CN105179179B - A kind of the total state monitoring method and system of wind power generating set - Google Patents

A kind of the total state monitoring method and system of wind power generating set Download PDF

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CN105179179B
CN105179179B CN201510415276.0A CN201510415276A CN105179179B CN 105179179 B CN105179179 B CN 105179179B CN 201510415276 A CN201510415276 A CN 201510415276A CN 105179179 B CN105179179 B CN 105179179B
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blade
wind power
power generating
monitoring
tower
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CN105179179A (en
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张彪
岳宁
刘晓枫
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Beijing Hannenghua Science & Technology Co Ltd
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Beijing Hannenghua Science & Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention discloses the total state monitoring method and system of a kind of wind power generating set, this method includes:The state of multiple components of monitoring wind power generating set in real time;For each component, according to its condition adjudgement, whether the component breaks down;When judging one or more component malfunctions of wind power generating set, warning message is sent.The present invention is directed to the service requirement of wind power generating set, it proposes a kind of more advanced, more comprehensively, more accurate condition monitoring and fault diagnosis scheme, the program is not under the premise of influencing wind power generating set normal operation, pass through the condition monitoring of multiple components to wind power generating set, fault diagnosis and alert process, staff may be implemented to the comprehensive of wind power generating set operating status, real-time remote monitoring, improve the promptness to wind power generating set failure response, validity and accuracy, ensureing the reliable and stable operation of unit, unit maintenance cost etc. is reduced to have great importance.

Description

A kind of the total state monitoring method and system of wind power generating set
Technical field
The present invention relates to the total state monitoring method of wind power generation field more particularly to a kind of wind power generating set and it is System.
Background technology
Can the failure mechanism of wind power generating set be sufficiently complex, and influence factor is numerous, be to influence wind power generating set grow The key factor of phase stable operation.Complete set, comprehensive wind power generating set condition monitoring and fault diagnosis scheme are established, it is right In correctly evaluation operating states of the units, prevent and reduce the generation of unit failure, realizes that pre-emptive maintenace has important meaning.
Invention content
In view of the above problems, the present invention provides the total state monitoring methods and system of a kind of wind power generating set, with solution Certainly the above problem or solve the above problems at least partly.
One side according to the present invention provides a kind of total state monitoring method of wind power generating set, this method packet It includes:
The state of multiple components of monitoring wind power generating set in real time;
For each component, according to its condition adjudgement, whether the component breaks down;
When judging one or more component malfunctions of wind power generating set, warning message is sent.
Optionally, the state of multiple components of the real-time monitoring wind power generating set, for each component, according to its shape State judges whether the component breaks down including following one or more:
The vibrational state for monitoring each blade of wind power generating set, judges whether to send out according to the vibrational state of each blade The blade of raw failure;
The vibrational state for monitoring the main shaft bearing of wind power generating set, judges that main shaft is according to the vibrational state of main shaft bearing It is no to break down;
Whether the vibrational state for monitoring the gear-box of wind power generating set, judge gear-box according to the vibrational state of gear-box It breaks down;
The oil state for monitoring the lubricating oil in the gear-box of wind power generating set, according to the oil of the lubricating oil in gear-box Liquid status judges that the lubricating oil in gear-box whether there is problem;
The vibrational state for monitoring the rotor bearing of the generator of wind power generating set, according to shaking for the rotor bearing of generator Whether dynamic condition adjudgement generator breaks down;
The vibrational state for monitoring the tower of wind power generating set, it is non-to judge whether tower occurs according to the vibrational state of tower It is normal to shake;
The heeling condition for monitoring the tower of wind power generating set, the ground residing for tower is judged according to the heeling condition of tower Whether improper sedimentation is occurred.
Optionally, the vibrational state of each blade of the monitoring wind power generating set, sentences according to the vibrational state of each blade It is disconnected to include with the presence or absence of the blade to break down:
The noise signal for acquiring each blade obtains the frequency domain character of the noise signal of each blade;According to the noise of each blade The frequency domain character of signal judges whether the blade to break down;
Wherein, the frequency domain character of the noise signal according to each blade judges whether that the blade to break down includes It is following one or more:
Analyze different leaves noise signal frequency domain character between difference, for each blade, if the blade with There is exception in difference between the frequency domain character of the current noise signal of other each blades, it is determined that the blade breaks down; Wherein, the difference appearance exception between the frequency domain character of the noise signal of the blade and other any blades includes:The two is worked as Difference between the frequency domain character of preceding noise signal exceeds normal range (NR);
If the frequency domain of the noise signal of a blade reaches frequency range of uttering long and high-pitched sounds, it is determined that event occurs for the blade Barrier;
For each blade, compare the current noise signal of the blade frequency domain character and current rotating speed under standard noise believe Number frequency domain character, if there is exception, it is determined that the blade breaks down.
Optionally, the oil state of the lubricating oil in the gear-box of the monitoring wind power generating set, according in gear-box The oil state of lubricating oil judge that the lubricating oil in gear-box includes with the presence or absence of problem:
Acquire one or more in lubricating oil viscosity, temperature, density, moisture, granule number and the granularity in gear-box It is a, if one or more of the lubricating oil viscosity, temperature, density, moisture, granule number and granularity in gear-box deviate Normal range (NR), then judging the quality of the lubricating oil in gear-box, there are problems.
Optionally, the vibrational state of the tower of the monitoring wind power generating set, judges tower according to the vibrational state of tower Whether cylinder occurs improper shaking:The vibration signal for acquiring tower, obtains the temporal signatures and frequency domain character of vibration signal, If the temporal signatures of the vibration signal of tower and/or the amplitude of frequency domain character and frequency exceed normal range (NR), tower is judged Improper shaking occurs;
The heeling condition of the tower of the monitoring wind power generating set, judges according to the heeling condition of tower residing for tower Whether ground occurs improper sedimentation:The inclination angle of tower is acquired, if the inclination angle of tower exceeds normal range (NR), judges tower Improper sedimentation occurs for the ground residing for cylinder.
Other side according to the present invention provides a kind of total state monitoring system of wind power generating set, the system Including:
Processing module is monitored, the state of multiple components for monitoring wind power generating set in real time;And for for every A component, according to its condition adjudgement, whether the component breaks down;
Alert process module, for judging that one or more components of wind power generating set occur when monitoring processing module When failure, warning message is sent.
Optionally, the monitoring processing module monitors processing procedure for executing one or more of:
The vibrational state for monitoring each blade of wind power generating set, judges whether to send out according to the vibrational state of each blade The blade of raw failure;
The vibrational state for monitoring the main shaft bearing of wind power generating set, judges that main shaft is according to the vibrational state of main shaft bearing It is no to break down;
Whether the vibrational state for monitoring the gear-box of wind power generating set, judge gear-box according to the vibrational state of gear-box It breaks down;
The oil state for monitoring the lubricating oil in the gear-box of wind power generating set, according to the oil of the lubricating oil in gear-box Liquid status judges that the lubricating oil in gear-box whether there is problem;
The vibrational state for monitoring the rotor bearing of the generator of wind power generating set, according to shaking for the rotor bearing of generator Whether dynamic condition adjudgement generator breaks down;
The vibrational state for monitoring the tower of wind power generating set, it is non-to judge whether tower occurs according to the vibrational state of tower It is normal to shake;
The heeling condition for monitoring the tower of wind power generating set, the ground residing for tower is judged according to the heeling condition of tower Whether improper sedimentation is occurred.
Optionally, the monitoring processing module, the noise signal for acquiring each blade obtain the noise signal of each blade Frequency domain character;The blade for judging whether to break down according to the frequency domain character of the noise signal of each blade;
Wherein, the monitoring processing module, for executing one or more of breakdown judge process:
Analyze different leaves noise signal frequency domain character between difference, for each blade, if the blade with There is exception in difference between the frequency domain character of the current noise signal of other each blades, it is determined that the blade breaks down; Wherein, the difference appearance exception between the frequency domain character of the noise signal of the blade and other any blades includes:The two is worked as Difference between the frequency domain character of preceding noise signal exceeds normal range (NR);
If the frequency domain of the noise signal of a blade reaches frequency range of uttering long and high-pitched sounds, it is determined that event occurs for the blade Barrier;
For each blade, compare the current noise signal of the blade frequency domain character and current rotating speed under standard noise believe Number frequency domain character, if there is exception, it is determined that the blade breaks down.
Optionally, the monitoring processing module, for acquiring the lubricating oil viscosity in gear-box, temperature, density, water Point, one or more of granule number and granularity, if lubricating oil viscosity, temperature, density, moisture in gear-box, One or more of grain number and granularity deviate normal range (NR), it is determined that there are problems for the quality of the lubricating oil in gear-box.
Optionally, the monitoring processing module, the vibration signal for acquiring tower obtain the temporal signatures of vibration signal And frequency domain character, if the temporal signatures of the vibration signal of tower and/or the amplitude of frequency domain character and frequency exceed normal range (NR), Then determine that improper shaking occurs for tower;And/or the inclination angle for acquiring tower, if the inclination angle of tower exceeds normal range (NR), Then determine that improper sedimentation occurs for the ground residing for tower.
It can be seen from the above, the present invention be directed to wind power generating set service requirement, it is proposed that it is a kind of it is more advanced, more comprehensively, More accurate condition monitoring and fault diagnosis scheme, the program are led under the premise of not influencing wind power generating set normal operation Condition monitoring, fault diagnosis and the alert process to multiple components of wind power generating set are crossed, staff couple may be implemented Comprehensive, the real-time remote monitoring of wind power generating set operating status, improve the promptness to wind power generating set failure response, Validity and accuracy have great importance in ensure the reliable and stable operation of unit, reduce unit maintenance cost etc..
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention, And can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can It is clearer and more comprehensible, below the special specific implementation mode for lifting the present invention.
Description of the drawings
Fig. 1 shows a kind of stream of the total state monitoring method of wind power generating set according to an embodiment of the invention Cheng Tu;
Fig. 2 shows the partial schematic diagrams of wind power generating set according to an embodiment of the invention;
Fig. 3 shows the side view of wind power generating set according to an embodiment of the invention;
Fig. 4 shows the schematic diagram of the gear-box of wind power generating set in accordance with another embodiment of the present invention;
Fig. 5 shows the schematic diagram of the tower of wind power generating set according to an embodiment of the invention;
Fig. 6 shows a kind of signal of the total state monitoring system of wind power generating set according to an embodiment of the invention Figure;
Fig. 7 shows a kind of showing for the total state monitoring system of wind power generating set in accordance with another embodiment of the present invention It is intended to;
Fig. 8 shows the boundary of the total state monitored results of displaying wind power generating set according to an embodiment of the invention Face;
Fig. 9 shows the status monitoring knot of a component of displaying wind power generating set according to an embodiment of the invention The interface of fruit.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.
Fig. 1 shows a kind of stream of the total state monitoring method of wind power generating set according to an embodiment of the invention Cheng Tu.As shown in Figure 1, this method includes:
Step S110 monitors the state of multiple components of wind power generating set in real time.
Step S120, for each component, according to its condition adjudgement, whether the component breaks down.
The process that is described for each component in this step, whether being broken down according to its condition adjudgement component, passes through State change analysis to each component, can not only judge the component for currently having occurred and that failure, although can also judge Currently without the component for breaking down but having occurred early stage degradation phenomena, either currently have occurred and that the component of failure still goes out The now component of early stage degradation phenomena finally can all influence the normal operation of wind power generating set, therefore will all be considered as occurring The component of failure carries out the alert process of next step.
Step S130 sends warning message when judging one or more component malfunctions of wind power generating set.
May include following one or more information in this step, in the warning message:The component that breaks down, the portion Which kind of failure, fault level, suggestion counter-measure etc. has occurred in part;Further, it is also possible to sensitive according to fault level Response to selection Different type of alarms is spent to send relevant warning message.
As it can be seen that method shown in FIG. 1 be directed to wind power generating set service requirement, it is proposed that it is a kind of it is more advanced, more comprehensively, More accurate condition monitoring and fault diagnosis scheme, the program are led under the premise of not influencing wind power generating set normal operation Condition monitoring, fault diagnosis and the alert process to multiple components of wind power generating set are crossed, staff couple may be implemented Comprehensive, the real-time remote monitoring of wind power generating set operating status, improve the promptness to wind power generating set failure response, Validity and accuracy have great importance in ensure the reliable and stable operation of unit, reduce unit maintenance cost etc..
Fig. 2 shows the partial schematic diagrams of wind power generating set according to an embodiment of the invention.As shown in Fig. 2, wind The core component of power generator group includes:Blade 210, main shaft 220, gear-box 230, generator 240 and tower 250.Wind-force is sent out Wind energy is converted into mechanical energy by motor group by multiple blades 210 first, then by transmission systems such as main shaft 220, gear-boxes 230 Electric energy is converted mechanical energy into generator 240, to realize wind-power electricity generation.Wherein, blade 210 is that wind power generating set absorbs The critical component of wind energy, long-term outdoor work is in harsh environment, it is difficult to avoid by factors such as humidity corrosion, fitful wind or lightning strokes Destruction and the potential faults such as fatigue crack that generate of long-play;Main shaft 220 and gear-box 230 are connection blades 210 With generator 240, the main load bearing component of wind energy conversion and transmittance process is realized, it is short when wind power generating set meets with fitful wind Temporarily frequent shock loading will be transmitted to main shaft 220 and gear-box 230 from blade 210, and bearing and gear therein is caused to be sent out The failures such as raw abrasion, spot corrosion, crackle, surface peeling, broken teeth, flank of tooth fatigue, gluing;Generator 240 is responsible for converting mechanical energy For electric energy and be electrical system power supply, longtime running in variable working condition and electromagnetic environment, be easy to happen Generator Vibration it is excessive, hair The failures such as motor overheating, bearing running hot, rotor/stator coil short, rotor broken bar and insulation damages;And the side of tower 250 Position and stability are to ensure that the premise that above-mentioned wind-power electricity generation process is smoothed out.The failure of these components will all lead to wind-power electricity generation The abnormal running of unit.
Therefore, in order to more comprehensively accurately carry out early warning to the failure of wind power generating set, in an embodiment of the present invention, The multiple components for the wind power generating set that the total state monitoring method of wind power generating set is monitored include:Wind power generating set Blade, main shaft, gear-box, generator and tower then monitor the state of multiple components of wind power generating set in real time in this method, For each component, according to its condition adjudgement component whether break down including:
1, the blade of wind power generating set is monitored:Monitor the vibrational state of each blade of wind power generating set, root The blade for judging whether to break down according to the vibrational state of each blade.
In the particular embodiment, above-mentioned monitoring process is:The noise signal for acquiring each blade obtains the noise of each blade The frequency domain character of signal, the blade for judging whether to break down according to the frequency domain character of the noise signal of each blade.Wherein, The frequency domain character of noise signal includes:The frequency domain amplitude of noise signal, the average value of the frequency domain amplitude of noise signal, noise signal Frequency domain amplitude root-mean-square value and noise signal frequency domain distribution etc. parameters, the frequency domain character of noise signal can be anti- Reflect the characteristics such as the decibel, energy, frequency distribution of noise signal.In the present embodiment, the above-mentioned noise signal according to each blade The process of frequency domain character failure judgement includes following one or more:
(1) difference between the frequency domain character of the noise signal of analysis different leaves, for each blade, if the blade There is exception in difference between the frequency domain character of the current noise signal of other each blades, it is determined that event occurs for the blade Barrier;Wherein, the difference appearance exception between the frequency domain character of the noise signal of the blade and other any blades includes:The two Difference between the frequency domain character of current noise signal exceeds normal range (NR).
For the wind power generating set that blade does not break down, the frequency of the noise signal of ideally multiple blades Characteristic of field should be identical, but in practical situations, since wind power generating set is when dispatching from the factory assembly, the installation of multiple blades Angle and structure are not full symmetric, cause multiple blades when not breaking down, and noise signal is not exactly the same, noise Between the frequency domain character of signal there are fine differences, the difference not to change with the influence of external environment, referred to as noise signal Systematical difference between frequency domain character.For each two blade, if between the frequency domain character of the noise signal of the two Difference is mismatched with systematical difference, and easy reasoning obtains, and there is the blade to break down in the two;Therefore, work as wind-driven generator Difference between one blade of group and the frequency domain character of the current noise signal of other each blades is mismatched with systematical difference When, it is determined that the blade breaks down.
(2) if the frequency domain of the noise signal of a blade reaches frequency range of uttering long and high-pitched sounds, it is determined that the blade occurs Failure.Under normal circumstances, the frequency range of uttering long and high-pitched sounds is between 6kHz-10kHz, when the frequency domain frequency of the noise signal of a blade Rate range reaches the frequency range of uttering long and high-pitched sounds, and when reaching certain degree, determines that the blade breaks down.
(3) for each blade, compare the current noise signal of the blade frequency domain character and current rotating speed under standard make an uproar The frequency domain character of sound signal, if there is exception, it is determined that the blade breaks down.
In view of Each part is normal, operating status is good in initial launch after manufacture is assembled for each wind power generating set It is good, therefore acquire the noise signal of wind power generating set full rotary regimes of each blade in initial launch, i.e., under normal circumstances Noise signal of each blade under each different rotating speeds, the full rotational speed criteria noise signal as each blade.In acquisition wind in real time After the noise signal of each blade of power generator group, it can be obtained according to the period of the current noise signal of each blade and work as forward Speed;From the standard noise signal obtained in the full rotational speed criteria noise signal of each blade with each blade under current rotating speed, and then obtain Obtain the frequency domain character of standard noise signal under the current rotating speed of each blade.For each blade, compare the current noise of the blade The frequency domain character of standard noise signal under the frequency domain character and current rotating speed of signal, if mismatched degree has exceeded negligible mistake Poor range, it is determined that the blade breaks down.
For example, Fig. 3 shows the side view of wind power generating set according to an embodiment of the invention, show to wind-force The monitoring of the blade of generating set.As shown in figure 3, the wind power generating set includes:Three blades 210 (due to visual angle, are schemed Two blades 210 are only shown in 3), cabin 260 and tower 250.In order to realize the blade to wind power generating set shown in Fig. 3 Signal picker 310 is mounted on the top position of the cabin 260 of wind power generating set, certainly, signal by the real-time monitoring of state Collector 310, which can also be mounted on other and can receive, to be stablized, on the position of the noise signal of signal-to-noise ratio height, high sensitivity, Wherein, signal picker 310 can be sound pick-up or sound pick-up array, and the sound pick-up or sound pick-up array can be put into cochlea knot In structure, stronger directionality is made it have.
2, the main shaft of wind power generating set is monitored:The vibrational state of the main shaft bearing of wind power generating set is monitored, Judge whether main shaft breaks down according to the vibrational state of main shaft bearing.
3, the gear-box of wind power generating set is monitored:The vibrational state of the gear-box of wind power generating set is monitored, Judge whether gear-box breaks down according to the vibrational state of gear-box.
4, since the performance of the lubricating oil in the gear-box of wind power generating set can influence the normal of wind power generating set Operating, therefore method provided by the invention is also monitored the lubricating oil in the gear-box of wind power generating set:Monitor wind-force The oil state of lubricating oil in the gear-box of generating set judges gear-box according to the oil state of the lubricating oil in gear-box In lubricating oil whether there is problem.
In the particular embodiment, above-mentioned monitoring process is:Acquire gear-box in lubricating oil viscosity, temperature, density, One or more of moisture, granule number and granularity, if lubricating oil viscosity, temperature, density, moisture in gear-box, One or more of granule number and granularity deviate normal range (NR), then judge that the quality of the lubricating oil in gear-box exists and ask Topic.Wherein, lubricating oil viscosity is widely varied the failure that characterize gear oil;The temperature of lubricating oil increases characterization wind-force hair The gearbox temperature of motor group increases, and needs to shut down more than 55 DEG C;The density of lubricating oil increases, deducibility be mixed into heavy oil product or Metallic particles, the density of lubricating oil reduce deducibility and have been mixed into light-end products or water;Moisture is the natural enemy of lubricating oil, can cause to moisten Lubricating oil chemical property, rustless property reduce, generation foam causes high liquid level warning, viscosity reduces etc.;In lubricating oil Grain number and granularity can auxiliary judgment gear, babinet, bearing abrasion condition, the cumulative growth slope of granule number and granularity More than abrasion quickening or the generation of failure that will characterize wind power generating set internal part to a certain degree.
For example, Fig. 4 shows the schematic diagram of the gear-box of wind power generating set in accordance with another embodiment of the present invention, show The monitoring of the lubricating oil in the gear-box to wind power generating set is gone out.As shown in figure 4, being existed using oil liquid monitoring sensor 410 Line monitors the oil state in the bypass oil pipe of gear-box 230 in real time, confirms the performance of lubricating oil and the operation shape of gear-box 230 State.The monitoring process carries out periodically extracting oil sample without staff, can find that lubricating oil is abnormal and gear-box is abnormal in time.
5, the generator of wind power generating set is monitored:Monitor the rotor bearing of the generator of wind power generating set Vibrational state judges whether generator breaks down according to the vibrational state of the rotor bearing of generator;
6, the tower of wind power generating set is monitored:
(1) vibrational state of the tower of monitoring wind power generating set, judges whether tower is sent out according to the vibrational state of tower Raw improper shaking.In the particular embodiment, above-mentioned monitoring process is:The vibration signal of tower is acquired, vibration signal is obtained Temporal signatures and frequency domain character, if the temporal signatures of the vibration signal of tower and/or the amplitude of frequency domain character and frequency are super Go out normal range (NR), then judges that improper shaking occurs for tower;Wherein it is possible to acquire tower in water using vibration acceleration sensor Square upward vibration signal.
(2) heeling condition of the tower of monitoring wind power generating set, judges according to the heeling condition of tower residing for tower Whether ground occurs improper sedimentation.In the particular embodiment, above-mentioned monitoring process is:The inclination angle for acquiring tower, if tower The inclination angle of cylinder exceeds normal range (NR), then judges that improper sedimentation occurs for the ground residing for tower;Wherein it is possible to be sensed using inclination angle Device acquires the inclination angle of tower.
For example, Fig. 5 shows the schematic diagram of the tower of wind power generating set according to an embodiment of the invention, show Monitoring to the tower of wind power generating set.As shown in Figure 5, on the one hand, monitor tower using vibration acceleration sensor 510 250 vibration acceleration in the horizontal direction, and then the vibration signal of tower 250 in the horizontal direction is obtained, analyze the vibration The temporal signatures and frequency domain character of signal, it can be found that tower resonance caused by long-term low-frequency vibration, tower damage of components, with And wind power generating set faces the security risks such as the risk of falling tower.On the other hand, tower 250 is monitored using obliquity sensor 520 Inclination angle, it can be found that the inclination of wind power generating set and wind-power electricity generation caused by differential settlement due to ground residing for tower Unit faces the security risks such as the risk of falling tower.
By the monitoring to above-mentioned six aspects of wind power generating set, it can relatively judge that wind-force is sent out comprehensively, accurately The source of failure and specifying information of motor group can occur to carry out timely and effectively early warning in significant trouble early period, and then can Corresponding counter-measure is formulated for failure, the unnecessary loss generated due to burst accident is reduced and maintenance shut-downs is overhauled and brought Power generation loss, reduce the maintenance maintenance cost of wind power generating set, improve global reliability, the stability of wind power generating set With comprehensive benefit.
Fig. 6 shows a kind of signal of the total state monitoring system of wind power generating set according to an embodiment of the invention Figure.As shown in fig. 6, the total state monitoring system 600 of the wind power generating set includes:
Processing module 610 is monitored, the state of multiple components for monitoring wind power generating set in real time;And for for Each component, according to its condition adjudgement, whether the component breaks down.
Alert process module 620, one or more components for judging wind power generating set when monitoring processing module When breaking down, warning message is sent.
As it can be seen that device shown in fig. 6 be directed to wind power generating set service requirement, it is proposed that it is a kind of it is more advanced, more comprehensively, More accurate condition monitoring and fault diagnosis scheme, the program are led under the premise of not influencing wind power generating set normal operation Condition monitoring, fault diagnosis and the alert process to multiple components of wind power generating set are crossed, staff couple may be implemented Comprehensive, the real-time remote monitoring of wind power generating set operating status, improve the promptness to wind power generating set failure response, Validity and accuracy have great importance in ensure the reliable and stable operation of unit, reduce unit maintenance cost etc..
In one embodiment of the invention, the monitoring processing module 610 of system shown in Figure 6, for executing following one kind Or a variety of monitoring processing procedures:The vibrational state for monitoring each blade of wind power generating set, sentences according to the vibrational state of each blade It is disconnected to whether there is the blade to break down;The vibrational state for monitoring the main shaft bearing of wind power generating set, according to main shaft bearing Vibrational state judges whether main shaft breaks down;The vibrational state for monitoring the gear-box of wind power generating set, according to gear-box Vibrational state judges whether gear-box breaks down;The oil state of the lubricating oil in the gear-box of wind power generating set is monitored, Judge that the lubricating oil in gear-box whether there is problem according to the oil state of the lubricating oil in gear-box;Monitor wind-driven generator The vibrational state of the rotor bearing of the generator of group, judges whether generator is sent out according to the vibrational state of the rotor bearing of generator Raw failure;The vibrational state for monitoring the tower of wind power generating set, it is non-to judge whether tower occurs according to the vibrational state of tower It is normal to shake;The heeling condition for monitoring the tower of wind power generating set, the ground residing for tower is judged according to the heeling condition of tower Whether base occurs improper sedimentation.
Fig. 7 shows a kind of showing for the total state monitoring system of wind power generating set in accordance with another embodiment of the present invention It is intended to.As shown in fig. 7, the total state monitoring system 700 of the wind power generating set includes monitoring processing module 710 and alert process Module 720, wherein monitoring processing module 710 includes signal acquisition module 711 and analysis and processing module 712.
Data acquisition module 711 is used to acquire the data of the state of multiple components of characterization wind power generating set, and will adopt The data collected are sent to analysis and processing module 712.
Analysis and processing module 712 is used to store the data of the state of multiple components of characterization wind power generating set, and to this Data carry out analyzing processing;For each component, judge whether the component occurs event according to the data for the state for characterizing the component Barrier;When judging one or more component malfunctions of wind power generating set, alert process unit is notified;
Wherein, data acquisition module 711 is installed in monitored wind power generating set, and analysis and processing module 712 is located at Central Control Room is long-range, can be led to by LAN or internet between data acquisition module 711 and analysis and processing module 712 Letter.
Alert process module 720, for after receiving the notice transmitted by analysis and processing module 712, sending alarm signal Breath.
As it can be seen that in the present embodiment, analysis and processing module 712 monitors the number of system as the total state of wind power generating set According to analyzing processing center, the relevant all working process of the storage to institute's gathered data, processing and accident analysis is assumed responsibility for;Analysis Communication between processing module 712 and data acquisition module 711 so that staff can realize long-range to wind-driven generator Comprehensive online grasp of the core component operating status of group, and by the analyzing processing process of analysis and processing module 712, to wind-force The operating condition of the core component of generating set implements comprehensive diagnos, on the basis of substantially mitigating manual operation burden, greatly Ground improves the accuracy to wind power generating set fault diagnosis and fault prediction, to realize that Decision-making of Condition-based Maintenance provides solid data base Plinth.
According to described above, in a preferred embodiment, at the monitoring of the total state monitoring system 700 of wind power generating set Reason module 710 monitoring object include:Lubricating oil, generator in blade, main shaft, gear-box, gear-box and tower, here, Only stressed as representative using the process for monitoring lubricating oil and tower in the monitoring of processing module 710 blade, gear.
Monitor processing module 710 is to the monitoring process of the blade of wind power generating set:Data acquisition module 711 acquires respectively The noise signal of blade is simultaneously sent to analysis and processing module 712, when analysis and processing module 712 carries out the noise signal of each blade The conversion in domain and frequency domain obtains the frequency domain character of the noise signal of each blade;Analysis and processing module 712 is made an uproar further according to each blade The frequency domain character of sound signal judges whether the blade to break down.Wherein, the making an uproar according to each blade of analysis and processing module 712 The frequency domain character of sound signal judges whether that the blade to break down includes following three kinds of modes:Analyze the noise of different leaves Difference between the frequency domain character of signal, for each blade, if the blade and the current noise signal of other each blades There is exception in difference between frequency domain character, it is determined that the blade breaks down;If the frequency of the noise signal of a blade Domain range reaches frequency range of uttering long and high-pitched sounds, it is determined that the blade breaks down;For each blade, compare the current noise of the blade The frequency domain character of standard noise signal under the frequency domain character and current rotating speed of signal, if there is exception, it is determined that the blade is sent out Raw failure.
Monitor processing module 710 is to the monitoring process of the lubricating oil in the gear-box of wind power generating set:Data acquire Module 711 acquires one or more in lubricating oil viscosity, temperature, density, moisture, granule number and granularity in gear-box A, analysis and processing module 712 carries out lubricating oil viscosity, temperature, density, moisture, granule number and the granularity in gear-box Analysis, if one or more of deviate normal range (NR), it is determined that there are problems for the quality of the lubricating oil in gear-box.
Monitor processing module 710 is to the monitoring process of the tower of wind power generating set:On the one hand, data acquisition module The vibration signal of 711 acquisition towers, analysis and processing module 712 carry out the vibration signal of tower the conversion of time domain and frequency domain, obtain Obtain the temporal signatures and frequency domain character of vibration signal, temporal signatures and frequency domain character of the analysis and processing module 712 to vibration signal It is analyzed, if its amplitude and frequency exceed normal range (NR), it is determined that improper shaking occurs for tower.On the other hand, data Acquisition module 711 is used to acquire the inclination angle of tower, and analysis and processing module 712 analyzes the inclination angle of tower, if it exceeds Normal range (NR), it is determined that improper sedimentation occurs for the ground residing for tower.
Analysis and processing module 712 in the total state monitoring system 700 of above-mentioned wind power generating set is receiving, is storing number Analyzing processing is carried out after 711 collected data of acquisition module, then to data, alert process module 720 is reinformed and is reported Alert, each phase data is stored in analysis and processing module 712 in whole process so that analysis and processing module 712 can respond Result in each stage is shown to it in the demand of staff.Fig. 8 shows displaying wind-force according to an embodiment of the invention The interface of the total state monitored results of generating set, the present embodiment implement full shape to multiple wind power generating sets in wind power plant State monitors, and checks that some wind power generating set (is " machine group # as shown in the figure in response to staff:2 ") total state prison The demand for surveying result, interface as shown in Figure 8 is shown to it, which shows the structure chart of wind power generating set, and at this Each monitoring component is identified in structure chart, which illustrates the select button of each monitoring component in the left list, the interface Lower section also illustrates the groundwork state (as shown in the figure includes " restoring normal " or " peak value is more than early warning line ") of each component, with Just staff tentatively understands the working condition of each component.One of component is selected to want to check specifically in response to staff The operation of monitoring result, analysis and processing module 712 can show that interface as shown in Figure 9, Fig. 9 are shown according to the present invention to it The interface of the status monitoring result of one component of the displaying wind power generating set of one embodiment, the interface is to staff's exhibition The specific works state for showing some component, such as the vibration trend of main shaft bearing, the temporal signatures of vibration signal and frequency domain character, into One step, which can also carry out fault diagnosis according to the feature of signal, and diagnostic result is showed staff.As it can be seen that In the present embodiment, staff can check the complete of wind power generating set by remote control as illustrated in figs. 8-9 Status monitoring not only reduces working strength as a result, compared with existing manual inspection method, also improve monitoring sensitivity and Accuracy, wherein the form that shows of the remote control of the total state monitoring system of wind power generating set can be a variety of more Sample, Fig. 8-Fig. 9 shows showing form and should not causing to limit to the remote monitoring scheme in the present invention for remote control System.
It should be noted that Fig. 6-each embodiments shown in Fig. 9 and Fig. 1-each embodiments shown in fig. 5 are corresponding identical, It has above been described in detail, details are not described herein.
In conclusion the present invention is directed to the service requirement of wind power generating set, it is proposed that a kind of more advanced, more comprehensively, more Accurate condition monitoring and fault diagnosis scheme, the program pass through under the premise of not influencing wind power generating set normal operation To condition monitoring, fault diagnosis and the alert process of multiple components of wind power generating set, staff may be implemented to wind Comprehensive, the real-time remote monitoring of power generator group operating status improve the promptness to wind power generating set failure response, have Effect property and accuracy reduce the power generation loss that the unnecessary loss generated due to burst accident and maintenance shut-downs maintenance are brought, carry Global reliability, stability and the comprehensive benefit of high wind power generating set, the human negligence and safety in reduction inspection work are hidden Suffer from, it is poor to accessibilities such as mountain area, seas, to be not easy inspection area particularly suitable, ensureing the reliable and stable operation of unit, reduction unit Maintenance cost etc. has great importance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention It is interior.

Claims (10)

1. a kind of total state monitoring method of wind power generating set, which is characterized in that this method includes:
The state of multiple components of monitoring wind power generating set in real time;
For each component, according to its condition adjudgement, whether the component breaks down;
When judging one or more component malfunctions of wind power generating set, warning message is sent;
The state of multiple components of the real-time monitoring wind power generating set, for each component, according to its condition adjudgement portion Part whether break down including:The vibrational state for monitoring each blade of wind power generating set, sentences according to the vibrational state of each blade It is disconnected to whether there is the blade to break down;
The vibrational state for monitoring each blade of wind power generating set judges whether that event occurs according to the vibrational state of each blade The blade of barrier includes:
The noise signal for acquiring each blade obtains the frequency domain character of the noise signal of each blade;According to the noise signal of each blade Frequency domain character judge whether the blade to break down;The frequency domain character of the noise signal includes:The frequency of noise signal Domain amplitude, the average value of frequency domain amplitude of noise signal, noise signal frequency domain amplitude root-mean-square value and noise signal Frequency domain is distributed;
Also, current rotating speed is obtained according to the period of the current noise signal of each blade;For each blade, compare the blade The frequency domain character of standard noise signal under the frequency domain character and current rotating speed of current noise signal, if there is exception, it is determined that The blade breaks down.
2. the method as described in claim 1, which is characterized in that the shape of multiple components of the real-time monitoring wind power generating set State, whether for each component, it further includes following one or more to be broken down according to its condition adjudgement component:
The vibrational state for monitoring the main shaft bearing of wind power generating set, judges whether main shaft is sent out according to the vibrational state of main shaft bearing Raw failure;
The vibrational state for monitoring the gear-box of wind power generating set, judges whether gear-box occurs according to the vibrational state of gear-box Failure;
The oil state for monitoring the lubricating oil in the gear-box of wind power generating set, according to the fluid shape of the lubricating oil in gear-box State judges that the lubricating oil in gear-box whether there is problem;
The vibrational state for monitoring the rotor bearing of the generator of wind power generating set, according to the vibration shape of the rotor bearing of generator State judges whether generator breaks down;
The vibrational state for monitoring the tower of wind power generating set, it is improper to judge whether tower occurs according to the vibrational state of tower It shakes;
Whether the heeling condition for monitoring the tower of wind power generating set, judge the ground residing for tower according to the heeling condition of tower Improper sedimentation occurs.
3. the method as described in claim 1, which is characterized in that
Wherein, the frequency domain character of the noise signal according to each blade judges whether that the blade to break down includes as follows It is one or more:
Analyze different leaves noise signal frequency domain character between difference, for each blade, if the blade and other There is exception in difference between the frequency domain character of the current noise signal of each blade, it is determined that the blade breaks down;Wherein, There is exception in difference between the frequency domain character of the noise signal of the blade and other any blades:The current noise of the two Difference between the frequency domain character of signal exceeds normal range (NR);
If the frequency domain of the noise signal of a blade reaches frequency range of uttering long and high-pitched sounds, it is determined that the blade breaks down.
4. method as claimed in claim 2, which is characterized in that the lubricating oil in the gear-box of the monitoring wind power generating set Oil state, according to the oil state of the lubricating oil in gear-box judge the lubricating oil in gear-box whether there is problem packet It includes:
One or more of lubricating oil viscosity, temperature, density, moisture, granule number and the granularity in gear-box are acquired, such as One or more of lubricating oil viscosity, temperature, density, moisture, granule number and granularity in fruit gear-box deviate normal Range, then judging the quality of the lubricating oil in gear-box, there are problems.
5. method as claimed in claim 2, which is characterized in that
The vibrational state of the tower of the monitoring wind power generating set, it is non-to judge whether tower occurs according to the vibrational state of tower It normally shakes and includes:The vibration signal for acquiring tower, obtains the temporal signatures and frequency domain character of vibration signal, if tower is shaken The temporal signatures of dynamic signal and/or the amplitude and frequency of frequency domain character exceed normal range (NR), then judge that improper rolling occurs for tower It is dynamic;
The heeling condition of the tower of the monitoring wind power generating set, the ground residing for tower is judged according to the heeling condition of tower Improper sedimentation, which whether occurs, includes:The inclination angle of tower is acquired, if the inclination angle of tower exceeds normal range (NR), judges tower institute Improper sedimentation occurs for the ground at place.
6. the total state of wind power generating set a kind of monitors system, which is characterized in that the system includes:
Processing module is monitored, the state of multiple components for monitoring wind power generating set in real time;And for for each portion Part, according to its condition adjudgement, whether the component breaks down;
Alert process module, one or more component malfunctions for judging wind power generating set when monitoring processing module When, send warning message;
The monitoring processing module, for executing following monitoring processing procedure:Monitor the vibration of each blade of wind power generating set State, the blade for judging whether to break down according to the vibrational state of each blade;
The monitoring processing module, the noise signal for acquiring each blade obtain the frequency domain character of the noise signal of each blade; The blade for judging whether to break down according to the frequency domain character of the noise signal of each blade;The frequency domain of the noise signal is special Sign includes:The frequency domain amplitude of noise signal, the average value of the frequency domain amplitude of noise signal, noise signal frequency domain amplitude it is square The frequency domain of root and noise signal is distributed;Also, it is obtained according to the period of the current noise signal of each blade and works as forward Speed;For each blade, the frequency domain character and standard noise signal under current rotating speed that compare the current noise signal of the blade Frequency domain character, if there is exception, it is determined that the blade breaks down.
7. system as claimed in claim 6, which is characterized in that the monitoring processing module, be additionally operable to execute it is following a kind of or A variety of monitoring processing procedures:
The vibrational state for monitoring the main shaft bearing of wind power generating set, judges whether main shaft is sent out according to the vibrational state of main shaft bearing Raw failure;
The vibrational state for monitoring the gear-box of wind power generating set, judges whether gear-box occurs according to the vibrational state of gear-box Failure;
The oil state for monitoring the lubricating oil in the gear-box of wind power generating set, according to the fluid shape of the lubricating oil in gear-box State judges that the lubricating oil in gear-box whether there is problem;
The vibrational state for monitoring the rotor bearing of the generator of wind power generating set, according to the vibration shape of the rotor bearing of generator State judges whether generator breaks down;
The vibrational state for monitoring the tower of wind power generating set, it is improper to judge whether tower occurs according to the vibrational state of tower It shakes;
Whether the heeling condition for monitoring the tower of wind power generating set, judge the ground residing for tower according to the heeling condition of tower Improper sedimentation occurs.
8. system as claimed in claim 6, which is characterized in that wherein, the monitoring processing module, for executing following one kind Or various faults deterministic process:
Analyze different leaves noise signal frequency domain character between difference, for each blade, if the blade and other There is exception in difference between the frequency domain character of the current noise signal of each blade, it is determined that the blade breaks down;Wherein, There is exception in difference between the frequency domain character of the noise signal of the blade and other any blades:The current noise of the two Difference between the frequency domain character of signal exceeds normal range (NR);
If the frequency domain of the noise signal of a blade reaches frequency range of uttering long and high-pitched sounds, it is determined that the blade breaks down.
9. system as claimed in claim 7, which is characterized in that
The monitoring processing module, for acquire the lubricating oil viscosity in gear-box, temperature, density, moisture, granule number and One or more of granularity, if in lubricating oil viscosity, temperature, density, moisture, granule number and granularity in gear-box One or more deviate normal range (NR)s, it is determined that there are problems for the quality of the lubricating oil in gear-box.
10. system as claimed in claim 7, which is characterized in that
The monitoring processing module, the vibration signal for acquiring tower obtain the temporal signatures and frequency domain character of vibration signal, If the temporal signatures of the vibration signal of tower and/or the amplitude of frequency domain character and frequency exceed normal range (NR), it is determined that tower Improper shaking occurs;And/or the inclination angle for acquiring tower, if the inclination angle of tower exceeds normal range (NR), it is determined that tower Improper sedimentation occurs for residing ground.
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