CN108590985A - A kind of wind generating set pitch control system accumulator property automatic testing method - Google Patents
A kind of wind generating set pitch control system accumulator property automatic testing method Download PDFInfo
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- CN108590985A CN108590985A CN201810349249.1A CN201810349249A CN108590985A CN 108590985 A CN108590985 A CN 108590985A CN 201810349249 A CN201810349249 A CN 201810349249A CN 108590985 A CN108590985 A CN 108590985A
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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
Abstract
The present invention discloses a kind of wind generating set pitch control system accumulator property automatic testing method, pass through wind power generating set emergency feathering mode, by voltage drop value when master control system monitoring blade feather position, blade accumulator feathering, the performance of single wind generator group single paddle accumulator can be accurately detected in a relatively short period of time, accurately and reliably, efficient and convenient.The detection work that progress variable pitch accumulator is periodically removed without wind power plant maintenance personnel can also eliminate potential " driving " accident hazard, improve the availability of wind power generating set, also promote the economic benefit of wind power generating set in time.
Description
Technical field
The present invention relates to a kind of wind generating set pitch control system accumulator property automatic testing methods.
Background technology
Wind energy is a kind of clean renewable green energy resource, and the amount of accumulateing is huge, Chinese southeastern coast, the Inner Mongol, Xinjiang and
Gansu one is very abundant with wind energy resources.Wind-power electricity generation is the principal mode of wind energy utilization, and wind-power electricity generation is in all new energy
One of the renewable energy power generation mode of most economy, on the largest scaleization exploit condition and commercialized development foreground.
With wind-force Industry Quick Development, " driving " accident is more and more, how effectively accurately to detect that performance declines
Accumulator, and can detect the performance of single wind generator group storage battery in a relatively short period of time, meanwhile, having can discharge
The regular ice storing time work of wind power plant maintenance personnel.
Traditional detection method is exactly that it is real then to carry out depth charge and discharge to battery using a kind of portable battery detection device
It tests, professional assessment is made to battery performance by the equipment.This detection needs to enter hub interior while needing to dismount to be checked
Battery, it has not been convenient to, increase human cost, and time-consuming in generally above 10 hours for a charge-discharge test.
With the development of Wind Power Generation Industry, wind-powered electricity generation peripheral product is constantly perfect, occurs a kind of online battery inspection at present
Measurement equipment has the behavior pattern advantage of real time on-line monitoring battery with conventional detection devices difference, the automatic testing method, leads to
It crosses master control system and voluntarily detects judgement accumulator property, be not necessarily to personnel's periodic maintenance.
Invention content
The invention overcomes the shortcomings of the above-mentioned technology and provides a kind of wind generating set pitch control accumulator sides of detection automatically
Method.
In order to solve the above technical problems, the invention is realized by the following technical scheme：
Including master control system, for feathering execute pitch-controlled system, for feathering execute drive system, which is characterized in that its
Detection method is as follows：
The first step, the master control system carries out automatic detection time timing, according to the maintenance period of variable pitch accumulator, in system
Middle setting variable pitch accumulator testing time interval；
Second step, the master control system judge wind power generating set according to current fan operation state, current wind conditions
Whether variable pitch accumulator automatic testing conditions are had；
Third walks, and the master control system is sent out wind power generating set emergency feathering test command by field bus communication agreement
It send to pitch-controlled system；
Control pitch motor and driver after the pitch-controlled system receives order, are driven blade variable pitch to 0 ° of position by the 4th step
It sets；
5th step, the pitch-controlled system controls pitch motor and driver driving blade executes emergency feathering test, the change
Oar system monitors blade feather position information, variable pitch battery tension information in real time in emergency feathering test process；
6th step, the pitch-controlled system will monitor that blade feather position information and variable pitch battery tension information pass through scene
Bus communication mode is sent to master control system；
7th step, the master control system will receive blade feather position information and analyze blade by paddle speed monitoring unit
Whether feathering speed is normal, meanwhile, variable pitch battery tension information is analyzed into variable pitch by blade feathering voltage monitoring unit and is stored
Whether battery pressure drop is normal.
The wind generating set pitch control system accumulator property automatic testing method, it is characterised in that：The master
The control system integration has blade position monitoring unit, blade battery tension monitoring unit during emergency feathering；
The blade position monitoring unit relies on master control system and is communicated with pitch-controlled system, the blade position that will be detected
Signal transmission is to master control system；
The blade battery tension monitoring unit relies on master control system and is communicated with pitch-controlled system, the change that will be detected
Paddle battery tension pressure drop signal is transmitted to master control system.
The wind generating set pitch control system accumulator property automatic testing method, it is characterised in that：The paddle
For tip speed monitoring unit mainly by paddle speed monitoring function module analysis blade position information, analysis method is as follows：
The first step：High level signal is triggered by enable signal, paddle speed monitoring function module is made to start work；
Second step：Paddle speed monitoring function module starts to take first blade position string variable value；
Third walks：Paddle speed monitoring function module started to take second blade position string variable by step cycle time
Value；
4th step：First angle value is carried out assignment by paddle speed monitoring function module；
5th step：Paddle speed monitoring function module takes second value angle value, will subtract each other with first value, and take the exhausted of difference
It is divided by value and step cycle time, calculates current paddle speed value；
6th step：Paddle speed monitoring function module, which detects, stops meter when paddle speed value is equal to or more than its inner setting value
It calculates；
7th step：Currently practical paddle speed is finally calculated according to entire calculating process in paddle speed monitoring function module
Value；
8th step：Practical paddle speed value is compared by the blade feathering speed setting value set with comparing function block；
9th step：When practical paddle speed is less than the blade feathering speed setting value of comparing function block, output high level letter
Number；
Tenth step：Master control system will quote blade feathering speed failure.
The wind generating set pitch control system accumulator property automatic testing method, it is characterised in that：The paddle
Leaf feathering voltage monitoring unit, analysis method are as follows：
The first step：Variable pitch battery tension is monitored by pitch-controlled system internal battery detection module；
Second step：Blade battery tension is sent to master control system by pitch-controlled system by field bus communication mode；
Third walks：Master control system will receive battery tension and carry out 20ms filtering, removal by functions of low-pass filter module
Battery tension transient peak；
4th step：High level signal is triggered when receiving enable signal, function of voltage monitoring module starts work；
5th step：Function of voltage monitoring module starts to take first battery tension string variable value, on the basis of this；
6th step：Function of voltage monitoring module starts to take second battery tension string variable value, function of voltage monitoring mould
Comparison command is executed inside block, if input value is more than initial value, input value assignment maximum value, such as input value are less than initially
Value, it is minimum value to define the value；
7th step：Function of voltage monitoring module reads a numerical value, and calculating difference every 20ms；
8th step：Function of voltage monitoring module calculating difference passes through the battery tension pressure drop setting value that is set with comparing function block
It is compared；
9th step：When the difference that input is compared is greater than the set value, high level signal is exported；
Tenth step：Master control system will quote blade accumulator pressure drop failure.
The wind generating set pitch control system accumulator property automatic testing method advantage of the present invention is as follows：It is sent out by wind-force
Motor group emergency feathering mode, by voltage drop value when master control system monitoring blade feather position, blade accumulator feathering, can compared with
The performance of single wind generator group single paddle accumulator is accurately detected in the short time, it is accurately and reliably, efficient and convenient.Nothing
It needs wind power plant maintenance personnel periodically to go to carry out the detection work of variable pitch accumulator, can also eliminate potential " driving " accident danger in time
Danger, improves the availability of wind power generating set, also promotes the economic benefit of wind power generating set.
Description of the drawings
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combines
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is wind generating set pitch control system accumulator property automatic testing method box logic chart of the present invention；
Fig. 2 is wind generating set structure figure of the present invention；
Fig. 3 is wind generating set pitch control system accumulator property automatic testing method speed monitoring control logic figure of the present invention；
Fig. 4 is wind generating set pitch control system accumulator property automatic testing method voltage monitoring control logic figure of the present invention；
Fig. 5 is wind generating set pitch control system accumulator property automatic testing method output waveform figure of the present invention.
Specific implementation mode
As shown in Figs. 1-5, wind generating set pitch control system accumulator property automatic testing method of the invention, including master
Control system, the pitch-controlled system executed for feathering, detection method are as follows：
The first step, the master control system carries out automatic detection time timing, according to the maintenance period of variable pitch accumulator, in system
Middle setting variable pitch accumulator testing time interval.
Second step, the master control system judge wind-power electricity generation according to current fan operation state, current wind conditions
Whether unit has the automatic testing conditions of variable pitch accumulator.
Third walks, and wind power generating set emergency feathering is tested by field bus communication agreement and ordered by the master control system
Order is sent to pitch-controlled system.
Control pitch motor and driver after the pitch-controlled system receives order, are driven blade variable pitch extremely by the 4th step
0 ° of position.
5th step, the pitch-controlled system controls pitch motor and driver driving blade executes emergency feathering test, institute
Pitch-controlled system is stated in emergency feathering test process, monitors blade feather position information, variable pitch battery tension information in real time.
6th step, the pitch-controlled system will monitor that blade feather position information and variable pitch battery tension information pass through
Field bus communication mode is sent to master control system.
7th step, the master control system will receive blade feather position information and be analyzed by paddle speed monitoring unit
Whether blade feathering speed is normal, meanwhile, variable pitch battery tension information is analyzed by blade feathering voltage monitoring unit and is become
Whether the pressure drop of paddle accumulator is normal.
Further, the master control system is integrated with blade position monitoring unit, blade electric power storage during emergency feathering
Cell voltage monitoring unit.The blade position monitoring unit relies on master control system and is communicated with pitch-controlled system, will detect
The blade position signal transmission arrived is to master control system；The blade battery tension monitoring unit relies on master control system and becomes
Oar system is communicated, and the variable pitch battery tension pressure drop signal detected is transmitted to master control system.
Further, the paddle speed monitoring unit mainly passes through paddle speed monitoring function module analysis blade position
Confidence ceases, and analysis method is as follows：
The first step：High level signal is triggered by enable signal, paddle speed monitoring function module is made to start work.
Second step：Paddle speed monitoring function module starts to take first blade position string variable value.
Third walks：Paddle speed monitoring function module started to take second blade position character string by step cycle time
Variate-value.
4th step：First angle value is carried out assignment by paddle speed monitoring function module.
5th step：Paddle speed monitoring function module takes second value angle value, will subtract each other with first value, and take difference
Absolute value be divided by with step cycle time, calculate current paddle speed value.
6th step：Paddle speed monitoring function module detects stops when paddle speed value is equal to or more than its inner setting value
Only calculate.
7th step：Currently practical blade speed is finally calculated according to entire calculating process in paddle speed monitoring function module
Angle value.
8th step：Practical paddle speed value is compared by the blade feathering speed setting value set with comparing function block
Compared with.
9th step：When practical paddle speed is less than the blade feathering speed setting value of comparing function block, high electricity is exported
Ordinary mail number.
Tenth step：Master control system will quote blade feathering speed failure.
Further, the blade feathering voltage monitoring unit, analysis method are as follows：
The first step：Variable pitch battery tension is monitored by pitch-controlled system internal battery detection module.
Second step：Blade battery tension is sent to master control system by pitch-controlled system by field bus communication mode.
Third walks：Master control system will receive battery tension and carry out 20ms filtering by functions of low-pass filter module,
Remove battery tension transient peak.
4th step：High level signal is triggered when receiving enable signal, function of voltage monitoring module starts work.
5th step：Function of voltage monitoring module starts to take first battery tension string variable value, using this as base
It is accurate.
6th step：Function of voltage monitoring module starts to take second battery tension string variable value, voltage monitoring work(
Energy inside modules execute comparison command, if input value is more than initial value, input value assignment maximum value, such as input value are less than
Initial value, it is minimum value to define the value.
7th step：Function of voltage monitoring module reads a numerical value, and calculating difference every 20ms；
8th step：Function of voltage monitoring module calculating difference passes through the battery tension pressure drop setting value that is set with comparing function block
It is compared.
9th step：When the difference that input is compared is greater than the set value, high level signal is exported.
Tenth step：Master control system will quote blade accumulator pressure drop failure.
Further：It when wind power generating set fault-free, is in standby, wind speed is less than 3m/s at this time, and at blade
In 89 ° of positions.Master control system controls starting storage battery sense command, and variable pitch instruction will be sent to variable pitch, makes blade variable pitch to 0 °.
When variable pitch receives the test signal, pitch-controlled system executes emergency feathering by accumulator and acts.Pitch-controlled system passes through variable pitch
Motor encoder or blade REDUNDANCY ENCODER detect blade position signal.Pitch-controlled system will be surveyed by field bus communication mode
Amount blade position signal biography is sent to master control system.Master control system will receive 1 position signal of blade and be input to paddle speed prison
Brake module.Meanwhile paddle speed monitoring function module receives " emergency-stop signal ", paddle speed monitoring function at this time
Module is started to work.
Paddle speed monitoring function module 1 takes a signal every 500ms.Meanwhile paddle speed monitoring function module 1
Acquisition 1 position signal of blade is compared with 90 ° of position signals.Stop signal when being greater than or equal to 90 ° of position such as position signal
Collecting work.By paddle speed monitoring function module 1 calculate output 1 feathering speed of blade, then by comparing functional block with
Master control system setting value is compared.When urgency signal triggers, by timer function block, normally closed letter is provided after the 2000ms that is delayed
Number.Pass through pulser function module delay 7000ms again.It is main when calculating emergency feathering speed at the appointed time while meeting
Control system will quote 1 feathering speed failure of blade.
Similarly, speed is also to be calculated by correlation function, and judge blade 2 feathering speed when 2 feathering of blade, 3 feathering of blade
Degree and 3 feathering of blade whether failure.
During emergency feathering, master control system is simultaneously also detected variable pitch battery tension.Detection process is specific
It is as follows：
Pitch-controlled system will detect battery tension, and master control system is transmitted to by field bus communication mode.1 accumulator of blade
Voltage is removed battery tension kurtosis during emergency feathering by functions of low-pass filter module 1, the filtering of 20ms,
In order to avoid wrong report.It is input to function of voltage monitoring mould by the voltage signal of filtering.Meanwhile function of voltage monitoring mould receives " tightly
Anxious stopping signal ", at this time function of voltage monitoring mould start-up operation.
Further, 1 battery tension of blade of output is calculated by function of voltage monitoring mould 1, then by comparing functional block
It is compared with master control system setting value.It calculates 1 accumulator pressure drop voltage of blade and is more than master control system setting value, paddle will be quoted
1 accumulator pressure drop rate failure of leaf.
Similarly, variable pitch accumulator pressure drop is more than master control system setting value when 2 feathering of blade, 3 feathering of blade, will also quote paddle
3 accumulator pressure drop failure of 2 accumulator pressure drop failure of leaf and blade.
When wind power generating set normal non-fault is run, blade angle adjusts blade angle between 0 ° ~ 30 ° at this time.
If wind power generating set is operated since failure itself executes emergency shutdown at this time, then master control system will also execute blade position signal
Machine variable pitch battery tension signal testing works.Specific test process is as follows：
When variable pitch receives the fault-signal, pitch-controlled system executes emergency feathering by accumulator and acts.Pitch-controlled system passes through
Pitch motor encoder or blade REDUNDANCY ENCODER detect blade position signal.Pitch-controlled system passes through live general line communication side
Formula will measure blade position signal biography and be sent to master control system.Master control system will receive 1 position signal of blade and be input to blade
Speed monitoring function module.Meanwhile paddle speed monitoring function module receives " emergency-stop signal ", paddle speed is supervised at this time
Brake module is started to work.
Further, paddle speed monitoring function module 1 " takes a signal every 500ms.Meanwhile paddle speed monitors
Function module 1 is compared 1 position signal of blade is acquired with 90 ° of position signals.When being greater than or equal to 90 ° of position such as position signal
Stop signal collecting work.The 1 feathering speed of blade of output is calculated by paddle speed monitoring unit, then by comparing functional block
It is compared with master control system setting value.When urgency signal triggers, by timer function block, provided after the 2000ms that is delayed normally closed
Signal.Pass through pulser function module delay 7000ms again.When calculating emergency feathering speed at the appointed time while meeting,
Master control system will quote 1 feathering speed failure of blade.
Similarly, speed is also to be calculated by correlation function, and judge blade 2 feathering speed when 2 feathering of blade, 3 feathering of blade
Degree and 3 feathering of blade whether failure.
During emergency feathering, master control system is simultaneously also detected variable pitch battery tension.Detection process is specific
It is as follows：Pitch-controlled system will detect battery tension, and master control system is transmitted to by live general line communication modes.Blade 1 stores
Cell voltage is removed battery tension kurtosis during emergency feathering by the filtering of functions of low-pass filter module 120ms
It removes, in order to avoid wrong report.It is input to function of voltage monitoring module by the voltage signal of filtering.Meanwhile function of voltage monitoring mould receives
To " emergency-stop signal ", at this time function of voltage monitoring mould start-up operation.The paddle of output is calculated by function of voltage monitoring module
1 battery tension of leaf, then be compared with master control system setting value by comparing functional block.Calculate 1 accumulator pressure drop of blade
Voltage is more than master control system setting value, will quote 1 accumulator pressure drop rate failure of blade.
Similarly, variable pitch accumulator pressure drop is more than master control system setting value when 2 feathering of blade, 3 feathering of blade, will also quote paddle
3 accumulator pressure drop failure of 2 accumulator pressure drop failure of leaf and blade.After the completion of test, master control system restarts timing wind-force hair
Electric set pitch control accumulator detects work automatically.
It is suitable to pressure drop monitoring during variable pitch accumulator feathering and blade during master control system is by unit emergency feathering
Speed monitoring judges accumulator property during paddle.Such as one Trouble Report of any of which, illustrate that accumulator property is problematic,
It is replaced.When master control system will quote any one event of blade accumulator pressure drop failure, blade feathering speed failure
Barrier indicates accumulator property problem.It needs that accumulator is detected or is replaced at this time.The executing agency of the pitch-controlled system wraps
Contain：Driver cabinet, accumulator tank, pitch motor, uni-drive gear box, mating sensor device etc..The driver cabinet is variable pitch
The system core, for the acquisition of various external signals and the output of control command.And communicated with master control system, signal biography will be collected
Lead master control system.The accumulator tank is pitch-controlled system emergency unit, is in an emergency in pitch-controlled system or power grid is asked
When topic, emergency feathering is realized by accumulator, thus by blade feathering to home, it is ensured that unit safety.The variable pitch
Motor, uni-drive gear box are that blade feathering executes structure in the process, and driving blade executes feathering action.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made by within principle etc., are all included in the scope of protection of the present invention.
Claims (4)
1. a kind of wind generating set pitch control system accumulator property automatic testing method, including master control system, hold for feathering
Capable pitch-controlled system, which is characterized in that its detection method is as follows：
The first step, the master control system carries out automatic detection time timing, according to the maintenance period of variable pitch accumulator, in system
Middle setting variable pitch accumulator testing time interval；
Second step, the master control system judge wind power generating set according to current fan operation state, current wind conditions
Whether variable pitch accumulator automatic testing conditions are had；
Third walks, and the master control system is sent out wind power generating set emergency feathering test command by field bus communication agreement
It send to pitch-controlled system；
Control pitch motor and driver after the pitch-controlled system receives order, are driven blade variable pitch to 0 ° of position by the 4th step
It sets；
5th step, the pitch-controlled system controls pitch motor and driver driving blade executes emergency feathering test, the change
Oar system monitors blade feather position information, variable pitch battery tension information in real time in emergency feathering test process；
6th step, the pitch-controlled system will monitor that blade feather position information and variable pitch battery tension information pass through scene
Bus communication mode is sent to master control system；
7th step, the master control system will receive blade feather position information and analyze blade by paddle speed monitoring unit
Whether feathering speed is normal, meanwhile, variable pitch battery tension information is analyzed into variable pitch by blade feathering voltage monitoring unit and is stored
Whether battery pressure drop is normal.
2. wind generating set pitch control system accumulator property automatic testing method according to claim 1, feature exist
In：The master control system is integrated with blade position monitoring unit, blade battery tension monitoring unit during emergency feathering；
The blade position monitoring unit relies on master control system and is communicated with pitch-controlled system, the blade position that will be detected
Signal transmission is to master control system；
The blade battery tension monitoring unit relies on master control system and is communicated with pitch-controlled system, the change that will be detected
Paddle battery tension pressure drop signal is transmitted to master control system.
3. wind generating set pitch control system accumulator property automatic testing method according to claim 1, feature exist
In：The paddle speed monitoring unit mainly passes through paddle speed monitoring function module analysis blade position information, analysis
Method is as follows：
The first step：High level signal is triggered by enable signal, paddle speed monitoring function module is made to start work；
Second step：Paddle speed monitoring function module starts to take first blade position string variable value；
Third walks：Paddle speed monitoring function module started to take second blade position string variable by step cycle time
Value；
4th step：First angle value is carried out assignment by paddle speed monitoring function module；
5th step：Paddle speed monitoring function module takes second value angle value, will subtract each other with first value, and take the exhausted of difference
It is divided by value and step cycle time, calculates current paddle speed value；
6th step：Paddle speed monitoring function module, which detects, stops meter when paddle speed value is equal to or more than its inner setting value
It calculates；
7th step：Currently practical paddle speed is finally calculated according to entire calculating process in paddle speed monitoring function module
Value；
8th step：Practical paddle speed value is compared by the blade feathering speed setting value set with comparing function block；
9th step：When practical paddle speed is less than the blade feathering speed setting value of comparing function block, output high level letter
Number；
Tenth step：Master control system will quote blade feathering speed failure.
4. wind generating set pitch control system accumulator property automatic testing method according to claim 1, feature exist
In：The blade feathering voltage monitoring unit, analysis method are as follows：
The first step：Variable pitch battery tension is monitored by pitch-controlled system internal battery detection module；
Second step：Blade battery tension is sent to master control system by pitch-controlled system by field bus communication mode；
Third walks：Master control system will receive battery tension and carry out 20ms filtering, removal by functions of low-pass filter module
Battery tension transient peak；
4th step：High level signal is triggered when receiving enable signal, function of voltage monitoring module starts work；
5th step：Function of voltage monitoring module starts to take first battery tension string variable value, on the basis of this；
6th step：Function of voltage monitoring module starts to take second battery tension string variable value, function of voltage monitoring mould
Comparison command is executed inside block, if input value is more than initial value, input value assignment maximum value, such as input value are less than initially
Value, it is minimum value to define the value；
7th step：Function of voltage monitoring module reads a numerical value, and calculating difference every 20ms；
8th step：Function of voltage monitoring module calculating difference passes through the battery tension pressure drop setting value that is set with comparing function block
It is compared；
9th step：When the difference that input is compared is greater than the set value, high level signal is exported；
Tenth step：Master control system will quote blade accumulator pressure drop failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810349249.1A CN108590985A (en) | 2018-04-18 | 2018-04-18 | A kind of wind generating set pitch control system accumulator property automatic testing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810349249.1A CN108590985A (en) | 2018-04-18 | 2018-04-18 | A kind of wind generating set pitch control system accumulator property automatic testing method |
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| Publication Number | Publication Date |
|---|---|
| CN108590985A true CN108590985A (en) | 2018-09-28 |
Family
ID=63611136
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| CN201810349249.1A Pending CN108590985A (en) | 2018-04-18 | 2018-04-18 | A kind of wind generating set pitch control system accumulator property automatic testing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470998A (en) * | 2019-08-11 | 2019-11-19 | 埃斯倍风电科技(青岛)有限公司 | A kind of backup battery health status test method of pitch-controlled system |
| CN110531275A (en) * | 2019-08-11 | 2019-12-03 | 埃斯倍风电科技(青岛)有限公司 | A kind of backup battery test method of pitch-controlled system |
| CN111997843A (en) * | 2020-08-26 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Backup power supply life health monitoring method and monitoring system |
| US11476685B2 (en) | 2019-09-09 | 2022-10-18 | General Electric Company | System and method for detecting battery faults in a pitch system of a wind turbine |
-
2018
- 2018-04-18 CN CN201810349249.1A patent/CN108590985A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470998A (en) * | 2019-08-11 | 2019-11-19 | 埃斯倍风电科技(青岛)有限公司 | A kind of backup battery health status test method of pitch-controlled system |
| CN110531275A (en) * | 2019-08-11 | 2019-12-03 | 埃斯倍风电科技(青岛)有限公司 | A kind of backup battery test method of pitch-controlled system |
| US11476685B2 (en) | 2019-09-09 | 2022-10-18 | General Electric Company | System and method for detecting battery faults in a pitch system of a wind turbine |
| CN111997843A (en) * | 2020-08-26 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Backup power supply life health monitoring method and monitoring system |
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