Overhead Line 400 kV Lastva - Čevo

Overhead Line 400 kV Lastva - Čevo

The project 400 kV OHL Lastva-Čevo includes the construction of two overhead lines 2x400 kV and 400 kV in the length of about 35 km, which would connect SS Lastva to the electric power system of Montenegro by integrating into the existing OHL 400 kV Podgorica-Trebinje and connecting with SS Pljevlja construction of section OHL 400 kV Lastva-Pljevlja from Lastva Grbaljska to Čevo.


slika1The project is implemented in compliance with the obligations set forth by the Project Coordination Agreement on the interconnection between the electric power systems of Italy and Montenegro, so that the 110 kV transmission network is not a “bottleneck” in the implementation of development plans of both the coastal area and the northern area of Montenegro.

Currently is working on the construction for the foundation and raising the overhead lines. The main project was revised and supplied of the equipment is about 70%. The main contractor is Iberdrola Španija.

The project Lastva-Pljevlja is implemented in compliance with the obligations set forth by the Project Coordination Agreement on the interconnection between the electric power systems of Italy and Montenegro, so that the 110 kV transmission network is not a “bottleneck” in the implementation of development plans of both the coastal area and the northern area of Montenegro.

The project objective is to construct the electric power infrastructure on the territory of Montenegro, which would create conditions for connecting the electric power systems of Italy and Montenegro, alleviate difficulties in electricity delivery at the transmission level in the coastal area of Montenegro and ensure connection of SS Žabljak and SS Brezna at 110 kV voltage level, thereby improving security of power supply to the consumers of the northern area of Montenegro. This would make the electric power system of Montenegro more stable and reliable reducing the impact of neighboring electric power systems in case of huge disorders.

The project implementation includes the following subprojects:

  • SS 400/110/35 kV Lastva (2x300 MVA);
  • OHL 400 i 2x 400 kV OHL Lastva-Čevo;
  • OHL 400/ 400+110 kV OHL Čevo-Pljevlja.

A subproject 400 kV OHL Lastva-Čevo includes the construction of two overhead lines 2x400 kV and 400 kV in the length of about 35 km, which would connect SS Lastva to the electric power system of Montenegro by integrating into the existing OHL 400 kV Podgorica-Trebinje and connecting with SS Pljevlja construction of section OHL 400 kV Lastva-Pljevlja from Lastva Grbaljska to Čevo. The subproject is in the final development phase of the main design, and the Contractor is Iberdrola Spain.

The major project benefits are:

  • fulfilling n-1 security criterion in case of 500-1000 MW transits via submarine cable;
  • reliable power supply of the consumers in the coastal area of Montenegro;
  • improving voltage and reactive conditions;
  • connecting the interconnection between Montenegro and Italy by submarine cable;
  • load-shedding of transmission capacity in the coastal area;
  • improving voltage and reactive conditions in the 400 kV network of Montenegro;
  • reducing losses in transmission network (by higher utilization of 400 kV network);
  • providing double-sided power supply of SS Brezna and SS Žabljak.

 

The estimated value of the entire project is about 105 million € and the project completion is planned in 2016.