TY JOUR TI SIMULATION OF SHORT-CIRCUITS MODES OF A TRANSFORMER SUBSTATION KW mathematical modeling KW transformer substation KW short circuit JO Modern Technologies and Scientific and Technological Progress AU Konovalov, Y.V. AU Pidplet, D.N. AU Golovatiukov, L.K. AU Zaitsev, S.A. PY 2025 IS 2025 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»