CN106286127B - A kind of wind-driven generator group parts oscillation monitoring method - Google Patents
A kind of wind-driven generator group parts oscillation monitoring method Download PDFInfo
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- CN106286127B CN106286127B CN201510256455.4A CN201510256455A CN106286127B CN 106286127 B CN106286127 B CN 106286127B CN 201510256455 A CN201510256455 A CN 201510256455A CN 106286127 B CN106286127 B CN 106286127B
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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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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of wind-driven generator group parts to vibrate monitoring method, belongs to MW class wind turbine group control technology field.This method comprises the following steps：Measure current generator revolving speed；It will need the frequency of monitoring component（I=1,2,3 ... m, m are the total number of parts for needing to monitor）And generator speedIt is input in bandpass filter, obtains corresponding generator speed oscillation；It willIt is input in oscillation amplitude detection module, calculates generator speed oscillation amplitude；It willIt is input in breakdown judge module, calculates corresponding error code flag bit；It willIt is input in fault processing module, control generator protection shuts down and shows fault message.The present invention can be according to the oscillatory regime of generator measurement revolving speed real-time monitoring machine group parts; control generator protection shuts down and shows the abnormal component of oscillation on display frequency; parameter adjustment is prompted, parts damages caused by avoiding drive train oscillation, component resonance or damper from failing.
Description
Technical field
The present invention relates to a kind of components to vibrate monitoring method, and especially a kind of oscillation for wind-driven generator group parts is supervised
Survey method.
Background technique
With the fast development of wind-powered electricity generation industry, Wind turbines gradually develop to big blade, the area Di Feng, and the area Di Feng wind regime is mostly
Hilltop complexity wind regime, wind shear and turbulivity are larger, and unit out-of-balance force is big；In addition the continuous lengthening of blade is driven link coupling
Frequency gradually decreases, it is caused easily to fall into unstable region with the intersection point for turning frequency, causes drive train oscillation.In addition, longer leaf
The wind regime of piece and complexity, is easy to produce various uncertain excitations, causes set tower frame, transmission chain resonance.It shakes for transmission chain
It swings and the caused tower oscillation of set tower frame resonance is excessive, transmission chain can be used and add resistance, pylon to add resistance or add trap
Form is inhibited, but the effect of transmission chain and tower damper is especially sensitive to the delay time of system actuator, is needed
Certain phase compensation is wanted, phase compensation inaccuracy will cause the failure of damper, or even cause reverse effect, aggravation transmission
Chain oscillation, pylon resonance or the vibration of other component.This transmission chain for just needing a set of monitoring mechanism to carry out real-time monitoring unit shakes
Swing, pylon resonance and other machine group parts vibrational state, to avoid changed due to component, aging circuit, mail edition program become
More etc. damper caused by reasons fails.However, there is no specific sensor that can effectively monitor Wind turbines currently on the market
The vibrational state of drive train oscillation, pylon resonance and other machine group parts.
Summary of the invention
In order to solve Wind turbines component oscillation monitoring problem, the invention proposes a kind of oscillations of wind-driven generator group parts
Monitoring method, can go out the component feature information in generator speed with extract real-time, judge machine according to the component feature extracted
The oscillatory regime of group parts, and compressor emergency shutdown protection is controlled according to degree of oscillation.
The technical solution adopted by the present invention to solve the technical problems is：A kind of wind-driven generator group parts oscillation monitoring side
Method includes mainly bandpass filter, oscillation amplitude detection module, breakdown judge module and fault processing module, wherein vibrating
Amplitude detection module includes generator speed memory module and extrema-finding module, and monitoring process includes the following steps：
Step S1：Current generator revolving speed is measured using measuring device；
Step S2：It will need the frequency of monitoring component（I=1,2,3 ... m, m are the total number of parts for needing to monitor）And step
The generator speed measured in rapid 1It is input in i-th of bandpass filter, is by centre frequencyBandpass filter filter
Corresponding generator speed oscillation is obtained after wave, whereinFor the intrinsic frequency or coupling frequency for needing monitoring component；
Step S3：The generator speed oscillation that step S2 is filtered outIt is input to i-th of oscillation amplitude detection module
In, calculate the position frequency of componentsUnder generator speed oscillation amplitude；
Step S4：By the calculated generator speed oscillation amplitude of step S3It is input to i-th of breakdown judge module
In, calculate corresponding error code flag bit；
Step S5：By the calculated error code flag bit of step S4It is input to fault processing module
In, control generator protection shuts down and shows fault message.
A kind of above-mentioned wind-driven generator group parts vibrate monitoring method, and wherein oscillation amplitude described in step S3 detects mould
Block includes the following steps：
Step S31：Use the position frequency of components of input, calculate a cycle of oscillation corresponding acquisition points,
WhereinFor the systematic sampling time；
Step S32：It, will using generator speed memory moduleIt is stored with the successive time sequencing of acquisition to length and isArrayIn；
Step S33：Using extrema-finding module, array in step S32 is found outIn maximum valueWith
Minimum value, utilize formulaGenerator speed is calculated in position frequency of componentsUnder vibration
Swing amplitude。
Above-mentioned oscillation amplitude detection module, wherein generator speed memory module described in step S32 includes following step
Suddenly：
Step S321：Initialisation unit frequencyUnder generator speed storage location variableIt is 1；
Step S322：Current generator tach signal that generator speed measuring device is measured and filtered
It is assigned to aray variable；
Step S323：；
Step S324：IfStep S322-S324 is then repeated, otherwise return step S321.
Above-mentioned oscillation amplitude detection module, wherein revolving speed extrema-finding module described in step S33 includes the following steps：
Step S331：Initialize k=1, revolving speed maximum value, minimum value；
Step S332：Compare Ng [k] withIf, then；Compare Ng [k] withIf, then；
Step S333：k=k+1；
Step S334：If, then repeatedly step S332-S334, no to then follow the steps S335；
Step S335：Generator speed is calculated in position frequency of componentsUnder oscillation amplitude。
A kind of above-mentioned wind-driven generator group parts vibrate monitoring method, wherein breakdown judge module packet described in step S4
Include following steps：
Step S41：Initialization oscillation stoppage protection value；
Step S42：CompareWith setting valueSize, if,
Then exportIt is 1, wherein、、Respectively i-th of component prison
Generator speed oscillation amplitude, stoppage protection value and the error code flag bit of measuring point.
A kind of above-mentioned wind-driven generator group parts vibrate monitoring method, wherein fault processing module packet described in step S5
Include following steps：
Step S51：It initializes the corresponding failure in i-th of component monitoring point and quotes delay time；
Step S52：Count error code flag bitFor 1 accumulated time, and with corresponding delay timeIt is compared, if accumulated time is greater than delay time setting value, activates the shutdown procedure of unit to protect and stop
Machine, and the status code Chinese annotation for activating stoppage protection is shown to man-machine interface.
The invention has the advantages that a kind of wind-driven generator group parts oscillation monitoring method is proposed, it can be according to machine
The generator speed of group measurement, calculates its oscillation width under machine group parts intrinsic frequency and transmission chain coupling frequency in real time
It is worth, can be used for the Wind turbines component vibrations such as set drive link coupling oscillation monitors, coupled oscillations monitor in face, pylon resonance monitors
Monitoring is swung, protection shuts down and shows the abnormal component of oscillation on display frequency, prompts parameter adjustment, avoid drive train oscillation or portion
Parts damages caused by part resonates.
Detailed description of the invention
Attached drawing is that component of the invention vibrates monitoring method functional block diagram.
In figure：1, bandpass filter；2, oscillation amplitude detection module；3, breakdown judge module；4, fault processing module.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
The present invention provides a kind of wind-driven generator group parts oscillation monitoring method, mainly includes bandpass filter 1, oscillation width
It is worth 4 four detection module 2, breakdown judge module 3 and fault processing module parts, wherein oscillation amplitude detection module 2 wraps again
Include generator speed memory module and extrema-finding module.Current generator revolving speed is measured using measuring device, for more
The component of a need monitoring, goes out current generator revolving speed using 1 extract real-time of bandpass filterFrequency is coupled in corresponding monitoring component
Rate or intrinsic frequency（I=1,2,3 ... m, m are the total number of parts for needing to monitor）Under tach signal, willIt is input to
In oscillation amplitude detection module 2.When calculating generator speed oscillation amplitude under the currently monitored position frequency of components, first using input
Position frequency of componentsCalculate a cycle of oscillation corresponding acquisition points, whereinFor the systematic sampling time, then make
It, will with generator speed memory moduleIt is stored with the successive time sequencing of acquisition to length and isArrayIn,
Array is found out with extrema-finding module againIn maximum valueAnd minimum value, utilize formulaGenerator speed is calculated in position frequency of componentsUnder oscillation amplitude, willIt is input to event
Hinder in judgment module 3.In breakdown judge module 3, initialization oscillation monitoring failure setpoint, compare vibration
Swing amplitudeWith setting valueSize, if, then the component is vibrated
Monitor corresponding error code flag bitIt is assigned a value of 1, each component oscillation monitoring fault flag so can be obtainedExtremely, willExtremelyIt is input in fault processing module
4.In 4 in fault processing module, the corresponding failure in i-th of component monitoring point of initialization quotes delay time, count the error code flag bit of inputFor 1 accumulated time, and when with corresponding delay
BetweenIt is compared, if accumulated time is greater than delay time, activates the shutdown procedure of unit to protect and shut down, and
It will test abnormal unit status code Chinese annotation to show to man-machine interface, prompt technical staff's processing.
Although by being described in conjunction with specific embodiments to the present invention, in the art skilled person, root
It will be apparent according to the substitution made, modification and variation mentioned above.Therefore, in such substitution, modifications and variations
When falling into spirit and scope of the claims of the invention, it should be included in the present invention.
Claims (5)
1. a kind of wind-driven generator group parts vibrate monitoring method, it is characterised in that：It mainly include bandpass filter, oscillation amplitude
Detection module, breakdown judge module and fault processing module, wherein oscillation amplitude detection module includes generator speed storage
Module and extrema-finding module, monitoring method include the following steps：
Step S1：Current generator rotational speed omega is measured using measuring deviceg；
Step S2：It will need the frequency f of monitoring componenti(i=1,2,3...m, m are the total number of parts for needing to monitor) and step S
The generator speed ω measured in 1gIt is input in i-th of bandpass filter, is f by centre frequencyiBand-pass filter
After obtain the oscillation of corresponding generator speedWherein fiFor the intrinsic frequency or coupling frequency for needing monitoring component；
Step S3：The generator speed oscillation that step S2 is filtered outIt is input in i-th of oscillation amplitude detection module, counts
Calculate position frequency of components fiUnder generator speed oscillation amplitudeThe oscillation amplitude detection module includes following step
Suddenly：
Step S31：Use the position frequency of components f of inputi, calculate a cycle of oscillation corresponding acquisition pointsIts
Middle TsFor the systematic sampling time；
Step S32：It, will using generator speed memory moduleIt is stored to length with the successive time sequencing of acquisition as nsi's
Array Ng [1..nri] in；
Step S33：Using extrema-finding module, array Ng [1..n in step S32 is found outsi] in maximum valueWith
Minimum valueUtilize formulaGenerator speed is calculated in position frequency of components fiUnder
Oscillation amplitude
Step S4：By the calculated generator speed oscillation amplitude of step S3It is input in i-th of breakdown judge module, counts
Calculate corresponding error code flag bit
Step S5：By the calculated error code flag bit of step S4It is input in fault processing module, controls
Generator protection shuts down and shows fault message.
2. a kind of wind-driven generator group parts according to claim 1 vibrate monitoring method, it is characterised in that：The step
Breakdown judge module in rapid S4 includes the following steps：
Step S41：Initialization oscillation stoppage protection value gInitGenSpdMax_fi；
Step S42：CompareWith setting value gInitGenSpdMax_fiSize, if Δ ωgfi> gInitGenSpdMax_
fi, then exportIt is 1, whereingInitGenSpdMax_fi、Respectively i-th
Generator speed oscillation amplitude, stoppage protection value and the error code flag bit of a component monitoring point.
3. a kind of wind-driven generator group parts according to claim 1 vibrate monitoring method, it is characterised in that：The step
Fault processing module in rapid S5 includes the following steps：
Step S51：It initializes the corresponding failure in i-th of component monitoring point and quotes delay time gInitErrDelay_fi；
Step S52：Count error code flag bitFor 1 accumulated time, and with corresponding delay time
gInitErrDelay_fiIt is compared, if accumulated time is greater than delay time setting value, the shutdown procedure of unit is activated to protect
Shield is shut down, and the status code Chinese annotation for activating stoppage protection is shown to man-machine interface.
4. a kind of wind-driven generator group parts according to claim 1 vibrate monitoring method, it is characterised in that：The step
Generator speed memory module includes the following steps in rapid S32：
Step S321：Initialisation unit frequency fiUnder generator speed storage location variableIt is 1；
Step S322：Current generator tach signal that generator speed measuring device is measured and filteredAssignment
To aray variable
Step S323：
Step S324：IfStep S322-S324 is then repeated, otherwise return step S321.
5. a kind of wind-driven generator group parts according to claim 1 vibrate monitoring method, it is characterised in that：The step
Revolving speed extrema-finding module includes the following steps in rapid S33：
Step S331：Initialize k=1, revolving speed maximum valueMinimum value
Step S332：Compare Ng [k] withIfThenCompare Ng [k] with
IfThen
Step S333：K=k+1；
Step S334：If k≤nsi, then repeatedly step S332-S334, no to then follow the steps S335；
Step S335：Generator speed is calculated in position frequency of components fiUnder oscillation amplitude
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| CN107024617B (en) * | 2017-04-21 | 2019-11-05 | 上海电气集团股份有限公司 | A kind of motor torque frequency of oscillation discrimination method |
| CN111220383A (en) * | 2019-11-14 | 2020-06-02 | 东华大学 | Transmission equipment weak fault detection method based on oscillation resonance theory |
| CN112985578B (en) * | 2019-12-13 | 2023-09-26 | 中车株洲电力机车研究所有限公司 | Wind turbine generator set resonance diagnosis method and device |
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| CN102102629A (en) * | 2011-01-17 | 2011-06-22 | 东南大学 | On-line data acquisition and analysis device of wind generating set |
| WO2012000506A2 (en) * | 2010-06-28 | 2012-01-05 | Vestas Wind Systems A/S | A method for performing condition monitoring in a wind farm |
| CN102829977A (en) * | 2012-08-23 | 2012-12-19 | 天津瑞能电气有限公司 | Method for monitoring low-frequency vibration of wind power generation set |
| WO2015033946A1 (en) * | 2013-09-04 | 2015-03-12 | Ntn株式会社 | Status monitoring device for wind power generation device |
| EP2865889A1 (en) * | 2013-10-24 | 2015-04-29 | Siemens Aktiengesellschaft | Damping of wind turbine drive train oscillations |
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Patent Citations (5)
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|---|---|---|---|---|
| WO2012000506A2 (en) * | 2010-06-28 | 2012-01-05 | Vestas Wind Systems A/S | A method for performing condition monitoring in a wind farm |
| CN102102629A (en) * | 2011-01-17 | 2011-06-22 | 东南大学 | On-line data acquisition and analysis device of wind generating set |
| CN102829977A (en) * | 2012-08-23 | 2012-12-19 | 天津瑞能电气有限公司 | Method for monitoring low-frequency vibration of wind power generation set |
| WO2015033946A1 (en) * | 2013-09-04 | 2015-03-12 | Ntn株式会社 | Status monitoring device for wind power generation device |
| EP2865889A1 (en) * | 2013-10-24 | 2015-04-29 | Siemens Aktiengesellschaft | Damping of wind turbine drive train oscillations |
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Address after: 200241, 8 floor, building 555, Dongchuan Road, Minhang District, Shanghai. Patentee after: Shanghai Electric Wind Power Group Co., Ltd. Address before: 200241 4, 4 building, 555 Dongchuan Road, Minhang District, Shanghai. Patentee before: Shanghai Sewind Co., Ltd. |
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Address after: 200241 Dongchuan Road, Shanghai, No. 555, building No. 8, floor, floor, No. Patentee after: Shanghai Electric Wind Power Group Co., Ltd Address before: 8th Floor, No. 555 Dongchuan Road, Minhang District, Shanghai, 200241 Patentee before: Shanghai Electric Wind Power Group Co., Ltd. |