CN201401288Y - Wind generating set utilizing lightning protection design scheme - Google Patents
Wind generating set utilizing lightning protection design scheme Download PDFInfo
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- CN201401288Y CN201401288Y CN2009201072961U CN200920107296U CN201401288Y CN 201401288 Y CN201401288 Y CN 201401288Y CN 2009201072961 U CN2009201072961 U CN 2009201072961U CN 200920107296 U CN200920107296 U CN 200920107296U CN 201401288 Y CN201401288 Y CN 201401288Y
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- power generating
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- 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
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Abstract
The utility model discloses a wind generating set utilizing a lightning protection design scheme, which comprises fan blades, a tower, an engine room, a generator, a transformer and a gearbox. The engine room is arranged on the tower, the front end of the engine room is equipped with the fan blades, the fan blades drive the generator to operate through the gearbox, and the generator is electrically connected with the transformer. The wind generating set is further provided with lightning-proof down conductors (1), the upper end of each down conductor (1) is fixed at a predicted lightning strike point on each fan blade, and the lower end of each down conductor (1) is changed into a spring form after passing through an opening of a wire passing cylinder (3) and is fixed on a hub after penetrating through a center hole of a lightning-proof support (4). The above lightning-proof measures can resolve problems that back flashover current and high voltage of lightning interfere signal cables,simultaneously prevent insulation layers of the down conductors from being damaged or even twisted off, thereby stopping heavy damages of the fan blades caused by direct lightning flash.
Description
Technical field
The utility model relates to a kind of wind power generating set that adopts anti-thunder and lightning design proposal, belongs to technical field of wind power generating equipment.
Background technique
Current, wind-power electricity generation is subjected to the great attention of national governments, energy circle and environmental protection circle as reproducible clean energy resource.The wind-powered electricity generation industry of China has also been stepped into the high speed development track, and the market prospects of wind power plant manufacturing and association area are very wide.
Wind power generating set is usually located at open open-air zone, and highly very high, so whole wind power generating set is exposed under the threat of direct stroke.Electric, the electronic equipment of a large amount of sensitivities concentrated in blower fan inside, and the damage that brings of once being struck by lightning will be very large.Therefore, electric, the electronic equipment that is necessary in the blower fan provides complete lightning protection scheme.
In existing blower fan lightning protection scheme, because wind bar blower fan blade is nonmetallic glass fibre reinforced plastics, therefore arrester is not set usually carries out the direct lightning strike protection, but lightning conductor is set in the upper end, cabin, form the artificially net by metal flexible cord and metal tube column foot plinth ring.In the lower end of metal tube tower, a level power supply SPD (Surge Protector) is installed on the grounding bar of control box, and any SPD is not installed on the telecommunication cable from the cabin down to control box usually.
Facts have proved that it is far from being enough only in the power supply one-level of wind power plant SPD being installed.In addition, owing to the down lead of blade to wheel hub directly is fixed on the wheel hub, the blade rotation can cause the isolation layer of down lead to damage even twist off, thereby wind power generating set is brought serious potential safety hazard.Therefore, existing wind power generating set lightning protection scheme must be further improved.
At the lightning protection problem of wind power generating set, people have attempted the multiple technologies solution.Be in the PCT application of WO00/14405 for example, proposed a kind of wind turbine blade that has lightning arrester at international application no.This lightning arrester is made by the carbon fiber reinforced plastic band of one or more prolate, and these fiber bands constitute the part of wind turbine blade.The carbon fiber reinforced plastic band of prolate has strengthened blade in this way and has made the thunder and lightning shunting.In addition, be in the Chinese utility model patent of 200720061832.X in the patent No., a kind of wind power generating set lightning-protection system has been proposed.This system is provided with thunder and lightning acceptor and conductor means on blade inside and cabin, on wheel hub, main shaft, gear-box, frame and pylon, be provided with electric discharge device, thunder and lightning acceptor and conductor means are electrically connected with electric discharge device, electric discharge device be arranged on underground earthed system and be electrically connected.This system can overcome its moment of thunderbolt huge electric current and voltage harm that wind power generating set is brought.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of wind power generating set that adopts anti-thunder and lightning design proposal.This wind power generating set has adopted multinomial anti-thunder and lightning design from aspects such as outside direct lightning strike protection, internal lighting protection, power line wiring, signal line wiring, equipotential connections.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
A kind of wind power generating set that adopts anti-thunder and lightning design proposal, comprise blower fan blade, pylon, cabin, generator, transformer, gear-box, described cabin is installed on the described pylon, the front end in cabin is provided with described blower fan blade, described blower fan blade drives described generator operation by described gear-box, described generator is electrically connected with described transformer, it is characterized in that:
Described wind power generating set also has the down lead 1 that is used for anti-thunder and lightning, the upper end of described down lead 1 is fixed on the expectation lightning strike spot place on the described blower fan blade, change form of springs into after the perforate of lower end by cabling tube 3, be fixed on the wheel hub after passing the center hole of lightning protection support 4.
Also have a plurality of Surge Protectors on the described wind power generating set.
Described Surge Protector is arranged on the rotor-side 8 and the stator side 9 of generator, installs near the terminal box of generator, and distance is less than 1 meter.
Signaling line from the cabin to control box separates with the bind of primary power cable, and both keep the distance more than 0.6 meter.
Signaling line adds screen layer protection, the two-terminal-grounding up and down of screen layer by the mode that installs metallic channel or metal tube additional.
More than 0.8 meter, the screen layer at two ends and reinforcement metal core be ground connection all at underground buried depth for fiber optic cables from the control box to the central control chamber.
Draw a cylinder manifold at pipe column foot plinth with the multiply copper cash, the screen layer of power cable, the screen layer of signal line are connected on the described cylinder manifold.
Wind power generating set provided by the utility model can solve the counterattack electric current of thunder and lightning and the high voltage interference problem to signal cable, the isolation layer that has prevented down lead simultaneously damages even twists off, thereby has stopped the grievous injury that direct lightning strike causes the blower fan blade.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is the overall lightning Protection Design wiring diagram of wind power generating set provided by the utility model.
Wherein, 1 is down lead, and 2 is people's orifice plate, and 3 is the cabling tube, 4 are the lightning protection support, and 5 is main shaft lightning protection carbon brush, and 6 is main bearing seat, and 7 is lightning arrester, 8 is the generator amature side, and 9 is the generator unit stator side, and 10 is support, 11 is main shaft carbon brush ground wire, and 12 is tower tube carbon brush ground wire, and 13 is tower tube carbon brush, 14 for stator connects tower tube line, and 15 are copper establishment line, and 16 is the generator rotor ground line, 17 is power line, and 18 is signaling line, and 19 is annular independent earth polar.
Embodiment
Wind power generating set provided by the utility model comprises constituent elements such as blower fan blade, pylon, cabin, generator, transformer, gear-box.Wherein the cabin is installed on the pylon, and the front end in cabin is provided with the blower fan blade, and the blower fan blade drives generator operation by gear-box, and generator is electrically connected with transformer.These all are the conventional design that persons skilled in the art are familiar with, and have not just given unnecessary details in detail at this.
In order to overcome the deficiency of existing wind power generating set lightning protection scheme, the utility model is described in detail respectively below from having carried out comparatively complete lightning Protection Design from aspects such as outside direct lightning strike protection, internal lighting protection, power line wiring, signal line wiring, equipotential connections.
As everyone knows, International Electronical Commission (IEC) is divided into the zone of protection of lightning protection overvoltage protection: LPZ0 district, LPZ1 district and LPZ2 district.The inventor is through anatomizing, think for wind power generating set, under the good situation in metal tower bridge joint ground, the outside in blower fan blade, cabin (comprising the cabin), pylon outside (comprising pylon) overhead conductor, transformer should belong to the LPZ0 district, these positions be suffer direct lightning strike (around thunder) or do not suffer direct lightning strike but electromagnetic field do not have the decay the position.Equipment in the cabin, in the pylon should belong to the LPZ1 district, and this is comprising cable, generator, gear-box etc.Equipment in the pylon in the regulator cubicle, particularly shielding preferably, weak current part should belong to the LPZ2 district.
The thunderbolt point of wind power generating set generally is on the blade of blower fan, so the arrester expectation lightning strike spot that should be arranged in blade is in advance sentenced and connect the sudden strain of a muscle thunder-strike current.As shown in Figure 1, in order to solve the direct lightning strike problem in LPZ0 district, after the utility model is fixed on the expectation lightning strike spot place of blade with silicon sealant with the upper end of down lead 1, continuation is with the perforate of down lead 1 by cabling tube 3, the down lead of lower end is made form of springs, be fixed on the wheel hub after passing the center hole of lightning protection support 4.Like this, whole wind power generating set for the ground connection route that outside direct lightning strike provides is: thunderbolt (on the blade) arrester → (blade inner chamber) guide wire → propeller shank → cabin mainframe → ad hoc (pylon) down lead → grounded screen is introduced the earth.
In addition, in order further to reduce the adverse effect of outside direct lightning strike, the utility model selects the high probability point place of lightning strike that lightning conductor interception thunder and lightning is set according to the principle of " thunderbolt selectivity " at the whole wind electric field.For example in one embodiment, in highly different positions, three places three lightning conductor towers are set respectively respectively.This position, three places is the position that subjects to thunder and lightning in the wind energy turbine set of rule of thumb determining.Then, on each lightning conductor tower, load onto lightning conductor respectively.The place, basis of each lightning conductor tower should be provided with annular independent earth polar 19, its earth resistance≤10 Ω.Lightning conductor can be E.S.E6000 type or other similar model.Guide in advance can take place in this type of E.S.E lightning conductor before lightning, thereby reduced the development of surrounding space electric charge.
The electrical equipment in LPZ1 district is being prevented thunder and lightning when design, the inventor has broken through the limitation of DINVDE 0185 standard that traditional wind group artificer followed.This is because this standard only is applicable to blade, pylon, pylon outside, the cabin of wind power generating set, the lightning protection overvoltage protection of nacelle exterior, can not satisfy the requirement of pylon engine room inside electrical system lightning protection overvoltage protection.In the lightning protection overvoltage protection of pylon, engine room inside electrical system, the inventor thinks that through further investigation the SPD (Surge Protector) of generator should try one's best near the terminal box installation of generator, and more better, distance is preferably less than 1 meter.Can avoid producing overvoltage and hiding in generator windings the over-voltage breakdown that the insulation of generator windings is hidden like this because the counterattack current phenomena takes place between SPD and the equipment that needs protection.
The utility model is in the internal lighting protection design proposal at the LPZ2 district; eliminate the induction current that thunder and lightning produces by three grades of SPD (Surge Protector); the i.e. measure of all having taked the anti-induction thunder and lightning to invade at the entrance point of power line, signaling line, datawire; installed three grades of SPD etc. additional, with satisfy ground connection, all press, technical requirements such as shielding, amplitude limit, shunting, isolation.
The protective action of three grades of SPD has nothing in common with each other, and they are divided into three grades of B, C, D, and wherein the effect of B level is to take shelter from the thunder, and the effect of C level is overvoltage protection, and the effect of D level is that surge absorbs protection.Three grades of positions that SPD placed are also different, for example for generator, should corresponding SPD be set in generator amature side 8, stator side 9; For the switch cubicle of cabin, the cable from the column foot control cabinet to the cabin switch cubicle should be installed SPD at the entry end that circuit enter switch cubicle; For the wheel hub pitch-controlled system, the entry end that enters pitch-controlled system at power line and signaling line is installed corresponding SPD; For the column foot frequency conversion tank, the power circuit that comes from generator unit stator and rotor should be installed corresponding SPD when entering frequency conversion tank; For the column foot control cabinet, externally the cable entry end that enters control cabinet is installed corresponding SPD; For transformer, then first order SPD is installed at step down side, in the transformer high-voltage side corresponding high-voltage arrester is installed.
In addition, in order further to improve the lightning protection effect in LPZ2 district, the metal shell of a sealing is made in the cabin, and relevant electrical equipment all is contained in the control box.Cable between the distinct device in column foot and cabin should have the external metallization screen layer.Should untie bind with primary power cable from the cabin to the signaling line of control box, both should keep the safe distance more than 0.6 meter.Signaling line adds the screen layer protection by the mode that installs metallic channel or metal tube additional, and reliable ground is answered at the two ends up and down of metal screen layer.Fiber optic cables from the control box to the central control chamber also should be at underground buried depth more than 0.8 meter, and the metal screen layer at two ends and reinforcement metal core are all answered ground connection.
Equipotential connects can effectively suppress the potential difference that thunder and lightning causes, has crucial meaning in shocking preventing technology.In equipotential connecting treatment of the present utility model, mainly comprise three aspects: the first, draw a cylinder manifold at pipe column foot plinth with the multiply copper cash, reliably be connected to power cable screen layer, signal line screen layer etc. on the cylinder manifold; The second, the basic earth mat of central control chamber draw a cylinder manifold for computer logic ground, electrical safety ground and shielding, SPD ground connection is shared; The 3rd, draw a cylinder manifold at the multiple grounding place of transformer shared for circuit bonding and SPD ground connection.The earth resistance of each common grounded screen should not be greater than 10 Ω.
More than the wind power generating set of the anti-thunder and lightning design proposal of employing provided by the utility model is had been described in detail.For one of ordinary skill in the art, any conspicuous change of under the prerequisite that does not deviate from the utility model connotation it being done all will constitute to the utility model infringement of patent right, with corresponding legal responsibilities.
Claims (7)
1. one kind is adopted the wind power generating set of preventing the thunder and lightning design proposal, comprise blower fan blade, pylon, cabin, generator, transformer, gear-box, described cabin is installed on the described pylon, the front end in cabin is provided with described blower fan blade, described blower fan blade drives described generator operation by described gear-box, described generator is electrically connected with described transformer, it is characterized in that:
Described wind power generating set also has the down lead (1) that is used for anti-thunder and lightning, described down lead
(1) upper end is fixed on the expectation lightning strike spot place on the described blower fan blade, and the lower end is by the cabling tube
(3) change form of springs into after the perforate, be fixed on the wheel hub after passing the center hole of lightning protection support (4).
2. wind power generating set as claimed in claim 1 is characterized in that:
Also have a plurality of Surge Protectors on the described wind power generating set.
3. wind power generating set as claimed in claim 2 is characterized in that:
Described Surge Protector is arranged on generator amature side (8) and generator unit stator side (9), installs near the terminal box of generator, and distance is less than 1 meter.
4. wind power generating set as claimed in claim 1 is characterized in that:
Signaling line from the cabin to control box separates with the bind of primary power cable, and both keep the distance more than 0.6 meter.
5. wind power generating set as claimed in claim 1 is characterized in that:
Signaling line adds screen layer protection, the two-terminal-grounding up and down of screen layer by the mode that installs metallic channel or metal tube additional.
6. wind power generating set as claimed in claim 1 is characterized in that:
More than 0.8 meter, the screen layer at two ends and reinforcement metal core be ground connection all at underground buried depth for fiber optic cables from the control box to the central control chamber.
7. wind power generating set as claimed in claim 1 is characterized in that:
Draw a cylinder manifold at pipe column foot plinth with the multiply copper cash, the screen layer of power cable, the screen layer of signal line are connected on the described cylinder manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201072961U CN201401288Y (en) | 2009-04-28 | 2009-04-28 | Wind generating set utilizing lightning protection design scheme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201072961U CN201401288Y (en) | 2009-04-28 | 2009-04-28 | Wind generating set utilizing lightning protection design scheme |
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| Publication Number | Publication Date |
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| CN201401288Y true CN201401288Y (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201072961U Expired - Lifetime CN201401288Y (en) | 2009-04-28 | 2009-04-28 | Wind generating set utilizing lightning protection design scheme |
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| CN (1) | CN201401288Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644739A (en) * | 2011-02-18 | 2012-08-22 | 新疆金风科技股份有限公司 | Sealing method of connecting flange and wind driven generator |
| CN102971530A (en) * | 2010-06-29 | 2013-03-13 | 苏司兰能源有限公司 | Nacelle cover for wind turbine nacelle |
| CN104405594A (en) * | 2014-11-17 | 2015-03-11 | 中国第一重型机械股份公司 | Direct-driven fan with lightning protection function |
| CN104500352A (en) * | 2014-12-19 | 2015-04-08 | 北京天源科创风电技术有限责任公司 | Blade of wind turbine generator set |
| CN107086378A (en) * | 2017-06-12 | 2017-08-22 | 国电联合动力技术有限公司 | A kind of cable clamping apparatus and the Wind turbines including the device |
| CN108242792A (en) * | 2016-12-23 | 2018-07-03 | 广东互云科技有限公司 | A kind of segmented thunder resisting equipment |
| CN110582637A (en) * | 2017-02-21 | 2019-12-17 | 西门子歌美飒可再生能源公司 | Wind turbine comprising a grounding system for transferring lightning current and for providing EMF shielding |
| 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 |
| CN111336066A (en) * | 2020-03-04 | 2020-06-26 | 湖南城市学院 | Wind power generation system for generating energy and control method |
| CN114068073A (en) * | 2020-07-31 | 2022-02-18 | 北京金风科创风电设备有限公司 | Cable, wind generating set and cable laying method |
| CN114068073B (en) * | 2020-07-31 | 2024-06-07 | 北京金风科创风电设备有限公司 | Cable, wind generating set and cable laying method |
-
2009
- 2009-04-28 CN CN2009201072961U patent/CN201401288Y/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971530A (en) * | 2010-06-29 | 2013-03-13 | 苏司兰能源有限公司 | Nacelle cover for wind turbine nacelle |
| US9422924B2 (en) | 2010-06-29 | 2016-08-23 | Suzlon Energy Gmbh | Nacelle cover |
| CN102644739A (en) * | 2011-02-18 | 2012-08-22 | 新疆金风科技股份有限公司 | Sealing method of connecting flange and wind driven generator |
| CN102644739B (en) * | 2011-02-18 | 2015-11-25 | 新疆金风科技股份有限公司 | A kind of encapsulating method of connecting flange and wind-driven generator |
| CN104405594A (en) * | 2014-11-17 | 2015-03-11 | 中国第一重型机械股份公司 | Direct-driven fan with lightning protection function |
| CN104500352A (en) * | 2014-12-19 | 2015-04-08 | 北京天源科创风电技术有限责任公司 | Blade of wind turbine generator set |
| CN108242792B (en) * | 2016-12-23 | 2023-10-20 | 广东互云科技有限公司 | Sectional type lightning protection equipment |
| CN108242792A (en) * | 2016-12-23 | 2018-07-03 | 广东互云科技有限公司 | A kind of segmented thunder resisting equipment |
| CN110582637A (en) * | 2017-02-21 | 2019-12-17 | 西门子歌美飒可再生能源公司 | Wind turbine comprising a grounding system for transferring lightning current and for providing EMF shielding |
| CN110582637B (en) * | 2017-02-21 | 2021-10-26 | 西门子歌美飒可再生能源公司 | Wind turbine comprising a grounding system for transferring lightning current and for providing EMF shielding |
| US11592006B2 (en) | 2017-02-21 | 2023-02-28 | Siemens Gamesa Renewable Energy A/S | Wind turbine comprising a grounding system for transferring lightning current and for providing EMF shielding |
| CN107086378A (en) * | 2017-06-12 | 2017-08-22 | 国电联合动力技术有限公司 | A kind of cable clamping apparatus and the Wind turbines including the device |
| 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 |
| CN111336066A (en) * | 2020-03-04 | 2020-06-26 | 湖南城市学院 | Wind power generation system for generating energy and control method |
| CN114068073A (en) * | 2020-07-31 | 2022-02-18 | 北京金风科创风电设备有限公司 | Cable, wind generating set and cable laying method |
| CN114068073B (en) * | 2020-07-31 | 2024-06-07 | 北京金风科创风电设备有限公司 | Cable, wind generating set and cable laying method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Inner Mongol Harpower Energy Technology Co., Ltd. Assignor: Sharpower Technology Co., Ltd. Contract record no.: 2010990000891 Denomination of utility model: Wind generating set utilizing lightning protection design scheme Granted publication date: 20100210 License type: Exclusive License Record date: 20101109 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100210 |