Reconstruction of electrical substations 110/10 KW «Porshen»

Dismantling work :

• dismantling the foundations of power transformers;
• dismantling the existing oil receivers, oil pans, oil pipelines accidental discharge of transformer oil;
• dismantling of reinforced concrete portals and busbars arrangement оf 110 kV;
• dismantling of reinforced concrete cable trays;
• dismantling of reinforced concrete racks of high-voltage equipment;
• dismantling of old railway cross-country tracks.

Mounting and installation:

• a new oil pipe for emergency oil drain, as well as foundations for SF6 gas circuit-breakers of 110 kV;
• new portals for outdoor switchgear of 110 kV;
• new foundations with oil receivers for power transformers;
• new foundations with oil receivers for power transformers;
• a new tray system of precast concrete.

Electrical work on the open switchgear of 110 kV:

• installation of 2 power transformer of type TRDN 25000/110 kV ZTR;
• installation of 2 gas-insulated 110 kV circuit breakers Siemens;
• installation of 6 current transformers of 110 kV Arteche production on the prepared metal;
• installation of 6 disconnectors of 110 kV manufactured by HVT;
• installation of 8 surge suppressors of 110 kV manufactured by ABB;
• busbar of outdoor switchgear equipment of 110 kV with AC 185/19 wire with a total length of 560 meters.

Electrical work on indoor switchgear of 10 kV:

• replacement of 6 oil circuit breakers of 10 kV into VR-35 vacuum circuit breakers manufactured by RZVA with adaptation for withdrawable elements;
• installation of current transformers of CT of 10 kV, voltage transformers of VT of 10 kV in the amount of 24 pcs. And the reconstruction of a rigid busbar of 10 kV;
• completion of cable and wire products with a total length of about 22 km through an electrical conduit and substation equipment with subsequent wiring and connection;
• reconstruction of the heating system of indoor switchgear of 10 kV, installation of lighting for indoor switchgear of 10 kV, and outdoor switchgear of 110 kV.