CN116517797A - Control method and system for lubrication of tooth surface of variable-pitch bearing of wind generating set - Google Patents
Control method and system for lubrication of tooth surface of variable-pitch bearing of wind generating set Download PDFInfo
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- CN116517797A CN116517797A CN202310439262.7A CN202310439262A CN116517797A CN 116517797 A CN116517797 A CN 116517797A CN 202310439262 A CN202310439262 A CN 202310439262A CN 116517797 A CN116517797 A CN 116517797A
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- 238000005461 lubrication Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000001960 triggered effect Effects 0.000 claims abstract description 16
- 239000004519 grease Substances 0.000 claims description 98
- 238000002347 injection Methods 0.000 claims description 45
- 239000007924 injection Substances 0.000 claims description 45
- 238000010009 beating Methods 0.000 claims description 15
- 230000001050 lubricating effect Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002354 daily effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
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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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- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a control method and a system for lubrication of a tooth surface of a variable-pitch bearing of a wind generating set, comprising the following steps: 1) Determining a timing period, the number of times of greasing, the pitch angle and the longest lubrication duration; 2) In a timing period of each unit, the unit state is used for judging three conditions: when the machine set is triggered to wait for wind or to fail or is in a continuous grid-connected state without waiting for wind or failure in one day, the machine set is triggered firstly, the machine set performs pitch-variable tooth surface lubrication and fat-liquoring under the condition, and after the fat-liquoring is completed, the machine set does not perform pitch-variable lubrication and fat-liquoring again in the day. The invention fully lubricates the tooth surface of the variable-pitch bearing without changing hardware, prolongs the service life of the variable-pitch bearing, reduces the maintenance cost of the wind generating set and improves the generating capacity of the wind generating set.
Description
Technical Field
The invention relates to the technical field of wind generating set control, in particular to a control method and a system for tooth surface lubrication of a variable-pitch bearing of a wind generating set.
Background
With the development of wind power technology, large-scale variable-speed variable-pitch wind generating sets are gradually realized in large scale and market. The whole machine manufacturer pays attention to daily maintenance and repair of large parts, wherein the tooth surface of the variable-pitch bearing is used as a key part of wind power generation equipment, and a stable and reliable control method is needed to realize lubrication of the tooth surface of the variable-pitch bearing.
The pitch bearing flanks of wind power plants are typically equipped with a centralized lubrication system. The centralized lubrication system can be used for filling lubricating grease to the tooth surface of the pitch bearing so as to reduce friction and heat of the tooth surface of the pitch bearing in the pitch process, so that the pitch process is smoother.
The existing 0-degree tooth surface lubrication structure adopts a lubrication pinion arranged beside a driving tooth. The lubricating pinion first smears grease on the driving teeth, and the driving teeth transfer and smear the grease on the tooth surfaces of the bearings through rotation, so that the method does not directly lubricate the tooth surfaces of the meshing teeth. The fan operates under the rated wind speed, and the blades of the fan are required to be kept at the 0-degree position all the time, so that the pitch speed reducer and the pitch bearing are meshed at the 0-degree tooth position for a long time. If the tooth surface is less in grease hanging amount, poor lubrication of the pitch gear surface can be caused, and long-term operation can lead to corrosion and abrasion of the 0-degree tooth of the pitch bearing and the meshing gear surface corresponding to the pitch pinion, even pitting and pit. According to the situation mastered by wind power plant tracking service, the tooth surface abrasion of the pitch bearing is a more prominent phenomenon.
The prior patent literature focuses on timing and quantitative lubrication or manual lubrication of the tooth surface of the variable-pitch bearing, and no related control strategy and method for the tooth surface of the variable-pitch bearing under the installed centralized lubrication system exist.
At present, two main technical schemes in industry solve the problem of lubrication of a variable pitch bearing:
1. because the variable pitch bearing is positioned in the hub, the manual lubrication also needs to be stopped, so that the maintenance cost of the wind generating set is increased and a certain amount of generated energy is lost;
2. the most common control mode is that the lubrication time and the lubrication frequency are automatically controlled by a lubrication pump in the variable pitch, but the interval between an oil outlet point and a variable pitch 0-degree tooth surface with a plurality of teeth cannot directly lubricate the 0-degree position due to the limitation of the fixed position of a lubrication pinion. The lubrication effect of the tooth surface of the variable-pitch bearing is poor or the variable-pitch bearing fails, even if the variable-pitch motor does not rotate during lubrication, the lubrication grease is accumulated in one place, the effect is poor, and the grease can be thrown to any place in the hub by centrifugal force, so that the working environment is polluted.
Disclosure of Invention
The first aim of the invention is to overcome the defects and shortcomings of the prior art and provide a control method for lubricating the tooth surface of a variable pitch bearing of a wind generating set, which can fully lubricate the tooth surface of the variable pitch bearing without replacing hardware, prolong the service life of the variable pitch bearing, reduce the maintenance cost of the wind generating set and improve the generating capacity of the wind generating set.
The invention provides a control system for lubrication of tooth surfaces of a variable-pitch bearing of a wind generating set.
The first object of the invention is achieved by the following technical scheme: a control method for tooth surface lubrication of a variable-pitch bearing of a wind generating set comprises the following steps:
1) Determining a timing period, the number of times of greasing, the pitch angle and the longest lubrication duration;
2) In a timing period of each unit, the unit state is used for judging three conditions: when the machine set is triggered to wait for wind or to fail or is in a continuous grid-connected state without waiting for wind or failure in one day, the machine set is triggered firstly, the machine set performs pitch-variable tooth surface lubrication and fat-liquoring under the condition, and after the fat-liquoring is completed, the machine set does not perform pitch-variable lubrication and fat-liquoring again in the day.
Further, in step 1), a timing period is determined, specifically as follows:
the variable pitch tooth surface lubrication system operates once a day, zero points of the unit are mutually separated by 15 minutes, the set time is required to be consistent with the interface time, and the calculation formula is as follows:
s 0 ＝abs(f x -96)*15(1)
wherein f x Is the x-th machine set, s 0 And the zero point is the timing point of the xth machine set.
Further, in step 1), the number of fatliquoring is determined as follows:
the variable pitch tooth surface lubrication system operates once a day, grease is injected g times, and according to design requirements, the daily grease injection amount of each gear is h liters, and the daily grease injection frequency calculation formula is as follows:
g＝(h*1000*a)/b (2)
wherein a is the number of outlets of the lubricating pump, b is the milliliter amount from each time to the pinion, and g is the number of times of grease beating per day.
Further, in step 1), the pitch angle is determined as follows:
when the propeller is started, the driving gear rotates anticlockwise, 0-degree teeth are lubricated, grease can be accurately brought to the 0-degree teeth by injecting grease at fixed points when n teeth are left, and the corresponding calculation formula is as follows:
p＝(360/m)*n (3)
wherein m is the number of teeth of an inner gear ring of the variable pitch bearing, n is the number of teeth of a fixed-point grease injection position separated by 0 DEG, and p is the pitch angle of a blade at the grease injection position.
Further, in step 1), the longest lubrication duration is determined, specifically as follows:
when the centralized lubrication fault occurs, feedback signals of times cannot be received for a period of time until the centralized lubrication fault is reported, if no additional judging condition is added, the operation is caused to be performed for a long time at a certain point in the pitch process, and the corresponding calculation formula is as follows:
t＝[(b/k)*60]*g (4)
where k is milliliter per minute of the lubrication pump, and t is the longest time of greasing, i.e., the longest lubrication duration, in the number of greases.
Further, in step 2), the air-stop greasing, the fault start greasing or the continuous grid-connected greasing is executed according to three different conditions of the unit in a timing period.
Further, the specific conditions of the greasing to be stopped by wind are as follows:
in a timing period of each unit, if the unit triggers to stop the machine, the wind speed and the wind direction of the unit are combined, the blade angle and whether the grease injecting condition exists in the same day are judged, the condition is met, the unit enters a running mode of the machine for blowing the grease, a variable pitch tooth surface lubricating pump is started to inject the grease before the machine is started, the start of the propeller is started after the jth grease injecting time is monitored in a program, when the blade angle reaches p DEG, the propeller is suspended, the blades of the unit swing back and forth at the p DEG +/-6 DEG according to the set variable pitch speed until the jth+10 grease injecting time is monitored, the blades continue to open to 0 DEG and swing back and forth for 2 times at-1 DEG to 10 DEG, and then the standby state is returned, and the grease injecting is finished after the unit monitors g times or the longest grease injecting time t is met; if the rotating speed of the generator exceeds the set rotating speed in the greasing process, the unit directly receives the propeller to 89 degrees, centralized lubrication continues to be beaten g times, then the lubrication greasing mode is exited, and the centralized lubrication action is not triggered any more in the timing period.
Further, the specific conditions of the fault start-up grease beating are as follows:
in a timing period of each unit, if the unit triggers a fault first, when the unit is started after the fault stops, the variable pitch gear surface lubrication pump is started to inject grease first before the start of the unit, the start of the unit is started after the jth grease injection time is monitored, when the angle of the blade reaches p DEG, the start of the unit is paused, the unit continues to start the unit until the jth+10th grease injection time is monitored, and the grease injection is finished after the g-th grease injection time is monitored or the longest grease injection time t is met.
Further, the specific conditions of the continuous grid-connected post-greasing are as follows:
in a timing period of each unit, no grease injection is carried out, active feathering is needed, a variable pitch tooth surface lubrication pump is started before active feathering, feathering is started after j grease injection times are monitored, when the angle of a blade reaches p DEG, feathering is suspended until j+10th grease injection is monitored, the feathering is changed into the feathering, and grease injection is finished after g grease injection times are monitored or the longest grease injection time t is met.
The second object of the invention is achieved by the following technical scheme: a control system for the lubrication of the tooth surface of a variable-pitch bearing of a wind generating set is used for realizing the control method for the lubrication of the tooth surface of the variable-pitch bearing of the wind generating set, and comprises the following steps:
the parameter determining module is used for determining a timing period, the number of times of greasing, the pitch angle and the longest lubrication duration;
the tooth surface lubrication control module is used for judging according to the state of each unit in a timing period of each unit, and three conditions are provided: when the unit is triggered to wait for wind or fails or is in a continuous grid-connected state without waiting for wind or fails, the unit is controlled to perform pitch-variable tooth surface lubrication and fat liquoring under the condition, and after the fat liquoring is completed, the unit does not perform pitch-variable lubrication and fat liquoring again.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, the gear surface of the variable-pitch bearing is lubricated according to three different conditions (grease beating under the condition of wind, grease beating after starting a fault and grease beating after continuous grid connection) of the unit in a timing period, so that the unit can be lubricated every day, the grease is brought to the gear position for 0 degree lubrication, the gear of 0 degree is lubricated every day under most conditions, a certain amount of grease is obtained for lubrication, most lubrication is carried out in the pitch process, the pitch is changed while lubrication, the gear surface of the variable-pitch bearing is enabled to obtain a better lubrication effect, and no hardware is required to be added, namely the cost is not required to be increased, the gear surface of the variable-pitch bearing is fully lubricated, and the generating capacity of the wind generating set is improved.
Drawings
FIG. 1 is a diagram of a grease beating and pitch lubrication chart for a wind.
Fig. 2 is a flow chart of the pitch control for standby wind.
FIG. 3 is a failed start-up pitch lubrication map.
Fig. 4 is a fault start-up lubrication flow chart.
FIG. 5 is a connection grid-tie pitch lubrication diagram.
FIG. 6 is a flow chart of connection grid-tie pitch lubrication.
Fig. 7 is a block diagram of a system according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Example 1
The embodiment discloses a control method for lubrication of a tooth surface of a variable pitch bearing of a wind generating set, which comprises the following steps:
1) Determining a timing period, the number of times of greasing, the pitch angle and the longest lubrication duration;
a. determining a timing period:
the variable pitch tooth surface lubrication system operates once a day, zero points of the unit are mutually separated by 15 minutes, the set time is required to be consistent with the interface time, and the calculation formula is as follows:
s 0 ＝abs(f x -96)*15 (1)
wherein f x Is the x-th machine set, s 0 And the zero point is the timing point of the xth machine set.
b. Determining the number of times of fat liquoring:
the variable pitch tooth surface lubrication system operates once a day, grease is injected g times, and according to design requirements, the daily grease injection amount of each gear is h liters, and the daily grease injection frequency calculation formula is as follows:
g＝(h*1000*a)/b (2)
wherein a is the number of outlets of the lubricating pump, b is the milliliter amount from each time to the pinion, and g is the number of times of grease beating per day.
c. Determining a pitch angle:
when the propeller is started, the driving gear rotates anticlockwise, 0-degree teeth are lubricated, grease can be accurately brought to the 0-degree teeth by injecting grease at fixed points when n teeth are left, and the corresponding calculation formula is as follows:
p＝(360/m)*n (3)
wherein m is the number of teeth of an inner gear ring of the variable pitch bearing, n is the number of teeth of a fixed-point grease injection position separated by 0 DEG, and p is the pitch angle of a blade at the grease injection position.
d. Determining the longest lubrication duration:
when the centralized lubrication fault occurs, feedback signals of times cannot be received for a period of time until the centralized lubrication fault is reported, if no additional judging condition is added, the operation is caused to be performed for a long time at a certain point in the pitch process, and the corresponding calculation formula is as follows:
t＝[(b/k)*60]*g(4)
where k is milliliter per minute of the lubrication pump, and t is the longest time of greasing, i.e., the longest lubrication duration, in the number of greases.
2) In a timing period (24 h) of each unit, the unit state is used for judging three conditions: the machine set is triggered to wait for wind, or fails, or is not triggered to wait for wind and fails and is in a continuous grid-connected state in the day, according to three different conditions of the machine set in a timing period, the machine set is stopped to perform greasing during wind, is started to perform greasing during failure or is continuously connected to perform greasing after being subjected to grid-connected, namely, the machine set is triggered firstly, the machine set performs pitch-variable tooth surface lubrication greasing under the condition, and the pitch-variable lubrication greasing is not performed in the day after the greasing is completed.
a. And (5) stopping the machine for greasing after wind is stopped:
in a timing period (24 h) of each unit, if the unit is triggered to be stopped by wind firstly, and after the wind speed and the wind direction of the unit, the blade angle and the presence or absence of grease beating on the same day are judged, the unit enters a running mode of grease beating by wind, a variable pitch tooth surface lubrication pump is started to pump grease before the unit is started, the jth grease beating times are monitored in a program, the start of the paddle is started, when the blade angle reaches p DEG, the paddle is suspended, the unit blade swings back and forth at p DEG +/-6 DEG according to a set variable pitch rate, until the j+10th grease beating times are monitored, the paddle is continuously started to 0 DEG, swings back and forth for 2 times at-1 DEG to 10 DEG, and then the unit returns to a standby state, and the grease beating is finished after the unit monitors g times or the longest grease beating time t is met; if the rotating speed of the generator exceeds the set rotating speed in the greasing process, the unit directly receives paddles to 89 degrees, centralized lubrication continues to be beaten g times, then the lubrication greasing mode is exited, and the centralized lubrication action is not triggered any more in a timing period; the lubrication of the grease and the pitch to be beaten by wind is shown in figure 1, and the flow of the grease and the pitch to be beaten by wind is shown in figure 2.
b. And (5) starting the machine to perform grease beating after failure:
in a timing period (24 h) of each unit, if the unit triggers a fault firstly, when the unit is started after the fault stops, starting the variable pitch tooth surface lubrication pump for injecting grease before starting the pump, starting the pump after the jth grease injection time is monitored, suspending the pump when the blade angle reaches p DEG, continuing to start the pump until the j+10th grease injection time is monitored, and ending the grease injection after the g-th grease injection time is monitored or the longest grease injection time t is met; the fault start variable pitch lubrication is shown in fig. 3, and the fault start variable pitch flow is shown in fig. 4.
c. And (3) degreasing after continuous grid connection:
in a timing period (24 h) of each unit, no grease injection is carried out, active feathering is needed, a variable pitch tooth surface lubrication pump is started before active feathering, feathering is started after j grease injection times are monitored, when the angle of a blade reaches p DEG, feathering is suspended until j+10th grease injection is monitored, the feathering is changed into pitch opening, and grease injection is finished after g grease injection times are monitored or the longest grease injection time t is met; the continuous grid-connected pitch lubrication is shown in fig. 5, and the continuous grid-connected pitch lubrication flow is shown in fig. 6.
Example 2
The embodiment discloses a control system for lubrication of a gear surface of a variable-pitch bearing of a wind generating set, which is used for realizing the control method for lubrication of the gear surface of the variable-pitch bearing of the wind generating set in embodiment 1, as shown in fig. 7, and comprises the following functional modules:
the parameter determining module is used for determining a timing period, the number of times of greasing, the pitch angle and the longest lubrication duration;
the tooth surface lubrication control module is used for judging according to the state of each unit in a timing period of each unit, and three conditions are provided: when the unit is triggered to wait for wind or fails or is in a continuous grid-connected state without waiting for wind or fails, the unit is controlled to perform pitch-variable tooth surface lubrication and fat liquoring under the condition, and after the fat liquoring is completed, the unit does not perform pitch-variable lubrication and fat liquoring again.
Example 3
The embodiment discloses a storage medium storing a program which, when executed by a processor, realizes the control method for lubrication of the tooth surface of a variable pitch bearing of a wind turbine generator set according to embodiment 1.
The storage medium in this embodiment may be a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a usb disk, a removable hard disk, or the like.
Example 4
The embodiment discloses a computing device, which comprises a processor and a memory for storing a program executable by the processor, wherein when the processor executes the program stored by the memory, the control method for lubricating the tooth surface of the variable-pitch bearing of the wind generating set in the embodiment 1 is realized.
The computing device described in this embodiment may be a desktop computer, a notebook computer, a smart phone, a PDA handheld terminal, a tablet computer, a programmable logic controller (PLC, programmable Logic Controller), or other terminal devices with processor functionality.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (10)
1. The control method for the lubrication of the tooth surface of the variable-pitch bearing of the wind generating set is characterized by comprising the following steps of:
1) Determining a timing period, the number of times of greasing, the pitch angle and the longest lubrication duration;
2) In a timing period of each unit, the unit state is used for judging three conditions: when the machine set is triggered to wait for wind or to fail or is in a continuous grid-connected state without waiting for wind or failure in one day, the machine set is triggered firstly, the machine set performs pitch-variable tooth surface lubrication and fat-liquoring under the condition, and after the fat-liquoring is completed, the machine set does not perform pitch-variable lubrication and fat-liquoring again in the day.
2. The method for controlling the lubrication of the tooth surfaces of a variable pitch bearing of a wind generating set according to claim 1, wherein in step 1), a timing period is determined, specifically as follows:
the variable pitch tooth surface lubrication system operates once a day, zero points of the unit are mutually separated by 15 minutes, the set time is required to be consistent with the interface time, and the calculation formula is as follows:
s 0 ＝abs(f x -96)*15 (1)
wherein f x Is the x-th machine set, s 0 And the zero point is the timing point of the xth machine set.
3. The control method for lubrication of a tooth surface of a variable pitch bearing of a wind generating set according to claim 2, wherein in step 1), the number of greasing times is determined, specifically as follows:
the variable pitch tooth surface lubrication system operates once a day, grease is injected g times, and according to design requirements, the daily grease injection amount of each gear is h liters, and the daily grease injection frequency calculation formula is as follows:
g＝(h*1000*a)/b (2)
wherein a is the number of outlets of the lubricating pump, b is the milliliter amount from each time to the pinion, and g is the number of times of grease beating per day.
4. The control method for lubrication of a rotor bearing tooth surface of a wind turbine generator set according to claim 3, wherein in step 1), a rotor opening angle is determined, specifically as follows:
when the propeller is started, the driving gear rotates anticlockwise, 0-degree teeth are lubricated, grease can be accurately brought to the 0-degree teeth by injecting grease at fixed points when n teeth are left, and the corresponding calculation formula is as follows:
p＝(360/m)*n(3)
wherein m is the number of teeth of an inner gear ring of the variable pitch bearing, n is the number of teeth of a fixed-point grease injection position separated by 0 DEG, and p is the pitch angle of a blade at the grease injection position.
5. The control method for lubrication of a rotor bearing tooth surface of a wind generating set according to claim 4, wherein in step 1), a longest lubrication duration is determined, specifically as follows:
when the centralized lubrication fault occurs, feedback signals of times cannot be received for a period of time until the centralized lubrication fault is reported, if no additional judging condition is added, the operation is caused to be performed for a long time at a certain point in the pitch process, and the corresponding calculation formula is as follows:
t＝[(b/k)*60]*g(4)
where k is milliliter per minute of the lubrication pump, and t is the longest time of greasing, i.e., the longest lubrication duration, in the number of greases.
6. The method for controlling tooth surface lubrication of a variable pitch bearing of a wind generating set according to claim 5, wherein in step 2), the greasing to be stopped by wind, the greasing to be started by a fault or the greasing to be started by continuous grid connection are executed according to three different conditions of the set in a timing period.
7. The control method for lubrication of the tooth surface of the variable-pitch bearing of the wind generating set according to claim 6, wherein the specific conditions of the to-be-wind stop greasing are as follows:
in a timing period of each unit, if the unit triggers to stop the machine, the wind speed and the wind direction of the unit are combined, the blade angle and whether the grease injecting condition exists in the same day are judged, the condition is met, the unit enters a running mode of the machine for blowing the grease, a variable pitch tooth surface lubricating pump is started to inject the grease before the machine is started, the start of the propeller is started after the jth grease injecting time is monitored in a program, when the blade angle reaches p DEG, the propeller is suspended, the blades of the unit swing back and forth at the p DEG +/-6 DEG according to the set variable pitch speed until the jth+10 grease injecting time is monitored, the blades continue to open to 0 DEG and swing back and forth for 2 times at-1 DEG to 10 DEG, and then the standby state is returned, and the grease injecting is finished after the unit monitors g times or the longest grease injecting time t is met; if the rotating speed of the generator exceeds the set rotating speed in the greasing process, the unit directly receives the propeller to 89 degrees, centralized lubrication continues to be beaten g times, then the lubrication greasing mode is exited, and the centralized lubrication action is not triggered any more in the timing period.
8. The control method for lubrication of the tooth surface of the variable pitch bearing of the wind generating set according to claim 6, wherein the specific conditions of the fault start-up grease are as follows:
in a timing period of each unit, if the unit triggers a fault first, when the unit is started after the fault stops, the variable pitch gear surface lubrication pump is started to inject grease first before the start of the unit, the start of the unit is started after the jth grease injection time is monitored, when the angle of the blade reaches p DEG, the start of the unit is paused, the unit continues to start the unit until the jth+10th grease injection time is monitored, and the grease injection is finished after the g-th grease injection time is monitored or the longest grease injection time t is met.
9. The control method for the lubrication of the tooth surface of the variable-pitch bearing of the wind generating set according to claim 6, wherein the specific conditions of the continuous grid-connected post-greasing are as follows:
in a timing period of each unit, no grease injection is carried out, active feathering is needed, a variable pitch tooth surface lubrication pump is started before active feathering, feathering is started after j grease injection times are monitored, when the angle of a blade reaches p DEG, feathering is suspended until j+10th grease injection is monitored, the feathering is changed into the feathering, and grease injection is finished after g grease injection times are monitored or the longest grease injection time t is met.
10. A control system for wind turbine generator system pitch bearing tooth surface lubrication, characterized by a control method for implementing the wind turbine generator system pitch bearing tooth surface lubrication according to any one of claims 1 to 9, comprising:
the parameter determining module is used for determining a timing period, the number of times of greasing, the pitch angle and the longest lubrication duration;
the tooth surface lubrication control module is used for judging according to the state of each unit in a timing period of each unit, and three conditions are provided: when the unit is triggered to wait for wind or fails or is in a continuous grid-connected state without waiting for wind or fails, the unit is controlled to perform pitch-variable tooth surface lubrication and fat liquoring under the condition, and after the fat liquoring is completed, the unit does not perform pitch-variable lubrication and fat liquoring again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310439262.7A CN116517797A (en) | 2023-04-21 | 2023-04-21 | Control method and system for lubrication of tooth surface of variable-pitch bearing of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310439262.7A CN116517797A (en) | 2023-04-21 | 2023-04-21 | Control method and system for lubrication of tooth surface of variable-pitch bearing of wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN116517797A true CN116517797A (en) | 2023-08-01 |
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| CN202310439262.7A Pending CN116517797A (en) | 2023-04-21 | 2023-04-21 | Control method and system for lubrication of tooth surface of variable-pitch bearing of wind generating set |
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| Country | Link |
|---|---|
| CN (1) | CN116517797A (en) |
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2023
- 2023-04-21 CN CN202310439262.7A patent/CN116517797A/en active Pending
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