Neufinsing power plant

Neufinsing power plant
North side of the Neufinsing run-of-river power plant
location
Coordinates	48 ° 13 '18 "  N , 11 ° 47' 56"  E Coordinates: 48 ° 13 '18 "  N , 11 ° 47' 56"  E
country	Germany
place	Finsing
Waters	Mittlere-Isar-Kanal , Ismaninger reservoir
power plant
operator	Uniper Kraftwerke GmbH
Start of operation	Francis turbines: 1924 Kaplan turbines: 1960/1961 tubular turbines: 1963
technology
Bottleneck performance	8 megawatts
Average height of fall	Francis turbines: 11.50 m older Kaplan turbines, 8.80 m, newer Kaplan turbine: 10.60 m
Expansion flow	192 m³ / s
Turbines	2 horizontal Francis turbines 2 vertical Kaplan turbines 2 inclined tube turbines
Others

The Neufinsing power plant is a hydropower plant on the Middle Isar Canal . It is located at the outlet of the Ismaninger reservoir in the Neufinsing part of the Finsing municipality in the Erding district .

The name used by the operator Uniper Kraftwerke GmbH is run-of-river power plant Finsing , as the town of Neufinsing only emerged in its immediate vicinity after the construction of the power plant. However, the power plant is generally named after its location in the now larger town of Neufinsing.

description

South side with the Middle Isar Canal (right)

building

The power plant is an extensive complex, which mainly consists of the approximately 100 m long machine house positioned across the operating channels. Immediately next to the machine house is a rectangular tower that can be seen from afar, in which the control center, offices and, earlier, the operations manager's apartment were located. Four further office and factory buildings are grouped around the tower. At the entrance there is a gatehouse with a pillar porch. A canteen has been set up in the rear part of the gatehouse.

The architectural design for the power plant comes from Otho Orlando Kurz . The buildings are under monument protection .

Inlet channels

The power plant has separate inlet channels from the reservoir, from the Middle Isar Canal and from the receiving water (drainage ditches for the fish ponds). The different water levels in these bodies of water can also be raised or lowered independently of one another by the power plant. The mean gradient of 10.55 m given for the power plant can therefore easily be misunderstood. To regulate the inlets, there are numerous concrete walls, weirs and gates in the headwater of the power plant, with which the water can also be diverted into other inlet channels. At the northern end of the machine house there is a blank shot, a canal blocked by a weir, with which the water from the reservoir and from the Middle Isar canal can be directed past the power plant if necessary. The water from the receiving water can be channeled under the southern end of the machine house. The so-called stream collector, which runs in the south below the receiving water, is also passed under the machine house. Since 1950 its water has been used in its own small machine house integrated into the weir.

machinery

One of the two Francis turbines with the Schorch generator

Two large Francis turbines , which were manufactured in 1923 and 1924 by Fritz Neumeyer AG, Munich, are located in the center of the machine hall . They are driven by the water of the Middle Isar Canal over a nominal gradient of 11.50 m with a flow rate of 23 m³ / s each. They drive a Schorch three-phase generator with a nominal output of 7500 kVA at 150 rpm via a common, horizontal shaft. Since it was commissioned on December 20, 1924, this group has been running essentially without any problems and without major repairs.

The water from the reservoir drives two Kaplan turbines with a nominal gradient of 8.80 m and a flow rate of 55 m³ / s each , which were put into operation on April 26, 1960 and March 22, 1961, respectively. They each drive a synchronous generator with a nominal output of 4000 kVA via a vertical shaft at 125 rpm.

The water from the receiving water flows with a nominal gradient of 10.60 m and a flow rate of 33 m³ / s each through two inclined Kaplan bulb turbines , each of which has a nominal output of around 3000 kW at a speed of 214 / min. They each drive a synchronous generator mounted on the inclined shaft of the turbine with a nominal output of 6300 kVA. These units were commissioned on June 13, 1963.

The electrical output of the power plant is 8 MW.

In the small machine house, the water from the brook collector drives a Kaplan turbine with a nominal gradient of 4.5 m and a flow rate of 5.4 m³ / s, which develops a nominal output of around 240 kW at a speed of 750 / min and a synchronous Drives generator with a nominal output of 275 kVA. This unit, used only as a house machine, was put into operation on July 25, 1950.

history

The power plant, which opened in 1924, was originally the first of the run-of-river power plants forming the power plant stairs on the Mittlere-Isar Canal . The power plant and the subsequent power plants Aufkirchen , Eitting and Pfrombach were built by Mittlere Isar AG , which were later taken over by Bayernwerk , which in turn was merged into E.ON , the parent company of the former operator E.ON Wasserkraft GmbH. As a result of the spin-off of Uniper SE in 2016, it now belongs to Uniper Kraftwerke GmbH. In 1951, the power station stairs were supplemented by the Ismaning reservoir power station at the inlet of the reservoir.

The Neufinsing power plant was the control center for the entire power plant staircase, as the individual power plants must be controlled in a coordinated manner. Originally, the Neufinsing power plant only made the specifications that had to be implemented by the control centers in the individual power plants. Since the 1990s, E.ON's power plants on the Mittlere-Isar Canal and on the Isar above Munich and below the canal have been controlled directly from the control center in the Neufinsing power plant. Since May 1, 2011, these power plants have been controlled from the company's headquarters in Landshut together with the E.ON power plants on the Lech and Danube .

Others

The power plant can be visited in guided groups by appointment. The Finsing floating debris museum is located in the power station building, which is only open by telephone .

Individual evidence

1. ^ Power plant Neufinsing ( Memento from February 22, 2016 in the Internet Archive ) at the Bavarian State Office for Monument Preservation
2. ^ E. Matern: ( Page no longer available , search in web archives: Die Wasserkraftanlagen in Bayern, Die Mittlere Isar ) in Zentralblatt der Bauverwaltung 43. 1923, pp. 241-252, pp. 242 f
3. ↑ On the Mittlere-Isar Canal: Plague alarm on the turbines. In: sueddeutsche.de. October 10, 2017, accessed March 4, 2020 . 
4. ↑ The data of the machines were taken from the signs attached to them.
5. ^ Stephan Deutinger: Mittlere Isar AG in: Historisches Lexikon Bayerns

Web links

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

• Aerial photo of the power plant on the website of the Bavarian State Office for the Environment