Lech level 8a - Kinsau

Lech level 8a - Kinsau
View from the north
location
Coordinates	47 ° 52 '32 "  N , 10 ° 55' 22"  E Coordinates: 47 ° 52 '32 "  N , 10 ° 55' 22"  E
country	Germany
place	Kinsau
Waters	Lech
Kilometers of water	km 114.5
Height upstream	651  m above sea level NHN
power plant
operator	Uniper power plants
Start of planning	1983
construction time	1990-1992
Start of operation	1991
technology
Bottleneck performance	9.2 megawatts
Average height of fall	7.7 m
Expansion flow	140 m³ / s
Standard work capacity	41.7 million kWh / year
Turbines	2 + 1 Kaplan turbines
Others
was standing	2019

The Lech barrage 8a - Kinsau is a run- of- river power plant on the Lech between Schongau and Landsberg and is located on river kilometer 114.5 in the municipality of Kinsau in the Landsberg am Lech district .

The operator of the run- of -river power plant is Uniper Kraftwerke , the generated output is 9.2 MW with a drop height of 7.7 meters.

The barrage is located in the Steilhalden and Lech River Meadows nature reserve between Kinsau and Hohenfurch .

history

sawmill

First there was a sawmill a little northwest of today's power plant area , which was bought by the Hegge paper mill around 1900.

Old power plant

As early as 1905–1907, a canal power plant was built on the site of the former sawmill . A new canal, significantly longer and wider, was laid a little southeast. An overflow weir at the beginning of the canal allowed excess water to drain away , so-called raft lanes were created for the Lech raftsmen who were still active at the time . The power plant was initially used to grind wood pulp for the Schongau paper mill . Two Francis shaft turbines each transmitted their 650 HP (478 kW) to large power grinders. The two turbines came from MAN Augsburg , ran at 80 rpm and had a suction capacity of 10.17 m³ / s. The Kinsau cog railway was also built to transport the wood pulp , connecting the power station (638 m above sea level) with the Kinsau train station (711 m above sea level) on the Landsberg – Schongau railway line on the top terrace of the Lech.

As early as 1912, an additional 2450 HP (1801 kW) twin Francis turbine with generator was installed to supply the paper mill in neighboring Schongau with electricity. From 1928, all turbines were used to generate electricity . In 1941 a Kaplan turbine with a generator output of 1400 kW was added. The former wood grinding shop became a pure power plant.

Every year, between 2100 marks in 1909 and 5613 Reichsmarks in 1941 had to be paid to the Bavarian state for water use.

In the course of the power plant construction between Schongau and Landsberg, several run-of-river power plants were built from 1940 onwards according to the " Arno Fischer construction " on behalf of Bayerische Wasserkraft AG (BAWAG). However, negotiations with the paper mill in Schongau failed in December 1942 and the previous power plant remained in place.

After the BAWAG power plant series between Landsberg and Schongau had largely been expanded, disputes arose between the operator of the Kinsau power plant and BAWAG over the planned surge operation. Finally, in 1960, the operator gave BAWAG the right of usufruct over the power plant.

New building

In March 1990 the power plant, which had meanwhile become unprofitable, was finally demolished. Remnants of the old fortifications and the canal can still be seen today. The completely new plant, which was planned to start in 1983 and cost 94 million marks, was built by Bayerische Wasserkraftwerke AG in two separate arms by 1992. The main power plant was built in the remaining part of the old canal, the secondary power plant in the Lech, which formerly flowed below the weir. Of the total costs, 30 million marks went to nature conservation , including a fish ladder .

The new power plant consists of a secondary power plant completed in 1992 with an output of 1.1 MW at a height of 6.5 meters, which is used to feed the old Lech, and a main power plant completed in 1991 with an output of 8.1 MW and a height of fall of 7.7 meters, which processes the main amount of water. The main power plant has two Kaplan turbines with an output of 4.05 MW each. On average, 79 m³ / s of water run through the entire system. The expansion flow of the main power plant is 120 m³ / s and the secondary power plant is 20 m³ / s. In the event of a flood, four weir fields were built in, which can discharge a maximum of 1400 m³ / s of water.

The standard energy capacity for the small power plant is 9700  MWh per year and for the main power plant it is 32,000  MWh per year.

In this way, 10–12,000 households are supplied with electricity each year.

• 

  Turbine of the old power plant from 1907, MAN Augsburg (650 HP)

• 

  View from the Lechhalde 1910, old power plant in the upper right corner of the picture

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  Ruins in the former inflow area of ​​the canal power plant

Individual evidence

1. ^ Paper mill G. Haindl. Retrieved February 8, 2019 . 
2. ↑ The hydropower plant on the Lech near Kinsau. Retrieved January 18, 2019 . 
3. ↑ Anton Lichtenstern, Thomas Wunder: The steam hammer worked day and night. In: Augsburger Allgemeine. 2015, accessed January 18, 2019 . 
4. ↑ Peter Paul Schmitt: The hydroelectric power station on the Lech near Kinsau . Ed .: Bayerische Wasserkraftwerke Aktiengesellschaft. Munich 1990.
5. ↑ TK25 Schongau 8131 . 1964.
6. ↑ What is hidden in the power plant. December 15, 2006, accessed January 18, 2019 . 
7. ↑ Analysis of the use of hydropower in Bavaria. (PDF) Retrieved January 19, 2019 . 
8. ↑ The power plant is close to their hearts. In: Augsburger Allgemeine. 2017, accessed February 8, 2019 .