TY JOUR TI DIGITAL TRANSFORMATION OF ELECTRICAL EQUIPMENT AND AUTOMATIONFACILITIES: A CASE STUDY OF A DISTRICT SUBSTATION KW digital transformation KW electrical equipment KW automation KW district substation KW control KW predictive diagnostics KW optimization JO Scientific Papers Collection of the Angarsk State Technical University AU Konovalov, Y.V. AU Brateiko, A.S. AU Zaitsev, S.A. AU Korpan, V.Y. PY 2026 IS 2026 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»