Substation
A substation , also known as substation or transformer station , is a substation that supplies traction current , i.e. the overhead line voltage of the railway , urban and tramways or the conductor rails of underground and suburban trains, from the public power grid or the high-voltage traction power system provides. Even trolleybuses need substations.
In Switzerland , all types of substations, including the three-phase substations used in the public power grid without changing the type of current, are referred to as substations.
Traction current
A substation differs from other substations in that it works with traction current or even changes the type of current to traction current. Serve rectifier for generating DC voltage, for example for the tram or Umformerwerke , with converters or inverters by the European power grid (50 Hz), a different frequency of the mainline network for. E.g. 16.7 Hz (e.g. Germany, Austria, Switzerland) or 25 Hz (e.g. Mariazellerbahn ) or direct voltage (e.g. narrow-gauge railways Switzerland).
In Germany, DB Energie substations usually have an outdoor 110 kV switchgear . For the substation at Waiblingen station , in order to save space, a design was chosen for the first time in Germany at the end of the 1970s in which the switchgear was housed in a building and the switches were installed with sulfur hexafluoride (SF 6 ) as an insulator, i.e. H. as a compact gas-insulated switchgear . This means that the substation takes up less space.
See also
Web links
- Location of substations on the Open Infrastructure Map (incomplete)
Individual evidence
- ↑ Jürgen Wedler, Manfred Thömmes, Olaf Schott: The balance sheet . 25 years of planning and building the Stuttgart S-Bahn. Ed .: Federal Railway Directorate Stuttgart. Stuttgart 1993, ISBN 3-925565-03-5 , pp. 285 .