Gemini offshore wind farm
| Gemini wind farms | |||
|---|---|---|---|
| location | |||
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| Coordinates | 54 ° 2 '10 " N , 5 ° 57' 47" E | ||
| country | Netherlands | ||
| Waters | North Sea | ||
| Data | |||
| Type | Offshore wind farm | ||
| Primary energy | Wind energy | ||
| power | 600 MW (total) | ||
| owner | 60% Northland Power 20% Siemens 10% HVC 10% Alte Leipziger - Hallesche |
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| operator | Northland Power | ||
| Start of operations | April 2017 (partial areas BuitenGaats and ZeeEnergie) | ||
| founding | Monopile | ||
| turbine | BuitenGaats: 75 × Siemens SWT 4.0-130 ZeeEnergie: 75 × Siemens SWT 4.0-130 |
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| Website | http://geminiwindfarm.com/ | ||
| was standing | April 2017 | ||
Gemini is the name of a cluster of offshore wind farms (OWF) in the Dutch exclusive economic zone in the southern North Sea . The first two - since April 2017 - in operation OWPs with the names ZeeEnergie and Buitengaats each have 75 wind turbines of the type Siemens SWT-4.0-130 .
For the Gemini wind farms together, a standard energy capacity of 2.6 billion kWh of electrical energy per year is expected, which corresponds to the electricity consumption of approx. 785,000 households. With a total output of 600 MW , it will be one of the largest offshore wind farms in the world.
The owner is a consortium of several companies led by the Canadian company Northland Power , which holds 60% of the shares and is also responsible for its operation.
location
Gemini extends over a total area of 68 km² and is located about 85 kilometers north of the coast of the province of Groningen in the east of the Dutch exclusive economic zone in the North Sea. The average wind speed here is 36 km / h or 10 m / s, which makes the location one of the windiest off the Dutch coast. The water depths are between 28 and 36 meters.
technology
75 wind turbines are used in each of the two sub-areas BuitenGaats and ZeeEnergie . These 150 Siemens Wind Power turbines are of the type SWT 4.0-130 with a nominal output of 4 MW, a rotor diameter of 130 meters and a hub height of 88.5 meters, the total height of the turbines up to the rotor tip is around 154 meters. Monopiles are used as foundations , which, depending on the location of the respective turbine, have a length of 59 to 73 meters. In addition to the construction of the wind turbine, the installation and commissioning were also carried out by Siemens. In addition, Siemens is the first plant for 15 years waiting .
For the innerpark cabling, submarine cables with a voltage of 33 kV are used. The voltage is transformed to 220 kV on one transformer platform each , which rests on jacket foundations , with which the two export cables to the land in Eemshaven are operated. Each of these cables, which have an aluminum core instead of copper , is around 120 km long and designed for a maximum transmission capacity of 75% of the total output of the wind farm in order to keep the curtailment of systems low even if one cable fails. With the export cables, the collected energy is conducted to the substation in Eemshaven, where it is fed into the public 380 kV transmission network.
Construction progress
Construction work began in July 2015 on the “ZeeEnergie” and “Buitengaats” sub-areas with the installation of the first foundation. The last foundation was installed in October 2015. The installation of the wind turbines then began. The systems were installed by various installation vessels and cable layers , including the Aeolus , which went into operation in 2014 . At the end of February 2016, the first turbine fed electrical energy into the grid. The last wind turbine in the area was installed at the end of August 2016. The last turbine was commissioned in October 2016, and the wind farm was fully commissioned in April 2017. The construction costs were initially estimated at 2.8 billion euros, but ultimately remained below this value.
business
Northland Power uses a site in Eemshaven as a maintenance and service base.
See also
- List of offshore wind farms
- List of offshore wind farms in the Netherlands
- List of power plants in the Netherlands
Web links
Individual evidence
- ^ Gemini Wind Power Project, Netherlands . Power-Technology, accessed on August 11, 2015
- ^ Gemini substations en route . In: Windpower Offshore , August 17, 2015, accessed on August 17, 2015
- ^ Gemini: First Foundation Installed . In: www.offshorewind.biz , July 2, 2015, accessed on August 11, 2015
- ^ Gemini foundations installed ahead of schedule . In: Windpower Offshore , October 19, 2015, accessed on October 19, 2015
- ↑ Gemini delivers first power . In: Renews , February 29, 2016, accessed February 29, 2016
- ^ Last Gemini Turbine Up . In: Offshorewind.biz , August 24, 2016, accessed on August 24, 2016
- ^ Gemini Delivers Early . In: Offshorewind.biz , April 28, 2017, accessed April 28, 2017