TS 35/10 kV “Velika Župa”

In Velika Župa near Prijepolje, construction of a new 35/10 kV, 2 x 8 MVA substation began in early May 2023, the construction of which will ensure a safer power supply for consumers, and create conditions for connecting new users to the electricity grid.

Montprojekt d.o.o. Belgrade, as part of the contract for the construction of the 35/10 kV substation “Velika Župa”, prepared complete project and technical documentation, obtained a building permit and approvals from all competent institutions in accordance with legal regulations, carried out complete architectural/construction works, and delivered and installed electrical power equipment.

The new transformer station has a voltage level of 35/10 kV, with an installed capacity of 2 x 8 MVA.

The 35 kV switchgear is a type-tested, air-insulated, metal-clad, metal-enclosed medium-voltage switchgear for indoor installation, with one system of sectionalized busbars, and consists of 8 free-standing metal-enclosed cells with vacuum interrupters, namely 2 transmission, 2 transformer, 1 connection, 1 additional connection and 2 reserve transmission cells.

The 10 kV switchgear is a type-tested air-insulated switchgear, for indoor installation, with one system of sectioned busbars, and consists of 17 free-standing cells, namely 10 feeder cells, 2 transformer cells, 2 metering cells, 1 cell with a house transformer, 1 connection cell and 1 additional connection cell. All cells are equipped with connection, switching, busbars and low-voltage compartments, equipped with vacuum circuit breakers with withdrawable parts, earthing switches, current and voltage transformers, capacitive voltage indicators, as well as microprocessor-based protection and control relays and test sockets in the LV compartments of the cells.

Two power transformers with a capacity of 8 MVA, voltage level 35±2×2.5%/10.5 kV, Dyn5 coupling, with natural air cooling, were installed and connected.