В Санкт-Петербурге ввели в эксплуатацию энергетическое кольцо

As part of the construction of the St. Petersburg energy ring, GlobalElektroServis, OJSC has pulled off a unique engineering project, never before accomplished in Russia, to lay a 330 kW submarine cable along the bottom of the Gulf of Finland. The construction was ordered by NorthWest Main Power Grid, a branch of FGC UES, OJSC.

 

The 330 kW Northern - Vasileostrovsksaya - Ilyich Plant cable line is 20.5 km long, and a four-kilometer section runs along the bottom of the Gulf of Finland, from the coast of Vasilievsky Island to the village of Lahti.

 

The bottom was dredged in preparation for laying the cable, and over 400,000 cubic meters of earth were removed. The cable, weighing more than 900 tons, was laid at a depth of between five to ten meters, depending on the bottom topography. Five ships, including two from abroad, were directly involved in the underwater operations to lay the cable.

 

Cable terminations were installed to connect the cable line at the Northern and Ilyich Plant substations, and a cell was also installed at the Northern substation to connect a 100 MVAR shunt reactor.

The company is currently building a 330 kW Vasileostrovsksaya substation, which will serve as the final technological link in the St. Petersburg energy ring.

 

"Bringing the energy ring online will make the northern capital's energy system more reliable, while eliminating the chance of technological disruptions to the city's electrical supply. We're pleased that we were able to meet our deadlines to carry out this uniquely complex engineering project to lay the submarine cable. Next year we'll complete the construction of the Vasileostrovsksaya substation, which will make electrical supply more reliable for consumers in the city's historic district," noted Eldar Nagaplov, the general director of GlobalElektroServis, OJSC.