Couplage de ce que j' appellerai du micro-STEP avec un parc de 4 éoliennes.
Ça va se faire en Allemagne, avec General Electric comme industriel.
L'eau sera turbinée 180 m plus bas dans une vallée (600 feet).
Les réservoirs d'eau en hauteurs seront au pied de chaque éolienne à raison d environ 38 000 m3 d'eau (10.6 millions de Gallons).
Devrait être opérationnel fin 2018
This Unique Combo Of Wind And Hydro Power Could Revolutionize Renewable Energy
Oct 16, 2016 by Tobey Grumet
Wind is a clean, cheap source of renewable energy, but it’s also fickle. You can never be sure whether the wind will blow. But engineers in Europe have now found a way to crack this shortcoming by combining it with hydropower. The big idea here is that the wind will generate electricity when it’s, well, windy, and the water will act as a giant battery that will discharge and modulate output when it stops blowing.
The German firm Max Boegl Wind AG approached GE Renewable Energy to collaborate on the first wind farm with an integrated hydropower plant in March. The four-turbine pilot project will be connected to the grid by the end of 2017, and the hydropower plant should be operational by the end of 2018.
These won’t be ordinary wind turbines. They will be the world’s tallest, standing 584 feet high when the blade is pointing straight up. The base of the turbines—the bottom 131 feet—will double as a water reservoir holding 1.6 million gallons of water, and the whole turbine will sit in another reservoir holding an additional 9 million gallons.
The setup essentially works as a hydro pump station (see image above). When electricity is needed, water flowing downhill from the reservoirs will power the hydro plant. When the energy supply is high, the hydro plant will pump the water back up the hill to the reservoirs and will act as the giant battery. The hydro plant will benefit from this arbitrage, making power when the price is high and using power when the price is low, while complementing the wind farm. The combination of the two power sources (which will work in parallel to each other) will ensure that electricity is always flowing from the plant.
For it to work, the wind turbines must sit at the top of a hill, and there must be room in the valley for a man-made lake — in this case 600 feet below the wind farm—that will store the water when it’s not being used by the turbines.
The Swabian-Franconian Forest, in Germany, proved the perfect location. Built into the hills will be a hydroelectric plant capable of producing 16 megawatts of power, while the wind farm on its own will produce 13.6 megawatts.
The team behind the farms says the innovative design provides a very fast increase in output, allowing the hydro plant to react immediately to fluctuations in the German energy market. “Germans in this area are known as tinkerers and inventors,” says Cliff Harris, general manager for onshore wind in EMEA at GE Renewable Energy. “So the mentality of this technology really fits with the population.”
http://www.gereports.com/unique-combo-w ... le-energy/
il y a des illustrations interessantes dans le lien mais trop grandes pour entrer ici.
voir aussi http://www.evwind.es/2016/11/03/germany ... ines/57807