CN201943897U - Wind-power electricity-generating equipment with automatic speed-regulating device - Google Patents
Wind-power electricity-generating equipment with automatic speed-regulating device Download PDFInfo
- Publication number
- CN201943897U CN201943897U CN2011200388019U CN201120038801U CN201943897U CN 201943897 U CN201943897 U CN 201943897U CN 2011200388019 U CN2011200388019 U CN 2011200388019U CN 201120038801 U CN201120038801 U CN 201120038801U CN 201943897 U CN201943897 U CN 201943897U
- Authority
- CN
- China
- Prior art keywords
- speed
- wind
- generator
- automatic speed
- variable
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
The utility model discloses wind-power electricity-generating equipment with an automatic speed-regulating device, which comprises an impeller, a main shaft, a speed-increasing gearbox, the automatic speed-regulating device, a generator and a tower frame; the automatic speed-regulating device comprises a variable pump, a quantitative motor, a speed-measuring unit, a control unit and an oil box, wherein the variable pump comprises a hydraulic pump and an electro-hydraulic proportional variable mechanism; an input shaft of the variable pump is rigidly connected with an output shaft of the speed-increasing gearbox, an output shaft of the quantitative motor is rigidly connected with a main shaft of the generator, and the hydraulic pump and the quantitative motor are connected through a hydraulic loop; and the closed-loop control for the whole system of a wind-power generator set is realized by the control unit through the speed-measuring unit and the electro-hydraulic proportional variable mechanism. The rotating speed of the impeller of the wind-power electricity-generating equipment output to the generator can be stably regulated through the automatic speed-regulating device, the generator is driven to operate at a relatively constant speed, and the current having a constant frequency which is consistent with that of an electric network can be obtained without variable-current equipment.
Description
Technical field
The utility model relates to a kind of wind-power generating system, relates in particular to a kind of wind power plant with automatic speed governing device.
Background technique
Wind-power electricity generation is the main form of utilizing of wind energy, and wind power generating set is the electromechanical equipment that wind energy transformation is become electric energy.Because the wind speed maximum value is over time and constantly in fluctuation, and wind power generating set has an inherent characteristic to the conversion of wind energy, promptly each wind speed all corresponding an optimum power receiver rotating speed, produce peak output conversion at this rotating speed.And optimized rotating speed depends on the structural parameter and the geometric properties of wind-driven generator power converter.So wind power generating set is with variable input speed operation, and this input speed mates corresponding wind speed again as far as possible best.No matter be Large-scale Wind Turbines or middle-size and small-size wind power generating set, the electric energy that generator produced finally still will use for the user.The electric current that so just requires power generating equipment and produced must be relative constant frequency and constant voltage form, perhaps adopts various processing modes that Protean current conversion is become constant electric current, realizes being incorporated into the power networks or from network operation.
In order to solve the unstable problem of voltage that wind-driven generator produces, main technical scheme is to adopt step-up gear-dual-feeding motor system and directly drive-frequency convertor system on the basis of pitch-variable system at present.The feather speed control system can be come moment of torsion and the power of corrective action on wind wheel blade by regulating the angle that facings the wind of blade.Present feather speed-regulating function can only be adjusted under certain conditions, but changeable wind speed occurs at any time, makes the variation of feather speed governing relative speed of wind to lag behind.Step-up gear-dual-feeding motor system total efficiency is not high, and average Mean time to failure is short, and the frequency instability can not guarantee electric normal quality.The higher harmonics load on the inevitable again electrical network of frequency variator and the generation of significant wattless power, and the frequency variator cost is higher relatively, volume is bigger than normal, give produce, installation, maintenance brings some inconvenience.
For Large-scale Wind Turbines, it mainly is to be installed on large-scale wind field to realize high-power generating electricity by way of merging two or more grid systems; For middle-size and small-size wind-driven generator, its staple market is to liking unique user, and main purpose is to satisfy single family or island user's need for electricity, and the inexpensive clean energy is provided.
At present, the wind power generating set price comparison on the market is expensive, complex structure, and particularly current transformer cost wherein is higher, has suppressed the development of wind power plant to a certain extent and popularizes.It is necessary to study a kind of simple and compact for structure, performance good, cost is low, and the arrangements for speed regulation of wind power plant that can automatic speed regulation.Therefore, research and develop a kind of wind energy utilization height, system dynamic characteristic is good, can realize automatic speed regulation, and complete machine structure is simple, volume is less, the arrangements for speed regulation of lower-cost wind power plant, has market potential prospect and development space.
The model utility content
At above-mentioned prior art, the utility model provides a kind of wind power plant with automatic speed governing device, can realize stable regulation by the rotating speed that automatic speed governing device makes the impeller of wind power plant output to generator, drive the relative constant speed running of generator, and do not need just can access the constant and consistent electric current of frequency with mains frequency by convertor equipment.The wind power plant that the utlity model has automatic speed governing device not only can reduce the used component of wind power plant, reduce the complete machine cost greatly, improve unit reliability, and volume is little, controls easyly, and dynamic performance is good, maintainable good, arrangements for speed regulation wherein can also be applicable to middle-size and small-size power generating equipment as the arrangements for speed regulation of large-scale wind power generator incorporated in power network group, can adapt to different wind power plants preferably.
In order to solve the problems of the technologies described above, to the utlity model has the technological scheme that the wind power plant of automatic speed governing device is achieved and be: comprise impeller, main shaft, step-up gear, automatic speed governing device, generator and pylon; Described automatic speed governing device comprises variable displacement pump, fixed displacement motor, the unit that tests the speed, control unit and fuel tank, and described variable displacement pump is made of an oil hydraulic pump and an electrohydraulic proportion variable mechanism; Described automatic speed governing device is installed on the main shaft between described step-up gear and the generator, the output shaft of the described step-up gear of input shaft rigid joint of described variable displacement pump, the main shaft of the output shaft rigid joint generator of described fixed displacement motor, connect by oil hydraulic circuit between described oil hydraulic pump and the fixed displacement motor, be provided with safety valve and one-way valve in the described oil hydraulic circuit; Described control unit is realized the closed loop control of wind power generating set machine system by test the speed unit and electrohydraulic proportion variable mechanism.
Compared with prior art, the beneficial effects of the utility model are:
(1) because the control unit in the utility model is the electrohydraulic proportion variable mechanism realization wind generating unit complete machine running state closed loop control by test the speed unit and variable displacement pump, thereby can the raising system reliability of control and the simplicity of operation, improve electric energy stability, the electric current that obtains can directly be incorporated into the power networks or use for the user;
(2) the utility model power generating equipment can convert the wind energy that changes to stable electric energy, no matter be that large, medium and small type wind power plant does not all need current transformer, from the electric current of generator output is exactly metastable constant frequency electric current, owing to be to utilize variable displacement pump 41-fixed displacement motor 42 as the speed governing performance element, its simple in structure and easy realization is controlled automatically, dynamic performance is good, reliability is high, cost is low, can alleviate user's economic burden, give full play to the advantage benefit of wind-power electricity generation, realize the high efficiency conversion of primary energy to secondary energy.
(3) hydraulic element in the utility model can play buffer function, the mean lifetime that prolong mean time to failure, prolongs wind power plant.
Description of drawings
Fig. 1 is the scheme of installation that the utlity model has the wind power plant of automatic speed governing device;
Fig. 2 is the controlling party block diagram that the utility model wind power plant is realized automatic speed regulation;
Fig. 3 is the structural representation with wind power plant of automatic speed governing device.
Among the figure:
1---impeller 2---main shaft 3---step-up gear
40---automatic speed governing device 5---generator 6---pylons
41---variable displacement pump 411---oil hydraulic pump 412---electrohydraulic proportion variable mechanisms
42---fixed displacement motor 43---unit 44 tests the speed---control units
45---safety valve 46---one-way valve 47---fuel tanks
Embodiment
Below in conjunction with embodiment the utility model is done to describe in further detail.
As shown in Figure 1, a kind of wind power plant with automatic speed governing device of the utility model comprises impeller 1, main shaft 2, step-up gear 3, automatic speed governing device 40, generator 5 and pylon 6; Described automatic speed governing device 40 comprises variable displacement pump 41, fixed displacement motor 42, the unit 43 that tests the speed, control unit 44 and fuel tank 48, and described variable displacement pump 41 is made of an oil hydraulic pump 411 and an electrohydraulic proportion variable mechanism 412, and the described unit 43 that tests the speed is speed probe; Described automatic speed governing device 40 is installed on the main shaft 2 between described step-up gear 3 and the generator 5, the output shaft of the described step-up gear 3 of input shaft rigid joint of described variable displacement pump 41, the main shaft of the output shaft rigid joint generator 5 of described fixed displacement motor 42, connect by oil hydraulic circuit between described oil hydraulic pump 411 and the fixed displacement motor 42, consider the variable displacement pump 41 in the automatic speed governing device and the normal operation of fixed displacement motor 42, be provided with safety valve 45 and one-way valve 46 in the described oil hydraulic circuit; Described control unit 44 is realized the closed loop control of wind power generating set machine system by test the speed unit 43 and electrohydraulic proportion variable mechanism 412.Because high-pressure work liquid does not need to consider the location problem of conveyance conduit in closely, and not strict demand of the position between variable displacement pump 41 and the fixed displacement motor 42, only need the concentricity problem between consideration step-up gear 3 and variable displacement pump 41, fixed displacement motor 42 and generator 5 axle center; So also need not consider step-up gear 3 output shafts and generator 5 input shafts to heart problem, wind power plant of the present utility model then is installed two kinds of placement schemes can be arranged, as shown in Figure 1, automatic speed governing device 40 and original power generating equipment are placed directly in the cabin on pylon 6 tops, can shorten the conveyance conduit of high-pressure work liquid like this, be output current on pylon 6 tops.Certainly, also can be by prolonging the pipeline of oil hydraulic circuit, fixed displacement motor 42 and power generating equipment are moved to ground, obtain electric current in the ground handling zone, the physical dimension and the weight of wind power plant can have been alleviated so to a great extent, when reducing the manufacturing difficulty, reduced the manufacture cost of equipment greatly.
The process of utilizing above-mentioned wind power plant with automatic speed governing device to generate electricity is: in the wind power plant work, impeller 1 wind-engaging carries rotary driving, wind energy is converted to the mechanical energy of impeller 1 rotation, impeller 1 connects step-up gear 3 by main shaft 2, drive variable displacement pump 41 work by step-up gear 3, thereby convert mechanical energy to the hydraulic pressure energy, variable displacement pump 41 is transported to fixed displacement motor 42 with pressurized working liquid body by oil hydraulic circuit, fixed displacement motor 42 can convert hydraulic pressure to kinetic energy, and driving generator 5 generatings, convert kinetic energy to electric energy, realize final transformation of energy, promptly wind energy is converted to electric energy; In the above-mentioned power generation process, the output speed of test the speed unit 43 monitoring in real time and feedback fixed displacement motor 42 in the automatic speed governing device 40, by control unit 44 control electrohydraulic proportion variable mechanisms 412 corresponding actions, adjust the position of the variable piston of variable displacement pump 41, and then the output flow of Moderator Variable pump 41, make oil hydraulic pump 411 under the effect that speed change wind carries, obtain stable output flow, drive fixed displacement motor 42 and stablize the constant speed running, make generator 5 constant operations, thereby obtain the constant electric current of frequency.If the overpressure in the working procedure of power generation system in the oil hydraulic circuit has surpassed the Maximum operating pressure that safety valve 46 sets, safety valve 46 automatic overflows then are to guarantee the safety of each equipment in the oil hydraulic circuit.
In the utility model, because control unit 44 is to realize the closed loop control of wind power generating set machine system by test the speed unit 43 and electrohydraulic proportion variable mechanism 412, thereby the reliability of system's control and the simplicity of operation have been improved, improve current stability, the electric current that finally obtains can directly be incorporated into the power networks or use for electric consumer.
Through simulating, verifying, the utility model dynamic performance is good, speed controlling is respond well, control simple in structure is convenient, reliability and interchangeability are good, guarantee under the effect that speed change wind carries, to obtain metastable motor speed effectively, realized that generator efficiently moves, also improved the stability of electric current simultaneously.
Although in conjunction with figure the utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong within the protection of the present utility model.
Claims (2)
1. the wind power plant with automatic speed governing device comprises impeller (1), main shaft (2), step-up gear (3), automatic speed governing device (40), generator (5) and pylon (6); It is characterized in that:
Described automatic speed governing device (40) comprises variable displacement pump (41), fixed displacement motor (42), the unit that tests the speed (43), control unit (44) and fuel tank (48), and described variable displacement pump (41) is made of an oil hydraulic pump (411) and an electrohydraulic proportion variable mechanism (412);
Described automatic speed governing device (40) is installed on the main shaft (2) between described step-up gear (3) and the generator (5), the output shaft of the described step-up gear of input shaft rigid joint (3) of described variable displacement pump (41), the main shaft of the output shaft rigid joint generator (5) of described fixed displacement motor (42), connect by oil hydraulic circuit between described oil hydraulic pump (411) and the fixed displacement motor (42), be provided with safety valve (45) and one-way valve (46) in the described oil hydraulic circuit;
Described control unit (44) is realized the closed loop control of wind power generating set machine system by the unit that tests the speed (43) and electrohydraulic proportion variable mechanism (412).
2. according to the described wind power plant with automatic speed governing device of claim 1, it is characterized in that: the described unit that tests the speed (43) is a speed probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200388019U CN201943897U (en) | 2011-02-15 | 2011-02-15 | Wind-power electricity-generating equipment with automatic speed-regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200388019U CN201943897U (en) | 2011-02-15 | 2011-02-15 | Wind-power electricity-generating equipment with automatic speed-regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201943897U true CN201943897U (en) | 2011-08-24 |
Family
ID=44471243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200388019U Expired - Fee Related CN201943897U (en) | 2011-02-15 | 2011-02-15 | Wind-power electricity-generating equipment with automatic speed-regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201943897U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102634A (en) * | 2011-02-15 | 2011-06-22 | 天津大学 | Wind power generation equipment with automatic speed control device and automatic speed control method thereof |
| CN102384119A (en) * | 2011-08-31 | 2012-03-21 | 中联重科股份有限公司 | Electro-hydraulic proportional valve speed regulation control method, device and system and engineering mechanical equipment |
| CN102506017A (en) * | 2011-11-22 | 2012-06-20 | 江麓机电科技有限公司 | Static-pressure differential speed regulation-type main transmission in wind generating set |
| CN103557121A (en) * | 2013-11-07 | 2014-02-05 | 青岛经济技术开发区泰合海浪能研究中心 | Hydraulic constant-speed generating system of multilayer shunting type vertical axial fan |
| CN104747378A (en) * | 2015-02-09 | 2015-07-01 | 浙江大学 | Double electrical hydraulic wind power generation system |
| CN114671261A (en) * | 2022-03-15 | 2022-06-28 | 交通运输部水运科学研究所 | Full-hydraulic spiral bin cleaning system for grain silo and automatic bin cleaning control method |
-
2011
- 2011-02-15 CN CN2011200388019U patent/CN201943897U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102634A (en) * | 2011-02-15 | 2011-06-22 | 天津大学 | Wind power generation equipment with automatic speed control device and automatic speed control method thereof |
| CN102384119A (en) * | 2011-08-31 | 2012-03-21 | 中联重科股份有限公司 | Electro-hydraulic proportional valve speed regulation control method, device and system and engineering mechanical equipment |
| CN102384119B (en) * | 2011-08-31 | 2013-01-16 | 中联重科股份有限公司 | Electro-hydraulic proportional valve speed regulation control method, device and system and engineering mechanical equipment |
| CN102506017A (en) * | 2011-11-22 | 2012-06-20 | 江麓机电科技有限公司 | Static-pressure differential speed regulation-type main transmission in wind generating set |
| CN103557121A (en) * | 2013-11-07 | 2014-02-05 | 青岛经济技术开发区泰合海浪能研究中心 | Hydraulic constant-speed generating system of multilayer shunting type vertical axial fan |
| CN103557121B (en) * | 2013-11-07 | 2016-03-02 | 青岛经济技术开发区泰合海浪能研究中心 | A kind of multilayer flow deviding type vertical shaft fan hydraulic pressure constant speed power generation system |
| CN104747378A (en) * | 2015-02-09 | 2015-07-01 | 浙江大学 | Double electrical hydraulic wind power generation system |
| CN114671261A (en) * | 2022-03-15 | 2022-06-28 | 交通运输部水运科学研究所 | Full-hydraulic spiral bin cleaning system for grain silo and automatic bin cleaning control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102102634A (en) | Wind power generation equipment with automatic speed control device and automatic speed control method thereof | |
| CN201943897U (en) | Wind-power electricity-generating equipment with automatic speed-regulating device | |
| CN103779873B (en) | A kind of hydraulic low voltage traversing control method of wind generator set | |
| CN105356490B (en) | A kind of active control method for coordinating of DC parallel type wind power plant | |
| CN104405590A (en) | Impeller-directly-driven wind-driven generator | |
| CN111882131A (en) | Variable-speed seawater pumping and storage power station capacity optimization method based on dual-working-condition optimal efficiency tracking | |
| WO2024152815A1 (en) | Wind/solar/hydro/storage hybrid system | |
| CN113266529A (en) | Wind turbine generator combining water pumping energy storage and tower barrel resistance adding and working method thereof | |
| CN204532702U (en) | A kind of wind generating unit utilizing compressed-air energy storage | |
| CN102748238B (en) | Wind-powered electricity generation energy conversion system with redundancy energy storage and application model thereof and controlling method | |
| Akbari et al. | An approach in torque control of hydraulic wind turbine powertrains | |
| CN100376065C (en) | Wind power generating system based on direct current generator | |
| CN101782042B (en) | Hydraulic control frequency stabilized wind power generation apparatus | |
| CN201486765U (en) | Wind power generating device | |
| CN102157962A (en) | Wind power generator unit based complementary power generating system and grid combined debugging method | |
| CN201621012U (en) | Wind power generation device | |
| CN201802563U (en) | Full-power squirrel-cage set wind power generation apparatus | |
| CN203009171U (en) | Low wind speed wind generating set of intelligent superpower hydraulic transmission power | |
| CN202971059U (en) | Hydraulically-driven wind power generation system | |
| CN102403944A (en) | Variable speed constant frequency method for wind power generation and device thereof | |
| Wang et al. | Variable coefficient droop control strategy for optimal participation of wind farm in primary frequency regulation considering wake superposition effect | |
| CN202326018U (en) | Stable power-generating system based on conversion of wind energy and water energy | |
| CN204226115U (en) | A kind of impeller Direct driver wind-driven generator | |
| CN203604121U (en) | Multilayer distributary type hydraulic constant speed power generation system of vertical axis wind turbine | |
| CN200987072Y (en) | Wind power generation plant based on DC electric generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20130215 |