Markersbach pumped storage plant
| Markersbach pumped storage plant | |||
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| location | |||
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| Coordinates | 50 ° 30 '35 " N , 12 ° 52' 8" E | ||
| country |
 Germany
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| place | Markersbach | ||
| Waters | Great Mittweida | ||
| Data | |||
| Type | pumped storage power plant | ||
| Primary energy | Hydropower | ||
| power | 1046 megawatts | ||
| owner | Vattenfall | ||
| operator | Vattenfall Wasserkraft GmbH | ||
| Project start | 1961 | ||
| Start of operations | 1979 | ||
| turbine | 6 × Francis turbine 1 × Ossberger turbine |
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| Website | Vattenfall | ||
| was standing | 2019 | ||
 Markersbach dam, lower basin |
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The Markersbach pumped storage plant (PSW Markersbach) in Saxony , which went online in 1979, is the second largest pumped storage power plant in Germany with an output of 1046 megawatts and is one of the largest hydropower plants of its kind in Europe.
Brief description
The PSW Markersbach was built between 1970 and 1981 near Markersbach in the Ore Mountains and put into operation in 1979. It was repaired in 1990 and 1998. It consists of an upper basin and a lower basin with the power plant. The machines are located in a 44 m high cavern , which is about 100 m below the administration building and a little below the bottom of the lower basin.
The grid connection is made via the Chemnitz-Röhrsdorf switchgear in the 380 kV extra - high voltage grid of the transmission system operator 50Hertz Transmission .
Lower basin
The barrier structure of the lower basin ( location ) is a 57 m high (51 m above valley floor) and 393 m long earth dam with an external asphalt seal. It has a volume of around 920,000 m³ , the area when fully blocked is about 49 ha with a storage volume of 7.7 million m³. The maximum storage volume is 7.975 million m³. The dam crest is 563 m above sea level. NN . The dammed body of water is the Große Mittweida .
Upper basin
The upper basin ( location ) consists of a 26 m high and 2590 m long ring dam on the top of the Hundsmarter at 848.4 m above sea level. NN , which was flattened when the dam was built. This dam is also an earth dam with an asphalt outer seal and, with a construction volume of 3,500,000 m³, the largest dam in Saxony. This makes it the second highest reservoir in Saxony after the Carlsfeld dam. The area in the event of a full congestion is around 43.6 hectares with a volume of around 6.5 million m³. Access to the upper basin is free, with around 150 steps to be overcome. He is under constant video surveillance.
Building history
Preparations
In 1961 the GDR government announced a public competition to determine and determine the location of a new pumped storage power plant. Two years later, the Markersbach location was chosen, and the development of a basic technical concept began. In 1964 the VEB Schachtbau Nordhausen carried out the first geological explorations for the construction of the lower basin in the Mittweida valley. The first attempts at pouring were carried out in 1966 on what would later become the upper basin by the Weimar dam construction company . The following year, the GDR Ministry of Coal and Energy decided to build underground as a cavern power station with an expansion capacity of 1000 megawatts. In 1968 the development of the projects and the development of the building site began. After all explorations and preparatory work had been completed, the actual construction work began. This included the establishment of construction sites, construction roads and supply networks, the expansion of the Grünstädtel station and the evacuation of the village of Obermittweida .
execution
On January 1st, 1970 the general contractor VEB Kombinat Kraftwerkanlagenbau started its work. On June 1 of the same year, VEB Schachtbau Nordhausen began mining work on the auxiliary tunnel, and on April 1, 1972, the dams were poured on the upper basin by the Weimar dam construction . Exactly one year later the Polish company Kopex carried out the shaft sinking . After the BMK Süd had completed the work on the stilling basin , the Große Mittweida was diverted through a diversion tunnel on August 14, 1973 and the exploration on the dam of the lower basin began. On March 28 and August 13, 1974, the Nordhausen shaft construction had cut through the two headrace pipes in the upper basin as a pilot tunnel. On April 15, 1975, the construction of the Weimar dam began with the embankment in the lower basin, and the VEB Autobahnbaukombinat , Weimar division, carried out the sealing work on the upper basin. After the excavation in the cavern ended on November 15, 1975, the foundation stone was laid seven days later . On January 1st of the following year the Czechoslovak company ČKD Blansko assembled the first machines. On February 6, the first pipe shot into the headrace was carried out by IKR Bitterfeld . In the following year, the first spiral turbine arrived at the construction site on April 12th, and VEB Starkstromanlagenbau Otto Buchwitz Dresden and Leipzig / Halle began assembly work on the switchgear on April 21st . Exactly one year later, the lower basin could be dammed for the first time. The 380 kV overhead line to the pumped storage power plant was installed on August 1, 1978, and the first 380 kV transformer was transported to the construction site on November 1. The lower basin was filled for the first time on April 21, 1979 and the 380 kV switchgear was put into operation six days later. After the first grid connection of pumped storage set 1 took place on June 20, 1979, in 1981 the full capacity of the Markersbach pumped storage plant was available to the grid.
Development after 1990
After German reunification , responsibility and operation of the pumped storage plant was transferred to Vattenfall Europe . According to a plan that began in 2010, the target for the operational backlog should be increased by 1.49 meters at the lower basin and 1.71 meters at the upper basin. This would have increased the working water volume by 735,000 m³. At the same time, the turbine work should be increased by 510 MWh and the pumping work by 650 MWh. The construction work was scheduled for the period from April 2015 to September 2016. These plans were put on hold in May 2015. As part of the Vattenfall Group's exit from lignite generation, a sale of the power plant was also under discussion until April 2016, but this did not take place.
See also
- List of hydropower plants in Germany
- List of dams in Germany
- List of bodies of water in Saxony
- List of pumped storage power plants
- Hydropower
Web links
- Talsperren.net - Markersbach pumped storage plant - technical data
- Literature from and about the Markersbach pumped storage plant in the Saxon Bibliography
Individual evidence
- ↑ a b Markersbach pumped storage power plant - one of the largest hydropower plants in Europe. In: vattenfall.com. Retrieved December 11, 2019 .
- ↑ List of power plants. Federal Network Agency , November 11, 2019, accessed on December 11, 2019 .
- ^ The DEFA studio for documentary films, directed by Winfried Junge, shot the report "Termin Spirale 1" (1977) about it.
- ↑ tender pelvic extension - PSW Markersbach .
- ↑ Announcement on the layout of the planning documents in the plan approval procedure "Pump storage plant Markersbach - basin expansion" (PDF; 145 kB).
- ↑ Free press: Raising the dam crest put on hold .
- ↑ Free press: Markersbach pumped storage power plant is to be sold .
- ^ Free press: Markersbach stays with Vattenfall .