CN109667728A - Fault detection method and device for wind generating set rotating speed sensor - Google Patents
Fault detection method and device for wind generating set rotating speed sensor Download PDFInfo
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/80—Diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/304—Spool rotational speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a fault detection method and a fault detection device for a rotating speed sensor of a wind generating set, wherein the fault detection method comprises the following steps: obtaining the measuring rotating speeds of a plurality of rotating speed sensors of the wind generating set; obtaining the predicted rotating speed of the rotating speed sensor at the current moment according to the measured rotating speeds of the rotating speed sensor at N moments before the current moment, wherein N is an integer greater than or equal to 0; and judging the running state of the rotation speed sensor according to the difference value of the predicted rotation speed and the measured rotation speed of the rotation speed sensor at the current moment. By adopting the technical scheme in the embodiment of the invention, the abnormal rotating speed sensor can be accurately identified, so that the influence of the measured data of the abnormal rotating speed sensor on the control rotating speed of the wind driven generator set is eliminated, the rotating speed failure shutdown frequency caused by the rotating speed failure misjudgment is reduced, and the power generation loss of the wind driven generator set is reduced.
Description
Technical field
The present invention relates to technical field of wind power generation more particularly to a kind of events for wind power generating set speed probe
Hinder detection method and device, storage medium.
Background technique
Wind power generating set generally has multiple speed probes, and the measuring principle of these devices is different, and utilization is multiple
The measurement revolving speed Collaborative Control wind power generating set of speed probe is run, and can be improved the reliability of wind power generating set.Mesh
Before, the revolving speed error protection strategy of wind power generating set are as follows: when any one revolving speed is more than fault threshold, wind power generating set
Impeller will be triggered to overrun failure and shut down, when any two measurement rotating speed difference is more than setting secure threshold, wind-power electricity generation
Unit will trigger revolving speed and compare failure and shut down.
In the prior art, above-mentioned error protection plan is mainly executed by the rotary speed data that speed probe directly measures
Slightly, but when actual motion, some speed probe in multiple speed probes is likely to occur failure or performance is unstable etc.
Problem, leading to measurement data, there are data exception or data jumps, influence the correctness of wind power generating set control revolving speed, lead
Reason revolving speed failure is judged by accident and revolving speed disorderly closedown frequency is caused to increase, and causes the generated energy of wind power generating set to lose larger.
Summary of the invention
The embodiment of the invention provides a kind of fault detection method for wind power generating set speed probe and device,
Abnormal speed probe can be recognized accurately in storage medium, to exclude the measurement data of abnormal speed probe to wind-force
The influence of generator unit allocation revolving speed reduces revolving speed disorderly closedown frequency caused by due to the erroneous judgement of revolving speed failure, reduces wind-force
The generated energy of generating set loses.
In a first aspect, the embodiment of the invention provides a kind of fault detections of speed probe for wind power generating set
Method, comprising:
Obtain the measurement revolving speed of multiple speed probes of wind power generating set；
According to speed probe in the measurement revolving speed at the top n moment at current time, speed probe is obtained when current
The prediction revolving speed at quarter, N are the integer more than or equal to 0；
According to speed probe in the prediction revolving speed at current time and the difference of measurement revolving speed, the fortune of speed probe is determined
Row state.
In a kind of possible embodiment of first aspect, according to speed probe current time the top n moment
Measurement revolving speed, obtain speed probe in the prediction revolving speed at current time, comprising: when N be more than or equal to 1 when, successively according to turn
Fast sensor calculates speed probe and is working as certainly in prediction revolving speed and measurement revolving speed from the forward n-th moment at current time
The prediction revolving speed at preceding forward the N-1 moment at moment, until speed probe is calculated from current time the forward 1st
The prediction revolving speed at a moment；Turned in the prediction revolving speed from forward 1st moment at current time with measurement according to speed probe
Speed obtains speed probe in the prediction revolving speed at current time；When N be equal to 0 when, by speed probe current time measurement
Revolving speed, as speed probe current time prediction revolving speed.
In a kind of possible embodiment of first aspect, according to speed probe from current time forward N
The prediction revolving speed and measurement revolving speed at a moment, calculate speed probe in the prediction from forward the N-1 moment at current time
Revolving speed, comprising: calculate speed probe from the prediction revolving speed at current time forward n-th moment and the first weighted factor
First product；Speed probe is calculated from the prediction revolving speed at current time forward n-th moment and the second weighted factor
Second product；By the sum of first the second product of sum of products, as speed probe from forward the N-1 moment at current time
Prediction revolving speed；Wherein, the first weighted factor and the second weighted factor, which are respectively greater than 0 and are added, is equal to 1.
In a kind of possible embodiment of first aspect, according to speed probe current time prediction revolving speed and
Revolving speed is measured, determines the operating status of speed probe, comprising: if speed probe is in the prediction revolving speed at current time and measurement
The difference of revolving speed is more than or equal to predetermined deviation threshold value, then determines the operating status of the speed probe for exception；If revolution speed sensing
Device is less than predetermined deviation threshold value in the prediction revolving speed at current time and the difference of measurement revolving speed, then determines the operation of speed probe
State is normal；Alternatively, if speed probe predicts revolving speed and measurement revolving speed current time in the first predetermined amount of time
Difference then determines the operating status of speed probe for exception all greater than predetermined deviation threshold value is equal to；If the first predetermined time
In section, speed probe is in the prediction revolving speed at current time and the difference of measurement revolving speed not all greater than or equal to predetermined deviation
Threshold value then determines that the operating status of the speed probe is normal.
In a kind of possible embodiment of first aspect, further includes: if it is determined that only having one in multiple speed probes
The operating status of a speed probe is exception, and the operating status of other speed probes is all normal, then shields abnormal turn
The measurement data of fast sensor, and run using the measurement data of other speed probes control wind power generating set；And/or
If in the second predetermined amount of time, abnormal speed probe current time prediction revolving speed and measure revolving speed difference all less than
Predetermined deviation threshold value then determines that the operating status of abnormal speed probe reverts to normally, and restores abnormal speed probe
The control that measurement data runs wind power generating set.
Second aspect, the embodiment of the present invention provide a kind of fault detection dress for wind power generating set speed probe
It sets, comprising:
It measures revolving speed and obtains module, the measurement revolving speed of multiple speed probes for obtaining wind power generating set；
Predict that revolving speed obtains module, for the measurement revolving speed according to speed probe at the preceding N-1 moment at current time,
Speed probe is obtained in the prediction revolving speed at current time, N is the integer more than or equal to 1；
Speed probe state determination module, for being turned according to speed probe in the prediction revolving speed at current time and measurement
The difference of speed, determines the operating status of speed probe.
In a kind of possible embodiment of second aspect, prediction revolving speed obtains module and is specifically used for, when N is more than or equal to
When 1, successively calculates and turn in prediction revolving speed and measurement revolving speed from the forward n-th moment at current time according to speed probe
Fast sensor is being worked as in the prediction revolving speed from forward the N-1 moment at current time until speed probe is calculated certainly
The prediction revolving speed at forward 1st moment at preceding moment；According to speed probe pre- from forward 1st moment at current time
Revolving speed and measurement revolving speed are surveyed, obtains speed probe in the prediction revolving speed at current time；When N is equal to 0, speed probe is existed
The measurement revolving speed at current time, as speed probe current time prediction revolving speed.
In a kind of possible embodiment of second aspect, speed probe state determination module, if being specifically used for turning
Fast sensor is more than or equal to predetermined deviation threshold value in the prediction revolving speed at current time and the difference of measurement revolving speed, then determines the revolving speed
The operating status of sensor is abnormal；If speed probe is less than pre- in the prediction revolving speed at current time and the difference of measurement revolving speed
If deviation threshold, then determine that the operating status of speed probe is normal；Alternatively, if in the first predetermined amount of time, revolution speed sensing
Device all greater than predetermined deviation threshold value is equal to, then determines revolution speed sensing in the prediction revolving speed at current time and the difference of measurement revolving speed
The operating status of device is abnormal；If in the first predetermined amount of time, speed probe turns in the prediction revolving speed at current time and measurement
The difference of speed all greater than or equal to predetermined deviation threshold value, does not then determine that the operating status of the speed probe is normal.
It further include fan operation control module in a kind of possible embodiment of second aspect, if pre- for second
It fixes time in section, abnormal speed probe is in the prediction revolving speed at current time and the difference of measurement revolving speed all less than predetermined deviation
Threshold value then determines that the operating status of abnormal speed probe reverts to normally, and restores the measurement data of abnormal speed probe
Control to wind power generating set operation；And/or if abnormal speed probe is at current time in the second predetermined amount of time
Predict that revolving speed and the difference for measuring revolving speed all less than predetermined deviation threshold value, then determine that the operating status of abnormal speed probe is extensive
Multiple is normal, and the control that the measurement data for restoring abnormal speed probe runs wind power generating set.
Fault detection in a kind of possible embodiment of second aspect, for wind power generating set speed probe
Device is arranged in the master controller of wind power generating set.
The third aspect, the embodiment of the present invention provide a kind of computer readable storage medium, are stored thereon with program, program quilt
The fault detection method for being used for wind power generating set speed probe as described above is realized when processor executes.
In embodiments of the present invention, it is contemplated that revolving speed will not mutate when wind power generating set is normal, therefore, combine
The measurement revolving speed and the measurement revolving speed at the top n moment at current time (history i.e. in a period of time measures revolving speed) at current time
The malfunction of speed probe is determined.
The problems such as with failure or unstable performance is likely to occur because of some speed probe in the prior art, influence wind-force
The correctness of generator set control revolving speed is compared, since the history measurement revolving speed in a period of time has continuity and the data scale of construction
Big feature can offset the influence of a small amount of measurement data exception or data jump, abnormal speed probe is recognized accurately,
To exclude influence of the measurement data of abnormal speed probe to wind-driven generator unit allocation revolving speed, reduce because of revolving speed failure
Erroneous judgement and caused by revolving speed disorderly closedown frequency, reduce wind power generating set generated energy loss.
Detailed description of the invention
The present invention may be better understood from the description with reference to the accompanying drawing to a specific embodiment of the invention,
In, the same or similar appended drawing reference indicates the same or similar feature.
Fig. 1 is the fault detection method provided by one embodiment of the present invention for wind power generating set speed probe
Flow diagram；
Fig. 2 be another embodiment of the present invention provides fault detection method for wind power generating set speed probe
Flow diagram；
Fig. 3 is the fault detection means provided by one embodiment of the present invention for wind power generating set speed probe
Structural schematic diagram；
Fig. 4 be another embodiment of the present invention provides fault detection means for wind power generating set speed probe
Structural schematic diagram.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.
The embodiment of the invention provides a kind of fault detection method for wind power generating set speed probe and device,
Storage medium.Using the technical solution in the embodiment of the present invention, abnormal speed probe can be recognized accurately, to exclude different
Influence of the measurement data of normal speed probe to wind-driven generator unit allocation revolving speed, reduces and causes because of the erroneous judgement of revolving speed failure
Revolving speed disorderly closedown frequency, reduce wind power generating set generated energy loss.
Fig. 1 is the fault detection method provided by one embodiment of the present invention for wind power generating set speed probe
Flow diagram.As shown in Figure 1, the method comprising the steps of 101 to step 103.
In a step 101, the measurement revolving speed of multiple speed probes of wind power generating set is obtained.
In a step 102, the measurement revolving speed according to speed probe at the top n moment at current time obtains revolving speed biography
Prediction revolving speed of the sensor at current time, N are the integer more than or equal to 0.
In step 103, determine to turn in the prediction revolving speed at current time and the difference of measurement revolving speed according to speed probe
The operating status of fast sensor.
In one example, if speed probe is more than or equal in the prediction revolving speed at current time and the difference of measurement revolving speed
Predetermined deviation threshold value then can be determined that the operating status of the speed probe is abnormal；And if speed probe is when current
The prediction revolving speed at quarter and the difference for measuring revolving speed are less than predetermined deviation threshold value, then can be determined that the operating status of speed probe is
Normally.
In another example, to further decrease influence of the instantaneous abnormal data to result is determined, if the first pre- timing
Between in section, speed probe current time prediction revolving speed and measure the difference of revolving speed all greater than being equal to predetermined deviation threshold
Value is determining that the operating status of speed probe is exception；And if speed probe is when current in the first predetermined amount of time
The prediction revolving speed at quarter and the difference for measuring revolving speed then can be determined that the revolving speed passes not all greater than or equal to predetermined deviation threshold value
The operating status of sensor is normal.
In embodiments of the present invention, it is contemplated that revolving speed will not mutate when wind power generating set is normal, therefore, combine
The measurement revolving speed and the measurement revolving speed at the top n moment at current time (history i.e. in a period of time measures revolving speed) at current time
The malfunction of speed probe is determined.
The problems such as with failure or unstable performance is likely to occur because of some speed probe in the prior art, influence wind-force
The correctness of generator set control revolving speed is compared, since the history measurement revolving speed in a period of time has continuity and the data scale of construction
Big feature can offset the influence of a small amount of measurement data exception or data jump, abnormal speed probe is recognized accurately,
To exclude influence of the measurement data of abnormal speed probe to wind-driven generator unit allocation revolving speed, reduce because of revolving speed failure
Erroneous judgement and caused by revolving speed disorderly closedown frequency, reduce wind power generating set generated energy loss.
In one example, the calculating of prediction revolving speed can be carried out based on exponent-weighted average method, such as:
When N is more than or equal to 1, successively turned according to speed probe from the prediction at forward n-th moment at current time
Speed and measurement revolving speed calculate speed probe in the prediction revolving speed from forward the N-1 moment at current time, until calculating
To speed probe in the prediction revolving speed from forward 1st moment at current time；Then according to speed probe from currently
The prediction revolving speed and measurement revolving speed at forward 1st moment at moment, obtain speed probe in the prediction revolving speed at current time；
When N is equal to 0, measurement revolving speed by speed probe at current time, as speed probe at current time
Prediction revolving speed.
Specifically, the prediction revolving speed of t momentIt can indicate are as follows:
Wherein, β is the first weighted factor, and 1- β is the second weighted factor,For the prediction revolving speed at t-1 moment,For the measurement revolving speed at t-1 moment, t-1 indicates first moment forward in t moment.
Citing technical solution in the embodiment of the present invention carries out illustrated in greater detail below.
Multiple speed probes measurement rotary speed data that wind power generating set acquires in real time is shown in table 1, specially
The t of GenSpeed1, GenSpeed2 and GenSpeed31-t20The measurement rotary speed data at moment.
Table 1
| Serial number | GenSpeed1 | GenSpeed2 | GenSpeed3 |
| t1 | 0.41661 | 0.41596 | 0.41727 |
| t2 | 0.41596 | 0.42443 | 0.42638 |
| t3 | 0.43224 | 0.43224 | 0.43224 |
| t4 | 0.43224 | 0.43224 | 0.43224 |
| t5 | 0.43224 | 0.43224 | 0.43159 |
| t6 | 0.43224 | 0.43094 | 0.43224 |
| t7 | 0.43224 | 0.43094 | 0.43159 |
| t8 | 0.43094 | 0.43224 | 0.43224 |
| t9 | 0.43094 | 0.43224 | 0.43224 |
| t10 | 0.43224 | 0.43094 | 0.43289 |
| t11 | 0.43094 | 0.43224 | 0.43224 |
| t12 | 0.43224 | 0.43224 | 0.43224 |
| t13 | 0.43224 | 0.43094 | 0.43289 |
| t14 | 0.43028 | 0.43094 | 0.43159 |
| t15 | 0.43224 | 0.43224 | 0.43289 |
| t16 | 0.43224 | 0.43224 | 0.43289 |
| t17 | 0.43224 | 0.43094 | 0.43159 |
| t18 | 0.43094 | 0.43224 | 0.43224 |
| t19 | 0.43224 | 0.43744 | 0.43744 |
| t20 | 0.44395 | 0.44461 | 0.44461 |
If β=0.1, then according to formula (1) and table (1), prediction revolving speed of the available GenSpeed1 in different moments,
T is illustratively provided below1-t4The calculating process of moment prediction revolving speed:
GenSpeed1 is shown in table 2 respectively in t1-t20The prediction revolving speed and measurement revolving speed at moment, and between the two
Deviation ε.
Table 2
With t14The deviation ε at moment14For, ε14When less than predetermined deviation threshold value 0.05, illustrate speed probe
The operating status of GenSpeed1 is normal, conversely, illustrating that the operating status of speed probe GenSpeed1 is abnormal.
Fig. 2 is that another embodiment of the present invention provides the streams of the fault detection method for wind power generating set speed probe
Journey schematic diagram, Fig. 2 the difference from Fig. 1 is that, after the step 103 in Fig. 1, include the steps that in Fig. 2 104 and step
Rapid 105.
At step 104, if it is determined that the operating status for only having a speed probe in multiple speed probes is exception,
The operating status of other speed probes is all normal, then shields the measurement data of abnormal speed probe, and utilize other
The measurement data control wind power generating set operation of speed probe.
Compared with single revolving speed error protection strategy in the prior art, since the embodiment of the present invention can be in a certain revolving speed
Under sensor abnormality and the normal situation of other sensors, the measurement data of abnormal speed probe is shielded, and utilizes other turns
The measurement data control wind power generating set operation of fast sensor, so as to realize the fault-tolerant fortune to multiple speed probes
Row reduces revolving speed disorderly closedown frequency, reduces generated energy loss.
In step 105, if in predetermined amount of time, abnormal speed probe turns in the prediction revolving speed at current time and measurement
The difference of speed then determines that the operating status of abnormal speed probe reverts to normally all less than predetermined deviation threshold value, and restores
The control that the measurement data of abnormal speed probe runs wind power generating set.
That is, it can temporarily be shielded from control revolving speed, be used when detecting a certain speed probe exception
The measurement data of remaining measurement sensor continues to run；And when the measurement revolving speed of abnormality sensor and predict the difference of revolving speed pre-
If deviation threshold and continue for a period of time, it can assert that the speed probe restores normal, it can be cut into again to control
In system, to realize that revolving speed failure is passed through automatically.
Fig. 3 is the fault detection means provided by one embodiment of the present invention for wind power generating set speed probe
Structural schematic diagram.As shown in figure 3, the fault detection means includes: that measurement revolving speed obtains module 301, prediction revolving speed obtains module
302 and speed probe state determination module 303.
Measurement revolving speed obtains the measurement revolving speed that module 301 is used to obtain multiple speed probes of wind power generating set.
Predict that revolving speed acquisition module 302 is used for the measurement revolving speed according to speed probe at the top n moment at current time,
Speed probe is obtained in the prediction revolving speed at current time, N is the integer more than or equal to 0.
Specifically, prediction revolving speed obtains module 302 and is used to successively worked as certainly according to speed probe when N is more than or equal to 1
The prediction revolving speed at preceding forward n-th moment at moment and measurement revolving speed calculate speed probe from current time forward the
The prediction revolving speed at N-1 moment turns until speed probe is calculated from the prediction at forward 1st moment at current time
Speed；According to speed probe in prediction revolving speed and measurement revolving speed from forward 1st moment at current time, revolution speed sensing is obtained
Prediction revolving speed of the device at current time；When N is equal to 0, measurement revolving speed by speed probe at current time is passed as revolving speed
Prediction revolving speed of the sensor at current time.
Speed probe state determination module 303 is used for according to speed probe in the prediction revolving speed at current time and measurement
Revolving speed determines the operating status of speed probe.
Specifically, if speed probe state determination module 303 is more than or equal to predetermined deviation threshold value for difference, determine
The operating status of the speed probe is abnormal；If difference is less than predetermined deviation threshold value, the operation shape of speed probe is determined
State is normal；Alternatively, if difference then determines revolution speed sensing all greater than predetermined deviation threshold value is equal in the first predetermined amount of time
The operating status of device is abnormal；If in the first predetermined amount of time, difference all greater than or equal to predetermined deviation threshold value, is not then sentenced
The operating status of the fixed speed probe is normal.
Fig. 4 be another embodiment of the present invention provides fault detection means for wind power generating set speed probe
Structural schematic diagram, Fig. 4 the difference from Fig. 3 is that, the speed probe fault detection means in Fig. 4 further includes fan operation
Control module 304.
Wherein, if fan operation control module 304 is in the second predetermined amount of time, abnormal speed probe to be when current
The prediction revolving speed at quarter and the difference for measuring revolving speed then determine the operation shape of abnormal speed probe all less than predetermined deviation threshold value
State reverts to normally, and the control that the measurement data for restoring abnormal speed probe runs wind power generating set；And/or if
In second predetermined amount of time, abnormal speed probe is in the prediction revolving speed at current time and the difference of measurement revolving speed all less than pre-
If deviation threshold, then determine that the operating status of abnormal speed probe reverts to normally, and restore the survey of abnormal speed probe
The control that amount data run wind power generating set.
It should be noted that being responsible for complete machine shape since fan master control system in practice is wind power generating set " brain "
The switching of state, the coordinated control and safeguard protection of logic judgment, complete machine, therefore, speed probe in the embodiment of the present invention therefore
Barrier detection device can be set in the master controller of wind power generating set, to avoid the transformation to existing hardware equipment, save
About manufacturing cost.Certainly, the speed probe fault detection means in the embodiment of the present invention is also possible to operation independent function
The logical device of energy, herein without limiting.
In addition, being stored thereon with program, program quilt the embodiment of the invention also provides a kind of computer readable storage medium
The fault detection method for being used for wind power generating set speed probe as described above is realized when processor executes.
It should be clear that all the embodiments in this specification are described in a progressive manner, each embodiment it
Between the same or similar part may refer to each other, the highlights of each of the examples are it is different from other embodiments it
Place.For device embodiment, related place may refer to the declaratives of embodiment of the method.Not office of the embodiment of the present invention
It is limited to particular step and structure described above and shown in figure.Those skilled in the art can understand the present invention in fact
It after the spirit for applying example, is variously modified, modification and addition, or the sequence between changing the step.Also, it is risen in order to concise
See, omits the detailed description to known method technology here.
Functional block shown in structures described above block diagram can be implemented as hardware, software, firmware or their group
It closes.When realizing in hardware, it may, for example, be electronic circuit, specific integrated circuit (ASIC), firmware appropriate, insert
Part, function card etc..When being realized with software mode, the element of the embodiment of the present invention is used to execute the program of required task
Or code segment.Perhaps code segment can store in machine readable media program or the data by carrying in carrier wave are believed
It number is sent in transmission medium or communication links." machine readable media " may include be capable of storage or transmission information any
Medium.The example of machine readable media includes electronic circuit, semiconductor memory devices, ROM, flash memory, erasable ROM
(EROM), floppy disk, CD-ROM, CD, hard disk, fiber medium, radio frequency (RF) link, etc..Code segment can via such as because
The computer network of special net, Intranet etc. is downloaded.
The embodiment of the present invention can be realized in other specific forms, without departing from its spirit and essential characteristics.For example, special
Determining algorithm described in embodiment can be modified, and system architecture is without departing from the substantially smart of the embodiment of the present invention
Mind.Therefore, current embodiment is all counted as being exemplary rather than limited, the model of the embodiment of the present invention in all respects
It encloses by appended claims rather than foregoing description defines, also, falls into the meaning of claim and complete in the range of equivalent
Portion changes all to be included among the range of the embodiment of the present invention.
Claims (11)
1. a kind of fault detection method of the speed probe for wind power generating set, wherein include:
Obtain the measurement revolving speed of multiple speed probes of the wind power generating set；
Measurement revolving speed according to the speed probe at the top n moment at current time obtains the speed probe in institute
The prediction revolving speed at current time is stated, N is the integer more than or equal to 0；
According to the speed probe in the prediction revolving speed at the current time and the difference of measurement revolving speed, determine that the revolving speed passes
The operating status of sensor.
2. according to the method described in claim 1, wherein, it is described according to the speed probe in the top n at current time
The measurement revolving speed at quarter obtains the speed probe in the prediction revolving speed at the current time, comprising:
When N is more than or equal to 1, successively according to the speed probe pre- from the forward n-th moment at the current time
Revolving speed and measurement revolving speed are surveyed, the speed probe is calculated and turns from the prediction at forward the N-1 moment at the current time
Speed, until the speed probe is calculated in the prediction revolving speed from forward 1st moment at the current time；
According to the speed probe in prediction revolving speed and measurement revolving speed from forward 1st moment at the current time, obtain
To the speed probe the current time prediction revolving speed；
When N is equal to 0, by the speed probe in the measurement revolving speed at the current time, exist as the speed probe
The prediction revolving speed at the current time.
3. according to the method described in claim 2, wherein, it is described according to the speed probe from the current time forward
The n-th moment prediction revolving speed and measurement revolving speed, calculate the speed probe from the current time forward N-1
The prediction revolving speed at a moment, comprising:
The speed probe is calculated in the prediction revolving speed and the first weighted factor from the forward n-th moment at the current time
The first product；
The speed probe is calculated in the prediction revolving speed and the second weighted factor from the forward n-th moment at the current time
The second product；
By the sum of second product of the first sum of products, as the speed probe from the current time forward N-
The prediction revolving speed at 1 moment；
Wherein, first weighted factor is respectively greater than 0 and is added with second weighted factor is equal to 1.
4. according to the method described in claim 1, wherein, it is described according to the speed probe the current time prediction
Revolving speed and measurement revolving speed, determine the operating status of the speed probe, comprising:
If the speed probe is more than or equal to predetermined deviation in the prediction revolving speed at the current time and the difference of measurement revolving speed
Threshold value then determines the operating status of the speed probe for exception；If the speed probe is in the prediction at the current time
The difference of revolving speed and measurement revolving speed is less than the predetermined deviation threshold value, then determines that the operating status of the speed probe is positive
Often；Alternatively,
If in the first predetermined amount of time, the speed probe is in the prediction revolving speed at the current time and the difference of measurement revolving speed
All greater than the predetermined deviation threshold value is equal to, then determine the operating status of the speed probe for exception；If described first
In predetermined amount of time, the speed probe the current time prediction revolving speed and measure revolving speed difference not all greater than
Or be equal to the predetermined deviation threshold value, then determine that the operating status of the speed probe is normal.
5. according to the method described in claim 4, wherein, further includes:
If it is determined that the operating status for only having a speed probe in the multiple speed probe is abnormal, other revolution speed sensings
The operating status of device is all normal, then shields the measurement data of abnormal speed probe, and utilize other revolution speed sensings
The measurement data of device controls the wind power generating set operation；And/or
If in the second predetermined amount of time, prediction revolving speed and measurement revolving speed of the exception speed probe at the current time
Difference then determines that the operating status of the abnormal speed probe reverts to normally all less than the predetermined deviation threshold value, and
Restore the control that the measurement data of the abnormal speed probe runs the wind power generating set.
6. a kind of fault detection means for wind power generating set speed probe, wherein include:
It measures revolving speed and obtains module, the measurement revolving speed of multiple speed probes for obtaining the wind power generating set；
Predict that revolving speed obtains module, for the measurement revolving speed according to the speed probe at the preceding N-1 moment at current time,
The speed probe is obtained in the prediction revolving speed at the current time, N is the integer more than or equal to 1；
Speed probe state determination module, for according to the speed probe in the prediction revolving speed at the current time and survey
The difference for measuring revolving speed, determines the operating status of the speed probe.
7. device according to claim 6, wherein the prediction revolving speed obtains module and is specifically used for,
When N is more than or equal to 1, successively according to the speed probe pre- from the forward n-th moment at the current time
Revolving speed and measurement revolving speed are surveyed, the speed probe is calculated and turns from the prediction at forward the N-1 moment at the current time
Speed, until the speed probe is calculated in the prediction revolving speed from forward 1st moment at the current time；According to institute
Speed probe is stated in prediction revolving speed and measurement revolving speed from forward 1st moment at the current time, obtains the revolving speed
Prediction revolving speed of the sensor at the current time；
When N is equal to 0, by the speed probe in the measurement revolving speed at the current time, exist as the speed probe
The prediction revolving speed at the current time.
8. device according to claim 6, wherein
The speed probe state determination module, if the prediction specifically for the speed probe at the current time turns
Speed and the difference of measurement revolving speed are more than or equal to predetermined deviation threshold value, then determine the operating status of the speed probe for exception；If
The speed probe is less than the predetermined deviation threshold value in the prediction revolving speed at the current time and the difference of measurement revolving speed, then
Determine that the operating status of the speed probe is normal；Alternatively, if the speed probe is in institute in the first predetermined amount of time
The prediction revolving speed at current time and the difference for measuring revolving speed are stated all greater than the predetermined deviation threshold value is equal to, then determines described turn
The operating status of fast sensor is abnormal；If the speed probe is at the current time in first predetermined amount of time
Prediction revolving speed and measure revolving speed difference not all greater than or be equal to the predetermined deviation threshold value, then determine the revolution speed sensing
The operating status of device is normal.
9. device according to claim 8, wherein further include fan operation control module, if being used for for the second predetermined time
In section, abnormal speed probe is default inclined all less than described in the prediction revolving speed at the current time and the difference of measurement revolving speed
Poor threshold value then determines that the operating status of the abnormal speed probe reverts to normally, and restores the abnormal speed probe
Measurement data control that the wind power generating set is run；And/or if in the second predetermined amount of time, the exception revolving speed
Sensor all less than the predetermined deviation threshold value, then determines in the prediction revolving speed at the current time and the difference of measurement revolving speed
The operating status of the exception speed probe reverts to normally, and restores the measurement data of the abnormal speed probe to institute
State the control of wind power generating set operation.
10. according to the described in any item devices of claim 6-9, wherein the wind power generating set is arranged in described device
In master controller.
11. a kind of computer readable storage medium, is stored thereon with program, wherein realize when program is executed by processor as weighed
Benefit requires the described in any item fault detection methods for wind power generating set speed probe of 1-5.
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