EP3165680A1 - Verfahren zur installation einer windturbine zur aufrüstung eines bestehenden windparks und erhaltene windturbine - Google Patents

Verfahren zur installation einer windturbine zur aufrüstung eines bestehenden windparks und erhaltene windturbine Download PDF

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Publication number
EP3165680A1
EP3165680A1 EP14896550.2A EP14896550A EP3165680A1 EP 3165680 A1 EP3165680 A1 EP 3165680A1 EP 14896550 A EP14896550 A EP 14896550A EP 3165680 A1 EP3165680 A1 EP 3165680A1
Authority
EP
European Patent Office
Prior art keywords
foundation
wind
power generator
tower
driven power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14896550.2A
Other languages
English (en)
French (fr)
Other versions
EP3165680A4 (de
Inventor
César Abad Huber
Jorge Franco Rey
Javier Carpintero Grande
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GRI Renewable Industries SL
Original Assignee
GRI Renewable Industries SL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GRI Renewable Industries SL filed Critical GRI Renewable Industries SL
Publication of EP3165680A1 publication Critical patent/EP3165680A1/de
Publication of EP3165680A4 publication Critical patent/EP3165680A4/de
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts

Definitions

  • the present invention applies to the field of wind-driven power generators and of renewable energies, and more specifically to optimizing and improving wind energy output.
  • An object of the invention is to provide a method for executing a wind-driven power generator to upgrade an existing wind farm by means of replacing an existing wind-driven power generator with another wind-driven power generator, capable of generating a larger amount of energy and located at the same site as the wind-driven power generator it is replacing.
  • the invention allows making use of the coupling points of the different installations in the wind-driven power generator, as with the paths, platforms, and the existing civil engineering work in general.
  • Another object of the invention is to provide a method for executing which allows making use of the existing foundation for the purpose of saving weight and volume in concrete of the new foundation, completely or partially reusing the tower and/or some other parts of the wind-driven power generator and of the existing foundation to be part of the new structure.
  • a further object of the invention is to considerably reduce execution costs of wind-driven power generators, considerably improving terms for completion and start-up, while at the same time increasing productivity of existing farms.
  • Upgrading an existing farm is understood as replacing existing wind-driven power generators with others generating more wind energy by means of one, several or all of the aforementioned techniques.
  • Wind speed is fundamental in wind farm productivity because the generated wind energy potential is proportional to speed squared.
  • the swept area of the blades is also fundamental in wind farm productivity because the generated power is proportional to the square of the radius of the surface.
  • patent document ES 2388807 relates to a foundation to allow the anchoring of a wind turbine tower thereto by means of replaceable through bolts.
  • the patent relates to executing a new foundation with through bolts, but it does not allow upgrading wind farms or making use of an already executed foundation or reusing wind towers for said upgrade.
  • the present invention provides a method for executing wind-driven power generators to upgrade an existing wind farm that technically solves the execution of a new wind-driven power generator by making use of the foundation of the wind-driven power generator to be replaced, being able to reuse all or part of its shaft. The cost, terms for completion and environmental impact are thereby minimized.
  • the invention consists of a method for executing a wind-driven power generator to upgrade an existing wind farm formed by at least one wind-driven power generator comprising a first foundation, a tower arranged thereon and a turbine, provided with a plurality of blades, arranged at the upper end of said tower, wherein said method comprises the steps of:
  • the step of securing the first foundation to the second foundation comprises:
  • the step of securing the first foundation to the second foundation further comprises arranging a work platform on the attachment structure for operators to go into the tower.
  • the step of securing the first foundation to the second foundation comprises:
  • the step of providing anchoring elements in the second foundation comprises locating said anchoring elements radially around an axial axis defined by the center of the first foundation.
  • the anchoring elements of the second foundation will be metal bolts, post-tensioned chords and threaded rods.
  • the step of installing a turbine and blades and the rest of the tower on the first segment thereof to obtain a functional new wind-driven power generator comprises:
  • the step of installing a turbine and the blades and the rest of the tower on the first segment thereof to obtain a functional new wind-driven power generator comprises:
  • the step of installing a turbine and blades and the rest of the tower on the first segment thereof to obtain a functional new wind-driven power generator further comprises installing a transitional part between the first segment and the second segment of the tower.
  • the second foundation will be executed at the same level as the first foundation.
  • the invention likewise comprises the wind-driven power generator obtained according to the method described above.
  • the wind-driven power generator will comprise a foundation, a tower arranged thereon and a turbine, provided with a plurality of blades, arranged at the upper end of said tower, where the foundation will be formed by two foundations, a first previously existing foundation and a second circumscribed foundation in contact with and secured to the first foundation through securing means, where furthermore a first segment of the tower of the new wind-driven power generator will be anchored to the anchoring elements of the second foundation.
  • the second foundation is at the same level as the first foundation.
  • the anchoring elements of the second foundation will be selected from metal bolts, post-tensioned chords and threaded rods.
  • the foundation elements of the first foundation are metal bolts or metal ferrules.
  • the invention reduces installation costs by means of the location of the new tower in the same place as the one it is replacing, thereby making use of installations, installation connection points, work platforms and accesses.
  • the invention therefor solves the interference of the old foundation of the tower that has been taken apart with the new tower in a fast and cost-effective manner because demolition of the old tower and subsequent execution of a new one would make the upgrading process economically unfeasible.
  • the invention also provides for reusing part or all of the original metal shaft in the configuration of the new tower, reusing the turbine and the blades of the old wind-driven power generator, which would entail a further reduction in costs required for the upgrade.
  • the described invention relates to a method for executing a wind-driven power generator to upgrade an existing wind farm which will normally consist of metal towers measuring less than 60 m in height, which will be anchored to the initially existing foundation, or first foundation, by means of screwed attachments.
  • the first foundation with its embedded bolts or ferrules.
  • the first foundation will usually have a square layout, measuring from 8 to 12 m sideways and 2 m edgewise and will have two basic configurations: an inverted T-shaped configuration and another rectangular configuration. In any case, the weight of these foundations is very high, ranging between 300 MT and 700 MT.
  • the new wind-driven power generator to be installed will generate a power that is clearly superior to that which is replaced and will transmit very significant stresses to the ground that must be transmitted through a foundation having a very large, and therefore a very heavy weight, particularly to prevent the tower from overturning, requiring in the order of 1000 MT to 1300 MT.
  • the method will allow making use of first existing foundation as a ballast or weight that is complementary to that of the new or second foundation, acting integrally with the latter will allow reducing the amount of steel and concrete to be used in the foundation required for the new wind-driven power generator.
  • the invention thereby allows reducing the cost of the foundation of the new wind-driven power generator by about 50%.
  • the following step would be to execute a second circumscribed foundation, which may or may not be concentric, in contact with the existing foundation, possibly having a circular or polygonal outer perimeter. Both foundations will preferably have the same level.
  • Said securing means can preferably be an attachment structure or through the anchoring of, preferably, pins or metal reinforcements, in a plurality of perforations made along the outer perimeter of the first foundation.
  • Anchoring elements would be provided in this second foundation.
  • Metal bolts, post-tensioned chords or threaded rods would preferably be incorporated radially around an axial axis defined by the center of the first foundation for anchoring the first segment of the tower of the new wind-driven power generator.
  • other metal anchorings will be incorporated for screwing the attachment structure of both foundations therein.
  • the attachment structure will preferably be provided with a substantially circular central body with perforations around its outer edge to allow the anchoring of the foundation elements kept from the first foundation, and in turn provided with radial prolongations with respect to the central body with perforations at the ends of said prolongations to allow the anchoring of additional anchoring elements, which will preferably be made of metal.
  • both foundations are secured by means of the anchoring of, preferably, pins or metal reinforcements, in a plurality of perforations made along the outer perimeter of the first foundation, said pins or metal reinforcements will overlap with the second foundation, making both foundations work integrally with one another.
  • the new tower is executed, which can be made entirely of reinforced concrete (with passive and/or active reinforcements) or a hybrid, formed by a first segment of concrete, a transitional part between the first segment and the second segment, made of metal or concrete, and a final metal segment.
  • the new tower whether it is made entirely of concrete, or has a first segment of the hybrid tower, may be made of prefabricated concrete.
  • the metal tower that was taken apart at the beginning of the process can be reused, either partially or entirely, for the configuration of the final metal segment of the new hybrid tower.
  • the first segment of the tower of the new wind-driven power generator is anchored to the anchoring elements provided in the second foundation, preferably metal bolts, post-tensioned chords or threaded rods radially arranged in the second foundation.
  • the turbine and blades of the new wind-driven power generator are installed to obtain a functional new wind-driven power generator.
  • the existing turbine may, or may not, be used by replacing the blades with other blades having a larger mayor diameter.
  • the present invention relates to a method for executing a wind-driven power generator to upgrade an existing wind farm and the wind-driven power generator thus obtained.
  • Figure 1 shows the result of the first step of the method in which the turbine, blades and the tower of the wind-driven power generator have been taken apart to be replaced and the first foundation 1 and the foundation elements 6 embedded therein have been kept. These foundation elements 6 will preferably be metal bolts or metal ferrules.
  • the first foundation 1 is a typical inverted T-shaped foundation of a wind-driven power generator.
  • first foundation 1 with its foundation elements 6.
  • These foundations 1 usually have two basic configurations; one with an inverted T-shaped section and another with a rectangular section.
  • Anchoring elements 3 preferably metal bolts, post-tensioned chords or threaded rods, are radially incorporated to this second foundation 2 for anchoring the new tower.
  • a plurality of additional anchoring elements 4 are provided in the second foundation 2. This embodiment can be seen in Figures 2 and 3 , which show, respectively, a section and a plan view of such embodiment.
  • Figure 4 shows a perspective view of the attachment structure 5 of the two foundations 1, 2.
  • said attachment structure 5 can be provided with a circular central body with perforations around its outer edge to allow the anchoring of the foundation elements 6 kept from the first foundation 1, and in turn provided with radial prolongations with respect to the central body with perforations at the ends of said prolongations to allow the anchoring of additional anchoring elements 4, which will preferably be made of metal.
  • Figure 5 shows a section of the resulting foundation secured by means of the attachment structure 5 shown in Figure 4 and Figure 6 in a perspective plan view.
  • Figure 7 shows the securing of both foundations 1, 2 by means of the anchoring of pins or metal reinforcements 8 which will overlap with the second foundation 2, making both foundations work integrally with one another.
  • the anchoring elements 3 provided in the second foundation 2 and the foundation elements 6 kept in the first foundation 1 are seen in this embodiment.
  • Figure 8 shows part of a wind-driven power generator with a tower formed by a first segment 9 anchored to the anchoring elements 3 provided in the second foundation 2, a transitional part 10 and the second segment 11 of the tower.
  • the first segment 9 will be made of concrete, the transitional part 10, made of concrete or steel, and the second segment 11 made of metal.
  • the metal tower that was taken apart at the beginning of the process can be reused, either partially or entirely, for the configuration of the second segment 11 of the new hybrid tower.
  • the first segment 9 of the new tower is anchored to the anchoring elements 3 provided in the second foundation 2.
  • Figure shows a work platform 7 arranged on the attachment structure for operators to go into the tower.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)
EP14896550.2A 2014-07-03 2014-07-03 Verfahren zur installation einer windturbine zur aufrüstung eines bestehenden windparks und erhaltene windturbine Withdrawn EP3165680A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2014/070542 WO2016001455A1 (es) 2014-07-03 2014-07-03 Procedimiento de ejecución de un aerogenerador para repotenciar un parque eólico existente y aerogenerador obtenido

Publications (2)

Publication Number Publication Date
EP3165680A1 true EP3165680A1 (de) 2017-05-10
EP3165680A4 EP3165680A4 (de) 2018-04-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14896550.2A Withdrawn EP3165680A4 (de) 2014-07-03 2014-07-03 Verfahren zur installation einer windturbine zur aufrüstung eines bestehenden windparks und erhaltene windturbine

Country Status (2)

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EP (1) EP3165680A4 (de)
WO (1) WO2016001455A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11415106B2 (en) 2018-02-07 2022-08-16 Vestas Wind Systems A/S Retrofitted wind turbine installation and a method of retrofitting a wind turbine installation with a replacement wind turbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110582638B (zh) 2017-04-06 2020-11-03 维斯塔斯风力系统有限公司 用能量生成单元改造风力涡轮机的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020056250A1 (en) * 2000-04-24 2002-05-16 Cash David W. Method and apparatus for increasing the capacity and stability of a single-pole tower
US6453636B1 (en) * 2000-04-24 2002-09-24 Charles D. Ritz Method and apparatus for increasing the capacity and stability of a single-pole tower
FR2910038B1 (fr) * 2006-12-18 2009-03-06 Transel Etude De Construction Procede de remplacement d'un poteau et installation comprenant un poteau
US8734705B2 (en) * 2008-06-13 2014-05-27 Tindall Corporation Method for fabrication of structures used in construction of tower base supports
DE202010007750U1 (de) * 2010-06-09 2010-08-19 Hce Ingenieursgesellschaft Mbh Ertüchtigtes Fundament
ES2493722B1 (es) * 2013-03-12 2015-07-20 Iconkrete 2012, S.L. Procedimiento de ejecución de un aerogenerador para repotenciar un parque eólico existente y aerogenerador obtenido

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11415106B2 (en) 2018-02-07 2022-08-16 Vestas Wind Systems A/S Retrofitted wind turbine installation and a method of retrofitting a wind turbine installation with a replacement wind turbine

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Publication number Publication date
WO2016001455A1 (es) 2016-01-07
EP3165680A4 (de) 2018-04-11

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