CN202645850U - Emergency shutdown control system of wind generating set - Google Patents
Emergency shutdown control system of wind generating set Download PDFInfo
- Publication number
- CN202645850U CN202645850U CN2012203366637U CN201220336663U CN202645850U CN 202645850 U CN202645850 U CN 202645850U CN 2012203366637 U CN2012203366637 U CN 2012203366637U CN 201220336663 U CN201220336663 U CN 201220336663U CN 202645850 U CN202645850 U CN 202645850U
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- emergency shutdown
- control system
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- generating set
- rotating speed
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to an emergency shutdown control system of a wind generating set. The emergency shutdown control system comprises an emergency shutdown triggering module used for sending out emergency shutdown signals, a main control system rotating speed detection module, a safe system emergency shutdown module, a hydraulic system and a high speed shaft brake. The main control system rotating speed detection module monitors rotating speed of an impeller and sends signals to the safe system emergency shutdown module when detecting that the rotating speed of the impeller is lower than set threshold. The safe system emergency shutdown module triggers emergency feathering and frequency converter talk around, sends out brake instructions when a main control system is effective and the rotating speed of the main control system is lower than the set threshold, or sends out the brake instructions when the main control system fails and is delayed. The hydraulic system changes pressure according to the brake instructions of the safe system emergency shutdown module, and the high speed shaft brake controls startup through pressure change of the hydraulic system. The emergency shutdown control system ensures safe quick shutdown even under the condition that the main control system fails, ensures safety of the wind generating set and does not additionally increase hardware cost of the wind generating set.
Description
Technical field
The utility model relates to a kind of wind power generating set safety control field, particularly relates to a kind of wind power generating set engine off control system.
Background technique
In order to guarantee the safe operation of wind power generating set, Large-scale Wind Turbines is except there being master control system security of system control strategy processed, also have a cover to be independent of master control system security of system processed system, be also referred to as theft-resistant link chain, its executive level is higher than the executive level of master control system system processed.
Safety system by the safety relay access, comprises all catastrophe failure points that threaten blower fan safety emergency shutdown, overspeed detection, turns round cable limit switch, vibration detection etc.In case theft-resistant link chain disconnects, wind power generating set meeting moment off-grid, and carry out emergency feathering, thus guarantee to greatest extent the safety of unit.Can the safety reliability of wind turbine control system work have become wind-power generating system and play a role, even become the significant problem of wind energy turbine set long-term safety reliable operation, so the safety protection of safety chain control system action is even more important.
After wind power generating set is sent the emergency shutdown order; the blade emergency feathering simultaneously in order to reduce the impact force to Transmitted chains and unit, allows unit fast, stop completely; need to specific the time, start the high speed shaft brake, the wind-powered electricity generation unit is stopped fully.The existing system that gives an order directly controls braking and the release of high speed shaft brake by master control system, if but the master control system catastrophic failure, communicating interrupt, then the high speed shaft brake can not moved, and this may cause serious infringement to unit.If tap into safety system and additionally increase hardware, then can increase the cost of unit.
This shows that above-mentioned existing a kind of wind power generating set engine off control system obviously still has inconvenience and defective, and demands urgently further being improved in structure, method and use.How to found a kind of guarantee wind power generating set still can be safely in the situation that master control system lost efficacy, shut down fast; the safety of protection wind power generating set; and need not additionally increase the new wind power generating set engine off control system of the hardware cost of wind power generating set, real one of the current important research and development problem that belongs to.
The model utility content
The technical problems to be solved in the utility model provides a kind of wind power generating set engine off control system; make its can guarantee wind power generating set still can be safely in the situation that master control system lost efficacy, shut down fast; the safety of protection wind power generating set; and need not additionally increase the hardware cost of wind power generating set, thereby overcome the deficiency of existing wind power generating set engine off control system.
For solving the problems of the technologies described above, a kind of wind power generating set engine off control of the utility model system comprises: the emergency shutdown trigger module that sends emergent stop signal; Wheel speed is monitored, and when detecting wheel speed and be lower than setting threshold, to the master control system rotating speed testing module of safety system emergency shutdown module transmitted signal; Trigger emergency feathering and frequency variator off-grid according to emergent stop signal, and master control system effectively and rotating speed send braking instruction when being lower than setting threshold, the certain hour of perhaps delaying time when master control system lost efficacy sends the safety system emergency shutdown module of braking instruction; Change the hydraulic system of pressure according to the braking instruction of safety system emergency shutdown module; And the high speed shaft brake that is changed control startup, release by the pressure of hydraulic system.
As further improvement, described safety system emergency shutdown module comprises signal receiving module, Logic control module and time delay module.
Described safety system emergency shutdown module adopts the programmable safe controller.
After adopting such design, the utlity model has following advantage:
1, after the emergency-stop signal of unit is triggered, directly triggers the high speed shaft skidding by safety system;
2, after unit triggers emergency shutdown, when master control system did not lose efficacy, by receiving signal that the rotating speed that transmits from master control system is lower than setting threshold and emergency-stop signal phase and determining afterwards whether to send to hydraulic system and start high speed shaft and brake, this can guarantee wind power generating set again action of high speed shaft brake when a smaller rotating speed, thereby guaranteed that unit can not cause because of braking at a high speed large vibration or the damage of Transmitted chains or other parts, has guaranteed the unit safety shutdown;
3, after unit triggers emergency shutdown; when master control system lost efficacy, adopt time delay module directly just to start the high speed shaft brake after the time-delay, even any fault occurs master control system; do not affect blower fan and get back to fast safe condition, thereby farthest guarantee the safety of wind power generating set.
Description of drawings
Above-mentioned only is the general introduction of technical solutions of the utility model, and for can clearer understanding technological means of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the composition schematic representation of a kind of wind power generating set engine off control of the utility model system.
Embodiment
See also shown in Figure 1ly, a kind of wind power generating set engine off control of the utility model system comprises the brake of emergency shutdown trigger module, master control system rotating speed testing module, safety system emergency shutdown module, hydraulic system and high speed shaft.
Wherein, the emergency shutdown trigger module is connected to safety system by hardwire; master control system speed testing module also is connected to safety system emergency shutdown module; safety system emergency shutdown module is connected with hydraulic system again, and hydraulic system determines whether starting the high speed shaft brake according to the variation of pressure.
Specifically; the emergency shutdown trigger module is used for sending emergent stop signal; its signal derives from emergency shutdown button at the bottom of cabin or the tower, the emergency shutdown order in the master control system software, long-range emergency shutdown order etc.; wherein any one sends the emergency shutdown order, and unit all can carry out emergency shutdown.After the emergency shutdown trigger signal returns to high level signal, trigger the high speed shaft brake and discharge.
Master control system rotating speed testing module can be monitored wheel speed when carrying out emergency shutdown, when detecting wheel speed and be lower than the threshold value of setting, just sends the signal that rotating speed meets the demands to safety system emergency shutdown module.
Safety system emergency shutdown module; be used for specially processing the emergency shutdown of unit; the programmable safety governor of general employing is realized; comprise a signal receiving module, a Logic control module and a time delay module; signal receiving module receives described emergency-stop signal; trigger emergency feathering and frequency variator off-grid; in the situation that does not have to lose efficacy in master control system; if signal receiving module receives the signal that rotating speed that master control system rotating speed testing module sends is lower than certain threshold value, then trigger hydraulic system and change pressure and start the high speed shaft brake.If master control system lost efficacy, directly trigger hydraulic system change pressure by time delay module and start the high speed shaft brake.
Hydraulic system receives that safety system emergency shutdown module transmits allows after the order of high speed shaft skidding, changes pressure and makes the high speed shaft skidding.
The implementation process of the utility model wind power generating set engine off control system may further comprise the steps:
A. during unit operation, safety system continues to send high level signal.
B. when unit breaks down, the signal receiving module of safety system emergency shutdown module receives lasting low level signal, the emergency-stop signal of expression wind power generating set is triggered, safety system emergency shutdown module triggers emergency feathering and frequency variator off-grid according to emergent stop signal, judges whether master control system is effective, whether rotating speed is lower than setting threshold simultaneously;
C1. simultaneously, when master control system did not lose efficacy, signal, master control system useful signal that the rotating speed that the master control system that emergent stop signal, signal receiving module receive is sent is lower than certain threshold value carry out logical “and”, change pressure and start the high speed shaft brake according to triggering hydraulic system with afterwards signal.
If C2. master control system lost efficacy, directly emergent stop signal, master control system useful signal are carried out logical “and”, trigger hydraulic system change pressure by time delay module time-delay certain hour again and start the high speed shaft brake.
D. be excluded when the unit fault, behind normal the startup, safety system returns to normal state, the lasting high level signal that sends, and hydraulic system receives high level signal, earth pressure release, the high speed shaft brake discharges.
Wherein, emergent stop signal derives from the emergency shutdown button at the bottom of cabin or the tower, emergency shutdown order or the long-range emergency shutdown order of master control system.
When blower fan carried out emergency shutdown, the utility model determined whether braking the high speed shaft brake according to the signal of safety system output.Master control system rotating speed testing module is used for detecting wheel speed and whether is lower than setting threshold, if the rotating speed of impeller is lower than setting threshold, sends the signal that a rotating speed is lower than setting threshold to safety system.When safety system receives emergency-stop signal, trigger emergency feathering and frequency variator off-grid, when master control system did not lose efficacy, if receive the signal that the rotating speed that transmits from master control system is lower than setting threshold, then trigger hydraulic system and start the high speed shaft brake; When master control system lost efficacy, the certain hour of directly delaying time just triggered hydraulic system and starts the high speed shaft brake.Thereby avoided to start because of the inefficacy of master control system the situation of high speed shaft brake, improved the protection abilities of unit under rugged environment, do not needed additionally to increase the hardware cost of unit, thereby be suitable for being widely used in the wind-powered electricity generation industry.
Above-described embodiment is preferred embodiment of the present utility model only, is not limited to the utility model.Although with reference to previous embodiment the utility model is had been described in detail, for a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. wind power generating set engine off control system is characterized in that comprising:
Send the emergency shutdown trigger module of emergent stop signal;
Wheel speed is monitored, and when detecting wheel speed and be lower than setting threshold, to the master control system rotating speed testing module of safety system emergency shutdown module transmitted signal;
Trigger emergency feathering and frequency variator off-grid according to emergent stop signal, and master control system effectively and rotating speed send braking instruction when being lower than setting threshold, send the safety system emergency shutdown module of braking instruction after perhaps when master control system lost efficacy, delaying time;
Change the hydraulic system of pressure according to the braking instruction of safety system emergency shutdown module; And
Pressure by hydraulic system changes the high speed shaft brake that control starts, discharges.
2. a kind of wind power generating set engine off control according to claim 1 system is characterized in that described safety system emergency shutdown module comprises signal receiving module, Logic control module and time delay module.
3. a kind of wind power generating set engine off control according to claim 1 system is characterized in that described safety system emergency shutdown module adopts the programmable safe controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203366637U CN202645850U (en) | 2012-07-10 | 2012-07-10 | Emergency shutdown control system of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203366637U CN202645850U (en) | 2012-07-10 | 2012-07-10 | Emergency shutdown control system of wind generating set |
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| Publication Number | Publication Date |
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| CN202645850U true CN202645850U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012203366637U Expired - Lifetime CN202645850U (en) | 2012-07-10 | 2012-07-10 | Emergency shutdown control system of wind generating set |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748213A (en) * | 2012-07-10 | 2012-10-24 | 国电联合动力技术有限公司 | Emergency shutdown control system and method for wind generating set |
| 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 |
| CN110067699A (en) * | 2019-05-27 | 2019-07-30 | 大连交通大学 | A kind of high-speed overload operating condition pressure changeable mechanical braking method and big megawatt wind machine mechanical braking system |
| 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 |
-
2012
- 2012-07-10 CN CN2012203366637U patent/CN202645850U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748213A (en) * | 2012-07-10 | 2012-10-24 | 国电联合动力技术有限公司 | Emergency shutdown control system and method for wind generating set |
| CN102748213B (en) * | 2012-07-10 | 2016-02-03 | 国电联合动力技术有限公司 | A kind of wind power generating set engine off control system and method |
| 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 |
| CN105781877B (en) * | 2016-03-04 | 2018-09-11 | 北京金风科创风电设备有限公司 | Shutdown control method, device and system of wind generating set |
| CN110067699A (en) * | 2019-05-27 | 2019-07-30 | 大连交通大学 | A kind of high-speed overload operating condition pressure changeable mechanical braking method and big megawatt wind machine mechanical braking system |
| CN110067699B (en) * | 2019-05-27 | 2024-03-08 | 大连交通大学 | High-speed heavy-load working condition variable pressure mechanical braking method and large megawatt wind turbine mechanical braking system |
| 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 |
| CN112761874B (en) * | 2021-02-04 | 2022-09-16 | 湘电风能有限公司 | Safe shutdown method and system and wind driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NATIONAL ELECTRIC NEW ENERGY TECHNOLOGY INSTITUTE Effective date: 20130703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130703 Address after: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee after: GUODIAN UNITED POWER TECHNOLOGY Co.,Ltd. Patentee after: GUODIAN NEW ENERGY TECHNOLOGY INSTITUTE Address before: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee before: GUODIAN UNITED POWER TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |