CN105041568A - Control method for preventing fan galloping - Google Patents
Control method for preventing fan galloping Download PDFInfo
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- CN105041568A CN105041568A CN201510541962.2A CN201510541962A CN105041568A CN 105041568 A CN105041568 A CN 105041568A CN 201510541962 A CN201510541962 A CN 201510541962A CN 105041568 A CN105041568 A CN 105041568A
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- blower fan
- rotating speed
- angle
- galloping
- fan
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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
Abstract
A control method for preventing fan galloping belongs to the technical field of wind-driven generators. The control method comprises the following steps: monitoring the rotating speeds of an impeller and a generator in real time through a main controller of a fan, judging whether the rotating speed of the generator exceeds 1.1 times a rated rotating speed or not or whether the rotating speed of the impeller exceeds the ratio of 1.1 times the rated rotating speed to a gearbox speed or not, if yes, giving the main controller a high level and triggering a timer in a control program to perform timing; if the time measured by the timer exceeds 1.5 times fan design allowed time of exceeding 1.1 times the rated rotating speed, and a control terminal of the timer keeps the high level always, enabling the main controller to automatically start a yaw system, wherein a yaw angle is in a negative direction relative to a current windward angle; if a fan galloping automatic yaw stop angle is greater than a windward angle before blower galloping, enabling the main controller to stop yawing, report fan overspeed and fan galloping failures and perform local display and SCADA remote display. Through the method, a galloping danger situation can be dealt with automatically in time.
Description
Technical field
The invention belongs to technical field of wind power generator, particularly relate to a kind of controlling method preventing blower fan driving.
Background technique
Wind power generating set prevents the way of blower fan driving from being in more than rated wind speed, by pitch-controlled system, the propeller pitch angle of blade is become large, reduce blade to the utilization of wind energy, the rotating speed of impeller is reduced mostly at present.But in the running of blower fan, because various reason (such as frequency variator overcurrent quits work, pitch motor fault, back-up power capacity reduction etc.) causes the driving of blower fan, because blower fan is in uncontrollable state, personnel dare not near blower fan, and blower fan of can only leaving constantly increases rotating speed under the action of the forces of the wind until damage.Larger personnel and the loss of property is caused to owner, complete-system vendor.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of controlling method preventing blower fan driving.It can process driving dangerous situation automatically timely.
The object of the invention is: time the blade pitch angle of blower fan is uncontrollable, blower fan is incipient rotating speed often, is not necessarily long-term higher than rated speed.First reason: be that wind speed at that time might not be greater than rated wind speed for a long time; Second reason: blade pitch angle uncontrollable incipient time; if the scope that its rotating speed can bear at current transformer; impeller will receive the containing of generator electromagnetic torque; and can not rise by rotating speed rapidly; the electric current only having rotating speed that ought be too high for a long time to exceed current transformer can to bear; frequency converter control system can block pwm pulse to protect oneself; it is made to quit work or IGBT demolition; this just causes further rotating speed and rises rapidly; now; the impeller of blower fan dallies under the action of the forces of the wind, considerably beyond rated speed.
The impeller of blower fan only in just to wind, could be maximum utilize wind energy.If with the deviation (such as 40 degree) just wind direction being had to several angle, impeller blade will reduce rapidly to the utilization ratio of wind-force, and the rotating speed of the impeller of blower fan will reduce rapidly, even stop operating.Object of the present invention is exactly judge that blower fan is when the state of driving by change control strategy, carries out time delay and start automatically go off course function and runaway manual-remote SCADA of runaway going off course controlling functions.
The object of the invention is to be achieved through the following technical solutions:
A kind of controlling method preventing blower fan driving of the present invention, comprises the steps:
The first step: carry out real-time monitoring by the rotating speed of master controller to impeller and generator of blower fan, judge that whether the rotating speed of generator is more than 1.1 times of rated speeds, or, whether wheel speed is more than 1.1 times of rated speeds/gear-box speed ratio, as do not exceeded, continuing monitoring, as exceeded, carrying out next step; Second step: to master controller high level, namely the voltage of signal input point jumps to 24V from 0V, when input signal jumps to 24V by 0V, the timer in trigging control program, carries out timing;
3rd step: judging whether timer timing exceedes 1.5 times that fan design allows 1.1 times of rated speed times of hypervelocity, as do not exceeded, continuing timing; If to exceed and Timer Controlling terminal is high level always, master controller needs automatically to start yaw system, and yaw angle is current just to the Vertical direction of wind direction angle, that is: set current just to wind direction angle as θ, start yaw system, stop angle is θ ± 90 °;
4th step: judge blower fan driving automatically go off course stop angle whether be greater than before blower fan driving to wind angle ± 90 degree; As no, then continue to start automatic yaw system; In this way, then master controller stops driftage, quotes that blower fan is overrun, blower fan driving fault by local and SCADA (data capture and supervisor control) long-range display.
Further, in described Remote SCADA system, be also added with the manual-remote driftage control module of high authority, be connected with blower fan master controller by optical fiber system, the driftage instruction transmitted by SCADA, by the optical fiber system of wind energy turbine set, transfers in the master controller of the blower fan of driving, goes off course.
Beneficial effect of the present invention is:
Invention increases the tight concrete grammar preventing driving, and its method realized is comparatively simple, cost is lower, and existing hardware system with changing, just increases subprogram hardly in main control PLC.It can process driving dangerous situation automatically timely.
Accompanying drawing explanation
Fig. 1 is control flow chart of the present invention.
Embodiment
Below by embodiment and accompanying drawing, the invention will be further described.
Embodiment: as shown in Figure 1, a kind of controlling method preventing blower fan driving of the present invention, comprises the steps:
The first step: carry out real-time monitoring by the rotating speed of master controller to impeller and generator of blower fan, judge that whether the rotating speed of generator is more than 1.1 times of rated speeds, or, whether wheel speed is more than 1.1 times of rated speeds/gear-box speed ratio, as do not exceeded, continuing monitoring, as exceeded, carrying out next step;
Second step: to master controller high level, namely the voltage of signal input point jumps to 24V from 0V, when input signal jumps to 24V by 0V, the timer in trigging control program, carries out timing;
3rd step: judging whether timer timing exceedes 1.5 times that fan design allows 1.1 times of rated speed times of hypervelocity, as do not exceeded, continuing timing; If to exceed and Timer Controlling terminal is high level always, master controller needs automatically to start yaw system, and yaw angle is current just to the Vertical direction of wind direction angle, that is: set current just to wind direction angle as θ, start yaw system, stop angle is θ ± 90 °;
4th step: judge blower fan driving automatically go off course stop angle whether be greater than before blower fan driving to wind angle ± 90 degree; As no, then continue to start automatic yaw system; In this way, then master controller stops driftage, quotes that blower fan is overrun, blower fan driving fault by local and SCADA (data capture and supervisor control) long-range display.
In described Remote SCADA system, also be added with the manual-remote driftage control module of high authority, be connected with blower fan master controller by optical fiber system, the driftage instruction transmitted by SCADA is by the optical fiber system of wind energy turbine set, transfer in the master controller of the blower fan of driving, go off course.If prevent the automatic driftage disabler of driving or the operator on duty at wind energy turbine set monitoring chamber, find timely and identify the state of driving, its can manually Remote SCADA driftage controlling functions, the angle (reaching precalculated position preferably by driftage several times) of θ ± 90 ° is inputted, until draught fan impeller stops operating in the software of SCADA.
Claims (2)
1. prevent a controlling method for blower fan driving, it is characterized in that: comprise the steps:
The first step: carry out real-time monitoring by the rotating speed of master controller to impeller and generator of blower fan, judge that whether the rotating speed of generator is more than 1.1 times of rated speeds, or, whether wheel speed is more than 1.1 times of rated speeds/gear-box speed ratio, as do not exceeded, continuing monitoring, as exceeded, carrying out next step;
Second step: to master controller high level, namely the voltage of signal input point jumps to 24V from 0V, when input signal jumps to 24V by 0V, the timer in trigging control program, carries out timing;
3rd step: judging whether timer timing exceedes 1.5 times that fan design allows 1.1 times of rated speed times of hypervelocity, as do not exceeded, continuing timing; If to exceed and Timer Controlling terminal is high level always, master controller needs automatically to start yaw system, and yaw angle is current just to the Vertical direction of wind direction angle, that is: set current just to wind direction angle as θ, start yaw system, stop angle is θ ± 90 °;
4th step: judge blower fan driving automatically go off course stop angle whether be greater than before blower fan driving to wind angle ± 90 degree; As no, then continue to start automatic yaw system; In this way, then master controller stops driftage, quotes that blower fan is overrun, blower fan driving fault by local and SCADA (data capture and supervisor control) long-range display.
2. prevent the controlling method of blower fan driving according to claim 1, it is characterized in that: in described Remote SCADA system, also be added with the manual-remote driftage control module of high authority, be connected with blower fan master controller by optical fiber system, the driftage instruction transmitted by SCADA is by the optical fiber system of wind energy turbine set, transfer in the master controller of the blower fan of driving, go off course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541962.2A CN105041568A (en) | 2015-08-28 | 2015-08-28 | Control method for preventing fan galloping |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510541962.2A CN105041568A (en) | 2015-08-28 | 2015-08-28 | Control method for preventing fan galloping |
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| CN105041568A true CN105041568A (en) | 2015-11-11 |
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| CN201510541962.2A Pending CN105041568A (en) | 2015-08-28 | 2015-08-28 | Control method for preventing fan galloping |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420264A (en) * | 2017-09-30 | 2017-12-01 | 湘电风能有限公司 | A kind of control method of wind turbine yaw to wind start and stop |
| CN107620670A (en) * | 2016-07-13 | 2018-01-23 | 北京国电思达科技有限公司 | A kind of anti-hypervelocity Yaw control method of Wind turbines |
| CN107956637A (en) * | 2016-10-14 | 2018-04-24 | 北京金风科创风电设备有限公司 | Wind-driven generator method for controlling number of revolution, equipment and system |
| CN110630444A (en) * | 2019-10-09 | 2019-12-31 | 北京汇智天华新能源科技有限公司 | Wind generating set safety companion system |
| CN112392655A (en) * | 2019-08-14 | 2021-02-23 | 湖南世优电气股份有限公司 | Automatic emergency yawing device, method and equipment for wind driven generator |
| CN112594131A (en) * | 2020-11-26 | 2021-04-02 | 中国船舶重工集团海装风电股份有限公司 | Method and system for controlling yaw of wind generating set during crosswind and related components |
| CN113188754A (en) * | 2021-04-30 | 2021-07-30 | 沈阳航空航天大学 | Impeller runaway control method in horizontal axis wind turbine aerodynamic performance experiment |
| CN115263582A (en) * | 2022-08-12 | 2022-11-01 | 广西玉柴机器股份有限公司 | Control strategy and storage medium for limiting engine runaway |
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| CN201288636Y (en) * | 2008-10-23 | 2009-08-12 | 皇明太阳能集团有限公司 | Rotation speed detection and control apparatus for micro wind power generator |
| CN202228273U (en) * | 2011-09-26 | 2012-05-23 | 浙江众科自动化工程科技有限公司 | Runaway prevention protection device and variable-pitch control system |
| KR20130063574A (en) * | 2011-12-07 | 2013-06-17 | 대우조선해양 주식회사 | Pitch control system and control method of wind power generation system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620670A (en) * | 2016-07-13 | 2018-01-23 | 北京国电思达科技有限公司 | A kind of anti-hypervelocity Yaw control method of Wind turbines |
| CN107956637A (en) * | 2016-10-14 | 2018-04-24 | 北京金风科创风电设备有限公司 | Wind-driven generator method for controlling number of revolution, equipment and system |
| CN107420264B (en) * | 2017-09-30 | 2019-07-02 | 湘电风能有限公司 | A kind of control method of wind turbine yaw to wind start and stop |
| CN107420264A (en) * | 2017-09-30 | 2017-12-01 | 湘电风能有限公司 | A kind of control method of wind turbine yaw to wind start and stop |
| CN112392655B (en) * | 2019-08-14 | 2022-07-15 | 湖南世优电气股份有限公司 | Automatic emergency yawing device, method and equipment for wind driven generator |
| CN112392655A (en) * | 2019-08-14 | 2021-02-23 | 湖南世优电气股份有限公司 | Automatic emergency yawing device, method and equipment for wind driven generator |
| CN110630444A (en) * | 2019-10-09 | 2019-12-31 | 北京汇智天华新能源科技有限公司 | Wind generating set safety companion system |
| CN112594131A (en) * | 2020-11-26 | 2021-04-02 | 中国船舶重工集团海装风电股份有限公司 | Method and system for controlling yaw of wind generating set during crosswind and related components |
| CN112594131B (en) * | 2020-11-26 | 2022-04-26 | 中国船舶重工集团海装风电股份有限公司 | Method and system for controlling yaw of wind generating set during crosswind and related components |
| CN113188754B (en) * | 2021-04-30 | 2022-06-10 | 沈阳航空航天大学 | Impeller runaway control method in horizontal axis wind turbine aerodynamic performance experiment |
| CN113188754A (en) * | 2021-04-30 | 2021-07-30 | 沈阳航空航天大学 | Impeller runaway control method in horizontal axis wind turbine aerodynamic performance experiment |
| CN115263582A (en) * | 2022-08-12 | 2022-11-01 | 广西玉柴机器股份有限公司 | Control strategy and storage medium for limiting engine runaway |
| CN115263582B (en) * | 2022-08-12 | 2023-09-22 | 广西玉柴机器股份有限公司 | Control strategy and storage medium for limiting engine galloping |
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Application publication date: 20151111 |