Merkur offshore wind farm
| "Merkur Offshore" offshore wind farm | |||
|---|---|---|---|
| location | |||
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| Coordinates | 54 ° 2 ′ 0 ″ N , 6 ° 33 ′ 0 ″ E | ||
| country | Germany | ||
| Waters | North Sea | ||
| Data | |||
| Type | Offshore wind farm | ||
| Primary energy | Wind energy | ||
| power | 396 MW (electric) | ||
| owner | The Renewable Infrastructure Group Ltd. APG |
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| operator | Merkur Offshore GmbH, Hamburg | ||
| Project start | 2006 | ||
| Start of operations | June 15, 2019 | ||
| founding | Monopile | ||
| turbine | 66 × GE Wind Energy Haliade 150-6MW (6.0 MW, 150 m) |
||
| Energy fed in per year | 1750 GWh | ||
| Website | Mercury offshore | ||
| was standing | 2019 | ||
Merkur Offshore , formerly MEG 1 , is an offshore wind farm in the German exclusive economic zone of the North Sea . The wind farm consists of 66 wind turbines of the type GE Wind Energy Haliade 150-6MW. The standard energy capacity of the wind farm, which went into operation in 2019, is around 1750 GWh per year .
location
The wind farm is located in the North Sea within the German exclusive economic zone . It is located around 45 kilometers north of the island of Borkum and covers an area of around 47 km² with water depths of around 27–33 meters.
history
Following the application by Multibrid Entwicklungsgesellschaft mbH on April 10, 2006, the Federal Maritime and Hydrographic Agency (BSH) approved the construction and operation of 80 wind turbines on August 31, 2009 . On April 13, 2011, the BSH issued the first approval to Nordsee Offshore MEG I GmbH in accordance with the BSH standard "Constructive design of wind turbines". The wind farm was planned by Windreich and DEME as well as Alstom (now General Electric ).
The project financing began with Nordsee Offshore MEG 1 GmbH and DEME Concessions and was concluded as a financial close with the establishment of Merkur Offshore GmbH as a joint venture between Partners Group, InfraRed Capital Partners, DEME Concessions and Coriolis. Financing was secured in August 2016. The consortium of capital providers includes General Electric, DEME , Partners Group , InfraRed Capital Partners and the French organization ADEME .
Due to the insolvency of Windreich, the development process stalled and at the request of the permit holder, the BSH extended the provision for the latest construction start to July 1, 2016 and later to August 1, 2017.
During the development phase, various design adjustments were made to the foundation structures ( monopile - jacket - monopile) and the number and size of the turbines. Finally, 66 turbines for 6 MW each were placed on monopile foundations.
At the beginning of June 2018, the first electricity was produced in the wind farm and was partially put into operation. The construction of the systems was completed at the end of September 2018. The Mercury Offshore GmbH was awarded the project certificate from the certification authority in the autumn of 2019 Hanseatic Power Cert GmbH , which is necessary for applying for the single release.
Shareholders
The following shareholders were involved in Merkur Offshore GmbH at the time of the investment decision:
| proportion of | Shareholders |
|---|---|
| 50% | Partners Group Merkur Holding |
| 25% | InfraRed Capital Partners |
| 12.5% | DEME Concessions Mercury |
| 12.5% | Coriolis FOAK (ADEME and GE Energy Financial Services) |
In December 2019 it was announced that 100% of the shares in Merkur Offshore GmbH would be sold to a consortium made up of The Renewable Infrastructure Group Limited (TRIG) and the pension investor APG. TRIG is listed on the London Stock Exchange -run investment company . APG is the largest pension company in the Netherlands.
technology
Foundation structures
66 monopiles with diameters of up to 8 meters, lengths of up to 73 meters and a total weight of approx. 970 t are used. The connection to the transition piece is made via a screwed flange . Each monopile consists of three sections:
- 1. lower cylindrical section
- 2. middle conical section
- 3. upper cylindrical section
The length of the lower cylindrical section varies depending on water depths and different geotechnical boundary conditions at the individual locations.
The upper cylindrical section has a constant outer diameter of 6.0 m. The conical section has an outer diameter of 6.0 m at the top and rises to 7.6 m or 7.8 m at the bottom. The lower section has a diameter of 7.6 m or 7.8 m, depending on the location.
| length | 58.5 m - 72.6 m |
| Embedment depth | 25 m - 35.4 m |
| Lower diameter | 7.6 m - 7.8 m |
| Upper diameter | 6.0 m |
| Weight | 703 t - 970 t |
Wind turbines
Merkur Offshore will be equipped with 66 wind turbines of the type " GE Wind Energy Haliade 150-6MW" with a nominal output of 6 MW each and a rotor diameter of 150 meters; the hub height is 102 meters. It is designed for wind class IB , i.e. H. for offshore locations with a reference wind speed of 50 m / s (10-minute average) and a 50-year extreme gust speed of 70 m / s (3-second average).
The Haliade 150-6MW is a 3-blade wind-up system, which is equipped with a directly driven permanent magnet generator and three identical full converters. The converters and transformers are located on the tower floor and in the low-voltage switch cabinet. A distributor cabinet is placed in the nacelle to supply the cooling fans as well as the pitch and yaw control. In order to protect the built-in components from corrosion and high temperatures, the indoor air quality of the nacelle is kept constant by an air conditioning system and the most important components are cooled by heat exchangers .
The 66 turbines were manufactured by GE in Saint-Nazaire . The 198 rotor blades with a length of 73.5 m each were produced by LM Wind Power in Castellón .
Inner-park wiring
The inner park cabling for connecting the individual wind turbines to the transformer platform is done in a redundant loop configuration . The 66 systems are distributed over 12 strings with 5–6 systems each. Two strings are connected to a loop via a bridge cable. The cables were laid with a special cable laying ship .
Substation
The contract to build the transformer platform (OSS) was awarded by GeoSea to the joint venture consisting of Cofely Fabricom, Iemants and Tractebel Engineering. The OSS converts the voltage from 33 kV to 155 kV and forms the transfer point for the energy produced to the network operator Tennet . The topside was installed on the jacket foundation. It is operated fully automatically and unmanned. For service and maintenance work, quick access by helicopter is made possible via a helipad .
Technical specifications:
- Jacket:
- 4-leg jacket with a span of 24 × 24 m (top) and 39 × 39 m (bottom)
- 12 J-tubes for the inner park cables
- 2 J-Tubes for the export cables
- 2 boat landings
- Pull the rigging platform towards the cable
- Topside:
- Nominal output 396 MW
- Power transformers 155/33/33 kV - 220/300 MVA
- Auxiliary and emergency power supply: 2 diesel generators each 1,250 kVA, installed at WTGs in the event of a power failure for up to 21 days without refueling, 150,000 l diesel fuel
- Emergency power supply: 200 kVA to operate all safety systems ( crane , lights, rescue systems, automation)
- three decks (mostly closed and ventilated by an AC system)
- Helipad
- Top deck crane:
- SWL: 8t
- 22 m range (SWH, 1.5 m)
- certified for man riding
- OSS unmanned
- Accommodation available for up to 12 people
- Weight: approx. 1400 tons
Network connection
The electrical energy generated in the individual wind turbines is conducted to the transformer platform in the wind farm via AC medium-voltage cables (inner park cabling, 33 kV) . The network connection to the HVDC converter platform "DolWin gamma" is made from here . The neighboring offshore wind farm Borkum Riffgrund 2 is also connected there. The Norddeutsche Seekabelwerke were commissioned to set up this AC connection . DolWin gamma is part of the “ DolWin 3 ” HVDC system , which transports the electricity to the HVDC converter station in the Dörpen / West substation near Heede (Emsland) . The transmission network operator TenneT TSO is responsible for the HVDC transmission . The official network connection date was August 23, 2017.
Construction phase
The components were shipped centrally from the Orange Blue Terminal in Eemshaven in the Netherlands to their destination in the North Sea. Construction of the wind farm began in April 2017 with the installation of the first monopile foundations. The installation ship Innovation was used for this. From November 2017 the Challenger was used by A2SEA to equip the monopiles with transition elements that accommodate the actual system towers. The last loading of the elements intended for construction took place at the end of September 2018.
business
The system supplier General Electric uses a site in Eemshaven as a maintenance and service base to fulfill the long-term service contract .
See also
Web links
Individual evidence
- ↑ Alstom Haliade set for Merkur Offshore - updated. Retrieved August 1, 2017 .
- ↑ a b Financing for Merkur offshore wind farm project confirmed . In: Sonne Wind & Wärme , August 12, 2016, accessed on August 12, 2016.
- ↑ 4C Offshore. Retrieved August 1, 2017 .
- ↑ Federal Maritime and Hydrographic Agency : Merkur Offshore Approval Notice. (PDF) Retrieved September 2, 2019 .
- ↑ Merkur produces first electricity. In: offshorewind.biz. June 4, 2018, accessed June 4, 2018 .
- ↑ GE Renewable Energy: Merkur Offshore Wind Farm in Germany: 66 Haliade 150-6MW Installation Complete! on YouTube , October 4, 2018, accessed September 25, 2019.
- ↑ "Merkur" offshore wind project successfully completed . In: Schiff & Hafen , issue 11/2018, p. 39
- ↑ "Merkur Offshore" wind farm receives project certificate . In: Schiff & Hafen , issue 10/2019, p. 41
- ↑ a b c d e Merkur Offshore - Offshore wind energy to power the world. Retrieved August 1, 2017 .
- ↑ TRIG, APG to buy 396 MW offshore wind farm Mercury. Accessed December 24, 2019 .
- ↑ Paradigm shift: GE's French wind turbine plant will drive the energy transition in Germany. August 23, 2017. Retrieved November 28, 2017 .
- ↑ LM delivers Merkur giant. In: reNEWS - Renewable Energy News. November 2, 2017. Retrieved November 10, 2017 .
- ↑ DeepOcean dives into Merkur. In: reNEWS - Renewable Energy News. June 28, 2017. Retrieved November 10, 2017 .
- ↑ DolWin3 - TenneT. Retrieved August 1, 2017 .
- ↑ Merkur crosses starting line. In: reNEWS - Renewable Energy News. April 20, 2017. Retrieved November 10, 2017 .
- ↑ A2Sea preps for Mercury. In: reNEWS - Renewable Energy News. November 1, 2017. Retrieved November 10, 2017 .
- ↑ "Merkur" offshore wind project successfully completed . In: Schiff & Hafen , issue 11/2018, p. 39
- ↑ Expansion in Eemshaven . In: Hansa , issue 5/2018, p. 87