CN104019000B - The loading spectrum of wind power generating set is determined and perspective maintenance system - Google Patents

The loading spectrum of wind power generating set is determined and perspective maintenance system Download PDF

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CN104019000B
CN104019000B CN201410282778.6A CN201410282778A CN104019000B CN 104019000 B CN104019000 B CN 104019000B CN 201410282778 A CN201410282778 A CN 201410282778A CN 104019000 B CN104019000 B CN 104019000B
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wind
wind power
power generating
data
failure
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CN201410282778.6A
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Chinese (zh)
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CN104019000A (en
Inventor
丁钧
孙樵
王春秀
李卫东
常松山
纪牟赫
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宁夏银星能源股份有限公司
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    • Y02E10/722

Abstract

The present invention relates to a kind of loading spectrum of wind power generating set is determined and perspective maintenance system.Including data acquisition and supervisor control, it is characterized in:The main frame of the data acquisition and supervisor control and Wind turbines master control system connection communication are so as to obtaining operation, the alert data of Wind turbines, the main frame also composes determination unit connection communication respectively so as to the performance load for determining Wind turbines is composed with load of wind turbine generator, also with wind turbine transmission chain collecting unit connection communication so as to gather vibration, noise and the displacement of wind turbine transmission chain, and also it is connected with wind energy turbine set wind-resources distribution data unit.The invention provides a kind of loading spectrum of wind power generating set is determined and perspective maintenance system, running status of the system by detection wind-driven generator, ruuning situation database is set up, the mechanism of blower fan main failure forms is studied, the perspective maintenance to Wind turbines is realized.

Description

The loading spectrum of wind power generating set is determined and perspective maintenance system

Technical field

The present invention relates to a kind of loading spectrum of wind power generating set is determined and perspective maintenance system.

Background technology

The advantage of domestic new cleaning fuel increasingly shows that the continuous of wind power generating set installed capacity is risen, and with The increase of unit operation time, unit start particle matter (such as blade, main shaft bearing, controller etc.) occur successively.Blower fan is transported Row is difficult in maintenance, monitoring system backwardness, deficient Analysis of Failure Mechanism and countermeasure, causes maintenance carry out in time, with And wind regime good when by forced-stopping machine, bring huge economic loss to wind-powered electricity generation operator, therefore highly desirable by perfect unit Maintenance system improves the utilization rate of equipment and installations of Wind turbines, reduces O&M cost.

Content of the invention

An object of the present invention is to provide a kind of loading spectrum of wind power generating set and determines and perspective maintenance system, energy Running of wind generating set situation database is enough set up, while according to fault diagnosis mechanism, realizing to the perspective of wind power generating set Safeguard;

The second object of the present invention is to provide a kind of perspective maintaining method of wind power generating set, can set up wind turbine Group ruuning situation database, while according to fault diagnosis mechanism, realize the perspective maintenance to wind power generating set.

A kind of loading spectrum of wind power generating set is determined and perspective maintenance system, including data acquisition and monitoring control system System, which is particular in that:The main frame of the data acquisition and supervisor control and Wind turbines master control system connection communication So as to obtain operation, the alert data of Wind turbines, the main frame also composes determination unit connection communication with load of wind turbine generator respectively Performance load so as to determine Wind turbines is composed, also with wind turbine transmission chain collecting unit connection communication so as to gathering wind turbine The vibration of group driving-chain, noise and displacement, and also be connected with wind energy turbine set wind-resources distribution data unit.

Wherein load of wind turbine generator spectrum determination unit includes being separately mounted in 3 blades of Wind turbines and 3 change paddle method Optical fiber load transducer at orchid, and radially spaced 120 degree 3 foil gauges altogether that installs on main shaft, so as to be used for Whether the torque that 3 blades of measurement put on main shaft balances, and above-mentioned all the sensors and foil gauge are by DSP and data Collection is connected with the main frame of supervisor control.

Wherein wind turbine transmission chain collecting unit includes being separately mounted to the root of blade of Wind turbines, gear-box, master Acceleration transducer at axle and cabin frame, and the noise transducer at being separately mounted to wheel hub and gear-box, are additionally included in The axially mounted displacement transducer of main shaft, and above-mentioned all the sensors are by DSP and data acquisition and supervisor control Main frame connection.

Wherein wind energy turbine set wind-resources distribution data unit is using the computer for being provided with wind energy turbine set wind-resources distributed data base.

A kind of perspective maintaining method of wind power generating set, which is particular in that, comprises the steps:

(1) first, recorded when Wind turbines normally run respectively by the main frame of data acquisition and supervisor control and Status data during failure, and the performance load spectrum letter of the Wind turbines that determination unit is determined will be composed by load of wind turbine generator Breath, and the vibration of the wind turbine transmission chain gathered by wind turbine transmission chain collecting unit, noise and displacement information, and front State when Wind turbines normally run and status data during failure sets up one-to-one relationship, mark the exception before breaking down Data characteristics, according to the threshold range that the corresponding relation determines the normal run time behaviour of Wind turbines, sets up blower fan actual motion Database;

(2) when the main frame of data acquisition and supervisor control composes determination unit or Wind turbines by load of wind turbine generator Driving-chain collecting unit detect the status data of Wind turbines not in the threshold range of normal run time behaviour after, first with Wind turbines master control system connection communication obtains the operation of current Wind turbines, alert data, then sets up according in step (1) Status data of Wind turbines when normally running and during failure one-to-one relationship, the abnormal data before combination failure is special Levy, by analyzing abnormal signal, find out the potential failure possibility of Wind turbines, so as in the first of running of wind generating set data exception Phase is just made and diagnoses and provide advance fault warning, judges failure and its reason that unit may occur in advance.

The information that inquires about in wind energy turbine set wind-resources distribution data unit is needed in step (2) during analysis abnormal signal, is being given Go out, so as to avoid wind regime good period as far as possible.

Status data when Wind turbines normally run in step (1) and during failure includes that vane propeller-changing angle, blade become Oar speed, the speed of mainshaft, generator speed, wind speed, generated output power, main shaft bearing temperature, high speed shaft bearing temperature, change Oar bearing temperature, generator-temperature detection, gearbox temperature, current transformer temperature and change oar cylinder pressure, energy storage pressure, driftage system Dynamic pressure.

Blower fan actual operating data storehouse is set up in step (1) specifically:

First, according to wind energy turbine set wind-resources data and blower fan technical specification, with GH bladed Wind turbines simulation software meter Calculate the load of each operating mode of unit;Choose representative minute and determine the actual blade loading of blower fan wind field and main shaft load, to imitative After true, discrete processes filtered with actual measurement load data, complete to obtain load of wind turbine generator spectrum time series;

Set drive chain vibration, noise and displacement signal are obtained by wind turbine transmission chain collecting unit, while foundation Blade loading and main shaft load data, and couple the data acquisition of Wind turbines itself and the data of supervisor control;

Then, by data above through extraction and analysis, classification, specifically include load, vibration, displacement, noise signal when Domain, frequency-domain analysis, then according to the failure mode experience that Wind turbines are common, process determines different corresponding to certain failure mode Often corresponding anomaly parameter in data and corresponding failure mode are realized corresponding, so as to look-ahead is quickly positioned by information;

Finally, fan design load and foundation is obtained, improves the perspective maintenance system of wind field, set up failure mode and data Characterize and correspond database and visualization interface.

The invention provides a kind of loading spectrum of wind power generating set is determined and perspective maintenance system and method, the system By detecting the running status of wind-driven generator, ruuning situation database is set up, study the mechanism of blower fan main failure forms, real The now perspective maintenance to Wind turbines.The system can determine unit performance load spectrum, by real-time monitoring unit vibration, make an uproar The states such as sound, rotating speed, in conjunction with unit SCADA (Supervisory Control And Data Acquisition) monitoring system System, collect Wind turbines normally operation and the related data gathered during fault alarm and through process after, set up running of wind generating set Situation database, while according to fault diagnosis mechanism, realize the perspective maintenance to wind power generating set.

Description of the drawings

Accompanying drawing 1 is to set up blower fan actual operating data storehouse theory diagram in the present invention;

Accompanying drawing 2 carries out the theory diagram of fan trouble anticipation for the present invention.

Specific embodiment

As shown in Figure 1, 2, the function of load of wind turbine generator spectrum determination unit (abbreviation module one) is to determine wind-driven generator The performance load spectrum of (blower fan, Wind turbines).The unit becomes paddle method orchid and goes out difference with 3 in 3 blades of wind power generating set Optical fiber load transducer is installed, radially foil gauge is installed every 120 degree in main shaft, for detecting that 3 blades act on main shaft Torque.Sensor, foil gauge signal through DSP process after, by Data Discretization after, rejecting abnormalities data take average, by unit not Same operating condition, determines the loading spectrum of wind generator set blade, wheel hub, main shaft.

Wind turbine transmission chain collecting unit (abbreviation module two) mainly gathers vibration, noise and the position of unit driving-chain Move.Acceleration transducer is installed in root of blade, gear-box, main shaft and cabin frame specifically, the low order for monitoring blade is waved, put The intrinsic frequency of vibration frequency, the vibration frequency of gear-box and pylon, and signal time domain, frequency-domain analysis are completed by DSP;In wheel hub and Noise transducer is installed at gear-box, monitors unit driving-chain noise situations;Displacement transducer, collection are installed at main shaft bearing Main shaft axial displacement signal.

Data acquisition coordinates SCADA softwares with supervisor control (abbreviation module three) using monitoring system is coupled, with wind The data when communication of machine master control system obtains unit operation, reports to the police, including becoming propeller angle, pitch rate, main shaft rotating speed, generating The data such as machine rotating speed, wind speed, power, temperature and pressure.

Wind energy turbine set wind-resources distribution data unit (abbreviation module four) is provided with the computer of database.The unit record wind The wind-resources data of field anemometer tower, used as the criterion for estimating the recent generated energy of blower fan.

Perspective maintaining method is specific as follows:

First, record Wind turbines normally run and status data during failure, and the performance load of system module one is composed The integrated signals such as data, the vibration noise displacement signal of module two, the generating unit speed of module three, set up according to operating mode and correspond Relation, determines after Treatment Analysis that unit is normal service data (and threshold value scope), marks the abnormal data before breaking down Historical data is set up blower fan actual operating data storehouse by feature.

When system detectio is to unit data exception, first, according to module three determine unit operating mode, obtain generating unit speed, The relevant informations such as pitch angle.Under this operating mode, according to one criterion unit of module with the presence or absence of load exception, machine group parts are caused to be lost Effect.Further according to module two, whether detection unit driving-chain vibrates excessive or produces axial displacement, by analyzing abnormal signal, look for It has the potential failure of unit possible, finds defect frequency on frequency spectrum.Judge at the data unit operation exception initial stage, carry out pre- Fault warning is surveyed, failure and its reason that unit may occur is judged.Meanwhile, wind regime information of the system according to module four, as far as possible Avoid wind regime good period, timely repair and maintenance Wind turbines.

On the other hand, due to the control strategy of wind power generating set electric-control system, need according to design load and wind energy turbine set Wind regime be optimized.Therefore, the Wind turbines multiple malfunctions for the system being detected, the loading spectrum that binding modules one are determined, Optimize the control strategy of blower fan independent pitch system, to reach balance rack load, reduce the purpose of unit acceleration, raising sets Standby reliability.

By taking two MW class wind turbine group failures of certain company's maintenance as an example:

Example one:The alarm of one typhoon group of motors is abnormal for high speed shaft operating, finds that glue occurs in high speed axle bearing after tearing machine check open Close, do not result in miscellaneous part failure, maintenance cost general 20,000 or so, but generating full phase is in due to the maintenance period, Thereby result in full phase generated energy loss 200,000.

If adopting perspective maintenance strategy, on the one hand completely can be according to wind-resources distribution data unit (abbreviation module Four) maintenance for avoiding the full phase is realized.On the other hand, bearing gluing reason is probably excessive by load or temperature control failure is caused Bearing temperature is overheated.Here, load is excessive can be judged by loading spectrum determination unit (abbreviation module one) module, if bearing is long-term Operate under the operating mode beyond design load, system judges failure cause, the control strategy for adjusting pitch-controlled system can be passed through Reduce shaft strength, reduce the possibility that the failure occurs;If temperature control failure causes bearing temperature overheated, bearing glue is caused Close, can be judged by the temperature sensor at high speed axle bearing by data acquisition and supervisor control (abbreviation module three) Failure cause, and change temperature detect switch (TDS) solution unit failure.

Example two:Another is that gear, bearing destructive failure occur, and gear-box is judged to scrap, and disassembles gear-box analysis Reason is:Mould assembling bolt looseness, does not find that operation exception, gear and bearing, through long-time dislocation operation, are finally scrapped, directly in time Connect economic loss 700,000.

Such case just can be judged at the gear operation not normal initial stage completely.When gear-box mould assembling bolt looseness, Necessarily cause to be driven chain vibration, noise or malposition, application wind turbine transmission chain collecting unit (abbreviation module two) collection Acceleration, noise and displacement signal, judge these data under the corresponding operating mode of unit whether in normal threshold range.When When occurring abnormal, reason is investigated, find mould assembling bolt looseness, timely fastening bolt, it is to avoid loss.

For the wind energy turbine set of a phase 50MW capacity, the foundation of perspective maintenance system is completed, maintenance cost is substantially reduced, 2% calculating of estimated reduction degree electricity cost, can save 2,000,000 maintenance cost every year.Carry out in advance and safeguard preparation, to going out Existing multiple stage failure can be lifted with reasonable arrangement and spare part, and repeatedly maintenance is combined.By following the trail of the failure mode of blower fan, The maintenance intervals of blower fan can be extended;By following the trail of the state of blower fan, wind field is it is anticipated that time for continuing to run with of blower fan.Pass through The application implementation of the present invention, it is possible to decrease the maintenance cost of Wind turbines, improves unit equipment utilization rate, so as to greatly improve wind-powered electricity generation The economic benefit of field operation.

Claims (4)

1. the perspective maintaining method of a kind of wind power generating set, it is characterised in that comprise the steps:
(1)First, recorded when wind power generating set is normally run respectively by the main frame of data acquisition and supervisor control and Status data during failure, and the operation of the wind power generating set determined by wind power generating set loading spectrum determination unit is carried Lotus spectrum information, and vibration, the noise of the driving chain of wind generating set gathered by driving chain of wind generating set collecting unit And displacement information, status data when normally being run with aforementioned wind power generating set and during failure set up one-to-one relationship, marked Remember the abnormal data feature before breaking down, according to the threshold that the corresponding relation determines the normal run time behaviour of wind power generating set Value scope, sets up wind power generating set actual operating data storehouse;
(2)When data acquisition passes through wind power generating set loading spectrum determination unit or wind-power electricity generation with the main frame of supervisor control Set drive chain collecting unit detects the status data of wind power generating set not in the threshold range of normal run time behaviour Afterwards, operation, the alert data of current wind generating set are obtained with wind generating set main control system connection communication first, then According to step(1)The one-to-one relationship of the status data when wind power generating set of middle foundation is normally run and during failure, knot Close the abnormal data feature before failure, by analyzing abnormal signal, find out the potential failure of wind power generating set may, so as to The wind power generating set service data abnormal initial stage is just made and diagnoses and provide advance fault warning, judges unit in advance The failure that may occur and its reason.
2. the perspective maintaining method of wind power generating set as claimed in claim 1, it is characterised in that:Step(2)Middle analysis The information that inquires about in wind power plant wind-resources distribution data unit is needed during abnormal signal, in advance fault warning is given Rational repair and maintenance opportunity is informed, so as to avoid wind regime good period as far as possible.
3. the perspective maintaining method of wind power generating set as claimed in claim 1, it is characterised in that:Step(1)Middle wind-force Status data when generating set normally runs and during failure includes vane propeller-changing angle, vane propeller-changing speed, the speed of mainshaft, sends out Motor speed, wind speed, generated output power, main shaft bearing temperature, high speed shaft bearing temperature, pitch variable bearings temperature, generator Temperature, gearbox temperature, current transformer temperature and change oar cylinder pressure, energy storage pressure, yaw brake pressure.
4. the perspective maintaining method of wind power generating set as claimed in claim 1, it is characterised in that:Step(1)Middle foundation Wind power generating set actual operating data storehouse is specifically:
First, according to wind power plant wind-resources data and wind power generating set technical specification, with GH bladed wind-driven generators Group simulation software calculates the load of each operating mode of unit;Choose representative minute and determine the actual blade loading of wind power generating set With main shaft load, to emulate and actual measurement load data is filtered, after discrete processes, when completing to obtain wind power generating set loading spectrum Between sequence;
Set drive chain vibration, noise and displacement signal are obtained by driving chain of wind generating set collecting unit, while foundation Blade loading and main shaft load data, and couple the data acquisition of wind power generating set itself and the data of supervisor control;
Then, by data above through extraction and analysis, classification, load, vibration, displacement, the time domain of noise signal, frequently are specifically included Domain analysis, then according to the failure mode experience that wind power generating set is common, process determines different corresponding to certain failure mode Often corresponding anomaly parameter in data and corresponding failure mode are realized corresponding, so as to look-ahead is quickly positioned by information;
Finally, wind power generating set design load and foundation is obtained, improves the perspective maintenance system of wind power plant, set up failure Form corresponds database and visualization interface with data characterization.
CN201410282778.6A 2014-06-23 2014-06-23 The loading spectrum of wind power generating set is determined and perspective maintenance system CN104019000B (en)

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CN105760610A (en) * 2015-12-17 2016-07-13 南京航空航天大学 Engine multi-parameter using related load spectrum simulation method based on main component analysis
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CN106050580B (en) * 2016-08-17 2018-10-23 国电联合动力技术有限公司 A kind of driving chain of wind generating set fault diagnosis method and system
CN106368813B (en) * 2016-08-30 2018-09-25 北京协同创新智能电网技术有限公司 A kind of abnormal alarm data detection method based on multivariate time series
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GB201617584D0 (en) * 2016-10-17 2016-11-30 Romax Technology Limited Determining loads on a wind turbine
CN108760318B (en) * 2018-08-31 2020-04-21 西安热工研究院有限公司 Fault detection method for variable-pitch bearing of wind turbine
CN109854446A (en) * 2018-12-11 2019-06-07 山东瑞其能电气有限公司 A kind of control system guaranteeing aerogenerator unit safe
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