CN201994656U - Large-scale lightning protection system for marine wind generating set - Google Patents
Large-scale lightning protection system for marine wind generating set Download PDFInfo
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- CN201994656U CN201994656U CN2011200476490U CN201120047649U CN201994656U CN 201994656 U CN201994656 U CN 201994656U CN 2011200476490 U CN2011200476490 U CN 2011200476490U CN 201120047649 U CN201120047649 U CN 201120047649U CN 201994656 U CN201994656 U CN 201994656U
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Abstract
The utility model discloses a large-scale lightning protection system for a marine wind generating set, wherein, lightning protectors are respectively arranged on three rotor blades, the top of a cabin cover and a bracket of an aerovane; a lightning protection network is arranged around a generator cabin; the lightning protectors are connected with the lightning protection network; in addition, the lightning protection network is connected with a tower of a generator, and can achieve the conductive grounding through the tower per se. The lightning protectors adopt a manner that lightning receivers are arranged at blade tips of the three rotor blades, and lightning rods are arranged at the top of the cabin cover and the bracket of the aerovane. All facilities in the generator cabin are connected with the lightning protection network. The lightning protection network is made of copper cables of 70 mm<2> in an enclosing manner. The lightning protection network and the tower are connected through two collector rings made of stainless steel. The design scheme of the large-scale lightning protection system can actively absorb a direct lightning flash and can guide the direct lightning flash to a grounded resistor so as to lead the direct lightning flash to the earth, can achieve well shielding and blocking effect on ferromagnetic induction and partial excess voltage, and greatly improves the overall security and the reliability of the wind generating set.
Description
Technical field
The utility model relates to a kind of anti-lightning strike system, particularly a kind of lightning-protection system that is used for large-scale offshore wind generating group.
Background technology
The Oversea wind power generation characteristics are: blower fan is placed in the sea, and the high point of large fan blade (hub height adds the wind wheel radius) reaches 120～140m, very easily is struck by lightning; The electric insulation of wind turbine generator low (generator voltage 690V, in a large number use automation control and communication device) and the environment of offshore wind farm unit are abominable more than the environment of conventional wind turbine generator.The single-machine capacity of offshore wind generating group is increasing, in order to absorb more multipotency, hub height and impeller diameter are along with increasing, the relative risk of being struck by lightning that also increased, the huge energy that thunder and lightning discharges can cause that wind generator set blade damages, generator insulating punctures, controlling parts is burnt etc.China's Coastal Areas is with a varied topography, and thunderstorm day is more, the grave danger that should fully pay attention to being struck by lightning and bring to wind-powered electricity generation unit and operations staff.For example, gulf, Red sea wind energy turbine set is constructed and put into operation the incident of repeatedly being struck by lightning has taken place so far, and according to statistics, blade is reached 4% by the rate of hitting, and other communication electric elements are hit rate more up to 20%.In order to reduce the loss that natural calamity is brought, must make the precautionary measures targetedly.
Summary of the invention
The utility model provides a kind of large-scale offshore wind generating group lightning-protection system, is struck by lightning easily to solve the large-scale offshore wind generating group that exists in the above-mentioned background technology, and wind turbine generator is caused damage, the technical problem that personnel are threatened.
A kind of large-scale offshore wind generating group lightning-protection system, on the support respectively at three moving vanes, cabin tops and anemoclinograph lightning arrester is housed, be provided with anti-Thunder Network around the generator cabin, described lightning arrester is connected to anti-Thunder Network, described anti-Thunder Network connects the tower tube of generator, by described tower tube self-conductive ground connection.
Wherein, described lightning arrester all is equipped with lightning rod for the blade tip at three moving vanes is equipped with arrester on the support of cabin tops and anemoclinograph.
Wherein, all devices in the described generator cabin all is connected to described anti-Thunder Network.
Wherein, described anti-Thunder Network 70mm
2Copper cabling is around making.
Wherein, described anti-Thunder Network is connected with two stainless collector rings with the tower tube.
Wherein, the processor in the described cabin adopts fiber optic cables to be connected with ground controller, and described processor adopts optical fiber to be connected with power module.
Present design is through the field practice checking, direct lightning strike initiatively can be attracted and water conservancy diversion to earth resistance introducing the earth, and can play good shielding and barrier effect for strong magnetic induction and local overvoltage, greatly improve wind-powered electricity generation unit overall security and reliability.
Description of drawings
Fig. 1 is a structural front view of the present utility model;
Fig. 2 is the front view after A partly amplifies among Fig. 1;
Fig. 3 is the vertical view of Fig. 2.
Embodiment
For shape of the present utility model, structure and characteristics can be understood better, below will enumerate preferred embodiment and also be elaborated in conjunction with the accompanying drawings.
The utility model can prevent direct lightning strike and induction thunder.For direct lightning strike, whole blower fan has the direct striking thunder prevention design of 5 places, on the support respectively at three moving vanes, cabin tops and anemoclinograph lightning arrester is housed.Lightning arrester is connected to anti-Thunder Network, and anti-Thunder Network connects the tower tube 4 of generator, by described tower tube 4 self-conductive ground connection.Catch thunder and lightning and guide to the earth by the lightning arrester at above five positions, thereby guarantee device security.
Concrete, at the blade tip of three moving vanes arrester 1 is housed and catches thunder and lightning, on the support of cabin tops and anemoclinograph 3 lightning rod 2 is housed all.Arrester 1 passes through blade inner chamber guide wire again to the conducting system of root of blade and the becket of root of blade after catching thunder and lightning, and the lightning protection of thunder and lightning being guided to cabin 5 mainframes is online, and the earth are introduced by tower tube 4 in the back.Cause blade heating expansion itself, the infringement of splitting to avoid thunder and lightning to attack directly.Two lightning rods 2 on the cabin top are parallel respectively is connected to anti-Thunder Network.
Having 6, three spark discharger 6 of 3 parallel spark discharger to differ 120 degree between root of blade pitch variable bearings and the wheel hub 8 installs.In order to compensate the imbalance of static behind the thunder and lightning, each spark discharger is with a charcoal fiber brush.
Also there are 3 parallel spark discharger 65 junction to wheel hub 8 to the cabin, is identical designs with the root of blade pitch variable bearings to the spark discharger 6 between the wheel hub 8.Spark discharger 6 is passages of thunder and lightning water conservancy diversion, that is to say, after blade tip arrester 1 is caught thunder and lightning, earlier be transmitted to root of blade from blade tip, by 3 spark discharger 6 water conservancy diversion between root of blade and the wheel hub to wheel hub 8, arrive cabin 5,5 grounding system ground connection then by 3 spark discharger 6 water conservancy diversion between wheel hub 8 and the cabin 5 again through the cabin.3 spark discharger 6 herein also all have the carbon fiber brush.
In order to protect engine room facilities,, designed one and used 70mm around the cabin housing parts
2Copper cabling is around the anti-Thunder Network of making, and it is online that all devices in the cabin all is connected to this lightning protection, comprising: equipment such as gear box, generator base, main framing, protective earthing system.Simultaneously, arrester 1 and lightning rod 2 on 5 tops, cabin are connected to anti-Thunder Network.Cable places in the conduit of cabin shell.The cable junction is connected on the surface with bolt with infall, surrounds along the cylinder mould of cabin contour structure, i.e. and Faraday cage, thus cabin 5 internal units are formed protection.
Anti-Thunder Network is connected with two stainless collector rings of tower tube 4 usefulness, does not influence rotation, can guarantee that contact is good simultaneously.Thunder and lightning is behind tower tube 4, by tower tube 4 self-conductive ground connection.Ground network 7 be located at concrete foundation around, the designing requirement power frequency earthing resistance is not more than 4 Ω, impulse earthed resistance is not more than 10 Ω.
The induction thunder can produce strong magnetic induction and local overvoltage, and electronic equipment is worked the mischief.Following measure is protected:
1, equipotential tandem
Anemoclinograph 3 forms equipotential system with lightning rod 2 ground connection; The all component in cabin such as base bearing, generator, gear box, the water-cooled station ground connection that links together; The cable of cabin 5 main frames surrounds anti-Thunder Network, is connected to the ground equipotential; Metal tower tube 4 links to each other with grounding system, is connected to the ground equipotential.Be provided with electrical grounding copper bar 9 in the cabin, its current potential equates that with ground the assembly in the cabin links to each other with it and just is equivalent to ground connection.
2. quarantine measures
Processor in the cabin is communicated by letter with ground controller, adopts fiber optic cables to connect; Processor and IGBT power module adopt optical fiber to connect; To the transducer in processor and the cabin control cubicle, adopt separately direct current power source supplying power, in case thunder and lightning phase mutual interference when taking place.
3. overvoltage protective device
Be connected to the power line of cabin control cubicle from the column foot auxiliary transformer, 400V voltage is for the supply of the current consuming apparatus in cabin electric energy, as heater, cooling fan, illumination or the like.Installation lightning arrester and pressure-sensitive block of resistance prevent to produce overvoltage on power line; Control circuit in the control cubicle of cabin is a 24V voltage, so adopt Surge Protector to avoid overvoltage with the protection control appliance on control circuit.
The mixing pylon 42 and the concrete pylon 43 of tower tube 4 all is connected to the ground loop of column foot, and the column foot place also is provided with electrical grounding copper bar 9, keeps the ground equipotential.Junction 41 ground connection of tower tube 4.
Present design is through the field practice checking, direct lightning strike initiatively can be attracted and water conservancy diversion to earth resistance introducing the earth, and can play good shielding and barrier effect for strong magnetic induction and local overvoltage, greatly improve wind-powered electricity generation unit overall security and reliability.
More than be illustrative to description of the present utility model; and it is nonrestrictive; those skilled in the art is understood, and can carry out many modifications, variation or equivalence to it within spirit that claim limits and scope, but they will fall in the protection range of the present utility model all.
Claims (6)
1. one kind large-scale offshore wind generating group lightning-protection system, it is characterized in that, on the support respectively at three moving vanes, cabin tops and anemoclinograph lightning arrester is housed, be provided with anti-Thunder Network around the generator cabin, described lightning arrester is connected to anti-Thunder Network, described anti-Thunder Network connects the tower tube of generator, by described tower tube self-conductive ground connection.
2. large-scale offshore wind generating group lightning-protection system as claimed in claim 1 is characterized in that, described lightning arrester all is equipped with lightning rod for the blade tip at three moving vanes is equipped with arrester on the support of cabin tops and anemoclinograph.
3. large-scale offshore wind generating group lightning-protection system as claimed in claim 1 is characterized in that all devices in the described generator cabin all is connected to described anti-Thunder Network.
4. large-scale offshore wind generating group lightning-protection system as claimed in claim 1 is characterized in that, described anti-Thunder Network 70mm
2Copper cabling is around making.
5. large-scale offshore wind generating group lightning-protection system as claimed in claim 1 is characterized in that described anti-Thunder Network is connected with two stainless collector rings with the tower tube.
6. large-scale offshore wind generating group lightning-protection system as claimed in claim 1 is characterized in that, the processor in the described cabin adopts fiber optic cables to be connected with ground controller, and described processor adopts optical fiber to be connected with power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200476490U CN201994656U (en) | 2011-02-24 | 2011-02-24 | Large-scale lightning protection system for marine wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200476490U CN201994656U (en) | 2011-02-24 | 2011-02-24 | Large-scale lightning protection system for marine wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN201994656U true CN201994656U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200476490U Expired - Lifetime CN201994656U (en) | 2011-02-24 | 2011-02-24 | Large-scale lightning protection system for marine wind generating set |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946037A (en) * | 2012-10-26 | 2013-02-27 | 南车株洲电力机车研究所有限公司 | Method for connecting lightning channel from hub to cabin |
| CN108223305A (en) * | 2017-12-29 | 2018-06-29 | 中国电力科学研究院有限公司 | Wind power generation unit blade connects sudden strain of a muscle device with electrode |
| CN111064175A (en) * | 2019-12-31 | 2020-04-24 | 上海电力大学 | Fan blade lightning overvoltage protection method laying deicing carbon fiber net |
| CN112983745A (en) * | 2021-03-10 | 2021-06-18 | 南通尚善模塑科技有限公司 | Aerogenerator positioning device |
-
2011
- 2011-02-24 CN CN2011200476490U patent/CN201994656U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946037A (en) * | 2012-10-26 | 2013-02-27 | 南车株洲电力机车研究所有限公司 | Method for connecting lightning channel from hub to cabin |
| CN102946037B (en) * | 2012-10-26 | 2014-11-12 | 南车株洲电力机车研究所有限公司 | Method for connecting lightning channel from hub to cabin |
| CN108223305A (en) * | 2017-12-29 | 2018-06-29 | 中国电力科学研究院有限公司 | Wind power generation unit blade connects sudden strain of a muscle device with electrode |
| CN108223305B (en) * | 2017-12-29 | 2021-03-26 | 中国电力科学研究院有限公司 | Electrode lightning receiving device for wind turbine generator blade |
| CN111064175A (en) * | 2019-12-31 | 2020-04-24 | 上海电力大学 | Fan blade lightning overvoltage protection method laying deicing carbon fiber net |
| CN111064175B (en) * | 2019-12-31 | 2022-03-29 | 上海电力大学 | Fan blade lightning overvoltage protection method laying deicing carbon fiber net |
| CN112983745A (en) * | 2021-03-10 | 2021-06-18 | 南通尚善模塑科技有限公司 | Aerogenerator positioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |