Collaboration to strengthen Sweden’s energy system
Svenska kraftnät is running around fifty projects in Stockholm to expand and strengthen the transmission grid, several of them together with regional and local grid owners. Another important piece of that puzzle is now being added with the installation of the first of two transformers at the Skanstull site. About 1.5 million inhabitants will benefit from the expansion and refurbishment of Stockholm’s electricity grid.
The project is characterized by good cooperation between the owner, Svenska kraftnät, the supplier, Linxon and the product supplier, Hitachi Energy. Skanska and Kraftdragarna are also engaged as professional subcontractors for construction and transport.
The new station – Skanstull – is being built to the south of Södermalm in central Stockholm. The building is architect-designed and almost ready. House installations have been underway, and recently a gas-insulated switchgear (GIS) with control systems was put in place and the installation of the power transformer that forms the heart of the station started.
“The first transformer and reactor were transported by rail from Ludvika to the port of Norrköping. There, transshipment to a barge took place to continue the journey towards Stockholm”, explained Ingela Hålling, CEO of Linxon Sweden.
In December, another barge carrying the second transformer and reactor arrived at Skanstull. When the station is completed in the summer of 2023, cables from Snösätra wlll be connected first, then Ellevio’s 220 kV station. The station is also prepared for the connection of 400 kV cables from Anneberg-Skanstull.
”The transmission grid in Stockholm is in great need of reinforcement and is highly prioritized. The station in Skanstull is one of several important hubs for increasing capacity,” said Per Eckemark, Head of Grid Division, Svenska kraftnät.
”We are very pleased to deliver the equipment to Skanstull and to be able to contribute to the development of a flexible, safe and sustainable electrical system in Stockholm. Our supply of transformers, GIS switchgear, reactors and the MicroSCADA pro control system comprise world-leading technology from our factories in Ludvika and Switzerland,” said Tobias Hansson, CEO of Hitachi Energy in Sweden.