On September 18, TSCNET shareholder TransnetBW, one of the four German transmission system operators (TSOs), started the conversion of its substation in Schwörstadt with a symbolic cut of the spade. The construction site is located in the furthest southwest of the German federal state of Baden-Württemberg near the Swiss border. The upgrade provides the technical basis for connecting the substation to the 380kV extra-high voltage grid.
Dr. Werner Götz, Chairman of the TransnetBW Executive Board, referred at the groundbreaking ceremony to the steadily increasing share of renewables in the electricity mix, which confronts TSOs with maintaining voltage at a stable level despite the changing wind and weather conditions. “We are preparing the substation for the requirements of the energy transition and thus are also strengthening supply security in the Upper Rhine region.”
The reconstruction of the substation’s switchgear will be carried out in two stages, starting with the dismantling of the operations building and the switch panels of the existing 220kV switchgear. By 2021, the new 380kV switchgear will have been installed. The new device will initially be operated at 220kV before being connected to the 380kV grid in 2023. This implies that at the same time and section by section, the corresponding power lines will also be upgraded to 380kV.
TransnetBW starts conversion of the Schwörstadt substation (picture: TransnetBW; from left to right: Olaf Jungnitsch of GE Grid; Uli Glich, Project Manager Substations at TransnetBW; Christine Trautwein-Domschat, Mayor of Schwörstadt; Dr. Werner Götz, Chairman of the TransnetBW Executive Board; Thorsten Schwarz, Managing Director GE Grid; Bernd Jauch, Head of Technology, Projects and Portfolio Management at TransnetBW)
> See TransnetBW press release, in German (html)