EP2220368A2 - Vorrichtung zum ableiten eines blitzes bei einer windenergieanlage - Google Patents
Vorrichtung zum ableiten eines blitzes bei einer windenergieanlageInfo
- Publication number
- EP2220368A2 EP2220368A2 EP08845664A EP08845664A EP2220368A2 EP 2220368 A2 EP2220368 A2 EP 2220368A2 EP 08845664 A EP08845664 A EP 08845664A EP 08845664 A EP08845664 A EP 08845664A EP 2220368 A2 EP2220368 A2 EP 2220368A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tower
- lightning
- slip ring
- designed
- hub
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/64—Devices for uninterrupted current collection
-
- 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
-
- 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
- the invention discloses an apparatus for dissipating a lightning in a wind turbine, the wind turbine comprising at least one rotor blade coupled to a hub, a slow shaft coupled to the hub substantially non-rotatably, a bearing supporting the shaft rotatably supported relative to a main frame, wherein the main frame receives at least a means for converting mechanical energy and having a tower, wherein the tower is conductively connected to the ground, the rotor blade having means for initiating the flash and means for directing the flash the means for directing the flash are designed in conductive contact with a conductive transmission unit, wherein the transmission unit is formed as a sliding contact having a slip ring and a brush and is conductively connected to the tower.
- Modern wind turbines can have tower heights of 140m and rotor blade diameter of 120m. This leads, in particular in thunderstorm weather conditions, to the fact that flashes or electrostatic discharges discharge via the wind energy installations. The current of the lightning is conducted through or via the wind turbine into the ground. [03] Such a flow of current can not only destroy electrical components, but also affect mechanical parts. In particular, bearings can be affected by current flow in their lifetime (see SKF Product Information 401 Pub .: 1994, page 26 ff.).
- Lightning protection systems are known from the prior art.
- the rotor blade tip is formed as an aluminum molding.
- an aluminum profile is incorporated immediately below the surface.
- These profiles connect the aluminum part to the blade tip with an aluminum ring placed around the blade root near the blade flange.
- the ring is located at a sufficient distance from the conductive parts in the blade terminal area, so that the insulation is taken over by the blade itself. Since the lightning discharge already takes place at the blade root and not via hub and rotor bearing, the rotor bearings are spared from any consequential damage. The transfer takes place via interception rods (spark gap), which in turn transmit the lightning strike directly into the stationary part of the system.
- Air rods are located on the rotor fairing (each assigned to one of the three blades) and on the rear of the nacelle cover.
- the lightning is derived from there via Statortragarme, journals, machine carrier and tower in the foundation of the system. With the help of this arrangement, a lightning strike is transferred regardless of the current position of the rotor, as well as independent of the current rotor blade angle to the supporting structure.
- the object of the invention is to direct the lightning in the wind power plant so that the current flow is derived while avoiding the use of a spark gap.
- the object is achieved by a device for dissipating a lightning in a wind turbine, wherein the wind turbine at least one rotor blade which is coupled to a hub, a slow shaft which is coupled to the hub substantially rotationally fixed, a bearing which the shaft rotatably supports with respect to a main frame, the main frame at least receives a means for converting mechanical energy and having a tower, the tower is conductively connected to the ground, the rotor blade means for initiating the flash and means for guiding the Lightning, wherein the means for directing the flash are in conductive contact with a conductive transmission unit, wherein the transmission unit is formed as a slip ring and a brush having a sliding contact and is conductively connected to the tower.
- the wind turbine may comprise two, three or more rotor blades.
- the means for converting mechanical energy may include a generator and / or a transmission.
- the gearbox converts the rotational speed or the rotational moment in a usually faster speed.
- the generator generates electrical energy from the mechanical energy (torque).
- the means for initiating the flash can be designed as an aluminum molding, wherein the aluminum molding can form the blade tip or can be located at the blade tip of the rotor.
- the means for directing the flash may be configured as an electrically conductive material which is in conductive contact with the means for initiating the flash.
- the means for initiating may comprise a sheathed copper cable.
- the transmission unit which is in conductive contact with the means for directing the lightning
- the lightning can be conducted from a rotating to a stationary device or vice versa.
- the transmission unit has a sliding contact.
- This sliding contact can be designed as a slip ring and correspondingly assigned brush.
- the slip ring and the brush may be formed from metals, graphite or other conductive materials.
- the slip ring can be made electrically insulating with respect to the tower. As a result, an uncontrolled directing of the lightning can be avoided.
- the hub can be made electrically conductive and a physical connection to the tower electrically insulating. As a result, an uncontrolled directing of the lightning between hub and tower can be avoided.
- the means for converting mechanical energy with respect to the tower may be designed to be electrically insulating. Thereby, uncontrolled conduction of the lightning via the means for converting mechanical energy can be avoided.
- the sliding contact can form an electrically conductive connection to the tower by means of a cable.
- the lightning can be conducted via the cable to the usually metallic tower.
- the flash can also be passed directly through the cable into the ground.
- the slip ring of the sliding contact can be configured as part of the parking brake.
- the brake disc can additionally exert the function of the slip ring.
- the slip ring may be configured in copper and the brush in graphite.
- Fig. 2 shows the upper part of a wind turbine
- Fig. 3 shows an embodiment of the invention.
- FIG. 2 shows the transition for the flash from a rotating device to a device.
- the rotor blades 107 are connected to the hub 230.
- the hub 230 is rotatably connected to the slow shaft 207.
- the slow shaft 207 is rotatably mounted in the main bearing 209 and leads into the transmission 203, which is the torque the slow wave converts into a fast shaft 205 torque.
- the fast shaft 205 is connected to the generator 201, wherein the generator 201 converts the rotation of the fast shaft 205 into electrical energy.
- Both the gear 203 and the generator 201 are isolated (215) connected to the main frame (not shown) (217).
- the main frame carries both the tool house 101 and the main bearing 209 and is rotatably supported by the azimuth bearing 213 on the metallic tower 103.
- the transfer unit shown in FIG. 3 comprises a slip ring 303 and a brush 305, which is pressed onto the slip ring 303 by means of a conductive spring 307.
- a conductive contact forms between slip ring 303 and brush 305.
- the slip ring 303 is rotatably connected by means of an insulating flange 301 with the slow shaft 207.
- the conductive spring 307 is connected to the tower 101. For the forwarding of the lightning, the conductive spring is conductively connected to the part of the lightning conductor 109 (309).
- the slip ring 303 rotates with the slow shaft 207, and the spring 307 makes conductive contact with the brush 305 for the entire rotation.
- the flash will preferentially take the path of least resistance, here via the slip ring 303 and brush 305.
- the flash will be guided by a rotating (hub / rotor blade 230/107) to a device 101 standing thereon.
- a loop 221 is provided. This is realized here by a sheathed multicore copper cable (part of 109). This copper cable is connected to the tower 103 in conductive connection 219.
- the copper cable can also be designed so that the copper cable protrudes directly into the ground. This is especially intended for lattice towers.
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007052525A DE102007052525B4 (de) | 2007-11-01 | 2007-11-01 | Vorrichtung zum Ableiten eines Blitzes bei einer Windenergieanlage |
PCT/DE2008/001781 WO2009056121A2 (de) | 2007-11-01 | 2008-11-03 | Vorrichtung zum ableiten eines blitzes bei einer windenergieanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2220368A2 true EP2220368A2 (de) | 2010-08-25 |
Family
ID=40514342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08845664A Withdrawn EP2220368A2 (de) | 2007-11-01 | 2008-11-03 | Vorrichtung zum ableiten eines blitzes bei einer windenergieanlage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2220368A2 (de) |
DE (2) | DE102007052525B4 (de) |
WO (1) | WO2009056121A2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112012013822A2 (pt) * | 2009-12-09 | 2016-05-03 | Siemens Ag | sistema de proteção contra raios para uma turbina eólica e turbina eólica com um sistema de proteção contra raios |
EP2336559A1 (de) * | 2009-12-15 | 2011-06-22 | Vestas Wind Systems A/S | Blitzenergieübertragungseinheit für ein Windrad |
EP2395238B1 (de) * | 2010-06-10 | 2014-04-02 | Siemens Aktiengesellschaft | Windturbine mit einem Blitzschutzsystem |
CN102623895B (zh) * | 2011-01-31 | 2013-03-20 | 华锐风电科技(集团)股份有限公司 | 防雷装置及风电机组 |
EP2520796B1 (de) * | 2011-05-03 | 2015-08-12 | Siemens Aktiengesellschaft | Blitzschlagschutzsystem für eine Windturbine und Verfahren zum Schützen von Komponenten einer Windturbine vor Blitzeinschlägen |
KR20130084612A (ko) | 2011-12-09 | 2013-07-25 | 미츠비시 쥬고교 가부시키가이샤 | 풍차 날개 |
CN103174603A (zh) * | 2011-12-23 | 2013-06-26 | 新疆金风科技股份有限公司 | 一种风力发电机组防雷装置及风力发电机组 |
CN102619706A (zh) * | 2012-04-27 | 2012-08-01 | 东方电气集团东方汽轮机有限公司 | 海上风力发电机组 |
DE102012113075A1 (de) * | 2012-12-22 | 2014-06-26 | 2-B Energy B.V. | Verfahren zur Ableitung der elektrischen Energie eines Blitzschlags bei einer Windenergieanlage und Windenergieanlage |
CN103603775B (zh) | 2013-11-22 | 2016-06-01 | 北京金风科创风电设备有限公司 | 防雷装置、直驱风力发电机组及其雷电防护方法 |
CN104495656B (zh) * | 2014-12-16 | 2017-12-15 | 太原重工股份有限公司 | 一种起重机及其避雷装置 |
DK3234352T3 (en) * | 2014-12-18 | 2018-11-05 | Vestas Wind Sys As | A DOWNLOAD TRANSMISSION UNIT FOR A WINDMILL |
CN108799017B (zh) * | 2018-06-29 | 2019-08-23 | 北京金风科创风电设备有限公司 | 防雷装置及风力发电机组 |
CN108869201B (zh) * | 2018-06-29 | 2019-08-30 | 北京金风科创风电设备有限公司 | 防雷装置和风力发电机组 |
EP3628864B1 (de) * | 2018-09-27 | 2021-07-21 | Siemens Gamesa Renewable Energy A/S | Windturbine |
EP3923423A1 (de) | 2020-06-09 | 2021-12-15 | Siemens Gamesa Renewable Energy A/S | Stromkreislauf und windturbine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000265938A (ja) * | 1999-03-17 | 2000-09-26 | Hitachi Ltd | 風力発電の雷保護システム |
DE10022128C1 (de) * | 2000-05-06 | 2001-12-20 | Aloys Wobben | Windenergieanlage |
ES2161196B1 (es) * | 2000-05-09 | 2002-05-16 | Torres Disenos Ind S A M | Instalacion de pararrayos para aerogeneradores. |
DK177270B1 (da) * | 2002-11-12 | 2012-09-10 | Lm Wind Power As | Lynbeskyttelse af pitchreguleret vindmøllevinge |
ES2375140T3 (es) * | 2004-02-27 | 2012-02-27 | Repower Systems Se | Instalación de pararrayos para plantas de energ�?a eólica. |
DE102004022299A1 (de) * | 2004-05-04 | 2005-12-01 | Stemmann-Technik Gmbh | Windenergieanlage |
DE102004012946B4 (de) * | 2004-03-17 | 2006-03-23 | Stemmann-Technik Gmbh | Windenergieanlage |
-
2007
- 2007-11-01 DE DE102007052525A patent/DE102007052525B4/de not_active Expired - Fee Related
-
2008
- 2008-11-03 EP EP08845664A patent/EP2220368A2/de not_active Withdrawn
- 2008-11-03 WO PCT/DE2008/001781 patent/WO2009056121A2/de active Application Filing
- 2008-11-03 DE DE112008002881T patent/DE112008002881A5/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009056121A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009056121A2 (de) | 2009-05-07 |
DE102007052525B4 (de) | 2009-08-27 |
WO2009056121A3 (de) | 2010-04-22 |
DE102007052525A1 (de) | 2009-05-07 |
DE112008002881A5 (de) | 2010-07-29 |
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Legal Events
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18D | Application deemed to be withdrawn |
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R18D | Application deemed to be withdrawn (corrected) |
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