220 kV “Lviv-2” Substation

Design works (working documentation stage) with individual construction solutions for the protection of the autotransformer, including approval with an expert organization.
Construction and installation works:

dismantling of existing equipment and busbar systems;
construction of a protective structure for AT-2 made of monolithic reinforced concrete;
installation of an oil collection pit designed to receive the full volume of transformer oil;
installation of oil drainage channels to divert oil from the oil collection pit into the existing oil sump;
installation of new equipment supports at the 220 kV switchyard;
installation of cell-type portal structures, between which a mesh system (anti-drone net) is installed above the protective structure to prevent direct impact on the protective facility;
installation of working and emergency lighting systems for the physical protection structure;
grounding and lightning protection of the designed equipment;
installation of autotransformer type ATDTN 125000/220/110/6 U;
installation of a 3-phase 220 kV surge arrester set type PCA33E192L21E2M8-245-5 with operation counters type SC13 (TycoElectronics RaychemGmbH);
installation of a 3-phase 6 kV surge arrester set type MWK-8 (ABB);
reconstruction and adaptation of the 6 kV bus bridge;
installation of busbar systems for 6–220 kV equipment being installed;
installation of a 0.5 m wide cable tray branch;
organization of cable connections between different stages of the electrical power generation process.

Client: NPC “Ukrenergo”