Happurg pumped storage power plant
| Happurg pumped storage power plant | |||
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| location | |||
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| Coordinates | 49 ° 29 '14 " N , 11 ° 28' 29" E | ||
| country |
 Germany
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| Waters | Lake Happurger See | ||
| Data | |||
| Type | pumped storage power plant | ||
| Primary energy | water | ||
| power | 160 MW | ||
| owner | Uniper | ||
| Start of operations | 1958 | ||
| Shutdown | 2011 | ||
| turbine | 4 Francis turbines | ||
The Happurg pumped storage power plant near Happurg in the Franconian district of Nürnberger Land ( Bavaria ) was in operation from 1958 to 2011. The lower basin of the power plant system is Lake Happurg . The 1.8 million cubic meter upper basin is located on the Deckersberg to the west and has been renovated since 2011.
technology
The hydropower plant is operated by Uniper . It has four turbine sets with a total output of 160 megawatts at a head of 209 m (difference between the water level in the upper and lower basins). The upper basin has a volume of 1.8 million cubic meters and can store water with energy for 840 MWh of electricity. This makes it the largest pumped storage power plant in Bavaria, comparable to Langenprozelten near Gemünden am Main. The power grid connection takes place at the 110 kV high voltage level in the E.ON Netz distribution network .
history
After four years of construction, the power plant went online in 1964. In the 47 years of operation, the power plant was 99 percent operational, a top performance for German power plants.
In 2011, 15 employees were still employed for maintenance and repairs; the power plant was controlled from the Munich headquarters or from Landshut .
Renovation work
On January 18, 2011, the measuring devices at the monitoring wells in the upper basin showed increased values. E.ON then caused the power plant to be shut down and the upper basin to be emptied as a precaution in order to examine the basin floor for possible damage. Cracks of up to 12.5 meters in length and 1.5 meters in depth were found in the bottom of the basin. As a result, a detailed investigation program into the cause of the damage was carried out.
The renovation work on the upper basin should begin in summer 2012 and continue until the end of 2013. The plan was to insert around 11,000 concrete columns with a diameter of 60 cm and a length of up to 20 m into the karst soil, which would take the main load of the water tub. In the future, the pool floor was to consist of a 16 cm thick base layer made of gravel and bitumen, over which a drainage system with sensors, a geotextile ceiling and, as the top end, a 1.20 m thick layer of clay. The restart of the power plant was planned for the end of 2013.
After further soil investigations, the remedial measures should begin in spring 2014. As a result, the planned start-up date was postponed to summer 2016. The dam of the upper basin was to be completely renewed.
In 2013, the restart was postponed to 2017 after the renovation report was available.
In September 2015 it became known that the start of the renovation measures had been postponed to 2019 at the earliest [out of date] , but that the legal basis for the renovation had been created through the approval of the planning approval decision of the district office of Nürnberger Land.
As part of this work, the dam crest is to be widened by 4 meters, which should offer the possibility of a later increase and thus a capacity expansion of the storage facility by 10%. The restart would then not take place before 2021.
outlook
Allegedly, the power plant has been continuously serviced since 2011 and should be technically operational. Pumped storage power plants are important for balancing out the fluctuating feed-in from sun and wind. You can store excess electricity in the upper basin and can even start without an external power supply in the event of a complete power failure. ( Black start capability ).
In 2018, 43 pumped storage plant projects in Germany were put on hold because, according to the current legal guidelines, only electricity production is remunerated, but special services such as black start capability, provision of control power and reactive power supply are not taken into account.
The operator is prepared to invest a three-digit million amount for the rehabilitation of the upper basin. The prerequisite would be that the government adapt the guidelines for pumped storage power plants to the guidelines for solar and wind power plants in such a way that economic operation is guaranteed.
Picture gallery
The power plant from the air
The drained upper basin Deckersberg (2016)
Inlet structure of the Upper Deckersberg basin
See also
Web links
Individual evidence
- ^ Nordbayern.de: Happurg pumped storage power plant, May 14, 2018
- ^ Nordbayern.de: Happurg pumped storage power plant, May 14, 2018
- ↑ Federal Network Agency power plant list (nationwide; all network and transformer levels) as of July 2nd, 2012. ( Microsoft Excel file, 1.6 MB) Archived from the original on July 22, 2012 ; Retrieved July 21, 2012 .
- ↑ Hersbrucker Zeitung: Leak in the upper basin ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. , January 27, 2012.
- ^ Nürnberger Nachrichten of December 22, 2011, page 16: See on pillars
- ^ New schedule according to Hersbrucker Zeitung of March 9, 2012, page 1
- ↑ n-land, November 14, 2012
- ↑ Christian Moormann, Tobias Heiserer, Karl-Heinz Straßer, Theodor Strobl,: Rehabilitation of the upper basin of the Happurg pumped storage power plant after erosive sinkholes in the basin floor. (PDF) (No longer available online.) Uni-stuttgart.de, archived from the original on March 4, 2016 ; Retrieved October 19, 2014 .
- ↑ Andrea Pitsch: Happurger Oberbecken: masses of water in the "underground car park". In: www.nordbayern.de/region/hersbruck. July 25, 2013, accessed October 19, 2014 .
- ^ Marita Münster: Upper basin: renovation only 2019. In: n-land.de. September 24, 2015, accessed October 24, 2018 .
- ↑ Fränkische Landeszeitung of September 30, 2015, p. 15: Conditions as at Berlin's major airport
- ^ Nordbayern.de: Happurg pumped storage power plant, May 14, 2018
