In St. Petersburg, paved cable 330 kV transmission line along the bottom of the Gulf of Finland

Branch of OAO "UES FGC" — Trunk Power Grids (MEA) of the North-West — has completed construction of the cable line (CL) of 330 kV North — Vasilyeostrovskaya — Ilyich Plant, which is part of the energy ring 330 kV in St. Petersburg. In the context of the construction features a unique project of its kind in laying 330 kV submarine cable along the bottom of the Gulf of Finland.

"This facility will go down in the history of electrification of St. Petersburg as advanced for its time" — General Director of MES North-West Valery Agueyev.

The total length of the cable line 330 kV North — Vasilyeostrovskaya — Ilyich Plant is 22.4 km.

The underwater portion of the cable line Vasilyeostrovskaya — North 4.2 km in length extending from the shore to shore Vasilevsky Island village Lahti. The work on laying of four separate strands arranged a special marine single cable to the bottom of the Gulf has been involved an international team of experts, chartered by a special technique. , Preparatory dredging to allow passage through shallow Danish ship-cable layer, which is also delivered to the place of work four "threads" of cable length of more than four kilometers each, and weighing more than 900 tons.

The new cable runs in Vasilyevsky the Petrograd and Primorsky district of St. Petersburg, as well as the Municipal District of Lahti-Ol'gino. Construction work on the laying of underground cables XLPE were performed open-pit and method of horizontal directional drilling. This technology has put the cable on complex sections of the route, avoiding the removal of pavement or cutting down trees.
Due to the fact that the line passes through the Gulf of Finland, the project has passed a number of necessary environmental approvals and received the endorsement of the Federal Service for Supervision of Natural Resources in the North-West Federal District, and was put to a public hearing.
Cable lines are more reliable and easy to operate than air, have high bandwidth and not clutter up the urban areas. In addition, CL is fully protected from external weather: wind and ice loads, lightning surges.

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