2×35kV Power Transmission Line 110/35/10 kV “Niš 15”-Doljevac – 35/10 kV “Klisura” Substation, 35/10 kV “Žitorađa” Substation

2×35 kV double-circuit power line construction from a 35 kV power line 35/10kV “Klisura” Substation – 35/10 kV “Žitorađa” Substation to a 110/35/10 kV “Niš 15” (Doljevac) Substation was carried out from March 2019 to February 2020 at Doljevac, under investor Distribution system operator “EPS Distribucija d.o.o”, Belgrade. Construction of this line aims to improve the electric energy situation in the area of Doljevac municipality and surrounding locations.

Construction of this power transmission line secures a stable power supply for the 35/10 kV “Klisura” Substation, where the problems of maintaining a power supply level, power supply reliability, as well as a possibility of future capacity expansion for this substation, are being solved.

Line is composed of a cable section from the “Niš 15” (Doljevac) Substation, to the tower number 1, which is 482.55 meters in length, and an overhead section which is 2296.90 meters in length, from the tower number 1 to the tower number 15.

On the occasion of a new 2×35 kV line route description, a direction from “Niš 15” (Doljevac) Substation towards the existing 35kV power transmission line “Klisura” Substation – “Žitorađa” Substation, has been adopted as a reference route direction.

Cable lines are leaving the “Niš 15” (Doljevac) Substation from its southern side, and upon exiting the enclosed area are being directed towards the west in order to by-pass the Substation. Then, the route turns right and follows a plateau embankment of the same power transformer station, by-passes it and continues to the north towards the access road for the “Niš 15” (Doljevac) Substation. Parallel with the projected 35 kV cable lines, one HDPE pipe 50mm in diameter is laid, and an optical cable is pulled through it.

Route of the overhead section has a general south-north direction. From the new tower number 1 to the new tower number 15, an overhead line is installed as a two-way system on a steel lattice tower. Tower number 15 is placed on the route of existing 35kV power transmission line from “Klisura” Substation to “Žitorađa” Substation.

Besides direct expected effects in terms of the energy system functioning within Doljevac’s electric energy network, there are numerous indirect effects. All this is in function of sustainable economic development of the entire area, not only in terms of supply for the existing consumers, but also as a potential for the future investments development. Economic effects of a power transmission line construction are achieved as well through the relatively high participation of domestic workforce and industry, practically without importing the equipment from abroad.