CN201739090U - Offshore wind farm 3MW permanent magnet direct drive wind power generation system - Google Patents
Offshore wind farm 3MW permanent magnet direct drive wind power generation system Download PDFInfo
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- CN201739090U CN201739090U CN2010202671629U CN201020267162U CN201739090U CN 201739090 U CN201739090 U CN 201739090U CN 2010202671629 U CN2010202671629 U CN 2010202671629U CN 201020267162 U CN201020267162 U CN 201020267162U CN 201739090 U CN201739090 U CN 201739090U
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- permanent magnet
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- magnet direct
- voltage inverter
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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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- 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
- Y02E10/76—Power conversion electric or electronic aspects
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- Control Of Eletrric Generators (AREA)
Abstract
The utility model relates to an offshore wind farm 3MW permanent magnet direct drive wind power generation system, which comprises an offshore power generation subsystem and an overland power converter subsystem, wherein the offshore power generation subsystem comprises a master controller, a step-up transformer and a rectifier, the overland power converter subsystem comprises a high-voltage inverter and a larger power grid, the offshore power generation subsystem also comprises a wind wheel, a permanent magnet direct drive power generator and a DC local power grid, the overland power converter subsystem also comprises a high-voltage inverter, the master controller is respectively connected with he wind wheel, the permanent magnet direct drive power generator, the step-up transformer, the rectifier, the DC local power grid and the high-voltage inverter, the wind wheel, the permanent magnet direct drive power generator, the step-up transformer, the rectifier and the DC local power grid are sequentially connected, the DC local power grid is connected with the high-voltage inverter, and the high-voltage inverter is connected with the large power grid. Compared with the prior art, the utility model has the advantages of high reliability, low cost and the like.
Description
Technical field
The utility model relates to a kind of wind-power generating system, especially relates to a kind of coastal waters wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system.
Background technique
Wind energy more and more is subjected to the attention of countries in the world as a kind of renewable energy sources of cleaning.Its amount of accumulateing is bigger, and the wind energy in the whole world is about 2.74 * 10
9MW, wherein available wind energy is 2 * 10
7MW, also bigger 10 times than the water energy total amount that can develop on the earth, along with development of global economy, wind energy market also develops rapidly.As shown in Figure 1, existing offshore wind power system generally comprises master controller, boosting transformer, rectifier, wind wheel, the permanent magnet direct-drive generator, exchange local power net, inverter, big electrical network, master controller respectively with boosting transformer, rectifier, wind wheel, the permanent magnet direct-drive generator, inverter connects, wind wheel, the permanent magnet direct-drive generator, rectifier, inverter, boosting transformer, exchange local power net, big electrical network connects successively, there is following defective in this power generation system: reliability is not high, marine parts are many, marine interchange local power net more complicated, probability of malfunction is than higher, equipment investment and operating cost height.
Summary of the invention
The purpose of this utility model is exactly that a kind of reliability height, coastal waters wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system that cost is low are provided in order to overcome the defective that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of coastal waters wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system, comprise marine power generation sub-system, land electric energy unsteady flow subtense angle, described marine power generation sub-system comprises master controller, boosting transformer, rectifier, described land electric energy unsteady flow subtense angle comprises high-voltage inverter and big electrical network, it is characterized in that, described marine power generation sub-system also comprises wind wheel, the permanent magnet direct-drive generator, the direct current local power net, described land electric energy unsteady flow subtense angle also comprises high-voltage inverter, described master controller respectively with wind wheel, the permanent magnet direct-drive generator, boosting transformer, rectifier, the direct current local power net, high-voltage inverter connects, described wind wheel, the permanent magnet direct-drive generator, boosting transformer, rectifier, the direct current local power net connects successively, described direct current local power net is connected with high-voltage inverter, and described high-voltage inverter is connected with big electrical network.
Described direct current local power net is connected with high-voltage inverter by high voltage direct current cable.
The diameter of described wind wheel is 90m.
The power of described permanent magnet direct-drive generator is 3000KW.
Described high-voltage inverter is a three-level inverter.
Compared with prior art, the utlity model has the reliability height, marine parts are few, do not need to change large component in lifetime; And the direct current local power net that makes offshore wind turbine becomes simpler, reliable, reduces probability of malfunction greatly.Can reduce equipment investment and operating cost about 15～25%.
Description of drawings
Fig. 1 is the structural representation of existing power generation system;
Fig. 2 is a structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 2, a kind of coastal waters wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system, comprise marine power generation sub-system 2, land electric energy unsteady flow subtense angle 1, described marine power generation sub-system 2 comprises master controller 26, boosting transformer 23, rectifier 24, wind wheel 21, permanent magnet direct-drive generator 22, direct current local power net 25, described land electric energy unsteady flow subtense angle 1 comprises big electrical network 12, high-voltage inverter 11, described master controller 26 respectively with wind wheel 21, permanent magnet direct-drive generator 22, boosting transformer 23, rectifier 24, direct current local power net 25, high-voltage inverter 11 connects, described wind wheel 21, permanent magnet direct-drive generator 22, boosting transformer 23, rectifier 24, direct current local power net 25 connects successively, described direct current local power net 25 is connected with high-voltage inverter 11, and described high-voltage inverter 11 is connected with big electrical network 12.
Each parameters of operating part of power generation system is as follows:
Wind wheel 21 diameters: 90m;
The number of blade: 3 blades;
Blade material: order core composite material;
Incision wind speed: 3m/s;
Rated wind speed: 12m/s;
Work wind speed range: 3m/s～25m/s;
Cut-out wind speed: 25m/s;
Anti-strong wind ability: greater than 65m/s
Swept area: 5024m
2
Wind energy utilization 〉=0.45;
Mode of speed regulation: become slurry and regulate;
Pylon height: cylindrical shape 70m.
Permanent magnet direct-drive generator 22 patterns: rare earth permanent magnet directly drives synchronous generator;
Rated power: 3000kW;
Peak output: 2500KVA;
Rated speed: 16r/min;
Working speed scope: 10-16r/min;
Motor highest frequency: 16Hz;
Motor output voltage: line voltage 650VAC-900VAC;
Generator efficiency: 〉=0.98.
Boosting transformer 23:3600KVA/35KV;
High-voltage inverter 11:35KV/3600KW.
Technical characterstic of the present invention:
(1) permanent magnet direct-drive generator 22 is a hollow shaft, and the attendant can enter impeller boss by hollow shaft from the cabin during shutdown, provides convenience to the maintenance of wind wheel inner body.
(2) permanent magnet direct-drive generator 22 adopts continuous winding, turn-to-turn does not have joint, and every phase winding can not interrupt because wiring point is arranged, the manufacturing deficiency of having avoided winding to connect, guarantee the contactless impedance of high quality of copper cash insulation, avoided the corrosion of susceptibility-to-corrosion material and environment.
(3) permanent magnet direct-drive generator 22 adopts special fractional-slot, has significantly reduced starting torque, has reduced harmonic wave and tooth magnetic harmonic wave.Magnetic Circuit Design has guaranteed very high power factor, reaches more than 0.99.
(4) high-voltage inverter 11 adopts three-level inverter, full power inversion online.The power factor of unit can be adjusted, and is generally 1 when dispatching from the factory.
(5) low voltage ride-through capability is arranged, (as short circuit) wind-force unit can keep being connected with electrical network and reached for 3 seconds if electrical network breaks down, and can make suitable support to line voltage by input current.
(6) when start-up routine moves, wind energy conversion system is connected with electrical network with zero current condition, and regulatable mode runs to normal power state.
(7) marine power generation sub-system 2 adopts the special anticorrosive measure identical with offshore drilling platforms, guarantees that unit is not corroded in lifetime.
(9) wind wheel 21 adopts the blade of making from the composite material with reel, foamed plastics, reinforced plastic glass fibre formation that grinds, and fatigue resistance is higher than the carbon fiber composite blade of present employing.
(10) marine power generation sub-system 2 adopts the sealing cabin, and seal approach has been taked in the inside of wind-powered electricity generation unit, and the air in the air cooling system of generator and all component that need dispel the heat is realized heat exchange by recirculation, avoids entering of ambient air.Simultaneously in cabin and tower tube, dehumidifier has been installed.
Permanent magnet direct-drive generator 22 output currents insert the input end of boosting transformer 23, permanent magnet direct-drive generator 22 output voltages are 690V, rise to 35KV or 110KV interchange (requiring to determine) by boosting transformer 23 earlier according to local electrical network, behind rectifier 24, incorporate 35KV or 110KV output current into direct current local power net 25 then, be transported on the seashore through the seabed high voltage direct current cable by direct current local power net 25, be interchange by high-voltage inverter unsteady flow 11 again after the disembarkation, use for local electrical network, perhaps boost to 220KV-800KV once more, can be transported to thousands of miles away, reallocate to load by the big electrical network of country.
Direct current is incorporated into the power networks and large-scale power electronic equipment inverter can be transferred to the land from the sea.This type reliability height, marine parts are few, do not need to change large component in lifetime.And the Local Area Network that makes offshore wind turbine becomes simpler, reliable, reduces probability of malfunction greatly.Compare with traditional approach and can reduce equipment investment and operating cost about 15～25%,
In addition, permanent magnet direct-drive direct current grid type wind-power generating system can reach highly reliable, purpose cheaply by land equally.Direct current transportation is the developing direction of large capacity transmission from now on.According to the national grid assessment, the cost of direct current long distance power transmission is lower from the cost of northwest fortune coal power generation than build thermal power plant in coastal locality.
In the direct current grid-connected system, permanent magnet direct-drive direct current grid type blower fan need not joined inverter, and the mechanism that is incorporated into the power networks is simple and reliable, and the tenability of pair intelligent grid is arranged again, is the Future Development direction certainly.
Claims (5)
1. coastal waters wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system, comprise marine power generation sub-system, land electric energy unsteady flow subtense angle, described marine power generation sub-system comprises master controller, boosting transformer, rectifier, described land electric energy unsteady flow subtense angle comprises high-voltage inverter and big electrical network, it is characterized in that, described marine power generation sub-system also comprises wind wheel, the permanent magnet direct-drive generator, the direct current local power net, described land electric energy unsteady flow subtense angle also comprises high-voltage inverter, described master controller respectively with wind wheel, the permanent magnet direct-drive generator, boosting transformer, rectifier, the direct current local power net, high-voltage inverter connects, described wind wheel, the permanent magnet direct-drive generator, boosting transformer, rectifier, the direct current local power net connects successively, described direct current local power net is connected with high-voltage inverter, and described high-voltage inverter is connected with big electrical network.
2. a kind of coastal waters according to claim 1 wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system is characterized in that described direct current local power net is connected with high-voltage inverter by high voltage direct current cable.
3. a kind of coastal waters according to claim 1 wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system is characterized in that the diameter of described wind wheel is 90m.
4. a kind of coastal waters according to claim 1 wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system is characterized in that the power of described permanent magnet direct-drive generator is 3000KW.
5. a kind of coastal waters according to claim 1 wind energy turbine set 3MW permanent magnet direct-drive wind-power generating system is characterized in that described high-voltage inverter is a three-level inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202671629U CN201739090U (en) | 2010-07-22 | 2010-07-22 | Offshore wind farm 3MW permanent magnet direct drive wind power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202671629U CN201739090U (en) | 2010-07-22 | 2010-07-22 | Offshore wind farm 3MW permanent magnet direct drive wind power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN201739090U true CN201739090U (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202671629U Expired - Fee Related CN201739090U (en) | 2010-07-22 | 2010-07-22 | Offshore wind farm 3MW permanent magnet direct drive wind power generation system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891001A (en) * | 2012-09-11 | 2013-01-23 | 沈阳昊诚电气股份有限公司 | Three-phase transformer system and power grid with same |
| CN103050994A (en) * | 2012-12-31 | 2013-04-17 | 曲阜师范大学 | Scattered rectifying and centralized inverting wind power generation system |
| CN103337878A (en) * | 2013-07-22 | 2013-10-02 | 湘电风能有限公司 | Control method for low-voltage ride through of direct-drive electric excitation type wind turbine generator |
| CN103580064A (en) * | 2013-11-20 | 2014-02-12 | 上海电机学院 | Wind generating set network access method and system |
| CN103701148A (en) * | 2013-12-16 | 2014-04-02 | 南方电网科学研究院有限责任公司 | Starting control method for accessing VSC-MTDC system of large wind farm |
| CN109787534A (en) * | 2019-02-28 | 2019-05-21 | 北京百度网讯科技有限公司 | A kind of frequency converter and frequency-converting control device powered using high voltage direct current |
-
2010
- 2010-07-22 CN CN2010202671629U patent/CN201739090U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891001A (en) * | 2012-09-11 | 2013-01-23 | 沈阳昊诚电气股份有限公司 | Three-phase transformer system and power grid with same |
| CN102891001B (en) * | 2012-09-11 | 2016-03-30 | 沈阳昊诚电气有限公司 | Three-phase transformer system and there is its electrical network |
| CN103050994A (en) * | 2012-12-31 | 2013-04-17 | 曲阜师范大学 | Scattered rectifying and centralized inverting wind power generation system |
| CN103337878A (en) * | 2013-07-22 | 2013-10-02 | 湘电风能有限公司 | Control method for low-voltage ride through of direct-drive electric excitation type wind turbine generator |
| CN103337878B (en) * | 2013-07-22 | 2015-04-22 | 湘电风能有限公司 | Control method for low-voltage ride through of direct-drive electric excitation type wind turbine generator |
| CN103580064A (en) * | 2013-11-20 | 2014-02-12 | 上海电机学院 | Wind generating set network access method and system |
| CN103701148A (en) * | 2013-12-16 | 2014-04-02 | 南方电网科学研究院有限责任公司 | Starting control method for accessing VSC-MTDC system of large wind farm |
| CN109787534A (en) * | 2019-02-28 | 2019-05-21 | 北京百度网讯科技有限公司 | A kind of frequency converter and frequency-converting control device powered using high voltage direct current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20140722 |
|
| EXPY | Termination of patent right or utility model |