CN201621007U - Direct-current exciter synchronous wind generating set - Google Patents
Direct-current exciter synchronous wind generating set Download PDFInfo
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- CN201621007U CN201621007U CN200920352292XU CN200920352292U CN201621007U CN 201621007 U CN201621007 U CN 201621007U CN 200920352292X U CN200920352292X U CN 200920352292XU CN 200920352292 U CN200920352292 U CN 200920352292U CN 201621007 U CN201621007 U CN 201621007U
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- speed
- direct
- synchronous generator
- wind generating
- regulating mechanism
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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
Abstract
The utility model relates to a direct-current exciter synchronous wind generating set which is characterized by comprising an impeller, a pedestal, a speed changing box fixed on the pedestal, a speed adjusting mechanism and a synchronous generator, wherein a target rotating speed value is set on the speed adjusting mechanism; a target voltage value is set on the synchronous generator; a wheel pivot on the impeller is fixedly connected with one end of a mobile shaft; the other end of the mobile shaft is connected with a low-speed shaft of the speed changing box; a high-speed shaft of the speed changing box is connected with the input end of the speed adjusting mechanism; the constant output end of the speed adjusting mechanism is connected with a rotor in the synchronous generator; the stator of the synchronous generator is connected with the input end of an electric net. The direct-current exciter synchronous wind generating set has excellent reactive supporting force for transmitting the stable electric power to the electric net; the direct-current exciter synchronous wind generating set is suited for the area with rich wind resources.
Description
Technical field
The utility model relates to a kind of grid type wind power generating set, particularly about a kind of direct-current excitation synchronous wind generating unit.
Background technique
China is vast in territory, the seashore line length, and wind energy resources is abundanter.According to more than 900 weather station, the whole nation land liftoff 10m height data is estimated that national average wind specific power is 100W/m
2, about 32.26 hundred million kW of wind energy resources gross reserves, the wind energy content that the land can develop has 2.53 hundred million kW, and the wind energy content that the coastal waters can develop has 7.5 hundred million kW, amounts to about 1,000,000,000 kW.If land wind-powered electricity generation year, electricity volume was by equivalence 2000 hours at full capacity, can provide 5,000 hundred million kilowatt hour electric weight every year; Offshore wind farm year, electricity volume was by equivalence 2500 hours at full capacity, and 1.8 trillion kilowatt hour electric weight can be provided every year, added up to 2.3 trillion kilowatt hour electric weight.China's wind energy aboundresources, potentiality to be exploited is huge, will become important constituent element in the future source of energy structure.China has become the fastest wind-power electricity generation market of global evolution, and past 7 years average annual growth rate reaches 56%.By the end of the year 2008, national wind-powered electricity generation installation is above 1,000 ten thousand kilowatts.Continuous increase along with the ratio of wind-powered electricity generation in net capacity, this is not only objectively requiring wind power generating set can provide idle support when electrical network breaks down, the quality of power supply, voltage problem have also occurred, and large-scale wind-powered electricity generation power supply causes problems such as electrical network unstability.And the lack of uniformity that China wind-resources distributes makes China propose higher requirement to the quality of power supply of blower fan with to the idle support of electrical network.The arrangements for speed regulation of now large-scale generator of wind generating set are all in the generator rear end, what adopt is full power frequency conversion or the frequency conversion of part power, the waveform of the electricity that sends all is the pulse duration modulation (PWM by frequency variator, Pulse Width Modulation) modulation is come out, the electricity that this mode has determined generator to send carries many higher harmonicss when flowing to electrical network, electrical network is polluted.Though can harmonic wave be reduced, but still be difficult to reach traditional thermoelectricity and Hydropower Unit is arranged the waveform effect that is reached by winding like that.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of front end speed-governing dc excitation synchro wind generator group that can carry regulated power for electrical network.
For achieving the above object, the utility model is taked following technological scheme: a kind of direct-current excitation synchronous wind generating unit is characterized in that: it comprises an impeller, a pedestal and is fixed on a gearbox, a speed regulating mechanism and a synchronous generator on the described pedestal; Wherein, described speed regulating mechanism is set with the rotating speed of target value, and described synchronous generator is set with target voltage values; Wheel pivot on the described impeller is fixedlyed connected with an end of a movable axis, the other end of described movable axis links to each other with the lower velocity shaft of described gearbox, the high speed shaft of described gearbox links to each other with the input end of speed regulating mechanism simultaneously, the constant speed output terminal of described speed regulating mechanism connects the rotor in the described synchronous generator, and the stator of described synchronous generator links to each other with the input end of electrical network.
Described gearbox is the gearbox of two-stage or third-level planetary gear.
Described speed regulating mechanism is one of hydraulic couplers and electromagnetic coupler.
Target voltage values default in the described synchronous generator is identical with the employed NBS magnitude of voltage of described electrical network.
The utility model is owing to take above technological scheme, it has the following advantages: 1, since the utility model on the basis of traditional wind power generating set, arrangements for speed regulation are placed the generator front end, and adopted a synchronous generator directly to be connected with electrical network, therefore avoided the harmonic wave that the arrangements for speed regulation frequency control of motor speed causes is input in the electrical network, the automatic voltage regulatory function of while synchronous generator, make the voltage functuation that flows to electrical network have good idle enabling capabilities, the electric energy that flows to electrical network is stable.2, owing to used synchronous generator in the utility model, and target voltage values default in the synchronous generator is identical with the employed NBS magnitude of voltage of electrical network, so the automatic voltage regulatory function of synchronous generator can make the electric energy that flows to electrical network keep stable.The utlity model has good idle enabling capabilities, can carry regulated power, go for the area of wind energy resources than horn of plenty for electrical network.
Description of drawings
Fig. 1 is the structural representation of the utility model wind power generating set
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1, a gearbox 3, a speed regulating mechanism 4 and a synchronous generator 5 that the utility model wind power generating set comprises an impeller 1, a pedestal 2 and is fixed on the pedestal 2 and connects successively, wherein, speed regulating mechanism 3 is set with the rotating speed of target value, synchronous generator 4 is set with target voltage values, and this target voltage values is identical with electrical network 6 employed NBS magnitude of voltage.Impeller 1 is made up of a plurality of blades 11 and wheel pivot 12, and blade 11 can be integrally welded with wheel pivot 12, and wheel pivot 12 is fixedlyed connected with an end of a movable axis 7.The other end of the movable axis 7 that is connected with impeller 1 links to each other with the lower velocity shaft of gearbox 3, the high speed shaft of gearbox 3 links to each other with the input end of speed regulating mechanism 4 simultaneously, the constant speed output terminal of speed regulating mechanism 4 connects the rotor in the synchronous generator 5, and the stator of synchronous generator 5 links to each other with the input end of electrical network 7.In the present embodiment, gearbox 3 can adopt the gearbox of two-stage or third-level planetary gear, but is not limited thereto; Speed regulating mechanism 4 can adopt hydraulic couplers or electromagnetic coupler etc.; Synchronous generator 5 can adopt the brushless direct-current excitation synchronous generator.
During the utility model work, impeller 1 makes that under the natural wind effect movable axis 7 has rotating speed V1, and rotating speed V1 is transferred to gearbox 3 via movable axis 7, and by gearbox 3 rotating speed V1 being increased is A V1 doubly, and above-mentioned A is one times of value by the attribute decision of gearbox 3.Because V1 is a random value, so the rotating speed AV1 of gearbox 3 outputs also is a random value.The rotating speed AV1 of gearbox 3 outputs is again via speed regulating mechanism 4, and speed governing flows to synchronous generator 5 to size and the rotating speed of target value of setting identical (that is to say, with the corresponding rotating speed of the frequency of electrical network 7).Synchronous generator 5 is converted into electric energy with kinetic energy, and voltage is adjusted to default target voltage values size automatically, flows to electrical network 7 again.Because synchronous generator 5 has the automatic voltage regulatory function, can provide good idle support when electrical network 7 voltage functuations.The utility model can provide reactive power capability and the electric energy quality identical with thermoelectricity or water power, and power factor is about 0.8.And speed regulating mechanism 4 places before the synchronous generator 5, avoided the harmonic wave that frequency control of motor speed causes is input to electrical network 7.
In the various embodiments described above; the structure of each parts, the position is set and connects and all can change to some extent; on the basis of technical solutions of the utility model,, should not get rid of outside protection domain of the present utility model improvement and the equivalents that individual component is carried out.
Claims (5)
1. direct-current excitation synchronous wind generating unit is characterized in that: it comprises an impeller, a pedestal and is fixed on a gearbox, a speed regulating mechanism and a synchronous generator on the described pedestal; Wherein, described speed regulating mechanism is set with the rotating speed of target value, and described synchronous generator is set with target voltage values; Wheel pivot on the described impeller is fixedlyed connected with an end of a movable axis, the other end of described movable axis links to each other with the lower velocity shaft of described gearbox, the high speed shaft of described gearbox links to each other with the input end of speed regulating mechanism simultaneously, the constant speed output terminal of described speed regulating mechanism connects the rotor in the described synchronous generator, and the stator of described synchronous generator links to each other with the input end of electrical network.
2. a kind of direct-current excitation synchronous wind generating unit as claimed in claim 1 is characterized in that: described gearbox is the gearbox of two-stage or third-level planetary gear.
3. a kind of direct-current excitation synchronous wind generating unit as claimed in claim 1 is characterized in that: described speed regulating mechanism is one of hydraulic couplers and electromagnetic coupler.
4. a kind of direct-current excitation synchronous wind generating unit as claimed in claim 2 is characterized in that: described speed regulating mechanism is one of hydraulic couplers and electromagnetic coupler.
5. as claim 1 or 2 or 3 or 4 described a kind of direct-current excitation synchronous wind generating units, it is characterized in that: target voltage values default in the described synchronous generator is identical with the employed NBS magnitude of voltage of described electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920352292XU CN201621007U (en) | 2009-12-30 | 2009-12-30 | Direct-current exciter synchronous wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920352292XU CN201621007U (en) | 2009-12-30 | 2009-12-30 | Direct-current exciter synchronous wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621007U true CN201621007U (en) | 2010-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920352292XU Expired - Lifetime CN201621007U (en) | 2009-12-30 | 2009-12-30 | Direct-current exciter synchronous wind generating set |
Country Status (1)
| Country | Link |
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| CN (1) | CN201621007U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299676A (en) * | 2011-04-26 | 2011-12-28 | 郝玉山 | Speed-regulation synchronous motor assembling unit |
| CN103546081A (en) * | 2013-10-24 | 2014-01-29 | 陈作平 | Power generation system of marine main engine |
| CN105649883A (en) * | 2016-03-11 | 2016-06-08 | 广州华新科实业有限公司 | Wind power coupling balanced power generating method and system assisted by heat energy wind generation |
-
2009
- 2009-12-30 CN CN200920352292XU patent/CN201621007U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299676A (en) * | 2011-04-26 | 2011-12-28 | 郝玉山 | Speed-regulation synchronous motor assembling unit |
| CN102299676B (en) * | 2011-04-26 | 2014-04-02 | 郝玉山 | Speed-regulation synchronous motor assembling unit |
| CN103546081A (en) * | 2013-10-24 | 2014-01-29 | 陈作平 | Power generation system of marine main engine |
| CN103546081B (en) * | 2013-10-24 | 2016-03-16 | 陈作平 | Power generation system of marine main engine |
| CN105649883A (en) * | 2016-03-11 | 2016-06-08 | 广州华新科实业有限公司 | Wind power coupling balanced power generating method and system assisted by heat energy wind generation |
| CN105649883B (en) * | 2016-03-11 | 2019-06-21 | 广州华新科实业有限公司 | Thermal energy makes the wind-force coupling homeostasis electricity-generating method and system of wind auxiliary |
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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: GUODIAN UNITED POWER TECHNOLOGY (CHIFENG) CO., LTD. Assignor: Guodian United Power Technology Co., Ltd. Contract record no.: 2011990000151 Denomination of utility model: Direct-current excitation synchronous wind generating set Granted publication date: 20101103 License type: Exclusive License Record date: 20110315 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101103 |
|
| CX01 | Expiry of patent term |