Linxon energises complex substation project for Svenska kraftnät by replacing existing equipment with two new 400 kV air insulated switchgear (AIS) substations.

Construction having started in spring 2020, and a first substation commissioned in 2022, Linxon is energising a second substation at the Ringhals nuclear plant. The two 400 kV AIS substations – with a total of 11 bays – were supplied with disconnector circuit breakers (DCBs), auxiliary power supply and a protection and control system according to the IEC 61850 standard.

Sixty kilometres south of Gothenburg, Ringhals has been in commercial operation since 1976. With two pressurised water reactors, it is the second largest power plant in Sweden. The modernisation undertaken by Linxon required advanced planning and high safety standards. The refurbishment was achieved whilst maintaining power generation and keeping power outages to a minimum.

“This is another successful collaboration between Svenska kraftnät and Linxon,” said Andreas Burstedt, Linxon’s Managing Director for the Nordics. “With offices in Västerås, Sweden, Linxon is a regular and reliable partner to Svenska kraftnät, working on diverse energy grid projects across the country”.

According to the World Nuclear Association, Sweden’s nuclear power reactors currently provide about 40% of its electricity. In pursuit of national fossil-free energy targets, in November 2023, the government announced plans to construct two large-scale reactors by 2035 and the equivalent of 10 new reactors, including small modular reactors, by 2045.[1]