CN102797630A - Shutdown control method and shutdown control device of wind turbine generator set - Google Patents
Shutdown control method and shutdown control device of wind turbine generator set Download PDFInfo
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- CN102797630A CN102797630A CN2012102891177A CN201210289117A CN102797630A CN 102797630 A CN102797630 A CN 102797630A CN 2012102891177 A CN2012102891177 A CN 2012102891177A CN 201210289117 A CN201210289117 A CN 201210289117A CN 102797630 A CN102797630 A CN 102797630A
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- generating set
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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 invention discloses a shutdown control method and a shutdown control device of a wind turbine generator set. The control method comprises the steps that signals of power network voltage are detected; when the power network voltage is changed to zero, a loop is switched from a power network to an energy dissipation device, a standby power source simultaneously begins to supply power to the set, so that a normal shutdown flow is started; and after the upper limit of the capacity of the energy dissipation device is reached, the connection between the set and the energy dissipation device is cut off, and an emergent shutdown flow is started till the set reaches a shutdown state. The shutdown control device has the advantages that when a network disconnection fault occurs and the set shuts down, rotating kinetic energy of an impeller is absorbed by the energy dissipation device, and blades are enabled to feather at a relatively low variable-pitch rate to maintain the aerodynamic damping, thereby reducing the load of the set and preventing the occurrence of impeller overspeeding.
Description
Technical field
The present invention relates to a kind of shutdown controlling method of wind power generating set, particularly a kind of wind power generating set is shut down controlling method and device.
Technical background
The tower tube of wind power generating set belongs to flexible structure, has the low and little characteristics of damping of natural frequency.This characteristic makes when the off-grid fault takes place, in unit disorderly closedown process, causes bigger vibration and load.General way only reduces vibration and reduces load through the change oar speed that reduces in the stopping process.
The main target of existing method is that the pneumatic damping that the impeller rotation is produced disappears more slowly, thereby slows down the vibration of tower tube.But meanwhile blade still is in more excellent angle of attack state, and the impeller rotation torque is still bigger, is very easy to cause the impeller hypervelocity, and promptly the rotational kinetic energy of impeller constantly increases, and makes unit get into dangerous more state.
Summary of the invention
In order to solve the technical problem that there is big load in existing wind power generating set stopping process when the off-grid fault takes place, the present invention provides a kind of principle wind power generating set simple, that realize easily to shut down controlling method and device.
The technological scheme that the present invention solves the problems of the technologies described above is: a kind of wind power generating set is shut down controlling method, may further comprise the steps:
1) detection of grid voltage signal;
2) controller judges whether line voltage is zero,
If get into step 3);
If not, return step 1);
3) loop switches to energy-dissipating device by electrical network;
4) wind power generating set is carried out the orderly closedown flow process;
5) controller judges whether to reach the energy-dissipating device maximum size,
If get into step 6);
If not, return step 4);
6) the telegram in reply net is switched by energy-dissipating device in the loop;
7) wind power generating set starting emergency shutdown flow process is the pitch-controlled system power supply by independent power supply device, until reaching outage state.
Above-mentioned wind power generating set is shut down in the controlling method, adopts voltage transducer to gather mains voltage signal in the said step 1).
Above-mentioned wind power generating set is shut down in the controlling method, adopts multidirectional selector switch between unit and electrical network or energy-dissipating device loop, to switch in the said step 3).
Above-mentioned wind power generating set is shut down in the controlling method, and the change oar speed of emergency shutdown flow process is between 2 ~ 4 °/s in the said step 7).
A kind of wind power generating set stop control apparatus; Comprise stand-by power supply device, wind power generating set, multidirectional selector switch, controller, voltage transducer, energy-dissipating device, working time judge module, the switch terminals of said multidirectional selector switch links to each other with wind power generating set, electrical network and energy-dissipating device respectively, and the control end of multidirectional selector switch links to each other with controller; One end of voltage transducer links to each other with electrical network; The other end links to each other with controller, delivers to controller to the mains voltage signal that collects, and working time, one end of judge module linked to each other with energy-dissipating device; The other end links to each other with controller; Judging that whether energy-dissipating device deliver to controller near the result of maximum size, controller also links to each other with wind power generating set, and the stand-by power supply device links to each other with wind power generating set.
In the above-mentioned wind power generating set stop control apparatus, described wind power generating set comprises independent power supply device and pitch-controlled system, and independent power supply device links to each other with pitch-controlled system, and the power supply of pitch-controlled system when stopping in emergency is provided.
Principle of the present invention is: the impeller of wind power generating set has very high rotary inertia, in rotary course, stores very high rotational kinetic energy, when the off-grid fault takes place; Energy can't discharge; Cause the vibration of tower tube bigger, and bigger load occurs, the present invention is provided with energy-dissipating device in wind power generating set; Can absorb energy, thereby solve the excessive problem that exceeds the speed limit with impeller of unit load.
Technique effect of the present invention is: the present invention is provided with energy-dissipating device in wind power generating set;, the off-grid fault absorbs the rotational kinetic energy of impeller when taking place in the stopping process by energy-dissipating device; And make blade with lower change oar speed feathering; Keep pneumatic damping, thereby reduced the load of unit, prevent the generation of impeller hypervelocity.And the principle of the invention is simple, is convenient to manufacture, and using effect is obvious, and is durable in use, and the transformation of convenient installation and existing unit is suitable on wind power generating set, using.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further described.
As shown in Figure 1; The present invention includes stand-by power supply device 1, wind power generating set 2, multidirectional selector switch 3, controller 4, voltage transducer 5, energy-dissipating device 6, working time judge module 6; The switch terminals of said multidirectional selector switch 3 links to each other with wind power generating set 2, electrical network and energy-dissipating device 6 respectively, and the control end of multidirectional selector switch 3 links to each other with controller 4, and an end of voltage transducer 5 links to each other with electrical network; The other end links to each other with controller 4; Voltage transducer 5 is delivered to controller 4 to the mains voltage signal that collect, and working time, a judge module end of 7 linked to each other with energy-dissipating device 6, and the other end links to each other with controller 4; Working time, judge module 7 was judging that whether energy-dissipating device 6 deliver to controller 4 near the result of maximum size; Whether controller 4 carries out the loop near capacity according to energy-dissipating device 6 switches, and controller 4 also links to each other with wind power generating set 2,1 power supply of whole device when electrical network is caught of stand-by power supply device.
Referring to Fig. 2, Fig. 2 is a flow chart of the present invention.This wind power generating set shutdown control procedure is following:
1) delivers to controller with voltage transducer detection of grid voltage signal, and with testing signal;
2) controller judges whether line voltage is zero,
If get into step 3);
If not, return step 1);
3) loop switches to energy-dissipating device by electrical network;
4) the stand-by power supply device is the unit power supply, and wind power generating set is pressed the orderly closedown flow operations;
5) working time, whether judge module judged energy-dissipating device near maximum size, and the result is delivered to controller, if get into step 6); Otherwise, return step 4);
6) controller is controlled multidirectional selector switch the telegram in reply net is switched by energy-dissipating device in the loop;
7) wind power generating set starting emergency shutdown flow process is the pitch-controlled system power supply by independent power supply device, until reaching outage state.
Claims (6)
1. a wind power generating set is shut down controlling method, may further comprise the steps:
1) detection of grid voltage signal;
2) controller judges whether line voltage is zero,
If get into step 3);
If not, return step 1);
3) loop switches to energy-dissipating device by electrical network;
4) wind power generating set is carried out the orderly closedown flow process;
5) controller judges whether to reach the energy-dissipating device maximum size,
If get into step 6);
If not, return step 4);
6) the telegram in reply net is switched by energy-dissipating device in the loop;
7) wind power generating set starting emergency shutdown flow process is the pitch-controlled system power supply by independent power supply device, until reaching outage state.
2. wind power generating set according to claim 1 is shut down controlling method, adopts voltage transducer to gather mains voltage signal in the said step 1).
3. wind power generating set according to claim 1 is shut down controlling method, adopts multidirectional selector switch between unit and electrical network or energy-dissipating device loop, to switch in the said step 3).
4. wind power generating set according to claim 1 is shut down controlling method, and the change oar speed of emergency shutdown flow process is between 2 ~ 4 °/s in the said step 7).
5. wind power generating set stop control apparatus; It is characterized in that: comprise stand-by power supply device, wind power generating set, multidirectional selector switch, controller, voltage transducer, energy-dissipating device, working time judge module, the switch terminals of said multidirectional selector switch links to each other with wind power generating set, electrical network and energy-dissipating device respectively, and the control end of multidirectional selector switch links to each other with controller; One end of voltage transducer links to each other with electrical network; The other end links to each other with controller, delivers to controller to the mains voltage signal that collects, and working time, one end of judge module linked to each other with energy-dissipating device; The other end links to each other with controller; Judging that whether energy-dissipating device deliver to controller near the result of maximum size, controller also links to each other with wind power generating set, and the stand-by power supply device links to each other with wind power generating set.
6. wind power generating set stop control apparatus as claimed in claim 5 is characterized in that: described wind power generating set comprises independent power supply device and pitch-controlled system, and independent power supply device links to each other with pitch-controlled system, and the power supply of pitch-controlled system when stopping in emergency is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102891177A CN102797630A (en) | 2012-08-15 | 2012-08-15 | Shutdown control method and shutdown control device of wind turbine generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102891177A CN102797630A (en) | 2012-08-15 | 2012-08-15 | Shutdown control method and shutdown control device of wind turbine generator set |
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| CN102797630A true CN102797630A (en) | 2012-11-28 |
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| CN2012102891177A Pending CN102797630A (en) | 2012-08-15 | 2012-08-15 | Shutdown control method and shutdown control device of wind turbine generator set |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781877A (en) * | 2016-03-04 | 2016-07-20 | 北京金风科创风电设备有限公司 | Shutdown control method, device and system of wind generating set |
| CN108204336A (en) * | 2018-01-30 | 2018-06-26 | 北京金风科创风电设备有限公司 | Wind generating set stopping method and device, storage medium and computing device |
| CN112761874A (en) * | 2021-02-04 | 2021-05-07 | 湘电风能有限公司 | Safe shutdown method and system and wind driven generator |
| CN113217280A (en) * | 2021-04-20 | 2021-08-06 | 东方电气风电有限公司 | Brake device and brake type shutdown control method of direct-drive wind driven generator |
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| CN1836102A (en) * | 2003-08-15 | 2006-09-20 | 再生动力系统股份公司 | Wind power plant comprising a rotor blade adjusting device |
| CN101009475A (en) * | 2006-01-19 | 2007-08-01 | 通用电气公司 | Wind turbine dump load system and method |
| CN101228351A (en) * | 2005-07-22 | 2008-07-23 | 歌美飒创新技术公司 | Method of maintaining wind turbine components operational and a turbine comprising components suitable for operational maintenance |
| CN101320953A (en) * | 2007-06-05 | 2008-12-10 | 株式会社日立制作所 | Wind power generation system and control method thereof |
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| WO2010084131A2 (en) * | 2009-01-22 | 2010-07-29 | Vestas Wind Systems A/S | Control of a wind turbine rotor during a stop process using pitch and a surface altering device |
| CN101938138A (en) * | 2009-06-30 | 2011-01-05 | 维斯塔斯风力系统有限公司 | Electric energy management during the electric network fault |
| CN102324754A (en) * | 2011-08-26 | 2012-01-18 | 天津理工大学 | Double-feed wind power generator low-voltage through control system based on energy storage device |
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| CN1836102A (en) * | 2003-08-15 | 2006-09-20 | 再生动力系统股份公司 | Wind power plant comprising a rotor blade adjusting device |
| EP1701034A2 (en) * | 2005-03-09 | 2006-09-13 | Winwind Oy | Method for stopping the rotor of a wind power plant |
| CN101228351A (en) * | 2005-07-22 | 2008-07-23 | 歌美飒创新技术公司 | Method of maintaining wind turbine components operational and a turbine comprising components suitable for operational maintenance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781877A (en) * | 2016-03-04 | 2016-07-20 | 北京金风科创风电设备有限公司 | Shutdown control method, device and system of wind generating set |
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| CN108204336A (en) * | 2018-01-30 | 2018-06-26 | 北京金风科创风电设备有限公司 | Wind generating set stopping method and device, storage medium and computing device |
| CN108204336B (en) * | 2018-01-30 | 2019-08-02 | 北京金风科创风电设备有限公司 | Wind generating set stopping method and device, storage medium and computing device |
| CN112761874A (en) * | 2021-02-04 | 2021-05-07 | 湘电风能有限公司 | Safe shutdown method and system and wind driven generator |
| CN113217280A (en) * | 2021-04-20 | 2021-08-06 | 东方电气风电有限公司 | Brake device and brake type shutdown control method of direct-drive wind driven generator |
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Application publication date: 20121128 |