CN102359434B - Yaw system of marine wind generator system and operation method thereof - Google Patents

Yaw system of marine wind generator system and operation method thereof Download PDF

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Publication number
CN102359434B
CN102359434B CN2011102806752A CN201110280675A CN102359434B CN 102359434 B CN102359434 B CN 102359434B CN 2011102806752 A CN2011102806752 A CN 2011102806752A CN 201110280675 A CN201110280675 A CN 201110280675A CN 102359434 B CN102359434 B CN 102359434B
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China
Prior art keywords
driftage
yaw
course
yawer
frequency variator
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CN2011102806752A
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Chinese (zh)
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CN102359434A (en
Inventor
熊维军
凡增辉
许雄伟
谷小辉
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南车株洲电力机车研究所有限公司
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Priority to CN2011102806752A priority Critical patent/CN102359434B/en
Publication of CN102359434A publication Critical patent/CN102359434A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention provides a yaw system of a marine wind generator system and an operation method thereof. The yaw system comprises a wind direction sensor, a yaw controller, yaw frequency converters, yaw speed reduction motors, a yaw revolving support and a yaw brake. The yaw system is characterized in that a distributed yaw frequency converter structure is adopted, i.e., one yaw controller can control multiple yaw frequency converters, and each yaw frequency converter can drive more than one yaw speed reduction motors so as to realize yaw movement; and the yaw controller can obtain a control signal from a wind speed anemoscope. The system provided by the invention is of the distributed yaw frequency converter structure, one yaw controller can control multiple yaw frequency converters, and each yaw frequency converter can drive more than one yaw speed reduction motors so as to realize yaw movement, thus, when partial wind generator systems break down, only the failed yaw frequency converters are closed down while the wind generator systems can continually generate electricity in a yaw failure mode according to the control, so that the utilization ratio of the yaw system can be improved.

Description

A kind of yaw system of offshore wind farm unit and operation method thereof
Technical field
The present invention relates to yawing rotation system and the operation method thereof of a kind of modular construction and operation method of offshore wind farm unit, particularly offshore wind farm unit.
Technical background
Offshore wind turbine may break down because of multiple reason in running, and present wind-powered electricity generation unit generally is that stoppage in transit wind-powered electricity generation unit is restarted automatically when fault is arranged, if also have fault then the wind-powered electricity generation unit outage overhauls when self check; But the offshore wind farm unit is not only away from bank but also the high-altitude about 80 meters, maintenance and maintenance are all difficult especially, maintenance cost improves than land maintenance cost, be subjected to the changeable reason of marine weather, the maintainer arrives that risk height, difficulty that the wind-powered electricity generation unit patrols and examines are big, in a single day the wind-powered electricity generation unit breaks down, service cycle lengthens, and will cause the availability of wind-powered electricity generation unit to reduce.So the reliability to the wind-powered electricity generation unit is had higher requirement.
The wind-powered electricity generation unit parts major part that generally there was a mechanical failure has yaw system, the break of yaw system, and the hydraulic unit of yaw system, wind wheel breaks etc. are most of with the relevant parts of transmission.So design a kind of special yaw system the availability of offshore wind farm unit there is very important practical sense (as the wind-powered electricity generation unit when fault is arranged, how to guarantee that the wind-powered electricity generation unit can be under the state of safety, the wind-powered electricity generation unit is with fault diagnosis model, can downrating).
In traditional yaw system of wind-powered electricity generation unit, generally comprise wind transducer, yawer, the driftage frequency variator, the driftage reducing motor, compositions such as off-course brake are supported in the driftage revolution.And generally be that a driftage frequency variator drives several driftage reducing motors and is synchronized with the movement; At the driftage frequency variator fault is arranged so, when perhaps a driftage reducing motor breaks down, then can not realize the function of going off course, control system can require the whole wind group of motors to shut down so, so just reduces the availability of wind-powered electricity generation unit.ZL200710191682.9 discloses a kind of driftage control system with PID and fuzzy control combination; ZL200810023185.2 discloses a kind of driftage structure that drives driftage revolution support with speed reducer; ZL200710059567.6 discloses a kind of a kind of yaw device that drives yawing rotation with halbach magnet structure magneto; But above-mentioned these patents all do not have to consider, when how parts in yaw system go wrong (as the driftage that contains yaw motor drives or the damage of driftage frequency variator), how the wind-powered electricity generation unit continues to put into operation, improves the availability of offshore wind farm unit.
Summary of the invention
The object of the present invention is to provide a kind of offshore wind farm unit, particularly yaw system and operation method thereof on the offshore wind farm unit, this yaw system can be when partial fault appears in the wind-powered electricity generation unit, and the wind-powered electricity generation unit still can continue generating according to control under the driftage fault mode, improve availability.
Technological scheme of the present invention is achieved through the following technical solutions: a kind of yaw system of offshore wind farm unit, comprise wind transducer, yawer, the driftage frequency variator, the driftage reducing motor, the driftage revolution is supported, off-course brake, adopt distributed driftage frequency changer, control a plurality of driftage frequency variators by a yawer, drive one or more driftage reducing motors by each driftage frequency variator again and realize yawing rotation; Yawer is by the controlled signal of anemoclinograph.
As a further improvement on the present invention, described driftage reducing motor and driftage pivoting support mesh by gear, the driftage revolution is supported and the driftage brake disc is connected and fixed by bolt and tower tube upper flange, off-course brake and off-course brake are adjusted piece and are fixed by bolt and main frame, and off-course brake and driftage brake disc dish form a pair of friction pair.
As a further improvement on the present invention, the hydraulic station of off-course brake produces driftage frictional force by hydraulic tube for off-course brake provides positive pressure.
A kind of operation method of the yaw system according to above-mentioned offshore wind farm unit adopts a yawer to control a plurality of driftage frequency variators, drives the operation method that one or more driftage reducing motors are realized yawing rotation by each driftage frequency variator again; Yawer obtains signal from anemoclinograph, compares if any deviation with the value of inner setting, and then yawer then sends signal to the driftage frequency variator, and the driftage frequency variator of different capacity grade drives one to a plurality of driftage reducing motors.
As run into and have the driftage frequency variator to damage, then yawer 1 can obtain the signal that a driftage frequency variator damages, yawer judges it is that fault has taken place which driftage frequency variator so, the then yawer operation of going off course again of trying, as the enough yawers of power of the frequency variator feedback of going off course are set rating value, the operation of then can going off course, just execution driftage order, correct yaw error, the wind-powered electricity generation unit then continues generating.
If there is the driftage reducing motor to damage, yawer can find the to go off course power of frequency variator exceeds normal range (NR), and at this moment yawer judges that according to anemoclinograph it still is that wind speed exceeds normal range (NR) that the driftage reducing motor breaks down.The power of frequency variator go off course in this way greater than normal range value, the output pinion of reducing motor of then thinking to go off course breaks down, if the power of driftage frequency variator is less than normal range value, problem has appearred in the motor of the reducing motor of then thinking to go off course, and then thinks and can continue driftage.
Characteristics of the present invention are: adopt distributed driftage frequency changer, control a plurality of driftage frequency variators by a yawer, drive one or more driftage reducing motors by each driftage frequency variator again and realize yawing rotation, can be when a part of wind-powered electricity generation unit breaks down, only need close down the driftage frequency variator of the part that breaks down, then still can allow the wind-powered electricity generation unit under the driftage fault mode, continue generating according to control, improve availability.And because the offshore wind farm unit is because power is big, the a plurality of driftage frequency variators of placement are satisfied in the space in cabin, and because cost and the frequency variator of frequency variator generally are according to the proportional relation of power level, so an original driftage frequency variator is divided into several little frequency variators, cost does not have to increase substantially.
Description of drawings
Fig. 1 is control structure sketch of the present invention.
Fig. 2 is perspective view of the present invention.
Fig. 3 is partial sectional view of the present invention.
Fig. 4 is hydraulic structure figure of the present invention.
1. yawers among the figure, 2. driftage frequency variator, 3. driftage reducing motor, 4. driftage revolution support, 5. driftage brake disc, 6. off-course brake, 7. off-course brake is adjusted piece, 8. main frame, 9. tower tube upper flange, 10. driftage hydraulic station, 11. wind transducers, 12. hydraulic tubes.
Embodiment:
The present invention is further described below in conjunction with drawings and Examples.
As shown in drawings, the present invention relates to a kind of yaw system of offshore wind farm unit, comprise wind transducer 11, yawer 1, driftage frequency variator 2, driftage reducing motor 3, the driftage revolution supports 4, and off-course brake 6 adopts distributed driftage frequency changer, by a plurality of driftage frequency variators 2 of a yawer 1 control, drive one or more driftage reducing motors 3 by each driftage frequency variator 2 again and realize yawing rotation; Yawer 1 is by wind transducer 11 controlled signals.
As a further improvement on the present invention, described driftage reducing motor 3 and driftage pivoting support 4 mesh by gear, driftage revolution support 4 and driftage brake disc 5 are connected and fixed by bolt and tower tube upper flange 9, it is fixing by bolt and main frame 8 that off-course brake 6 and off-course brake are adjusted piece 7, and off-course brake 6 and driftage brake disc dish 5 form a pair of friction pair.
As a further improvement on the present invention, the hydraulic station 10 of off-course brake produces driftage frictional force by hydraulic tube 12 for off-course brake 6 provides positive pressure.
As a further improvement on the present invention, the quantity of a plurality of driftage frequency variators 2 of yawer 1 control is 2-6.
A kind of operation method of the yaw system according to above-mentioned offshore wind farm unit:
Adopt a plurality of driftage frequency variators 2 of a yawer 1 control, drive the operation method that one or more driftage reducing motors 3 are realized yawing rotation by each driftage frequency variator 2 again; Yawer 1 is from wind transducer 11 controlled signals; Be anemoclinograph from wind transducer 11; The control signal that yawer 1 will obtain from wind transducer 11 and the value of inner setting compare, if any deviation, then 1 of yawer sends signal to driftage frequency variator 2, and the driftage frequency variator of different capacity grade drives one to a plurality of driftage reducing motors 3.
As run into and have driftage frequency variator 2 to damage, then yawer 1 can obtain the signal that a driftage frequency variator 2 damages, yawer 1 judges it is that fault has taken place which driftage frequency variator 2 so, then yawer 1 operation of going off course again of trying, as the enough yawers 1 of the power of frequency variator 2 feedbacks of going off course are set rating value, the operation of then can going off course, just execution driftage order, correct yaw error, the wind-powered electricity generation unit then continues generating.
If there is driftage reducing motor 3 to damage, yawer 1 can find that the power of driftage frequency variator 2 exceeds normal range (NR), and at this moment yawer 1 judges that according to wind transducer 11 it still is that wind speed exceeds normal range (NR) that driftage reducing motor 3 breaks down.The power of frequency variator go off course in this way greater than normal range value, the output pinion of reducing motor 3 of then thinking to go off course breaks down, if the power of driftage frequency variator is less than normal range value, problem has appearred in the motor of the reducing motor 3 of then thinking to go off course, and then thinks and can continue driftage.
Driftage reducing motor 3 is fixed on the main frame 8, and the inner ring of the revolution support 4 of going off course also is fixed on the main frame 8, and the outer ring of driftage revolution support 4 has the output pinion of tooth and driftage reducing motor 3 to mesh.4 outer ring and driftage brake disc 5 and tower tube upper flange bolted on connection are supported in the driftage revolution; Main frame 8 and off-course brake are adjusted piece 7 and are used bolted on connection with off-course brake 6; Off-course brake 6 and driftage brake disc form a pair of friction pair.During driftage, driftage frequency variator 2 drives 3 rotations of driftage reducing motor, driftage reducing motor 3 drives the driftage small gear rotation of oneself, because the output pinion of driftage reducing motor 3 turns round the external tooth engagement of supporting with driftage, the rotation of drive main frame, drive off-course brake 6 rotations and 5 rotations of driftage brake disc together, realize the variation of the relative position between main frame 8 and the tower tube upper flange, realize the realization of driftage function.
During driftage, generally have driftage hydraulic station 10 to provide off-course brake 6 one less pressure, off-course brake 6 and driftage brake disc 5 produce the driftage dampings, have allowed the cabin stable action, and alleviate variation that wind carries to the influence of driftage reducing motor 3.
When not going off course, provide off-course brake 6 one bigger pressure by driftage hydraulic station 10, off-course brake 6 and driftage brake disc 5 produce a stiction, overcome wind and carry disturbance to the cabin.

Claims (9)

1. the yaw system of an offshore wind farm unit, comprise wind transducer, yawer, the driftage frequency variator, the driftage reducing motor, the driftage revolution is supported, off-course brake, it is characterized in that: adopt distributed driftage frequency changer, control a plurality of driftage frequency variators by a yawer, drive one or more driftage reducing motors by each driftage frequency variator again and realize yawing rotation; Yawer is by the controlled signal of anemoclinograph.
2. according to the yaw system of the offshore wind farm unit of claim 1, it is characterized in that: described driftage reducing motor and driftage revolution are supported and are meshed by gear, the driftage revolution is supported and the driftage brake disc is connected and fixed by bolt and tower tube upper flange, off-course brake and off-course brake are adjusted piece and are fixed by bolt and main frame, and off-course brake and driftage brake disc dish form a pair of friction pair.
3. according to the yaw system of the offshore wind farm unit of claim 2, it is characterized in that: the hydraulic station of off-course brake produces driftage frictional force by hydraulic tube for off-course brake provides positive pressure.
4. according to the yaw system of the offshore wind farm unit of claim 3, it is characterized in that: the quantity that yawer is controlled a plurality of driftage frequency variators is 2-6.
5. according to the yaw system of the offshore wind farm unit of claim 3, it is characterized in that: the driftage reducing motor is fixed on the main frame, the inner ring that the driftage revolution is supported also is fixed on the main frame, and there is the output pinion engagement of tooth and driftage reducing motor the outer ring that the driftage revolution is supported.
6. according to the yaw system of the offshore wind farm unit of claim 5, it is characterized in that: the outer ring that the driftage revolution is supported and driftage brake disc and tower tube upper flange bolted on connection; Main frame and off-course brake are adjusted piece and off-course brake bolted on connection; Off-course brake and driftage brake disc form a pair of friction pair.
7. operation method according to the yaw system of the described offshore wind farm unit of claim 1, it is characterized in that: adopt a yawer to control a plurality of driftage frequency variators, drive the operation method that one or more driftage reducing motors are realized yawing rotation by each driftage frequency variator again; Yawer obtains signal from anemoclinograph, compares if any deviation with the value of inner setting, and then yawer then sends signal to the driftage frequency variator, and the driftage frequency variator of different capacity grade drives one to a plurality of driftage reducing motors.
8. according to the yaw system operation method of the described offshore wind farm unit of claim 7, it is characterized in that: as run into and have the driftage frequency variator to damage, then yawer 1 can obtain the signal that a driftage frequency variator damages, yawer judges it is that fault has taken place which driftage frequency variator so, the then yawer operation of going off course again of trying, as the enough yawers of power of the frequency variator feedback of going off course are set rating value, the operation of then can going off course, just carry out the driftage order, correct yaw error, the wind-powered electricity generation unit then continues generating.
9. according to the yaw system operation method of the described offshore wind farm unit of claim 7, it is characterized in that: if there is the driftage reducing motor to damage, yawer can find the to go off course power of frequency variator exceeds normal range (NR), and at this moment yawer judges that according to anemoclinograph it still is that wind speed exceeds normal range (NR) that the driftage reducing motor breaks down; The power of frequency variator go off course in this way greater than normal range value, the output pinion of reducing motor of then thinking to go off course breaks down, if the power of driftage frequency variator is less than normal range value, problem has appearred in the motor of the reducing motor of then thinking to go off course, and then thinks and can continue driftage.
CN2011102806752A 2011-09-21 2011-09-21 Yaw system of marine wind generator system and operation method thereof CN102359434B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215156B2 (en) 2015-05-04 2019-02-26 General Electric Company Autonomous yaw control for a wind turbine

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CN102852717A (en) * 2012-09-12 2013-01-02 江苏中蕴风电科技有限公司 Wind collector for wind concentration power generation of narrow pipe
CN103452756A (en) * 2013-09-12 2013-12-18 太原重工股份有限公司 Yaw system of wind generating set and wind generating set comprising system
CN103775290A (en) * 2013-12-24 2014-05-07 广东明阳风电产业集团有限公司 Yawing supporting structure of wind generating set
JP2018091309A (en) * 2016-12-07 2018-06-14 ナブテスコ株式会社 Windmill drive system and windmill
CN108223265A (en) * 2016-12-12 2018-06-29 北京金风科创风电设备有限公司 Pitch drive device and method
CN110778453A (en) * 2019-11-29 2020-02-11 中国船舶重工集团海装风电股份有限公司 Yaw fault-tolerant control method and equipment for wind generating set and storage medium

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GB9706542D0 (en) * 1997-04-01 1997-05-21 Bennett Peter Wind turbine yaw control and damping system
CN201377388Y (en) * 2009-04-23 2010-01-06 沈阳瑞祥风能设备有限公司 Fuzzy yawing control system of wind generating set

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CN85202174U (en) * 1985-01-30 1986-08-20 清华大学 Wind controlled high drop-off to pick-up ratio and large power switch
GB9706542D0 (en) * 1997-04-01 1997-05-21 Bennett Peter Wind turbine yaw control and damping system
CN201377388Y (en) * 2009-04-23 2010-01-06 沈阳瑞祥风能设备有限公司 Fuzzy yawing control system of wind generating set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215156B2 (en) 2015-05-04 2019-02-26 General Electric Company Autonomous yaw control for a wind turbine

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