Natural power storage facility in Gaildorf

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Natural power storage facility in Gaildorf
Natural power storage facility in Gaildorf under construction (February 2017)
Natural power storage facility in Gaildorf under construction (February 2017)
location
Natural power storage facility in Gaildorf (Baden-Württemberg)
Natural power storage facility in Gaildorf
Coordinates 48 ° 59 ′ 32 "  N , 9 ° 46 ′ 48"  E
country GermanyGermany Germany
Baden-WürttembergBaden-Württemberg Baden-Württemberg
place Gaildorf
Waters 4 upper basins at the lower basins of the wind turbines in Kochertal
f1
power plant
owner Naturstromspeicher GmbH ( Max Bögl Group)
Start of planning September 2011
Start of operation 2017 (wind farm)
2020 (pumped storage power plant)
technology
Average
height of fall 		200 m
Expansion flow 9.5 m³ / s
Standard work capacity 42 million kWh / year
Turbines 3 reversible Francis turbines
Generators 4 × 3.4 MW (wind power)
16 MW (hydropower)
Others
Website www.naturspeicher.de
was standing 2017

The natural electricity storage facility in Gaildorf is an energy project under construction near Gaildorf in which a wind farm is combined with a pumped storage power plant . The project was presented to the public in September 2011; The groundbreaking took place in April 2016. The wind turbines , in whose tower base water is stored, were put into operation in December 2017 and connected to the grid. The pumped storage plant is scheduled to go into operation in 2020.

project goal

The projectors hope that the project will make a contribution to a reliable and predictable power supply from the fluctuating energy sources wind energy and photovoltaics and want to provide balancing energy.

financing

The project costs are set at EUR 75 million. The project will mainly be financed by the Max Bögl group of companies. Citizens from the area should be able to participate financially in the project through a cooperative. Due to its pioneering function and demonstration character for other similar projects, the project is funded by the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety with 7.15 million euros.

construction

Wind farm

The first completed wind turbine of the type GE 3.4-137. Hub height 178 m.

Four GE 3.4-137 wind turbines with a hub height of 178 m, a rotor diameter of 137 m and a nominal output of 3.4 MW each were installed on the partial elevation of the Limpurger Mountains near Gaildorf between Kochertal in the west and Eisbachtal in the east . The forecast annual electricity generation from wind is 42 GWh. The 40 meter high tower foundations of the wind turbines, which are also used as water reservoirs, allow large hub heights. One of the four systems held the world record for wind turbines from autumn 2017 to autumn 2019, with a total height of 246.5 m and a hub height of 178 m. The locations and altitude of the four wind turbines are: WEA2 ( ⊙ , 501.5  m above sea level ), WEA3 ( ⊙ , 489.5  m above sea level ), WEA4 ( ⊙ , 489.5  m above sea level ), WEA5 ( ⊙ , 485.5  m above sea level ).

pumped storage power plant

The grid feed-in capacity of the pumped storage power plant is up to 16 MW. According to the project operators, the storage capacity of the entire system is 70 MWh, which corresponds to more than five hours of storage operation for all wind turbines at nominal output or a good four hours of electricity generation by the hydropower plant at nominal output.

Upper basin

Each of the four wind turbine locations has upper basins made of precast concrete parts , each of which is divided into two sub-volumes of different heights. The 40 meter high cylindrical tower foundation with a diameter of 16 meters (called the active pool by the operator) can be filled with water up to 31 meters. The tower foundation stands in a cylindrical water basin with a diameter of 63 meters (called passive basin by the operator). The height of the passive basins is dimensioned differently in the four systems, their storage height is between eight and 13 meters. Active and passive pools should be filled and emptied one after the other. A total of up to 160,000 m³ of water can be stored. In July 2017, it was decided not to build an upper basin at WEA2 for the time being. The terms active basin and passive basin have so far not been used in the specialist literature on pumped storage power plants; they were used for the first time by the operator. Technically, both have the same function of a storage basin.

Piping system

An approximately 3.2 km long pressure pipe system is to connect the four water storage tanks of the wind farm with each other and with the power house in the valley of the Kocher near Gaildorf-Unterrot , which is about 200 m below. The polyethylene plastic pipes ("PE") in DN1800 / DN1600 are to be supplied by Egeplast and installed from March 2018 using a trench milling process with a daily output of 60 to 100 meters. The steel distribution pipeline known as the “trifurcator”, which creates the transition from the PE pressure line to the three turbine branch lines in the power house, was prefabricated by Bilfinger VAM Anlagentechnik GmbH in Wels, Upper Austria, and installed in the power house in autumn 2018.

Power house

The power house is to be built on the eastern bank of the Kocher. The connection to the lower basin to the west of the digester is via a DN 2200 culvert . Three reversible Francis turbines from Voith Hydro with a total output of 16 MW are planned for the power house . In storage mode, water is pumped from the lower basin into the upper basin via the pump turbines , and when electricity is required it flows back into the lower basin via the turbines. Switching between power generation and storage operation should be possible in 30 seconds, and storage efficiency should be around 80%. ( ⊙ )

Lower basin

An already planned flood basin at the stove will be the lower basin, which is to be designed in a natural way. The flood basin is designed in such a way that the water from the cooker does not reach it until a ten-year flood ( HQ 10 ). The volume of the lower basin is designed so that a retention space of 30,000 m³ is kept free when the lower basin is filled. After a flood event in which the lower basin served as a retention area, the fish in the basin must be fished. For the first filling and for refilling after repairs, a withdrawal of water from the cooker in an amount of 2 m³ / s is approved, provided that the remaining minimum drainage of the cooker is 10 m³ / s. In operation of the pumped storage power plant, apart from evaporation ( evapotranspiration ), only the amount of pendulum water is pumped back and forth. The pipes and the turbine system are designed for a flow rate of 9.5 m³ / s.

Substation

To the south of the power house, a substation will be built to connect to an existing 110 kV line. Network operator is Netze BW .

politics

In 2011, the city ​​of Gaildorf initiated a survey and a discussion forum under the title e-Citizen Portal on the natural electricity storage project. On December 11, 2011, a referendum about the project took place in Gaildorf. In this, 25.2% of those eligible to vote voted for the project, 19.3% rejected it; thus the city administration was commissioned by the voter to negotiate the use of urban land with the investors.

Species protection mapping was carried out and a wind measuring mast was erected, with the help of which the wind prospect of the site was determined for two years . On December 12, 2011 it was announced that Environment Minister Franz Untersteller ( Greens ) expressly welcomed the pilot project. The Gaildorf municipal council had already voted in favor of the project with a large majority. Annette Sawade (SPD), member of the Bundestag from Hall, is also behind the green electricity storage system and its contribution to the success of the energy transition.

See also

literature

  • District Office Schwäbisch Hall (Ed.): Water law proceedings for the construction and operation of the natural electricity storage facility in Gaildorf . May 6, 2014 ( PDF. 211 kByte ).
  • District Office Schwäbisch Hall (Ed.): Immission control approval . Section May 1, 2014 ( PDF. 211 kByte ).

Web links

Individual evidence

  1. ↑ a b Voith supplies pump turbines for the first combined wind and pumped storage power plant. www.windkraft-journal.de, November 15, 2016, accessed on November 11, 2017 .
  2. ↑ Südwestpresse, September 15, 2011: Gaildorf becomes "Naturstromspeicher" city ( Memento from September 24, 2015 in the Internet Archive )
  3. ↑ Ralf Köpke: Highest wind turbine in Gaildorf in operation . In: E & M Daily, December 20, 2017. Energie & Management Verlagsgesellschaft mbH, Herrsching
  4. ↑ Jochen Höneß: Gaildorf natural electricity storage facility goes into operation. In: Südwestpresse, December 19, 2017.
  5. ↑ A new type of electricity storage system combines wind and water power . In: IWR - International Economic Forum for Renewable Energies , April 28, 2016. Accessed April 29, 2016.
  6. ↑ Richard Färber: Wind power from the water storage. www.tagblatt.de, October 20, 2016, accessed on November 10, 2017 .
  7. ↑ In: Renewable Energies, print edition June 2015, p. 39
  8. ↑ Wind power plus pumped storage equals electrification . Press release from the Federal Environment Ministry. Retrieved July 1, 2015
  9. ↑ GE's 12MW Haliade-X produces first power . In: Windpower Monthly , November 7, 2019. Retrieved December 18, 2019
  10. ^ GE to supply combined wind and hydro pumped storage pilot project . In: Windpower Monthly , September 30, 2016. Retrieved September 30, 2016.
  11. ↑ Wind turbine giant built in the southwest ( memento of the original from October 27, 2017 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. . In: Südwest Presse , October 26, 2017. Accessed October 26, 2017. @1@ 2Template: Webachiv / IABot / www.swp.de
  12. ↑ Max Bögl installs record-breaking 246.5-meter turbine . In: Windpower Monthly , October 27, 2017. Retrieved October 27, 2017.
  13. ↑ The world's tallest wind turbine is located near Stuttgart . In Sonne, Wind und Wärme , October 27, 2017. Accessed November 19, 2017.
  14. ↑ District Office Schwäbisch Hall (Ed.): Immissionsschutzrechtliche permission . Section 1 May 6, 2014, p. 4, 13-14 ( PDF ).
  15. ↑ Highest wind turbines in the world: Max Bögl builds modern energy storage with a Liebherr mobile crane. Liebherr , August 15, 2017, accessed November 10, 2017 .
  16. ↑ www.speicher-bar.de/naturstromspeicher/ ( Memento of the original from December 1, 2017 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.speicher-bar.de
  17. ↑ The municipal council says yes: New design for the lower area of ​​the wind tower decided ( memento of the original from December 29, 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. . Retrieved August 7, 2015 @1@ 2Template: Webachiv / IABot / www.naturstromspeicher.de
  18. ↑ Jochen Höness: The large construction site gets a second chapter. hz-online.de, July 22, 2017, accessed on November 11, 2017 .
  19. ↑ Trucks roll on the construction site every minute. Retrieved November 11, 2017 .
  20. ↑ egeplast international and MBS Naturstromspeicher GmbH cooperate as part of the Max Bögl group of companies. edgeplast, accessed November 11, 2017 .
  21. ↑ Landratsamt Schwäbisch Hall (Ed.): Water law proceedings for the construction and operation of the natural electricity storage facility in Gaildorf . May 6, 2014, p. 37 ( PDF. 211 kByte ).
  22. ↑ The water battery pilot project relies on the expertise of Austrian companies . In: zek future energy and municipal technology . Edition 06, December 2018, p. 65-67 ( online ).
  23. ↑ Landratsamt Schwäbisch Hall (Ed.): Water law proceedings for the construction and operation of the natural electricity storage facility in Gaildorf . May 6, 2014, p. 4 ( PDF. 211 kByte ).
  24. ↑ Natural energy storage presented . In: Südwestpresse , October 22, 2013. Retrieved October 24, 2013.
  25. ↑ Naturstromspeicher presentation brochure . Page 4, accessed August 7, 2015
  26. ↑ Landratsamt Schwäbisch Hall (Ed.): Water law proceedings for the construction and operation of the natural electricity storage facility in Gaildorf . May 6, 2014, p. 10, 34, 38 ( PDF. 211 kByte ).
  27. ↑ Wind power with built-in storage . dated December 12, 2011, accessed August 7, 2015
  28. ↑ Brief, but decisive ( memento of September 24, 2015 in the Internet Archive ). In: Südwest-Presse , December 12, 2011
  29. ↑ Environment Minister welcomes citizens' vote for green electricity storage . In: t-online.de , December 12, 2011. Accessed December 12, 2011.
  30. ↑ Citizens should decide on the Gaildorf Naturstromspeicher project ( Memento from December 28, 2015 in the Internet Archive ) Südwestpresse, October 21, 2011. Accessed December 12, 2011
  31. ↑ Federal Ministry for the Environment funds natural electricity storage with 7.15 million euros ( Memento of the original from December 29, 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. . Retrieved August 7, 2015 @1@ 2Template: Webachiv / IABot / www.naturstromspeicher.de