TY JOUR TI METHOD OF PRELIMINARY CALCULATIONS FOR CREATION OF TEMPORARY RING MODES IN ELECTRICAL NETWORKS 6-10 kV KW ring mode KW parallel operation of transformers KW reliability KW power flow JO Construction and industrial safety AU Arifov, A.M. AU Bekirov, E.A. PY 2025 IS 0 PB V.I. Vernadsky Crimean Federal University