CN104747367B - Power curves of wind-driven generator sets Characteristics Detection system - Google Patents
Power curves of wind-driven generator sets Characteristics Detection system Download PDFInfo
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- CN104747367B CN104747367B CN201310749534.XA CN201310749534A CN104747367B CN 104747367 B CN104747367 B CN 104747367B CN 201310749534 A CN201310749534 A CN 201310749534A CN 104747367 B CN104747367 B CN 104747367B
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention discloses a kind of power curves of wind-driven generator sets Characteristics Detection system, wherein, the system includes gathering current wind speed, the ambient parameter harvester of cabin external environment temperature；Gather the equipment for monitoring power quality of the active power of wind power generating set；Obtain the data processing unit of the average value of ambient parameter and active power；The average air density acquiring unit of average air density is obtained according to atmospheric pressure average value outside cabin and cabin external environment temperature averages；The standardization wind speed acquiring unit of the standardization wind speed under standard air density is calculated according to standard air density, mean wind speed, average air density；The power curve generation unit of power curves of wind-driven generator sets is generated according to the multigroup standardization wind speed and active power mean value obtained in the specified period.The present invention can automatically generate power curve report and the chart of actual blower fan, reach the purpose of accurate evaluation wind power generating set generating efficiency and power curve characteristic.
Description
Technical field
The present invention relates to wind power generation field, more particularly to a kind of power curves of wind-driven generator sets Characteristics Detection system.
Background technology
At present, detection of the wind power plant to power curves of wind-driven generator sets characteristic mainly establishes anemometer tower using selection unit
Or power curve certification and verification, or the unit number gathered using wind farm monitoring system are carried out to unit with mobile anemometer
According to by blower fan manufacturer establishment power generator group power curve.
In engineering practice, establish anemometer tower and the costly of wind is surveyed in movement, it is impossible to cover the whole blower fans of wind power plant,
Adaptability is poor in the environment of variable direction；Simultaneously because the edge of wind power generating set manufacturer generally existing technology barriers
Therefore, for wind-powered electricity generation operator, fan master control system and the sampling of wind farm monitoring system internal data, the method for data processing
Be similar to black box with computation schema, thus the power curve that is formed in this data basis lack objective just and sound judge according to
According to, can not assess exactly wind power plant run wind power generating set generating efficiency.
The content of the invention
In view of above technical problem, the invention provides a kind of power curves of wind-driven generator sets Characteristics Detection system, is adopted
With independent ambient parameter harvester and equipment for monitoring power quality, automatically generate the power curve report of actual blower fan and scheme
Table, reaches the purpose of accurate evaluation wind power generating set generating efficiency and power curve characteristic.
There is provided a kind of power curves of wind-driven generator sets Characteristics Detection system, including ring according to an aspect of the present invention
Border parameter acquisition devices, equipment for monitoring power quality, data processing unit, average air density acquiring unit, standardization wind speed
Acquiring unit, power curve generation unit, wherein：
Ambient parameter harvester, for gathering ambient parameter with very first time interval t1, wherein ambient parameter includes working as
The outer atmospheric pressure B of preceding wind speed V, cabin external environment temperature T, cabin, wherein the outer atmospheric pressure B of the cabin and the current altitude of collection are high
Angle value h is associated；
Equipment for monitoring power quality, the active power for gathering wind power generating set with the second time interval t2；
Data processing unit, for handling the ambient parameter and active power that collect, to respectively obtain the 3rd
The average value of ambient parameter and active power in time interval t3, wherein the 3rd time interval is more than very first time interval and second
Time interval；
Average air density acquiring unit, for according to atmospheric pressure average value B outside the cabin calculated in the 3rd time intervalt3
With cabin external environment temperature averages Tt3Obtain the average air density p in the 3rd time intervalt3；
Wind speed acquiring unit is standardized, for according to standard air density ρ0, mean wind speed V in the 3rd time intervalt3、
Average air density pt3Calculate the standardization wind speed V under standard air densityn；
Power curve generation unit, for according to the multigroup 3rd time interval internal standard wind transmission obtained in the specified period
Speed and active power mean value, generate power curves of wind-driven generator sets, wherein, the specified period was more than between the 3rd time
Every.
It is preferred that, average air density acquiring unit is according to formulaCalculate in the 3rd time interval
Average air density pt3, wherein, R0It is the gas constant of dry air.
It is preferred that, the ambient parameter also includes cabin external environment relative humidity, wherein：
Average air density acquiring unit is according to formulaCalculate the average sky in the 3rd time interval
Air tightness ρt3, wherein, R1It is humid air gas factor, R1With average cabin external environment temperature and average machine in the 3rd time interval
Extravehicular environment relative humidity is associated.
It is preferred that, standardization wind speed acquiring unit is according to formulaCalculate under standard air density
Standardization wind speed Vn。
It is preferred that, the detecting system also includes abnormal power signal gathering unit and abnormal power filter element, wherein：
Abnormal power signal gathering unit, the abnormal signal for gathering wind power generating set by hard contact point signal line,
Wherein described abnormal signal is that wind power generating set is in the signal shut down or limited and sent during power operating states；
Abnormal power filter element, for deleting during abnormal power signal gathering unit collects abnormal signal, electricity
Can the active power value that receives of quality monitoring device, with the active power value after being filtered, and by the wattful power after filtering
Rate value is sent to data processing unit and handled.
It is preferred that, the ambient parameter harvester passes through formula
Computer is big out of my cabin
Air pressure.
It is preferred that, the power curve generation unit is remote monitoring server or local monitor server.
It is preferred that, the data processing unit is additionally operable to handle the ambient parameter and active power that collect, with
Standard deviation, maximum and the minimum value of ambient parameter and active power in the 3rd time interval t3 are respectively obtained, and is sent to work(
Rate curve generation unit.
It is preferred that, the power curve generation unit, which is additionally operable to store and shown, specifies the multigroup 3rd of acquisition in the period
The average value of ambient parameter and active power, standard deviation, maximum and minimum value in time interval.
It is preferred that, the detecting system also includes the ring exchanger of wind field, wherein：
Power curve generation unit can pass through ring exchanger and data processing unit and standardization wind speed acquiring unit
Connection.
According to an aspect of the present invention there is provided a kind of power curves of wind-driven generator sets characteristic detecting method, including：
Ambient parameter harvester gathers ambient parameter with very first time interval t1, and wherein ambient parameter includes current wind speed
The outer atmospheric pressure B of V, cabin external environment temperature T, cabin, wherein the outer atmospheric pressure B of the cabin and current altitude value h of collection
It is associated；
Equipment for monitoring power quality gathers the active power of wind power generating set with the second time interval t2；
Data processing unit is handled the ambient parameter and active power that collect, to respectively obtain between the 3rd time
Every the average value of ambient parameter in t3 and active power, wherein the 3rd time interval is more than very first time interval and between the second time
Every；
Average air density acquiring unit is according to atmospheric pressure average value B outside the cabin calculated in the 3rd time intervalt3And machine
Extravehicular environment temperature averages Tt3Obtain the average air density p in the 3rd time intervalt3；
Wind speed acquiring unit is standardized according to standard air density ρ0, mean wind speed V in the 3rd time intervalt3, it is average
Atmospheric density ρt3Calculate the standardization wind speed V under standard air densityn；
Power curve generation unit is generated according to the standardization wind speed obtained in the period and active power mean value is specified
Power curves of wind-driven generator sets, wherein, the specified period is more than the 3rd time interval.
It is preferred that, the average air density acquiring unit is flattened according to air outside the cabin calculated in the 3rd time interval
Average Bt3With cabin external environment temperature averages Tt3Obtain the average air density p in the 3rd time intervalt3The step of, including：
Average air density acquiring unit is with specific reference to formulaCalculate flat in the 3rd time interval
Equal atmospheric density ρt3, wherein, R0It is the gas constant of dry air.
It is preferred that, the ambient parameter also includes cabin external environment relative humidity.
It is preferred that, the average air density acquiring unit is flattened according to air outside the cabin calculated in the 3rd time interval
Average Bt3With cabin external environment temperature averages Tt3Obtain the average air density p in the 3rd time intervalt3The step of, including：
Average air density acquiring unit is according to formulaCalculate the average sky in the 3rd time interval
Air tightness ρt3, wherein, R1It is humid air gas factor, R1With average cabin external environment temperature and average machine in the 3rd time interval
Extravehicular environment relative humidity is associated.
It is preferred that, the standardization wind speed acquiring unit is according to standard air density ρ0, being averaged in the 3rd time interval
Wind speed Vt3, average air density pt3Calculate the standardization wind speed V under standard air densitynStep, including：
Wind speed acquiring unit is standardized according to formulaCalculate the standard under standard air density
Wind transmission speed Vn。
It is preferred that, the detection method also includes：
Abnormal power signal gathering unit gathers the abnormal signal of wind power generating set, wherein institute by hard contact point signal line
It is that wind power generating set is in the signal shut down or limited and sent during power operating states to state abnormal signal；
Abnormal power filter element is deleted during abnormal power signal gathering unit collects abnormal signal, the quality of power supply
The active power value that monitoring device is received, with the active power value after being filtered, and the active power value after filtering is sent out
Data processing unit is given to be handled.
Power curves of wind-driven generator sets Characteristics Detection system of the present invention is by using independent ambient parameter harvester
And equipment for monitoring power quality, power curve report and the chart of actual blower fan are automatically generated, accurate evaluation wind-power electricity generation is reached
The purpose of efficiency of generating unit and power curve characteristic.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the schematic diagram of power curves of wind-driven generator sets Characteristics Detection system one embodiment of the present invention.
Fig. 2 is the schematic diagram of power curves of wind-driven generator sets in one embodiment of the invention.
Fig. 3 is the schematic diagram of power curves of wind-driven generator sets in another embodiment of the present invention.
Fig. 4 is the schematic diagram of another embodiment of power curves of wind-driven generator sets Characteristics Detection system of the present invention.
Fig. 5 is the schematic diagram of the another embodiment of power curves of wind-driven generator sets Characteristics Detection system of the present invention.
Fig. 6 is the schematic diagram of power curves of wind-driven generator sets characteristic detecting method one embodiment of the present invention.
Fig. 7 is the schematic diagram of another embodiment of power curves of wind-driven generator sets characteristic detecting method of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any limitation.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Do not limited the scope of the invention up to formula and numerical value.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the schematic diagram of power curves of wind-driven generator sets Characteristics Detection system one embodiment of the present invention.Such as Fig. 1 institutes
Show, the detecting system includes ambient parameter harvester 101, equipment for monitoring power quality 102, data processing unit 103, flat
Equal atmospheric density acquiring unit 104, standardization wind speed acquiring unit 105, power curve generation unit 106, wherein：
Ambient parameter harvester 101, for gathering ambient parameter with very first time interval t1, wherein ambient parameter includes
Current wind speed V, cabin external environment temperature T；
Equipment for monitoring power quality 102, the active power for gathering wind power generating set with the second time interval t2；
Data processing unit 103, for handling the ambient parameter and active power that collect, to respectively obtain
The average value of ambient parameter and active power in three time interval t3, wherein the 3rd time interval is more than very first time interval and the
Two time intervals；
Average air density acquiring unit 104, for according to atmospheric pressure average value B outside cabin in the 3rd time intervalt3With
Cabin external environment temperature averages Tt3Obtain the average air density p in the 3rd time intervalt3；
Wind speed acquiring unit 105 is standardized, for according to standard air density ρ0, mean wind speed in the 3rd time interval
Vt3, average air density pt3Calculate the standardization wind speed V under standard air densityn；
Power curve generation unit 106, for according to the multigroup 3rd time interval internal standard obtained in the specified period
Wind transmission speed and active power mean value, generate power curves of wind-driven generator sets（As shown in Figure 2）, wherein, the specified time
Section is more than the 3rd time interval.
The power curves of wind-driven generator sets Characteristics Detection system provided based on the above embodiment of the present invention, by using only
Vertical ambient parameter harvester and equipment for monitoring power quality, can automatically generate the power curve report of actual blower fan and scheme
Table, to reach the purpose of accurate evaluation wind power generating set generating efficiency and power curve characteristic.
It is preferred that, ambient parameter harvester 101 can include anemometer, thermometer, wherein, anemometer is used for first
Time interval gathers current wind speed and direction, and current wind speed and direction is sent into data processing unit 103；Thermometer is with
One time interval harvester extravehicular environment temperature, and cabin external environment temperature is sent to data processing unit 103.
It is preferred that, the ambient parameter harvester 101 can also be used to gathering current height above sea level angle value h, and according to working as
Preceding height above sea level angle value computer atmospheric pressure B out of my cabin, to replace pressure sensor, reaches cost-effective purpose.
It is preferred that, the ambient parameter harvester 101 can also include height above sea level measuring instrument and atmospheric pressure is obtained
Module, to replace pressure sensor, reaches cost-effective purpose, wherein：
Height above sea level measuring instrument, the height above sea level angle value h current for gathering；
Atmospheric pressure acquisition module, for according to current height above sea level angle value computer atmospheric pressure B out of my cabin.
It is preferred that, the ambient parameter harvester 101 can pass through formula
Computer is big out of my cabin
Air pressure.
It is preferred that, height above sea level h can also be by live actual measurement, by user in ambient parameter harvester 101
It is upper to set.
It is preferred that, the sampling rate of the ambient parameter such as outer temperature of wind speed, wind direction, cabin can be that 1Hz, i.e. ambient parameter are adopted
The very first time interval of the gathered data of acquisition means 101 can be 1s.
It is preferred that, the sampling rate of wind-driven generator active power can be 3Hz, i.e. equipment for monitoring power quality 102 is adopted
The second time interval for collecting data can be 1/3s.
It is preferred that, data processing unit 103 can also be used to handle the ambient parameter and active power that collect, with
Respectively obtain standard deviation, maximum and the minimum value of ambient parameter and active power in the 3rd time interval t3.
It is preferred that, the 3rd time interval t3 can be 1 second, 30 seconds, 1 minute, 3 minutes or 10 minutes.
It is preferred that, after the processing data of data processing unit 103, it can obtain 1 second, 30 seconds, 1 minute, 3 minutes, 10 minutes
Average value, standard deviation, maximum and minimum value；Eventually form 1 second data logging, 30 second data daily records, 1 minute data day
Will, 3 minute data daily records, 10 minute data daily records, and be sent to and be uploaded to power curve generation unit 106.
It is preferred that, average air density acquiring unit 104 is according to formulaCalculate the 3rd time interval
Interior average air density pt3, wherein, R0It is the gas constant of dry air.
It is preferred that, the ambient parameter can also include cabin external environment relative humidity, and ambient parameter harvester 101 is also
Hygrometer can be included, wherein：
Hygrometer, for very first time interval harvester extravehicular environment relative humidity, and cabin external environment is relatively wet
Degree is sent to data processing unit 103；
Average air density acquiring unit 104 can be according to formulaCalculate flat in the 3rd time interval
Equal atmospheric density ρt3, wherein, R1It is humid air gas factor, R1With average cabin external environment temperature peace in the 3rd time interval
Equal cabin external environment relative humidity is associated.
It is preferred that, standardization wind speed acquiring unit 105 can be according to formulaCalculate standard null
Standardization wind speed V under air tightnessn。
It is preferred that, the power curve generation unit 106 can be remote monitoring server or local monitor server.
It is preferred that, standardization wind speed acquiring unit 105 and data processing unit 103 can be by the ring exchangers of wind field
With remote monitoring server or local monitor server communication, to remote monitoring system server or local monitoring system server
Upload data.
It is preferred that, height above sea level h can also be by live actual measurement, by user by remote monitoring server or originally
Ground monitoring server is set on ambient parameter harvester 101.
It is preferred that, the power curve generation unit 106, which can also be used to store and show, specifies many of period interior acquisition
Average value, standard deviation, maximum and the minimum value of ambient parameter and active power in the 3rd time interval of group；And display generation
Power curves of wind-driven generator sets.
It is preferred that, the power curve generation unit 106 can be put down according in the 3rd time interval stored in database
Equal data logging（The data pair of wind speed and active power）, according to Bean's method（Bins）, the interval of wind speed is set to 0.5m/s, pressed
The ownership partition at wind speed interval, it is interval which falls on, and which interval accumulated value adds 1, and interval wind speed is represented by mean wind speed value,
Wind speed and the statistical table of active power are obtained, all data points are drawn out automatically（Wind speed, active power）Scatter diagram, scatterplot
Figure generates measured power curve after normalized.
It is preferred that, power curves of wind-driven generator sets can include scatter diagram, line chart（As shown in Figure 2）Scheme with wind frequency.
It is preferred that, according to the actual motion demand of wind field, user can customize the timing statisticses section of power curve（Specify
Period）.
It is preferred that, power curve generation unit 106 can show two different time sections in same power
Power curve（As shown in Figure 3）, and two power curve can be compared, wind power generating set technology changes for comparison
Enter brought power ascension effect.
It is preferred that, anemometer can be wind sensor, and wind sensor is installed on bucket rear, specifically be arranged on cabin afterbody
The center of cantilever tip, is easily caused the error of measurement data by wake effect.
It is preferred that, data processing unit 103 is additionally operable to wind speed being divided into low speed, at a high speed middling speed, three intervals, according to institute
State the empirical value of wind sensor and laser radar anemometer comparing, and the power conversion that blower fan is consumed be air speed value with
Measured value is added, and is obtained by compensation data algorithm in front of blade close to real wind speed.
It is preferred that, the work(of the data formation data logging using initial data or Jing Guo compensation deals may be selected in the present invention
Energy.
It is preferred that, the detecting system can also include the ring exchanger of wind field, wherein：
Power curve generation unit can pass through ring exchanger and data processing unit and standardization wind speed acquiring unit
Connection.
Fig. 4 is the schematic diagram of another embodiment of power curves of wind-driven generator sets Characteristics Detection system of the present invention.With Fig. 1 institutes
Show that embodiment is compared, in the embodiment shown in fig. 4, it is preferred that the detecting system also includes abnormal power signal gathering unit
401 and abnormal power filter element 402, wherein：
Abnormal power signal gathering unit 401, believes for gathering the abnormal of wind power generating set by hard contact point signal line
Number, wherein the abnormal signal, which is wind power generating set, is in the signal shut down or limited and sent during power operating states；
Abnormal power filter element 402, for deleting during abnormal power signal gathering unit collects abnormal signal,
The active power value that equipment for monitoring power quality is received, with the active power value after being filtered, and will be active after filtering
Performance number is sent to data processing unit and handled.
It is preferred that, the function using the optimization data formation data logging after filtering also may be selected in the present invention.
The above embodiment of the present invention, wind power generating set is obtained by using hard contact point signal line and is in shutdown or limits
Power operating states, it is ensured that fan master control system can by this hard contact point signal by fan parking or limit power running status
Feed back to detecting system.Wherein, the hardwire（That is 0.75mm cable）At the controller of wind power generating set, connect firmly
Line passes through low and high level signal（0V or 24V）Shutdown or limit power operation state, wherein 0V are in obtain wind power generating set
（Low level）Represent normal operating condition；24V（High level）Represent to shut down or limit power operation state.
When blower fan disorderly closedown, one DO contacts action of blower fan master controller, by 24V（High level）Signal is sent to
Detecting system DI input ports（That is abnormal power signal gathering unit 401）；When there is limit Power operation in blower fan, blower fan main control
One DO contacts action of device, also by 24V（High level）Signal be sent to detecting system DI input ports（That is abnormal power signal is adopted
Collect unit 401）.Abnormal power signal gathering unit 401 receives unit 24V（High level）After signal, data processing unit 103 will
The performance number in the period is not recorded, therefore can ensure the precision of detecting system with Exception Filter performance number.
Said system is illustrated below by specific example：
In the specific embodiment shown in Fig. 5, using customization PLC（Programmable Logic Controller, can
Programmed logic controller）To realize data processing unit 103 in Fig. 4 embodiments, average air density acquiring unit 104, standard
The function of wind transmission speed acquiring unit 105, abnormal power signal gathering unit 401 and abnormal power filter element 402, here no longer
Narration in detail.PLC model DEIF controller AWC500 are wherein customized, are the controller for being exclusively used in wind energy field, DEIF controls
The 26S Proteasome Structure and Functions of device AWC500 processed in itself are that well known to a person skilled in the art be not detailed herein.
In the specific embodiment shown in Fig. 5, Power Quality Detection module model MTR-3 is exclusively used in voltage x current inspection
Survey, by directly detecting three-phase voltage and from CT（Current transformer, current transformer）Three-phase current letter
Number, the power measurement of 0.5 grade of precision can be provided, the wherein 26S Proteasome Structure and Functions of Power Quality Detection module MTR-3 in itself are these
Known to art personnel, it is not detailed herein.
In the specific embodiment shown in Fig. 5, ambient parameter harvester includes temperature humidity as shown in Figure 5 and sensed
Device, anemoclinograph and height above sea level measuring instrument（Not shown in Fig. 5）.
Customization PLC communication module is connected by connection with ultrasonic aerovane and Power Quality Detection module to be adopted
Collect the information such as wind speed and active power, communication modes are RS485；The signal acquisition module for customizing PLC connects temperature by signal wire
Degree, humidity sensor harvester extravehicular environment temperature, humidity；Customization PLC has reserved two-way digital-quantity input interface, can access wind
The hard contact point signal of power generator group master control system.
Then, customization PLC carries out the wind speed collected, cabin external environment temperature and power quality data by software
Wind speed is standardized and compensation deals, is formed 10 minutes or user customizes the wind speed of time interval and the data of power of the assembling unit average value
It is right, it is stored in customization PLC.
Finally, these data are uploaded to remote monitoring system server or local monitor by the ring exchanger of wind field
In the database of system server（Configure historical data base）, by remote monitoring system server or local monitoring system server
With reference to user from information such as the height above sea levels set, power curve report and the chart of actual blower fan are automatically generated, it is accurate to reach
Assess the purpose of wind power generating set generating efficiency and power curve characteristic.
Customization PLC, Power Quality Detection module, 24V power supplies, low-voltage variation component needed for the present embodiment etc. are
It may be mounted in switch board, cabinet material is stainless steel 304, bottom of cabinet bulk is equipped with the universal wheel of four strap brakes, and cabinet top is matched somebody with somebody
Standby handrail, cabinet is designed using industrial standardization, has taken into full account dust-proof, moisture proof, anti-electromagnetic interference, degree of protection reaches
IP54。
Fig. 6 is the schematic diagram of power curves of wind-driven generator sets characteristic detecting method one embodiment of the present invention.It is preferred that,
The present embodiment can be performed by power curves of wind-driven generator sets Characteristics Detection system.This method comprises the following steps：
Step 601, ambient parameter harvester gathers ambient parameter with very first time interval t1, and wherein ambient parameter includes
Current wind speed V, cabin external environment temperature T, the outer atmospheric pressure B of cabin, wherein the outer atmospheric pressure B of the cabin and the current altitude of collection
Height value h is associated；
Step 602, equipment for monitoring power quality gathers the active power of wind power generating set with the second time interval t2；
Step 603, data processing unit is handled the ambient parameter and active power that collect, to respectively obtain
The average value of ambient parameter and active power in three time interval t3, wherein the 3rd time interval is more than very first time interval and the
Two time intervals；
Step 604, average air density acquiring unit is average according to atmospheric pressure outside the cabin calculated in the 3rd time interval
Value Bt3With cabin external environment temperature averages Tt3Obtain the average air density p in the 3rd time intervalt3；
Step 605, standardization wind speed acquiring unit is according to standard air density ρ0, mean wind speed in the 3rd time interval
Vt3, average air density pt3Calculate the standardization wind speed V under standard air densityn；
Step 606, power curve generation unit is flat according to the standardization wind speed and active power obtained in the specified period
Average, generates power curves of wind-driven generator sets, wherein, the specified period is more than the 3rd time interval.
It is preferred that, step 604 can include：
Average air density acquiring unit is with specific reference to formulaCalculate flat in the 3rd time interval
Equal atmospheric density ρt3, wherein, R0It is the gas constant of dry air.
It is preferred that, the ambient parameter also includes cabin external environment relative humidity.
It is preferred that, step 604 can include：
Average air density acquiring unit is according to formulaCalculate the average sky in the 3rd time interval
Air tightness ρt3, wherein, R1It is humid air gas factor, R1With average cabin external environment temperature and average machine in the 3rd time interval
Extravehicular environment relative humidity is associated.
It is preferred that, step 605 can include：
Wind speed acquiring unit is standardized according to formulaCalculate the standard under standard air density
Wind transmission speed Vn。
The power curves of wind-driven generator sets characteristic detecting method provided based on the above embodiment of the present invention, by using only
Vertical ambient parameter harvester and equipment for monitoring power quality, can automatically generate the power curve report of actual blower fan and scheme
Table, to reach the purpose of accurate evaluation wind power generating set generating efficiency and power curve characteristic.
Fig. 7 is the schematic diagram of another embodiment of power curves of wind-driven generator sets characteristic detecting method of the present invention.It is preferred that,
The present embodiment can be performed by power curves of wind-driven generator sets Characteristics Detection system.After the step 602 of method shown in Fig. 6,
Methods described can also include：
Step 701, abnormal power signal gathering unit gathers the abnormal of wind power generating set by hard contact point signal line and believed
Number, wherein the abnormal signal, which is wind power generating set, is in the signal shut down or limited and sent during power operating states.
Step 702, abnormal power filter element is deleted during abnormal power signal gathering unit collects abnormal signal,
The active power value that equipment for monitoring power quality is received, with the active power value after being filtered, and will be active after filtering
Performance number is sent to data processing unit, and the step 603 of method shown in Fig. 6 is performed afterwards.
Many details of appropriate technical solution in power curves of wind-driven generator sets characteristic detecting method shown in Fig. 6 and Fig. 7
Described in detail in power curves of wind-driven generator sets Characteristics Detection system embodiment, here no longer narration in detail.
By implementing the present invention, following beneficial effect can be obtained：
1st, the present invention uses independent ambient parameter harvester and equipment for monitoring power quality, can automatically generate reality
The power curve report of blower fan and chart, and then reach accurate evaluation wind power generating set generating efficiency and power curve characteristic
Purpose.
2nd, the present invention calculates the reality obtained at current wind generator cabin altitude according to information such as cabin external environment temperature
Border atmospheric density, the standardization wind speed under standard air density is then calculated according to actual measurement wind speed, wind-force can be more accurately assessed
Generating set generating efficiency and power curve characteristic.
3rd, the preferred embodiment of the present invention replaces pressure sensor using height above sea level measuring instrument, according to current height above sea level
It is worth computer atmospheric pressure out of my cabin, reaches cost-effective purpose.
4th, the present invention can also show the power curve of two different time sections in same power, and can be right
Two power curve is compared, the power ascension effect that wind power generating set technological improvement is brought for comparison.
5th, the present invention can be compensated using the empirical value with laser radar anemometer comparing to actual measurement air speed value,
Obtained by compensation data algorithm in front of blade close to real wind speed, use the data formation data day Jing Guo compensation deals
Will.
6th, the present invention can be gathered wind power generating set by hard contact point signal line and be in shutdown or limit power operating states
Signal, filtering wind power generating set is in the active power value shut down or limited and gathered during power operating states, further ensures
The precision of detecting system.
So far, the present invention is described in detail.In order to avoid the design of the masking present invention, this area institute is not described public
Some details known.Those skilled in the art can be appreciated how to implement technology disclosed herein as described above, completely
Scheme.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can be by hardware
To complete, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
Description of the invention is provided for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be more preferably to illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The solution present invention is so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (9)
1. a kind of power curves of wind-driven generator sets Characteristics Detection system, it is characterised in that gathered including independent ambient parameter
Device, independent equipment for monitoring power quality, data processing unit, average air density acquiring unit, standardization wind speed are obtained
Unit, power curve generation unit, wherein：
Ambient parameter harvester, for gathering ambient parameter with very first time interval t1, wherein ambient parameter includes current wind
The outer atmospheric pressure B of fast V, cabin external environment temperature T, cabin external environment relative humidity, cabin, wherein the outer atmospheric pressure B of the cabin with
The current altitude value h of collection is associated, and ambient parameter harvester replaces pressure sensor using height above sea level measuring instrument,
According to current height above sea level angle value computer atmospheric pressure B out of my cabin；
Equipment for monitoring power quality, the active power for gathering wind power generating set with the second time interval t2；
Data processing unit, for handling the ambient parameter and active power that collect, to respectively obtain for the 3rd time
The average value of ambient parameter and active power in t3 is spaced, wherein the 3rd time interval is more than very first time interval and the second time
Interval；
Average air density acquiring unit, for according to atmospheric pressure average value B outside the cabin calculated in the 3rd time intervalt3, machine
Extravehicular environment relative humidity and cabin external environment temperature averages Tt3Obtain the average air density p in the 3rd time intervalt3；
Wind speed acquiring unit is standardized, for according to standard air density ρ0, mean wind speed V in the 3rd time intervalt3, it is average
Atmospheric density ρt3Calculate the standardization wind speed V under standard air densityn；
Power curve generation unit, it is raw for according to the standardization wind speed obtained in the period and active power mean value is specified
Into power curves of wind-driven generator sets, wherein, the specified period is more than the 3rd time interval；
Wherein, the system also includes abnormal power signal gathering unit and abnormal power filter element, wherein：
Abnormal power signal gathering unit, the abnormal signal for gathering wind power generating set by hard contact point signal line, wherein
The abnormal signal is that wind power generating set is in the signal shut down or limited and sent during power operating states；
Abnormal power filter element, for deleting during abnormal power signal gathering unit collects abnormal signal, electric energy matter
The active power value that receives of amount monitoring device, with the active power value after being filtered, and by the active power value after filtering
Data processing unit is sent to be handled.
2. detecting system according to claim 1, it is characterised in that
Average air density acquiring unit is according to formulaThe average air calculated in the 3rd time interval is close
Spend ρt3, wherein, R0It is the gas constant of dry air.
3. detecting system according to claim 1, it is characterised in that it is relative that the ambient parameter also includes cabin external environment
Humidity, wherein：
Average air density acquiring unit is according to formulaThe average air calculated in the 3rd time interval is close
Spend ρt3, wherein, R1It is humid air gas factor, R1With average cabin external environment temperature in the 3rd time interval and averagely outside cabin
Envionmental humidity is associated.
4. detecting system according to claim 1, it is characterised in that
Wind speed acquiring unit is standardized according to formulaCalculate the standard wind transmission under standard air density
Fast Vn。
5. detecting system according to claim 1, it is characterised in that
Ambient parameter harvester passes through formula
Computer atmospheric pressure out of my cabin.
6. detecting system according to claim 1, it is characterised in that
Power curve generation unit is remote monitoring server or local monitor server.
7. detecting system according to claim 1, it is characterised in that
Data processing unit is additionally operable to handle the ambient parameter and active power that collect, to respectively obtain for the 3rd time
Standard deviation, maximum and the minimum value of ambient parameter and active power in t3 are spaced, and is sent to power curve generation unit.
8. detecting system according to claim 7, it is characterised in that
Power curve generation unit is additionally operable to store and shows environment in multigroup 3rd time interval specified and obtained in the period
Average value, standard deviation, maximum and the minimum value of parameter and active power.
9. detecting system according to claim 1, it is characterised in that the also ring exchanger including wind field, wherein：
Power curve generation unit is connected by ring exchanger with data processing unit and standardization wind speed acquiring unit.
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| CN105298745B (en) * | 2015-09-25 | 2018-04-13 | 南车株洲电力机车研究所有限公司 | A kind of method of the lifting Wind turbines generated energy based on real-time air density change |
| CN105911467B (en) * | 2016-04-21 | 2019-02-12 | 华电电力科学研究院 | Wind turbines power curve under complicated landform examines appraisal procedure |
| CN107542627B (en) * | 2016-06-27 | 2020-12-01 | 中国船舶重工集团海装风电股份有限公司 | Method and system for drawing power curve of wind generating set |
| CN106646233A (en) * | 2016-12-27 | 2017-05-10 | 北京金风科创风电设备有限公司 | Device and method for testing electric energy quality of wind generating set |
| CN106704103B (en) * | 2017-01-05 | 2019-12-17 | 华北电力大学 | Wind turbine generator power curve acquisition method based on blade parameter self-learning |
| CN108509705B (en) * | 2018-03-26 | 2022-03-04 | 北京鉴衡认证中心有限公司 | Method and device for calculating power curve of wind generating set at specific site |
| CN109146323B (en) * | 2018-09-12 | 2021-08-03 | 国网辽宁省电力有限公司 | Fan efficiency evaluation method and device and computer storage medium |
| CN111146806A (en) * | 2020-01-03 | 2020-05-12 | 国电联合动力技术有限公司 | Active available output dynamic calculation optimization method for wind power plant and energy management platform |
| CN112267972B (en) * | 2020-10-22 | 2023-05-05 | 华能国际电力股份有限公司 | Intelligent judging method for abnormal power curve of wind turbine generator |
| CN114863651A (en) * | 2021-01-15 | 2022-08-05 | 湖南五凌电力科技有限公司 | Intelligent early warning method for monitoring state of auxiliary machine |
| CN112855435B (en) * | 2021-02-04 | 2022-10-21 | 华能国际电力股份有限公司重庆清洁能源分公司 | Wind power plant wind energy optimization method |
| CN114165392B (en) * | 2021-11-03 | 2024-08-09 | 华能射阳新能源发电有限公司 | Wind turbine generator power abnormality diagnosis method, device and storage medium |
| CN114017378A (en) * | 2021-11-04 | 2022-02-08 | 中广核全椒风力发电有限公司 | Curve deviation comparative analysis method based on fan position characteristic formation and application |
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