming a subsystem for monitoring and controlling the metro power supply network KW metro power supply network KW intelligent monitoring systems IoT and Smart grid KW methodology for forming a monitoring and control subsystem KW semi-Markov model KW data processing KW introduction of new technologies JO Bulletin of scientific research results AU Davydova, A.V. AU Kanaev, A.K. PY 2024 IS 2024 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"