Trianel wind farm Borkum

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Trianel wind farm Borkum
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location
Trianel Windpark Borkum (Germany)
Trianel wind farm Borkum
Coordinates 54 ° 2 ′ 30 ″  N , 6 ° 28 ′ 0 ″  E Coordinates: 54 ° 2 ′ 30 ″  N , 6 ° 28 ′ 0 ″  E
country Germany
Waters North Sea
Data
Type Offshore wind farm
Primary energy Wind energy
power Phase 1: 200 MW (in operation)
Phase 2: 203.2 MW (in operation)
operator Phase 1: Trianel Windkraftwerk Borkum GmbH & Co. KG
Phase 2: Trianel Windkraftwerk Borkum II GmbH & Co. KG
Start of operations Phase 1: 2015
Phase 2: 2020
founding Phase 1: Tripod
Phase 2: Monopile
turbine Phase 1: 40 × Adwen AD 5-116
Phase 2: 32 × Senvion 6.3M152
Website Trianel Borkum
Location of the OWP Trianel wind farm Borkum in the German Bight (green = phase 1, orange = phase 2)

The Trianel wind park Borkum , formerly the offshore wind park “Borkum West II” , is an offshore wind park in the German exclusive economic zone (EEZ) in the southern North Sea . It was built in two phases with 200 MW each. The phase 1 systems have been in operation since 2015; the offshore construction work for phase 2 began in autumn 2018 and was completed in May 2020 with the installation of the last two turbines.

General

The offshore wind farm is located on an area of ​​55.6 km² around 45 km north of the island of Borkum and 44 km north-west of the island of Juist with water depths of 25-35 meters.

The wind farm was originally developed by Prokon Nord Energiesysteme . The application for the construction and operation of 80 wind turbines dated May 26, 2006 in the version dated November 15, 2007 was approved by the Federal Maritime and Hydrographic Agency (BSH) on June 13, 2008 on the basis of the Marine Plant Ordinance .

In 2009 Trianel secured the rights to the project. Due to difficulties in financing in the context of the financial crisis from 2007 , the project was divided into two phases.

The European Commission funded the project within the framework of the European Energy Program for Recovery (EEPR) with 42.71 million euros.

Trianel wind farm Borkum I (phase 1)

33 municipal utilities are participating in the offshore project under the management of Trianel . In 2010, the investment decision of 720 million euros was made for the construction of 40 Adwen AD 5-116 wind turbines (until 2016: Areva M5000, until 2007: Multibrid 5000). Each wind turbine has a nominal output of 5  MW and a rotor diameter of 116 m.

The contract for the wiring of each wind turbine with the substation with approximately 65 km of medium submarine cable which has North German Seekabelwerke (NSW) was obtained.

For the first construction phase, a safety zone for shipping was set up in August 2011 so that 40 wind turbines can initially be installed. These should initially go online by the second quarter of 2013. When the foundations were driven into the seabed, bubble curtains were used to protect harbor porpoises from construction noise. The crane ship Oleg Strashnov placed the tripods built at WeserWind in Bremerhaven on the foundation piles that had been driven into the seabed. Two of these 60 m high and up to 900  t heavy parts were picked up by the crane ship Stanislav Yudun from the Bremer Logistic Group (BLG) offshore terminal in Bremerhaven and brought to the construction site around 45 km away. At the end of May 2013, all tripods were set, after which the wind turbines were fetched from Eemshaven in the Netherlands and erected on the tripod foundations. The installation ship Adventure , chartered by the British company MPI , transported the components for three complete wind turbines on a tour from the mainland to the construction site and mounted them on the tripods. By February 2014, half of the turbines had been erected, at the beginning of June it was reported that all 40 wind turbines ("BW 1" to "BW 40") had been installed.

In the first six months after commissioning, the wind farm fed 452 GWh of electrical energy into the grid. The yield forecast for the whole year is over 4000  full load hours (i.e. a good 800 GWh).

Trianel wind farm Borkum II (phase 2)

Phase 2 of the wind farm comprises 203.2 MW. The EU-wide tendering process for individual trades such as wind turbines, foundations or internal park cabling ran until the end of 2016 . In 2016 Senvion was awarded the contract to supply 32 turbines. The output of the Senvion 6.3M152 wind turbines has increased to 6.35 MW each. The change in the type of wind turbine with increased rated output and enlarged rotor diameter made changes to the planning documents necessary, which were approved by the BSH on October 5, 2016.

In April 2017, the investment of 800 million euros and the construction were officially decided. Construction began in autumn 2018 and commissioning should take place at the end of 2019. At the end of April 2019, the laying of the inner park cabling was completed with the connection to the 32 monopile foundation structures previously set . By December 2019, however, only half of the systems had been installed and connected. The last system was built by the Buss Energy Group on May 17, 2020 , and full commissioning took place on July 3, 2020.

Participation structure in phase 2 (as of April 7, 2017) :

proportion of Shareholders
37.99% Trianel , Stadtwerke Bochum , Stadtwerke Mosbach , Allgäuer Überlandwerk , enwor , ENNI Stadt & Service Niederrhein, Community Stadtwerke Kamen, Bönen, Bergkamen , Hertener Stadtwerke , Stadtwerke Uelzen , Stadtwerke Aalen , Stadtwerke Dachau , Stadtwerke Warburg , Stadtwerke Georgsmarienhütte , Stadtwerke Rheine , Stadtwerke Verden , Stadtwerke Bonn , Stadtwerke Hamm , Stadtwerke Lengerich
37.5% EWE
24.51% Electricity works of the city of Zurich and Fontavis

Mains connection

In mid-April 2013, the crane ship Oleg Strashnov lifted Alstom's 2400 tonne transformer platform ("BW 0") onto the foundation already installed in the construction site. The grid connection of all 72 wind turbines in the entire wind farm is made via this central transformer platform. The voltage is converted here from 33  kV to 155 kV and passed over about 7½ km via DHÜ to the HVDC converter platform DolWin alpha of the transmission system operator Tennet TSO . The HVDC line DolWin 1 establishes the connection via Norderney to the mainland.

Due to delays in the grid connection at the responsible transmission system operator Tennet, the first expansion stage of the wind farm was only put into trial operation on February 1, 2015. The official commissioning took place in July 2015.

Tripod foundations in the Trianel wind farm Borkum

Tripods have long been used in the oil and gas industry. However, different forces act on an offshore wind turbine than on a heavy oil platform, and the water depths of more than 25 m also presented a challenge. OWT - Offshore Wind Technologie then adapted the foundation design to the requirements of the OWT and a tripod design specially developed for OWT. Before being used in the Trianel wind farm in Borkum , the tripods had already proven themselves in the alpha ventus project in 2008 . Alpha ventus was planned as a test field for the offshore use of wind energy . This should provide a broad base of experience and knowledge for the construction and operation of further offshore wind farms. The tripods were then planned for the Trianel wind farm in Borkum as the first commercial use on a larger scale. The specialty of the tripod lies in the combination of the surface structure of a single-pile solution (low exposed surface, robust behavior in risk scenarios, easy transition to the tower side, production comparable to monopiles and towers) with the load-bearing effect and performance of a broken structure. The area of ​​application is geometrically determined to be on the order of at least 25 m to currently 50 m water depth.

Economic impact

From an economic point of view, the project results in some considerable potential problems for shareholders from the group of municipal utilities. The original forecasts on which the calculation was based turned out to be far too optimistic. The costs per installed MWh capacity have more than doubled over the course of the project. This resulted in not inconsiderable losses for the Stadtwerke.    

See also

Web links

Individual evidence

  1. ↑ Trianel Windpark Borkum (formerly Borkum West II)
  2. ↑ EWE and Trianel implement North Sea wind farm . In: Schiff & Hafen , issue 2/2017, p. 45
  3. ↑ Jens Kiffmeier: "Trianel II": Wind farm is now ready · Operator reports completion of construction work · Commissioning planned for summer. In: Daily port report from May 28, 2020, p. 4
  4. ↑ a b approval notice. (PDF) June 13, 2008, accessed March 24, 2017 .
  5. ↑ Course of the project. In: Trianel Windkraftwerk Borkum. Retrieved April 24, 2017 .
  6. ↑ Mona Contzen: Green light for Borkum West II wind farm. In: DerWesten . Funke Mediengruppe , May 10, 2011, accessed April 24, 2017 .
  7. ↑ European Commission (PDF)
  8. ↑ NSW receives order for Borkum West II . In: Schiff & Hafen , Heft 3/2011, p. 70, Seehafen-Verlag, Hamburg 2011, ISSN  0938-1643
  9. ↑ Trianel: Wind farm will not start until 2013 . In: Daily port report from June 28, 2012, p. 4, Seehafen-Verlag, Hamburg 2012, ISSN  2190-8753
  10. ↑ Preparations for the Trianel offshore wind farm are under way. Retrieved July 17, 2011
  11. ↑ Expansion of offshore wind energy stalls . In: Daily port report of October 23, 2012, p. 4
  12. ↑ Crane ship loads tripods . In: Daily port report of March 7, 2013, p. 4
  13. ↑ Foundation work completed . In: Schiff & Hafen , issue 6/2013, p. 119
  14. ↑ Frank Binder: The Trianel Borkum wind farm is growing . In: Daily port report from August 2, 2013, p. 4
  15. ↑ Frank Binder: North Sea wind farm finished - again no grid connection . In: Daily port report from June 5, 2014, p. 4
  16. ↑ Soest: Stadtwerke offshore wind farm reliably supplies electricity. In: Südwestfalen-Nachrichten. March 18, 2016, accessed March 18, 2016 .
  17. ↑ Buddensiek: Trianel Windpark Borkum: 452 GWh generated in 6 months. In: Sun & Wind Energy. March 21, 2016, accessed May 24, 2016 .
  18. ↑ Senvion selected for Trianel Borkum II . In: www.4COffshore.com , September 29, 2016, accessed September 29, 2016
  19. ^ First ramming for "Trianel Windpark Borkum II" . In: Schiff & Hafen , issue 11/2018, p. 41
  20. ↑ The starting shot has been given for the Borkum II offshore wind farm . In: IWR , April 10, 2017, accessed April 10, 2017
  21. ^ André Germann: Milestone in the "Trianel Windpark Borkum II" . In: Daily port report of April 24, 2019, p. 4
  22. ↑ Trianel Windpark Borkum II: Expansion slows · Offshore park will not be completed until 2020 · Delay due to Senvion insolvency and bad weather . In: Daily port report from December 6, 2019, p. 16
  23. ↑ Adrijana Buljan: Trianel Wind Farm Borkum II in full array. In: offshorewind.biz. May 18, 2020, accessed on May 19, 2020 .
  24. ↑ Jens Kiffmeier: Buss concludes major order · Offshore specialist transports the last components for Trianel wind farm. In: Daily port report from May 18, 2020, p. 3
  25. ↑ Construction diary Trianel Borkum 2. Accessed on July 22, 2020 .
  26. ↑ Alstom hands over offshore substation for wind farm to Trianel alstom.com, April 15, 2013, accessed April 25, 2013
  27. ↑ Trianel sets up a transformer platform inside the park , accessed on April 30, 2013
  28. ↑ Adwen puts Trianel offshore wind farm Borkum into operation . In: IWR , July 21, 2015, accessed July 21, 2015
  29. ↑ With three legs on the high seas. In: Deutschlandfunk. Retrieved on February 18, 2016 (German).
  30. ↑ Klotzsche losses of the Trianel wind farm Borkum high. In: fuldainfo.de. December 29, 2017, accessed on March 9, 2020 (German).