Nordsee Ost offshore wind farm

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Offshore wind farm "Nordsee Ost"
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location
Nordsee Ost offshore wind farm (Germany)
Nordsee Ost offshore wind farm
Coordinates 54 ° 26 ′ 0 ″  N , 7 ° 41 ′ 0 ″  E Coordinates: 54 ° 26 ′ 0 ″  N , 7 ° 41 ′ 0 ″  E
country Germany
Waters North Sea
Data
Type Offshore wind farm
Primary energy Wind energy
power 295 MW
owner RWE
operator Wind farm Nordsee Ost GmbH, Essen
Project start 2000, construction started in 2012
Start of operations 2015
founding Jackets
turbine 48 × Senvion 6.2M126
Energy fed in planned 1000 GWh
Website North Sea East on innogy.com
was standing November 2019
f2

Nordsee Ost is an offshore wind farm of innogy in the German Exclusive Economic Zone (EEZ) of the North Sea . The 48  wind turbines produce around 1,000  GWh of electrical energy annually . The wind farm was officially put into operation on May 11, 2015. The inauguration was carried out by Federal Economics and Energy Minister Sigmar Gabriel , who visited the wind farm and the associated converter platform HelWin alpha with his colleagues at a meeting of the energy ministers of the G7 countries .

location

Location of North Sea East within the wind farms in the German Bight and their connection to the mainland

The Nordsee Ost wind farm is located around 30 kilometers northwest of the island of Helgoland and 35 kilometers west of the island of Amrum and covers an area of ​​35 km² with an average water depth of 25 meters.

Directly to the south is the offshore wind farm Meerwind , with which there is a common safety zone at a distance of 500 meters around the outer structures.

planning

Following an application dated July 16, 2000, the construction and operation of the wind farm with initially 80 wind turbines (WTs) with a nominal output of 4–5 MW each was approved by the Federal Maritime and Hydrographic Agency (BSH) on June 9, 2004 on the basis of the Marine Plant Ordinance . The original planning had changed in the meantime - instead 48 Senvion 6.2M126 wind turbines with a nominal output of 6.15 MW each were installed.

The project was initially developed by WINKRA Offshore Nordsee Planungs- und Betriebsgesellschaft mbH . After WINKRA was taken over by the Dutch Essent, Essent was integrated into the RWE Group in 2009. Innogy has owned the wind farm since then. The special purpose vehicle Windpark Nordsee Ost GmbH , based in Essen, was founded for operation (previously: Essent Wind Nordsee Ost Planungs- und Betriebsgesellschaft mbH).

The Siemens AG had the contract to build the Offshore - substation to the shipyard Nobiskrug given that the 14 meter high shell at the site Kiel built. Siemens itself equipped the steel shell with transformers and other electrical systems. According to the plans at the time, the completed platform, weighing around 2500  tons, was to be handed over to Essent Wind in May 2012 for shipping to the North Sea. The steel scaffolding foundation for the platform was in place at Hannoverkai in Wilhelmshaven from January 2013 .

The European Commission funded the project within the framework of the European Energy Program for Recovery (EEPR) with 50 million euros.

construction

Jacket foundation structures

In autumn 2011, a measuring mast was installed to collect data on wind, waves, air pressure and other data. After setting up a 500 m safety zone to secure the wind farm construction site on July 1, 2012, construction work on site could begin. The new installation ship of the Offshore Logistics Company - OLC " Victoria Mathias " began in summer 2012 with the erection of the jacket foundations and the subsequent installation of the wind turbines . The steel lattice structures for the foundation were completely manufactured in Norway, shipped on barges and in the The Bremerhaven container terminal serving as the base port is temporarily stored . Seven foundations had been set up on the construction site by mid-February 2013, the rest should follow by the end of 2013.

In July 2013, the steel framework foundation for the transformer platform was erected. At the beginning of August 2013, the park-internal cabling (33 kV submarine cables) of the 48 wind turbines with the transformer platform began. The time of the assembly of the turbines with the rotors also depended on the completion date of the power grid connection ( HVDC “HelWin 1” via the converter platform “HelWin alpha” built at the end of August 2013 ) for which TenneT TSO is responsible.

All foundations were set up in mid-March 2014, and in May 2014 the installation of the systems on them by the installation ship "Victoria Mathias" began. The rotor stars with the three more than 60-meter-long “wings” are not transported to the construction site pre-assembled, but are only assembled on site by the second installation ship “Friedrich Ernestine”. The first of 48 turbines was installed in June 2014. In June 2014, the laying of the submarine cables for the internal park cabling was completed. The transformer platform was installed from mid-July 2014 and then put into operation. For this purpose, the jack-up platform "JB 114" was set up right next to the transformer platform for around two months in order to provide accommodation for up to 40 technicians during this time.

Network connection

The connected converter platforms HelWin alpha and HelWin beta

The wind turbines are connected to a transformer platform in the wind farm via medium-voltage cables , which transforms the three-phase alternating current (three-phase current) from 33  kV to high voltage of 155 kV. From there, the electricity is fed via a submarine cable connection to the HelWin1 offshore HVDC system operated by the transmission system operator Tennet TSO . The offshore wind farm Meerwind is also connected to the HelWin alpha converter platform . After conversion into direct current, it is transmitted over 130 km (including 85 km of submarine cables and 45 km of underground cables ) to the converter station in the Büttel substation near Büttel (Elbe) .

The HelWin alpha converter platform was supplied by Siemens , installed at the end of August 2013 and completed in mid-2014. With the handover from Siemens to TenneT, the HVDC grid connection HelWin1 went into commercial operation in February 2015.

business

In December 2014, the first wind turbine fed electricity into the grid in test mode. On December 29, 2014, all 48 wind turbines were installed. The wind farm was fully commissioned in spring 2015. With the handover from Siemens to the electricity grid operator TenneT TSO , the HVDC grid connection "HelWin 1" went into commercial operation.

On June 19, 2015, a rotor blade broke. As a result, the entire wind farm was initially taken off the grid, but later put back into operation. The exact cause of the accident is still unclear.

RWE uses a site on Heligoland as a maintenance and service base.

As part of the swap between RWE , E.ON and innogy , all generation facilities, including the Nordsee Ost offshore wind farm, are to be transferred from innogy to RWE. This is planned for 2020.

From 2024, the electricity from four wind turbines (25 MW) will be supplied by RWE to DB Energie via an energy supply contract with a five-year term . The direct marketing of renewable energy between producers and purchasers accepts RWE Supply & Trading .

See also

Individual evidence

  1. ↑ Peter Kleinort: “Nordsee Ost” breaks 1000 GWh mark . In: Daily port report from May 18, 2016, p. 3
  2. ^ G7 energy ministers meeting in Hamburg. Press release. Federal Ministry for Economic Affairs and Energy, May 11, 2015, accessed on May 11, 2015 .
  3. ↑ Announcement of the BSH ( Memento of July 14, 2014 in the Internet Archive ) Cover sheet for nautical chart No. 103, in NfS 30/12 of July 20, 2012, BSH , Hamburg / Rostock 2012, ISSN  0027-7444
  4. ↑ Nordsee Ost approval notice. (PDF) Federal Maritime and Hydrographic Agency, June 9, 2004, accessed on September 10, 2019 .
  5. ↑ Nobiskrug builds offshore platform . In: Schiff & Hafen , issue 5/2011, p. 68, Seehafen-Verlag, Hamburg 2011, ISSN  0938-1643
  6. ↑ Foundation set on land . In: Daily port report from January 25, 2013, p. 3
  7. ^ European energy Program for Recovery. (PDF) European Commission , archived from the original ; accessed on May 23, 2020 .
  8. ↑ RWE Innogy builds wind measuring station in the North Sea (press release from RWE) , accessed on November 8, 2011
  9. ↑ Nachrichten für Seefahrer Issue 23/12 of June 8, 2012, pp. 4.2–4.5, BSH , Hamburg / Rostock 2012, ISSN  0027-7444
  10. ↑ RWE names Victoria Mathias (press release from RWE) , accessed on June 11, 2012
  11. ↑ Peter Kleinort: Cable laying started . In: Daily port report of August 7, 2013, p. 4
  12. ↑ North Sea converter platform successfully installed . In: Schiff & Hafen , issue 10/2013, p. 56
  13. ^ Anne-Katrin Wehrmann: Jack-Ups install the first foundations . In: Hansa , issue 3/2013, pp. 54/55
  14. ↑ Senvion sets up the first offshore turbines for "Nordsee Ost". Retrieved July 1, 2014 .
  15. ^ Frank Binder: RWE: Milestones in sea wind farms . In: Daily port report of July 2, 2014, p. 15
  16. ^ Michael Meyer: Temporary living platform in the North Sea . In: Daily port report from May 6, 2014, p. 4
  17. ↑ HelWin1 - grid connection for 128 offshore wind turbines off the coast of Heligoland. Tennet TSO , accessed January 12, 2020 .
  18. ↑ Factsheet: HelWin1 network connection. (PDF) Siemens, February 2015, accessed on May 23, 2020 .
  19. ^ Anne-Katrin Wehrmann: Jack-Ups install the first foundations . In: Hansa , issue 3/2013, pp. 54/55
  20. ↑ Siemens hands over the second North Sea grid connection to TenneT with HelWin1 , Siemens press release , February 9, 2015
  21. ^ First power from Nordsee Ost . In: Windpower Offshore , December 19, 2014, accessed December 19, 2014
  22. ↑ Siemens hands over the second North Sea grid connection to TenneT with HelWin1 , Siemens press release dated February 9, 2015
  23. ↑ Rotor blade breaks off in the offshore wind farm. In: The world . June 24, 2015, accessed June 24, 2015 .
  24. ↑ tagesschau.de: Brussels allows deal between RWE and Eon. Retrieved November 17, 2019 .
  25. ↑ RWE: Reporting on the first three quarters of 2019 for the RWE Group . Ed .: RWE Investor Relations. Essen November 14, 2019.
  26. ↑ E.ON: E.ON has transferred renewable energies to RWE. October 1, 2019, accessed January 13, 2020 .
  27. ↑ First contract for offshore wind power concluded in Germany. Retrieved September 10, 2019 .