Iller barrage 5 - Fluhmühle

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Iller barrage 5 - Fluhmühle
View from the northwest
View from the northwest
location
Iller barrage 5 - Fluhmühle (Bavaria)
Iller barrage 5 - Fluhmühle
Coordinates 47 ° 50 '24 "  N , 10 ° 11' 36"  E Coordinates: 47 ° 50 '24 "  N , 10 ° 11' 36"  E
country Germany
place Altusried
Waters Iller
Kilometers of water km 77.6
Height upstream 630  m above sea level NHN
power plant
operator Lechwerke
Start of operation 1944
technology
Bottleneck performance 5.2 megawatts
Average
height of fall 		7.0 m
Expansion flow 100 m³ / s
Standard work capacity 21.2 million kWh / year
Turbines 4 Strafloturbines
Generators 4 outer rim generators
Others
was standing 2019

The Iller barrage 5 - Fluhmühle is a barrage of the Iller between Kempten and Memmingen at river kilometer 77.6. It is located in the area of ​​the Altusried market in the Oberallgäu district .

history

As early as 1937/38, a power plant based on the Arno Fischer design was built on the Iller at Iller level 7 - Maria Steinbach . The advantage of this version was the camouflage , which was important for the war effort , the few roof areas were covered with greenery and the power plant itself could be completely overflown by lowering the dams. The cost savings that were also propagated later turned out to be a miscalculation.

On the Iller, after the Arno Fischer design, level 7 went online in 1938, level 6 in 1943, level 5 in 1944 and level 8 in 1948.

The power plant has a fish ladder .

The operator is Bayerische Elektrizitätswerke GmbH, a subsidiary of Lechwerke AG .

technology

The installed power of the iller barrage 5 is 5.2 MW at a drop height of 7.0 m. With the Arno Fischer power plant construction , weir and power plant form a common structure, the weir weir has 4 attached flaps and an engine room integrated in the weir body .

The power plant has four Strafloturbines arranged in parallel and four sets of machines. Each turbine has a flap in the inlet area and a contactor in the outlet area. These locking mechanisms make it possible to dry the turbines individually for inspection purposes and to walk through them.

The synchronous machine is arranged as a watertight encapsulated outer ring generator, the rotor is firmly connected to the impeller . The problem is the sealing of the bulb turbines to the generators and the practical impossibility of adjusting the impeller. Rigid propeller impellers are therefore installed in the Arno Fischer design. In principle, this limits the efficiency in the partial load range, but the poor partial load efficiency of the propeller turbines can be compensated relatively well by staggering the machines in operation.

The expansion flow of the power plant is 100 m³ / s, the standard energy 21.2  GWh per year.

  • Flood in June 2013

  • Fish ladder

  • Reservoir near Wurms

See also

Individual evidence

  1. ↑ Martin Gschwandtner: Once upon a time there was a «coal theft» technology under the yoke of the Nazi dictatorship; Arno Fischer and the wrong track of the “underwater power plants” in the period between 1933 and 1945 . GRIN, Munich 2009.
  2. ↑ Continuity: fish ladders and hiking aids on the Iller work. Retrieved February 19, 2019 .
  3. ↑ BEW hydropower plants on the Iller. Retrieved February 19, 2019 .
  4. ^ Canaan: The underwater power plant . 1945.
  5. ↑ Arno Fischer: Imperial patent 760140 - Floodable river power plants. November 24, 1944, accessed February 19, 2019 .
  6. ↑ Andreas Ringler: Floodable river power plants. 2016, accessed February 19, 2019 .
  7. ↑ Analysis of the use of hydropower in Bavaria. Retrieved January 19, 2019 .