Wind farm and method for installing a wind farm

Abstract

It comprises a number of wind turbines having a modular jacket formed of at least an upper substructure, an intermediate substructure, and a lower substructure that are connectable to each other. At least the intermediate substructure in a wind turbine foundation is different in height (h) from at least one substructure in another wind turbine foundation in order to adapt the different wind turbines of the wind farm to a site having differences in depth (ΔH) where the wind turbines of the wind farm are installed of the order of about 20 to 60 m.

1 . A wind farm comprising:
 at least two wind turbines, each wind turbine including a foundation provided with a modular jacket, the modular jacket comprising a number of substructures connectable to each other,   wherein at least one substructure of one foundation is different in height (h) from at least one substructure of the other foundation in order to adapt the wind turbines of the wind farm to a site having differences in depth (ΔH) where the wind turbines of the wind farm are to be installed.   
     
     
         2 . The wind farm ( 500 ) of  claim 1 , wherein the modular jacket comprises at least an upper substructure, an intermediate substructure, and a lower substructure, the substructures being connectable to each other, and wherein at least the intermediate substructure in the one wind turbine foundation is different in height (h) from at least the intermediate substructure in the other wind turbine foundation in order to adapt the different wind turbines of the wind farm to the site having differences in depth (ΔH) where the wind turbines of the wind farm are installed. 
     
     
         3 . The wind farm of  claim 2 , wherein the upper substructure and lower substructure of the one foundation is at least similar in height (h) to the respective upper substructure and lower substructure of the other foundation. 
     
     
         4 . The wind farm of  claim 2 , wherein the lower substructure comprises a foot unit including a number of pins that are adapted for receiving at least one portion of a length of corresponding piles suitable for being inserted into a surface of the site. 
     
     
         5 . The wind farm of  claim 4 , wherein a grouting chamber is defined between the pins and the piles for receiving grout in order to establish a grouted connection. 
     
     
         6 . The wind farm of  claim 1 , wherein the modular jacket includes grouted connections for connecting the substructures to each other. 
     
     
         7 . The-wind farm of  claim 1 , wherein the at least one substructure of the one foundation that is different in height (h) from the at least one substructure in the other foundation is such that the at least two wind turbines in the wind farm can be adapted to the site where differences in depth (ΔH) range from about 20 to 60 m. 
     
     
         8 . The wind farm of  claim 2 , wherein the upper substructure of the modular jacket has at least one inclined portion. 
     
     
         9 . The wind farm of  claim 2 , wherein the intermediate substructure of the modular jacket is substantially vertical. 
     
     
         10 . The wind farm of  claim 2 , wherein the lower substructure of the modular jacket has at least one inclined portion. 
     
     
         11 . A method for installing a wind farm, the wind farm comprising at least two wind turbines to be installed in a site surface, each of which including a foundation provided with a modular jacket including at least an upper substructure, an intermediate substructure, and a lower substructure, at least the intermediate substructure in one foundation being different in height (h) from at least the intermediate substructure in the other foundation in order to adapt the different wind turbines to a site having differences in depth (ΔH) where the wind turbines are installed, the method comprising, for each wind turbine:
 providing the lower substructure; 
 fitting piles into the site surface; 
 attaching the piles to the lower substructure; 
 attaching the intermediate substructure to the lower substructure; and 
 attaching the upper substructure to the intermediate substructure. 
 
     
     
         12 . The method of  claim 11 , wherein at least one attachment of the intermediate substructure to the lower substructure and the upper substructure to the intermediate substructure is a grouting attachment.