110 kV Lauchhammer – Riesa line
The 110 kV line Lauchhammer – Riesa , which went into operation on January 24, 1912, was the first high-voltage line in Europe with an operating voltage of over 100 kV. It was designed as a two-circuit three - phase line and thus corresponded to the electrotechnical specification of today's high-voltage lines of the state network with 110 kV. It and the switchgear were built and operated by the Lauchhammer stock corporation . A 65- or 60-kV ring line led from the Gröditz and Riesa switchgear to the Gröba electricity association on the Gröba manor near Riesa in Saxony.
history
The initiative to build the overhead line came from Joseph Hallbauer, then General Director of Eisen- und Stahlwerke AG Lauchhammer . He considered reducing the costs of transporting lignite and lignite briquettes from Lauchhammer to the steelworks in Riesa and Gröditz by building a high-voltage overhead line . Since all existing lines were previously only designed for 50 kV, 65 kV seemed feasible to him. In the steel works, however, the output of 20 MW was required, which could not be achieved with 65 kV. Together with the Dresden developer and engineer Emil Gottfried Fischinger , technical advisor to Hallbauer and Wilhelm Kübler and EV Gröba, an agreement was then reached for a line with 110 kV.
The 110 KV line was designed as a two-circuit three - phase alternating current overhead line. The power station for this was built on Oberhammer in Lauchhammer next to the already existing briquette factory. All components such as transformers, insulators, overhead lines, overhead line masts (support, angle and twisting masts) had to be calculated, designed and produced accordingly. Overpasses and crossings with railway lines and telephone lines had to receive protective structures. The Elbe was crossed with a span of 272 m in length. The masts at the ends of this span were 43 and 37 m high. For fear of the high voltage, the authorities responsible for the construction made the requirement that protective bridges had to be built for rail and road crossings, steel structures between the line and the road.
Also in 1912 a single circuit 110 kV line was put into operation between Gröditz and Niederwartha . A kind of delta mast was used for this.
In 1929, the new Plessa peak load power plant fed into the existing 60 kV network of the Gröba Electricity Association on the route at Plessa .
As early as 1939/40, the Aktiengesellschaft Sächsische Werke (ASW) and Mitteldeutsche Stahlwerke AG (AG Lauchhammer) jointly built a new 110 kV double line from the Gröditz substation (now operated by enso ) to the Wacker-Chemie station, later the substation, parallel to the existing line West Mückenberg. In November 1944, a 110 KV single line from the Lauchhammer power plant to the Wilhelminensglück power plant in Klettwitz was put into operation. This 50 km long 110 kV line from Lauchhammer to Gröditz still partially exists.
Dismantling
In 1945 the overhead line was partially taken out of service. Only two sections have been preserved: a section between Gröditz and Riesa was operated with a 110 kV circuit until September 1964 and then dismantled. The masts of the Elbe crossing remained standing and were not dismantled until spring 1976. The second section between the former Lauchhammer power plant and the waterworks in Lauchhammer-Süd was operated at 60 kV until after the fall of the Berlin Wall . In 1975 the last mast was renewed in Lauchhammer. The lowest traverse, which was equipped with cable clamps, was removed.
The last section of the line with the original masts did not disappear until 1995. One of the masts has stood in front of the Brandenburg Technical University of Cottbus since 1996 . Another mast is - next to a mast of the first 110 kV overhead line of the RWE - as an exhibit on the outdoor area of the Osterath electrical store . At the site of the former Lauchhammer power plant, an original mast was erected next to a 110 kV switchgear (at 51 ° 29 ′ 51.8 ″ N , 13 ° 48 ′ 24.7 ″ E ). A model of the masts used for this line can also be viewed in the Deutsches Museum in Munich.
Today, in addition to the renewed 110 kV line, there is also a 380 kV extra-high voltage line along the route.
literature
- Hans-Jürgen Schmidt: Mining and industrial history - the first 110 kV system in Europe . Ed .: Traditionsverein Braunkohle Lauchhammer eV Lauchhammer 2011.
- Friedrich Kießling, Peter Nefzger, Ulf Kaintzyk: Overhead lines - planning, calculation, execution . Springer, Berlin 2001, ISBN 978-3-540-42255-6 .
- Photo of the Elbe crossing, before 1945
Footnotes and individual references
- ^ Frank Andert (Red.): Radebeul City Lexicon . Historical manual for the Loessnitz . Published by the Radebeul City Archives. 2nd, slightly changed edition. City archive, Radebeul 2006, ISBN 3-938460-05-9 .
- ↑ a b c Dietmar Siegmund: The 110,000-V pipeline Lauchhammer - Gröditz - Riesa - from the first thought through to decommissioning. (PDF; 8.6 MB) In: et.tu-dresden.de. 2012, accessed October 18, 2017 .
- ↑ 110kV line Lauchhammer - Riesa - Geschichtsspuren.de
- ↑ Jana Widuwilt: The age of electrics began in Lauchhammer. In: Lausitzer Rundschau, January 25, 2012
