As part of their winterization operations, specialists of Saratov DG, a branch of IDGC of Volga, PJSC (a member of Rosseti Group of Companies), conducted over 150 de-icing trials for 6-10-35-110 kV OHL wires and ground wires of 110 kV OHL operated by production departments (PDs) of Saratov branch. Trial de-icing of conductors and ground wires of 110 kV OHLs of Saratov DG, a branch of IDGC of Volga, PJSC, is conducted in compliance with Trial De-Icing Schedule approved by Saratov RDU (distribution zone), a branch of SO UES, JSC. Saratov DG, a branch of IDGC of Volga, PJSC, utilizes 256 de-icing schemes for removal of ice accumulation from conductors and ground wires of 110-220 kV overhead power lines. Typically, ice accretion on overhead power lines occur during the period from November 1 till April 1 with the most severe icing conditions being reported in December and March. Trial de-icing operations involve operational and maintenance staff of Saratov DG, a branch of IDGC of Volga, PJSC and other power sector entities (Nizhne-Volzhskiy Main Electric Network Enterprise of MES of Volga, PJSC (Main Power Transmission Lines of Volga), Saratov branch of T Plus, PJSC, branches of the Russian Railways, JSC (RZD, JSC), etc.). Due to specific wind speed and direction and terrain configuration, regions within the area of responsibility of Pravoberezhnoye, Tsentralnoye, Zavolzhskoye and Privolzhskoye PDs are characterized by higher severity and frequency rates of ice accretion on conductors and ground wires of OHLs. Ice accretion on wires occurs under high humidity conditions at transient air temperatures, dropping below zero and raising above zero. Ice and rime ice buildup on transmission lines may cause breakage of conductors and ground wires. At the moment, ice-melting is the most efficient de-icing technique used to protect overhead power transmission lines. According to a pre-defined schemes, short-circuit currents are applied locally, causing ice melting on an affected sections of an overhead transmission line. The result is a removal of ice accretion from wires.