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WO2018095649A1 - Pale pour une éolienne et agencement de liaison - Google Patents

Pale pour une éolienne et agencement de liaison Download PDF

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Publication number
WO2018095649A1
WO2018095649A1 PCT/EP2017/075925 EP2017075925W WO2018095649A1 WO 2018095649 A1 WO2018095649 A1 WO 2018095649A1 EP 2017075925 W EP2017075925 W EP 2017075925W WO 2018095649 A1 WO2018095649 A1 WO 2018095649A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductive layer
blade
connection terminal
blade according
pressure
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.)
Ceased
Application number
PCT/EP2017/075925
Other languages
English (en)
Inventor
Thomas Lehrmann Christiansen
Flemming Dahl
Yannick Cao van TRUONG
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2018095649A1 publication Critical patent/WO2018095649A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30—Lightning protection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/40—Ice detection; De-icing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • Blade for a wind turbine and connection arrangement The invention concerns a blade for a wind turbine, comprising a lightning protection system with a least one lightning receptor positioned on the surface of the blade and a least one down conductor for conducting a lightning current received by the receptor to a grounding terminal, wherein the blade com- prises at least one additional electrically conductive layer arranged between an outer surface of a blade shell of the blade and at least one outer coating layer.
  • the invention further concerns a connection arrangement. Wind turbines usually project out of the surrounding land ⁇ scape and are thus especially prone to lightning strikes. Thus, it is known to provide wind turbines, in particular their blades, with a lightning protection system.
  • Such a known lightning protection systems comprises at least one lightning receptor placed on the blades and a down conductor electrically connected to the blade, conducting a lightning current introduced into the receptor or the down conductor itself to the hub of the wind turbine and from there to ground.
  • Lightning currents are strong currents of up to 200 kA or more.
  • the down conductor is often guided along the inside of a blade shell and/or along a web of the blade.
  • the blade shell is usually covered by an outer coating layer, which may protect materials and optional lower layers from environmental influences like rain or other particles carried by the wind.
  • WO 2011/127997 Al it is proposed to arrange a heating mat, for example a carbon ply, on the surface of a blade shell such that it runs along the surface in one or more loops.
  • WO 2011/127995 Al discloses a method to mount a heating mat to the outer surface of the blade. It has also been proposed to embed the heating mat into a body of the blade in EP 2 754 891 Al .
  • a blade for a wind turbine com- prises a lightning protection system with a least one lightning receptor positioned on the surface of the blade and a least one down conductor for conducting a lightning current received by the receptor to a grounding terminal, wherein the blade comprises at least one additional electrically conduc- tive layer arranged on an outer surface of a blade shell of the blade, wherein the down conductor and the conductive layer are electrically connected by at least one connecting means such that their potential is equalized.
  • an outer coating layer i.e. a protective coating layer and/or a paint coating layer
  • the conductive layer is arranged be ⁇ tween the outer surface of the blade shell and the outer coating layer.
  • the invention thus proposes to use a special kind of perma ⁇ nent electrical connection means to conductively couple the conductive layer and the down connector at at least one posi ⁇ tion, preferably multiple positions along the conductive layer.
  • a conductive layer may be laminated to the outer surface of the blade shell and covered by at least one outer coating layer.
  • the down conductor may at least partly be guided on the inside of the blade shell and/or on a web of the blade, in particular at least partly embedded.
  • the con- ductive layer is preferably a carbon ply and/or a heating mat of a de-icing system and/or a sensor element of a surveillance sensor.
  • the connecting means comprises a flat connection terminal directly electrically connected to the conductive layer, the connection terminal extending underneath and/or above the conductive layer, but (in case an outer coating layer is provided) below the outer coating layer and being pressed against the conductive layer by a pressure means.
  • a flat connection terminal directly electrically connected to the conductive layer, the connection terminal extending underneath and/or above the conductive layer, but (in case an outer coating layer is provided) below the outer coating layer and being pressed against the conductive layer by a pressure means.
  • the lightning current should be spread out over an area before being introduced into the conductive layer.
  • a flat connection terminal for instance made of copper and/or having a thickness of 0.4 to 0.8 mm, is used, in par- ticular a strip having a width for example in the range of 2 to 10 cm.
  • the thickness of the flat connection terminal should be as low as possible, as this allows prevention of ply drop when laminat ⁇ ing the conductive layer onto the terminal.
  • connection terminals provided a better connec ⁇ tion, however, if the conductive layer is, for example, a heating mat of a de-icing system, it is to be taken into account that an area covered by the connection terminal cannot maintain its de-icing function.
  • connection terminal spans at least one exten ⁇ sion, in particular the width, of the conductive layer to establish a maximum contact area.
  • connection terminal spans a least one com- plete extent of the conductive layer, in particular a trans ⁇ verse extent in case of a band-like conductive layer, which is often the case if the conductive layer is a heating mat.
  • the second aspect concerns the contact pressure between the conductive layer and the connection terminal.
  • the pressure means comprises at least one outer coating layer and/or the conductive layer if at least one connection terminal is arranged below the conductive layer (that is, between the conductive layer and the blade shell) .
  • the pressure means consists solely of the outer coating layer, i.e. the connection terminal be- ing laminated to the blade shell and/or the conductive layer, in some embodiments this could suffice to provide a pressure resulting in a contact resistance suitable for lightning pro ⁇ tection systems, for example 1 mOhm or less.
  • the blade can be manufactured by applying pressure dur ⁇ ing lamination, for example by clamps, which are to be re ⁇ moved later on.
  • pressure dur ⁇ ing lamination for example by clamps, which are to be re ⁇ moved later on.
  • Using the protective layer and/or the conduc ⁇ tive layer as or as part of the pressure means ensures an equal and thus relatively evenly distributed contact pres- sure, since the connection terminal is at least essentially covered by the uniform pressure means.
  • a local additional outer coating layer is covering at least the connection terminal as a pres- sure means.
  • an additional coating layer can be added, for example by lamination.
  • the additional coating layer preferably extends below the outer outer coating layer and is, in a manufacturing process, applied before the outer outer coating layer.
  • the connecting means comprises at least one pressure exerting element as a pressure means, in particular arranged below the outer coating layer.
  • additional elements can be used and be integrated into the layer structure.
  • the connecting means may further comprise a pressure equalizing element arranged between the pressure exerting element and the connection terminal or the conductive layer, wherein in particular the pressure exerting element and the pressure equalizing element cover the whole area of the connection terminal.
  • An optimum contact pressure may, for example, be 0.8-1.2 bar (vacuum), in particular 1 bar (vacuum).
  • the pressure exerting element can be a bracket or at least one washer. Washers can be expedient any time that a more complex shape of the blade surface is to be matched. Using multiple pressure exerting elements, also the overall contact pressure can be reduced to more optimal val ⁇ ues .
  • the pressure exerting element can be fixed to the blade shell by fixing elements, in particular bolts.
  • the number and posi- tioning of the bolts can be chosen to result in an optimum pressure distribution and thus lowest contact resistance.
  • Bolts may be threaded to interact with a nut arranged on an opposite surface of the blade shell and/or a threaded recess in the blade shell or the connection terminal extending below the conductive layer.
  • the conductive layer can be "sandwiched" between two connection terminals, the bottom one having threads for the fixing elements.
  • the surface structure of the materials i.e. the structure of the conductive layer and of the connecting means, in particular the connection terminal. It has been found that the electrical resistance can be lowered by in ⁇ creasing the surface contact, but also be increasing the quality of the contact area by increasing the number of points where the connection terminal contacts and in particu ⁇ lar also at least partly penetrates the conductive layer, which preferably has a textile structure. Regarding such a textile structure, in particular a carbon ply, a woven struc- ture of the conductive layer has been found as optimal to lower contact resistance.
  • the contact resistance can be lowered by having a number of protrusions on its surface or "peaks", meshing into the spaces between fibres of the textile structure.
  • the con ⁇ ductive layer comprises fibres, in particular carbon fibres, arranged in a textile pattern.
  • the connection terminal may be of a grid or mesh structure itself or com ⁇ prise a grid or mesh between the conductive layer and a con ⁇ tinuous layer of the connection terminal.
  • the connection terminal may comprise a grid-like surface struc- ture such that the fibres lie in recesses of the surface structure. Using an open structure like a grid or a mesh is preferred since these structures, when pressure is applied, will penetrate the conductive layer easier than a flat sur ⁇ face .
  • At least two connecting means are arranged at different positions along the length of the conductive layer such that in case of a lightning current being introduced into the down conductor at least a part of the lightning current is carried by the conductive layer.
  • the conductive layer is a heating mat of a de-icing system for the blade.
  • De-icing systems are already well-known in the art, as has been intro- ductorily discussed.
  • the invention now allows to advanta ⁇ geously couple the de-icing system and the lightning protec ⁇ tion system, allowing to protect the heating mat from lightning damage on the one hand and use it as a secondary down conductor on the other hand.
  • measures preventing a short circuit for a heating current can be provided when having multiple connecting means along the length of the heating mat, as preferred.
  • the heating mat is powered by a power unit, wherein the heating mat and the down conductor are connected in series to form an electrical circuit for a heating current supplied by the power unit, and/or multiple connecting means are provided along the length of the heating mat, wherein at least one of the connecting means is con- nected to the down connector by a variable resistance device.
  • the variable resistance device can be any device that offers a closed connection only above a predetermined threshold cur ⁇ rent.
  • the variable resistance device can be a varistor or a spark gap.
  • Spark gaps can be used to allow high currents, in this case lightning currents, to pass, since an electrical arch is created over a gap, while lower currents, such as the heating current, are prevented from flowing to the down conductor and thereby short-circuiting the heating mat. If a series connection, as described, is used, at least one connection means at the end of the heating mat on the down conductor side can be provided without a spark gap.
  • the spark gap may be constructively located close to a lightning receptor, for example in a respective receptor module.
  • the invention also concerns a connection arrangement for intro ⁇ ducing a lightning current carried by a down conductor into an electrically conductive layer arranged on a substrate, characterized in that a connecting means for electrically connecting the down conductor and the conductive layer com- prises a flat connection terminal directly electrically con ⁇ nected to the conductive layer, the connection terminal ex ⁇ tending underneath and/or above the conductive layer and being pressed against the conductive layer by a pressure means. All embodiments concerning the connection terminal and pres- sure means described above can accordingly also be applied to the inventive connection arrangement.
  • Fig. 1 shows a blade for a wind turbine according to the invention
  • Fig. 2 shows the principal electrical layout of the em ⁇ bodiment of Fig. 1
  • Fig. 3 shows a first embodiment of a connection arrange ⁇ ment in a top view
  • Fig. 4 shows a second embodiment of a connection arrange ⁇ ment in a top view
  • Fig. 5 shows a third embodiment of a connection arrange ⁇ ment in a top view
  • Fig. 6 shows a first implementation of a layer structure in the first embodiment
  • Fig. 7 shows a second implementation of a layer structure in the first embodiment
  • Fig. 8 shows a third implementation of a layer structure in the first embodiment
  • Fig. 9 shows an implementation of a layer structure in the second or third embodiment.
  • Fig. 1 shows a principle drawing of a blade 1 for a wind tur ⁇ bine according to the current invention.
  • the blade comprises a blade root 2, where the blade 1 is fixed to a hub of the wind turbine.
  • the blade 1 further comprises a leading edge 3 and a trailing edge 4.
  • the blade main body 6, comprising a blade shell, is continued into a tip element 7.
  • the blade 1 has a de-icing system comprising a heating mat 8 at the leading edge 3 of the blade 1.
  • the heating mat 8 is connected to a power unit (not shown in Fig. 1) and consists of a carbon ply as conductive layer.
  • the carbon ply comprises carbon fibres in a woven textile structure and extends as a band-like structure over a length along the leading edge. It is laminated onto an outer surface of the blade shell and covered by an outer coating layer.
  • the blade 1 additionally comprises a lightning protection system (LPS) with multiple lightning receptors 9, electrically conductively coupled to a down conductor not shown in Fig. 1, which extends on the inside of the blade shell.
  • the tip element 7 may comprise a receptor block for the tip lightning receptors 9.
  • Fig. 2 illustrates the electrical layout of the blade 1, wherein also components in the hub 10 are shown.
  • the power unit powering the heating mat is partly located in the hub 10 and comprises a control unit 11 and a switch 12.
  • the heating mat 8 is connected in series to a down con ⁇ ductor 13 of the lightning protection system via connecting means 14.
  • Addi ⁇ tional connecting means 15 are provided along the length of the heating mat 8.
  • Another connecting means 16 is connecting the root side end of the heating mat 8 to the switch 12 as well as, using electrical arrangement 17, to the down conduc- tor 13.
  • All connecting means 14, 15, 16 comprise a flat connection terminal 18 extending transversely across the whole of the heating mat 8.
  • the connecting means 15 and 16 each comprise a spark gap 19.
  • the electrical arrangement 17 further comprises a poten ⁇ tiometer 17 for controlling the heating current through the heating mat 8.
  • the spark gaps 19 of the connecting means 15 are located close to lightning receptors 9, in particular on receptor blocks or in general in a receptor module.
  • the connecting means 14, 15 and 16 allow a controlled introduction of a part of the lightning current into the heating mat 8, which is thus cou- pled to the lightning protection system and acts as a secondary down conductor.
  • connection means 14, 15 and 16 are constructed to equal- ize potentials between the down conductor 13 and the heating mat 8 and to prevent damage due to lightning current intro ⁇ duction into the heating mat 8. In other words, they serve as a potential equalizing means for a controlled, damage-free equalization of the electrical potentials of the down conduc- tor 13 and the conductive layer in case of a lightning strike.
  • Exemplary connection arrangements are shown in Figs. 3 to 9, wherein all examples use the flat electrical connec ⁇ tion terminal 18 interposed between the blade shell and the heating mat 8 and/or between the heating mat 8 and the outer coating layer, while contact pressure is supplied by at least one pressure means.
  • Fig. 3 shows a first embodiment of a connection arrangement usable in the connecting means 14, 15 and 16 in a top view.
  • the heating mat 8 is laminated onto the blade shell 21.
  • Cop ⁇ per connection terminals 18 may extend below and/or above the heating mat 8, in particular the carbon ply. In this case, they are 0.6 mm thick.
  • the outer outer coating layer is not shown here.
  • Fig. 4 shows a second embodiment of a connection arrangement usable in the connecting means 14, 15 and 16 in a top view. Differing from the first embodiment, no additional outer coating layer 22 is used, but at least one pressure exerting element, in this case multiple washers 23. This facilitates applying an optimum contact pressure respecting the blade shape.
  • Bolts 24 are used as fixing elements.
  • brackets 25 are used as pressure exerting elements.
  • Figs. 6 to 9 show cross sectional views of resulting layer structures.
  • Figs. 6 to 8 are examples relating to the first embodiment of Fig. 3
  • Fig. 9 relates to the second or third embodiment, Figs. 4 and 5.
  • the outer outer coating layer 26 is shown additionally.
  • Both layers 22, 26 may be made from biaxial glass scrim with, e.g. 600 g/m 2 .
  • Fig. 6 only a lower connection terminal 18 is used, wherein contact pressure is provided by the heating mat 8 (carbon ply) , the additional outer coating layer 22 and the outer outer coating layer 26.
  • Fig. 7 only has an upper con- nection terminal 18;
  • Fig. 8 shows both upper and lower connection terminals 18.
  • Fig. 9 illustrates the further use of a pressure equalizing element 27 between the pressure exerting element (bracket 25 or washer 23) and the upper connection terminal 18.
  • the pres ⁇ sure equalizing element 27 is made from a foam material and facilitates an even distribution of the contact pressure.
  • the fixing element, bolt 24, is threaded at its lower part and interacts with a threaded recess in the lower connection ter- minal 18 or in the outer surface of the blade shell 21.
  • connection terminal 18 can preferably comprise a grid or mesh structure, either as a separate grid or mesh or as a surface structure on the surface contacting the heating mat 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne une pale pour une éolienne et agencement de liaison. La pale (1) comprend un système de protection contre la foudre avec au moins un récepteur de foudre (9) positionné sur la surface de la pale (1) et au moins une descente de paratonnerre (13) pour conduire un courant de foudre reçu par le récepteur de foudre (9) à une borne de mise à la terre. La pale (1) comprend au moins une couche conductrice supplémentaire disposée sur une surface extérieure d'une coque de pale (21) de la pale (1), la descente de paratonnerre (13) et la couche conductrice étant reliées électriquement par au moins un moyen de liaison (14, 15,16) de sorte que leur potentiel soit égalisé.
PCT/EP2017/075925 2016-11-28 2017-10-11 Pale pour une éolienne et agencement de liaison Ceased WO2018095649A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016223553.2 2016-11-28
DE102016223553 2016-11-28

Publications (1)

Publication Number Publication Date
WO2018095649A1 true WO2018095649A1 (fr) 2018-05-31

Family

ID=60191341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/075925 Ceased WO2018095649A1 (fr) 2016-11-28 2017-10-11 Pale pour une éolienne et agencement de liaison

Country Status (1)

Country Link
WO (1) WO2018095649A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110608140A (zh) * 2018-06-14 2019-12-24 西门子歌美飒可再生能源公司 阶梯式导电率界面
JP2019218863A (ja) * 2018-06-15 2019-12-26 三菱重工業株式会社 風車翼保護構造及びその形成方法
CN111237124A (zh) * 2020-02-19 2020-06-05 上海电气风电集团股份有限公司 一种集合风电叶片前缘防护和雷击防护的系统
US10844844B2 (en) * 2016-11-30 2020-11-24 DOOSAN Heavy Industries Construction Co., LTD Carbon blade for wind power generator with multi-down conductor
EP3792487A1 (fr) * 2019-09-16 2021-03-17 Siemens Gamesa Renewable Energy Innovation & Technology, S.L. Protection contre la foudre de pale d'éolienne comprenant des composants actifs
EP4027010A1 (fr) 2021-01-12 2022-07-13 Siemens Gamesa Renewable Energy Innovation & Technology S.L. Pale d'éolienne et procédé de fabrication d'une pale
CN114837879A (zh) * 2021-02-02 2022-08-02 西门子歌美飒可再生能源创新与技术有限公司 用于风力涡轮机的叶片
US20240309853A1 (en) * 2021-01-12 2024-09-19 Wicetec Oy A wind turbine blade comprising a potential control arrangement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226497A1 (fr) * 2009-03-06 2010-09-08 Lm Glasfiber A/S Pale d'éolienne dotée d'un système de protection d'éclairage
WO2011127995A1 (fr) 2010-04-12 2011-10-20 Siemens Aktiengesellschaft Fixation d'une garniture chauffante sur une pale d'éolienne
WO2011127997A1 (fr) 2010-04-12 2011-10-20 Siemens Aktiengesellschaft Garnitures chauffantes agencées en boucle sur une pale
EP2754891A1 (fr) 2013-01-14 2014-07-16 Siemens Aktiengesellschaft Système de dégivrage de pale de rotor d'éolienne
US20140348654A1 (en) * 2013-05-23 2014-11-27 Nordex Energy Gmbh Wind turbine rotor blade having an electrical heating device and a plurality of lightning conductors
US20160298608A1 (en) * 2013-10-17 2016-10-13 Vestas Wind Systems A/S Improvements relating to lightning protection systems for wind turbine blades

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226497A1 (fr) * 2009-03-06 2010-09-08 Lm Glasfiber A/S Pale d'éolienne dotée d'un système de protection d'éclairage
WO2011127995A1 (fr) 2010-04-12 2011-10-20 Siemens Aktiengesellschaft Fixation d'une garniture chauffante sur une pale d'éolienne
WO2011127997A1 (fr) 2010-04-12 2011-10-20 Siemens Aktiengesellschaft Garnitures chauffantes agencées en boucle sur une pale
EP2754891A1 (fr) 2013-01-14 2014-07-16 Siemens Aktiengesellschaft Système de dégivrage de pale de rotor d'éolienne
US20140348654A1 (en) * 2013-05-23 2014-11-27 Nordex Energy Gmbh Wind turbine rotor blade having an electrical heating device and a plurality of lightning conductors
US20160298608A1 (en) * 2013-10-17 2016-10-13 Vestas Wind Systems A/S Improvements relating to lightning protection systems for wind turbine blades

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10844844B2 (en) * 2016-11-30 2020-11-24 DOOSAN Heavy Industries Construction Co., LTD Carbon blade for wind power generator with multi-down conductor
CN110608140A (zh) * 2018-06-14 2019-12-24 西门子歌美飒可再生能源公司 阶梯式导电率界面
US11555482B2 (en) 2018-06-14 2023-01-17 Siemens Gamesa Renewable Energy A/S Stepped conductivity interface
JP2019218863A (ja) * 2018-06-15 2019-12-26 三菱重工業株式会社 風車翼保護構造及びその形成方法
US10900468B2 (en) 2018-06-15 2021-01-26 Mitsubishi Heavy Industries, Ltd. Wind turbine blade protection structure and method of forming the same
US11506181B2 (en) 2019-09-16 2022-11-22 Siemens Gamesa Renewable Energy Innovation & Technology S.L. Smart wind turbine blade with active components comprising a lightning protection system
EP3792487A1 (fr) * 2019-09-16 2021-03-17 Siemens Gamesa Renewable Energy Innovation & Technology, S.L. Protection contre la foudre de pale d'éolienne comprenant des composants actifs
CN111237124B (zh) * 2020-02-19 2021-11-05 上海电气风电集团股份有限公司 一种集合风电叶片前缘防护和雷击防护的系统
CN111237124A (zh) * 2020-02-19 2020-06-05 上海电气风电集团股份有限公司 一种集合风电叶片前缘防护和雷击防护的系统
EP4027010A1 (fr) 2021-01-12 2022-07-13 Siemens Gamesa Renewable Energy Innovation & Technology S.L. Pale d'éolienne et procédé de fabrication d'une pale
CN114763779A (zh) * 2021-01-12 2022-07-19 西门子歌美飒可再生能源创新与技术有限公司 用于风力涡轮机的叶片和用于制造叶片的方法
US11873798B2 (en) 2021-01-12 2024-01-16 Siemens Gamesa Renewable Energy Innovation & Technology S.L. Wind turbine blade having an ice formation prevention sytem and a lightning protection system and method for manufacturing the blade
US20240309853A1 (en) * 2021-01-12 2024-09-19 Wicetec Oy A wind turbine blade comprising a potential control arrangement
CN114837879A (zh) * 2021-02-02 2022-08-02 西门子歌美飒可再生能源创新与技术有限公司 用于风力涡轮机的叶片
EP4036402A1 (fr) 2021-02-02 2022-08-03 Siemens Gamesa Renewable Energy Innovation & Technology S.L. Pale d'éolienne
US20220243704A1 (en) * 2021-02-02 2022-08-04 Siemens Gamesa Renewable Energy Innovation &Technology S.L. Blade for a wind turbine
US11773828B2 (en) 2021-02-02 2023-10-03 Siemens Gamesa Renewable Energy Innovation And Technology S/L Wind turbine blade having an ice formation system and a lightning protection system
CN114837879B (zh) * 2021-02-02 2025-11-28 西门子歌美飒可再生能源创新与技术有限公司 用于风力涡轮机的叶片

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