Freudenau power plant

Freudenau power plant
	Freudenau power station, seen upstream.; V. l. Right: Lower course of the Danube Canal, Freudenau Harbor, Danube, Danube Island, New Danube, Lobau. On the left on the horizon the Vienna Woods.
	location
Coordinates	48 ° 10 ′ 36 " N , 16 ° 28 ′ 52" E Coordinates: 48 ° 10 ′ 36 " N , 16 ° 28 ′ 52" E
country	Austria
place	Vienna
Waters	Danube
Kilometers of water	km 1921.05
Height upstream	161.35 m above sea level A.
	power plant
owner	VERBUND Hydro Power AG
operator	VERBUND Hydro Power AG
construction time	1992-1998
Start of operation	1999
	technology
Bottleneck performance	172 megawatts
Average ; height of fall	8.6 m
Expansion flow	3,000 m³ / s
Standard work capacity	1,052 million kWh / year
Turbines	6 Kaplan bulb turbines
Generators	6 synchronous generators
	Others
Website	Freudenau power plant
was standing	April 2012

Southwest view of the power plant with the pedestrian bridge and the lock system in the foreground (2018)

View from the upper water onto the weir fields (left) and the machine house (right)

The Freudenau power plant is a run-of- river power plant on the Danube in the Austrian capital of Vienna and the tenth and last of the Austrian Danube power plants .

history

After a large majority of the Viennese population voted in favor of the power plant in one of the Viennese referendums on May 14 and 16, 1991, Österreichische Donaukraftwerke AG began construction in 1992 and completed it in 1998. Wien Energie has electricity purchase rights of 12.5 percent for the power plant.

On October 22, 1996 there was a serious shipwreck at the power plant, which was still under construction. During high tide, the Slovak pushboat “Ďumbier” did not reach the lock opening due to the strong current and was pushed through one of the weir fields . Eight sailors were killed, only one could be saved.

Plaque

On the pedestrian bridge of the Danube power station Freudenau there is a bilingual inscription board, which is supposed to remind of this accident. It bears the following text in German and Slovak.

IN THIS LOCATION, EIGHT MEMBERS OF THE SHIP'S CREW DIED IN THE ACCIDENT OF THE SLOVAK SHIP ĎUMBIER ON OCTOBER 22, 1996. NA TOMTO MIESTE ZAHYNULI DŇA OCTOBER 22, 1996 PRI HAVÁRII SLOVENSKEJ LODE ĎUMBIER ÔSMI ČLENOVIA POSÁDKY

    DUŠAN MIČEK         RÔBERT BOROŠ
    ZDENKO DUBSKÝ       IVAN BEDEČ
    MILAN LABÁT         MARTIN TEMNIAK
    ANTON PUČKOVICA     JOZEF NOVOVESKÝ

WE WILL ALWAYS KEEP YOU IN OUR HONORED THOUGHTS! ČESŤ I PAMIATKE. NIKDY NEZABUDNEME! EMPLOYEES OF THE SHIPPING COMPANY. ZAMESTNANCI PLAVEBNEJ SPOLOČNOSTI SLOVENSKÁ PLAVBA A PRÍSTAVY, AS, BRATISLAVA

technical description

The wet construction dam dams the Danube at river kilometer 1,921.05 over a length of around 28 km to a height of 8.6 m. The content of the storage space is approx. 55 million m³, the storage target is at a height of 161.35 m above sea level. A.

At the right end of the dam are the two locks , each with a usable length of 275 m and a usable width of 24 meters. The weir consists of four weir fields, each 24 meters wide, and is located on the left bank of the dam wall.

The Freudenau power plant can be used by pedestrians and cyclists as a bridge over the Danube. Together with the Waluliso Bridge, it represents a transition for pedestrians and cyclists across the Danube and the New Danube .

Machine house

In the machine house , which is located between the locks and the weir, six machine sets generate electrical energy for the public power grid . Each of these sets consists of a Kaplan bulb turbine with a directly coupled three-phase generator . Each of the water turbines has a diameter of 7.5 m, a horizontal shaft and is 142 m above sea level.

The nominal output of each turbine is 30.3 MW , the nominal speed 65.2 min ⁻¹ and the nominal flow rate per turbine 500 m³ / s. With a nominal voltage of 10.5 kV, the six three-phase generators have a maximum output of 32 MVA each . Overall, the power plant has a bottleneck capacity of 172 MW. The feed takes place via three 110 kV cables in the nearby Kaiserebersdorf substation of Wiener Netze GmbH .

With an expanded flow rate of 3000 m³ / s, the standard energy capacity is 1052 GWh per year . This corresponds to an actual average output, averaged over a year, of 120 MW and as of 2006 approx. 1.85% of the total electrical output generated in Austria.

ecology

As a result of the Viennese Danube regulation at the end of the 19th century , the Danube dug deeper and deeper into the river bed. The deepening could be stopped by the construction of the dam power plant. The old Danube and the waters of the Lobau will get enough water again after the construction of the dam. However, this also greatly reduced the natural fluctuations in the groundwater level, with the resulting ecological problems.

In order to enable fishing to migrate, a bypass stream was built on the site of the Danube Island.

The electricity generated in the Freudenau power plant was sold in Germany as green electricity by the Lichtblick AG company.

Stromhaus

The power house in the Freudenau power plant was designed as an information center on electricity in general and the Vienna barrage in particular. Videos, computer games and models illustrate the topic for children and adults. This is also the starting point for tours through the power plant.

literature

Gerhard A. Stadler, Manfred Wehdorn , Monika Keplinger, Valentin E. Wille: Architektur im Verbund (= series of research in Verbund 100). Springer Verlag, Vienna et al. 2007, ISBN 978-3-211-75795-6 .

Panorama picture

Freudenau power plant - viewed upstream

Web links

Commons : Kraftwerk Freudenau - collection of images, videos and audio files

Individual evidence

^ Danube power station Freudenau. Wien Energie, accessed on August 19, 2016 (German).
↑ Power plants for Lichtblick-Strom Energy from clean sources ( Memento from January 4, 2010 in the Internet Archive )

[1] Danube power station Freudenau. Wien Energie, accessed on August 19, 2016 (German).

[2] Power plants for Lichtblick-Strom Energy from clean sources ( Memento from January 4, 2010 in the Internet Archive )