CN113464383A - Self-checking method for yaw system of wind generating set - Google Patents
Self-checking method for yaw system of wind generating set Download PDFInfo
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- CN113464383A CN113464383A CN202110970283.2A CN202110970283A CN113464383A CN 113464383 A CN113464383 A CN 113464383A CN 202110970283 A CN202110970283 A CN 202110970283A CN 113464383 A CN113464383 A CN 113464383A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012423 maintenance Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 24
- 230000002159 abnormal effect Effects 0.000 claims description 19
- 230000004044 response Effects 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 3
- 238000010276 construction Methods 0.000 abstract description 6
- 238000011835 investigation Methods 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 201000009482 yaws Diseases 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
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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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0264—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
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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
- F03D80/50—Maintenance or repair
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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
Abstract
The invention discloses a self-checking method of a yaw system of a wind generating set, which comprises the following steps: firstly, the control system activates a self-checking state of the yaw system, then the wind generating set is adjusted to a maintenance mode, the wind turbine blades return to a stop position, and then the control system starts a self-checking program and controls the yaw system to drive the engine room to sequentially yaw leftwards and rightwards according to preset detection parameters. In the yawing process, the control system acquires operation data such as system pressure, actual yawing position, cabin wind direction and operation state of a yawing motor of the wind generating set. And finally, the control system judges whether the yaw system works normally in the process of yawing leftwards and rightwards according to the operation data. The whole self-checking process does not need manual on-site investigation, the testing efficiency of the yaw system is improved, and the construction time of the wind generating set is shortened.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a self-checking method for a yaw system of a wind generating set.
Background
The yaw system of the wind generating set is a wind power generator set wind device, and when the direction of a wind speed vector changes, the wind direction can be quickly and stably aligned, so that the wind wheel can obtain the maximum wind energy. The normal work of the yaw system can ensure the maximum wind energy absorption of the wind generating set.
After the construction of the wind generating set is completed, the wind generating set needs to be debugged, and only after the complete machine of the wind generating set is debugged, the wind generating set can be merged into a power grid for power supply. In the debugging process of the wind generating set, the testing work of the yaw system is complicated, the checking of the working performance of the yaw system is usually performed manually by an operation and maintenance engineer regularly arriving at the wind generating set, the efficiency is low, and time and labor are wasted. Therefore, a technology capable of improving the inspection efficiency of the yaw system and shortening the construction time of the wind turbine generator set is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the self-checking method for the yaw system of the wind generating set, the wind generating set can automatically detect the yaw system, the detection efficiency is improved, and the construction time of the wind generating set is shortened.
The self-checking method for the yaw system of the wind generating set is provided, and in a first implementation mode, the self-checking method comprises the following steps:
activating a self-checking state of the yaw system;
adjusting the wind generating set to a maintenance mode;
starting a self-checking program, and controlling a yaw system to yaw according to preset detection parameters;
acquiring operation data of the wind generating set in the yaw process in real time;
and determining the operating state of the yaw system through the collected operating data.
With reference to the first implementable manner, in a second implementable manner, the activating a yaw system self-checking state includes:
the self-checking state of the yaw system is activated at regular time according to the running time of the wind generating set;
or activating the self-checking state of the yaw system according to the received self-checking instruction.
With reference to the first implementable manner, in a third implementable manner, the adjusting of the wind turbine generator system to the maintenance mode includes:
controlling the wind generating set to return to a preset stop position according to a preset stop speed;
acquiring variable pitch data of the wind generating set in real time;
and judging whether the variable pitch data meet the condition parameters corresponding to the maintenance mode, and responding to the condition parameters met by the variable pitch data, and enabling the wind generating set to enter the maintenance mode.
With reference to the third implementable manner, in a fourth implementable manner, the condition parameters include a shutdown position, a generator rotation speed threshold, a wind turbine rotation speed threshold, and a unit state.
With reference to the first implementation manner, in a fifth implementation manner, the controlling the yaw system to yaw according to the preset detection parameter includes: and controlling a hydraulic system of the yaw system to reduce the system pressure to a preset pressure threshold value, and controlling the yaw system to yaw to a preset yaw position according to a preset yaw speed.
With reference to the first implementable manner, in a sixth implementable manner, determining the operating state of the yaw system by using the collected operating data includes:
judging whether the system pressure in the operation data is smaller than the minimum value of a preset pressure threshold range;
in response to the pressure being smaller than the minimum value of the pressure threshold range, increasing the system pressure of the hydraulic system to be within the pressure threshold range, and recording the number of times of pressurization of the hydraulic system;
judging whether the supercharging frequency exceeds a preset frequency threshold value or not;
in response to exceeding the time threshold, the yaw system is abnormal.
With reference to any one of the first to sixth implementable manners, in a seventh implementable manner, determining the operating state of the yaw system by using the collected operating data includes:
calculating an actual yaw speed of the yaw system through the operation data;
judging whether the speed change condition between the actual yaw speed and the rated yaw speed is within a preset speed change threshold range or not;
in response to the difference not being within the speed threshold range, an anomaly in the yaw system occurs.
With reference to any one of the first to seventh implementable manners, in an eighth implementable manner, determining the operating state of the yaw system by using the collected operating data includes:
calculating a theoretical yaw position of the yaw system through the operation data;
judging whether the position change condition between the actual yaw position and the theoretical yaw position in the operation data is within a preset position change threshold range or not;
in response to the position change condition not being within the position change threshold range, an anomaly in the yaw system occurs.
With reference to any one of the first to the eighth implementable manners, in a ninth implementable manner, determining the operating state of the yaw system by using the collected operating data includes:
determining the variation trend of the wind direction of the engine room through the operation data;
judging whether the change trend is consistent with a yaw direction;
and responding to the inconsistency of the variation trend and the yaw direction, and enabling the yaw system to be abnormal.
With reference to any one of the first to ninth implementable manners, in a tenth implementable manner, determining the operating state of the yaw system by using the collected operating data includes:
determining the operation state of the yaw motor through the operation data;
judging whether the running state of the yaw motor is normal or not;
and responding to the abnormal operation state of the yaw motor, and the abnormity of the yaw system occurs.
Has the advantages that: by adopting the self-checking method of the yaw system of the wind generating set, the wind generating set can automatically detect the yaw system of the wind generating set so as to determine whether the yaw system is abnormal or not, manual on-site investigation is not needed, the testing efficiency of the yaw system is improved, and the construction time of the wind generating set is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
Fig. 1 is a flowchart of a self-checking method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a wind turbine generator set adjusted to a maintenance mode according to the present invention;
FIG. 3 is a flow chart illustrating a self-test of the hydraulic system provided by the present invention;
FIG. 4 is a flow chart for self-checking yaw rate according to an embodiment of the present invention;
FIG. 5 is a flow chart for self-checking yaw position according to an embodiment of the present invention;
FIG. 6 is a flow chart of a self-test of yaw direction according to an embodiment of the present invention;
fig. 7 is a flow chart of self-checking of a yaw motor according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In a first embodiment, a flow chart of a self-checking method of a yaw system of a wind generating set shown in fig. 1 includes:
step 1, activating a self-checking state of a yaw system;
step 2, adjusting the wind generating set to a maintenance mode;
step 3, starting a self-checking program, and controlling a yaw system to yaw according to preset detection parameters;
step 4, acquiring operation data of the wind generating set in the yaw process in real time;
and 5, determining the operation state of the yaw system through the acquired operation data. Specifically, the method comprises the following steps:
firstly, a control system of the wind generating set activates a self-checking state of a yaw system, and the control system can activate the self-checking state at regular time or activate the self-checking state after receiving a self-checking instruction of a remote control terminal.
And then, the control system adjusts the wind generating set into a maintenance mode, adjusts the wind generating set into a shutdown state, and returns the propeller to the shutdown position according to the preset shutdown speed.
And then, the control system starts a self-checking program, controls the yaw system to drive the cabin of the wind generating set to yaw leftwards according to preset detection parameters until the yaw is finished, and controls the yaw system to drive the cabin of the wind generating set to yaw rightwards according to the preset detection parameters.
In the yawing process, the control system acquires operation data of the wind generating set through an original detection sensor of the wind generating set, such as system pressure, an actual yawing position, a cabin wind direction, an operation state of a yawing motor and the like of a hydraulic system of the wind generating set.
Finally, the control system can judge whether the yawing system works normally in the process of yawing the left and the right according to the operation data. Therefore, manual on-site investigation is not needed, the testing efficiency of the yaw system is improved, and the construction time of the wind generating set is shortened.
In this embodiment, as shown in fig. 2, preferably, the adjusting the wind turbine generator set to the maintenance mode includes:
step 2-1, controlling the wind generating set to return to a preset stop position according to a preset stop speed;
step 2-2, collecting variable pitch data of the wind generating set in real time;
and 2-3, judging whether the variable pitch data meet the condition parameters corresponding to the maintenance mode, and responding to the condition parameters met by the variable pitch data, and enabling the wind generating set to enter the maintenance mode.
Specifically, after the control system activates the yaw system self-checking state, the control system controls the wind turbine generator system to be in a preset stop speed, wherein the stop speed can be the normal stop speed of the wind turbine generator system, namely 5 degrees/s, and the blades of the wind turbine generator system are retracted to the preset stop position, and the stop position can be set to be 89 degrees. In the pitch control process, the control system can detect pitch control data of the wind generating set, such as blade positions, generator rotating speed, wind wheel rotating speed, unit state and the like, through the existing detection sensor.
The control system can judge whether the variable pitch data meet the condition parameters corresponding to the maintenance mode. For example, whether the blade stopping position reaches a preset stopping position or not and is maintained for more than 60 seconds, whether the rotating speed of the generator is lower than a preset rotating speed threshold or not can be set to 40rpm, whether the rotating speed of the wind wheel is lower than a wind wheel rotating speed threshold or not can be set to 0.25rpm, and whether the unit state is in a stopping completion state or not can be determined. If the collected variable pitch data meet the conditions, the wind generating set is indicated to enter a maintenance mode, otherwise, the wind generating set is not adjusted to the maintenance mode. Therefore, the wind generating set can be automatically operated in a maintenance mode without manual field operation, and the testing efficiency of the yaw system is further improved.
In this embodiment, preferably, the controlling the yaw system to yaw according to the preset detection parameter includes: and controlling a hydraulic system of the yaw system to reduce the system pressure to a preset pressure threshold value, and controlling the yaw system to yaw to a preset yaw position according to a preset yaw speed.
Specifically, after the wind turbine generator set is adjusted to the maintenance mode, the control system controls the hydraulic system of the yaw system to reduce the system pressure of the yaw system to a preset pressure threshold, which may be set to 25bar, and controls the hydraulic system to maintain the system pressure at the pressure threshold. The control system can detect the system pressure in real time through the arranged pressure sensor, and if the system pressure is lower than a pressure threshold value, the control system can control a hydraulic pump of the hydraulic system to boost pressure so as to maintain the system pressure at the pressure threshold value.
And then, the control system controls a yaw motor of the yaw system to drive the cabin to yaw leftwards from the initial position according to a preset yaw speed, when the cabin yaws to the preset yaw position, the control system controls the yaw motor to reduce the rotating speed, and after the rotating speed of the yaw motor is reduced to be below 10rpm, the hydraulic system is controlled to be pressurized, so that the yaw system is braked. When the system pressure of the hydraulic system is increased to a certain degree, the yaw motor starts to brake, the yaw system finishes yawing to the left, and returns to the starting position to yaw to the right in the same way. Therefore, the wind generating set can automatically carry out yaw control without manual field control, and the testing efficiency of a yaw system is further improved.
In this embodiment, as shown in fig. 3, preferably, the determining the operation state of the yaw system through the collected operation data includes:
step 5-1-1, judging whether the system pressure in the operation data is smaller than the minimum value of a preset pressure threshold range;
step 5-1-2, responding to the minimum value smaller than the pressure threshold range, increasing the system pressure of the hydraulic system to the pressure threshold range, and recording the pressurization times of the hydraulic system;
step 5-1-3, judging whether the supercharging frequency exceeds a preset frequency threshold value;
and 5-1-4, responding to the exceeding of the time threshold value, and enabling the yaw system to be abnormal.
Specifically, the control system may detect the system pressure in real time via a pressure sensor provided, and if the system pressure is lower than the minimum value of the pressure threshold range, the control system may control the hydraulic pump of the hydraulic system to boost pressure to maintain the system pressure at the pressure threshold. The pressure threshold range includes a pressure threshold range for non-yaw, set at 155-170bar, and a pressure threshold range for yaw, set at 20-25 bar.
When the control system detects that the system pressure is less than 155bar when not yawing, or less than 20bar when yawing, the hydraulic pump is controlled to boost to maintain the system pressure within a corresponding pressure threshold range. The control system may record the number of times the hydraulic pump is pressurized, and if the number of times the hydraulic pump is pressurized exceeds a threshold number of times, or if it is detected that the system pressure exceeds a corresponding pressure threshold range, it is indicated that the hydraulic system of the yaw system is abnormal. The control system of the wind generating set can automatically detect whether the hydraulic system of the yaw system is normal or not, manual field control is not needed, and the testing efficiency of the yaw system is further improved.
The second embodiment and the second embodiment are substantially the same as the first embodiment, and the main difference is that, as shown in fig. 4, the determining the operating state of the yaw system through the collected operating data further includes:
step 5-2-1, calculating the actual yaw speed of the yaw system through the operation data;
step 5-2-2, judging whether the speed change condition between the actual yaw speed and the rated yaw speed is within a preset speed change threshold range;
and 5-2-3, responding to the difference value not being within the speed threshold value range, and enabling the yaw system to be abnormal. Specifically, the method comprises the following steps:
first, the control system may detect the actual yaw position of the nacelle in real time via a position sensor, which may be a wind turbine generator set mounted yaw encoder or yaw potentiometer. Because the actual execution period of the control system is relatively fast, in order to ensure the accuracy of the calculation result, the sliding window filtering value of the yaw position in a time period can be selected as the actual yaw speed. Namely, the instantaneous yaw speed of the yaw system between two adjacent detection time nodes in a time period can be calculated through the actual yaw position detected by the detection time node, then a slide block with the width of 10s is designated for filtering, and finally the average value of the filtered data is used as the actual yaw speed of the yaw system.
Then, the control system determines whether the actual yaw speed is within a speed variation threshold range of a rated yaw speed, the rated yaw speed can be obtained by calculation of a rated rotating speed and a yaw driving speed increasing ratio of the yaw motor, and the speed variation threshold range can be set to +/-0.1 DEG/s. Namely, whether the actual yaw speed is within the range of +/-0.1 degree/s of the rated yaw speed or not is judged, if not, the operation of the yaw system is abnormal, otherwise, the operation of the yaw system is normal. The control system of the wind generating set can automatically detect whether the yaw speed of the yaw system is normal or not, manual on-site investigation is not needed, and the testing efficiency of the yaw system is further improved.
The third embodiment and the third embodiment are substantially the same as the first embodiment and the second embodiment, and the main difference is that, as shown in fig. 5, the determining the operating state of the yaw system through the collected operating data further includes:
5-3-1, calculating a theoretical yaw position of the yaw system through the operation data;
step 5-3-2, judging whether the position change condition between the actual yaw position and the theoretical yaw position in the operation data is within a preset position change threshold range;
and 5-3-3, responding to the situation that the position change situation is not within the range of the position change threshold value, and enabling the yaw system to be abnormal. Specifically, the method comprises the following steps:
the control system may calculate the theoretical yaw position based on the start position, yaw direction, operating time, and nominal yaw rate in the operating data. The starting position is the position of the engine room when the rotating speed of the yaw motor reaches the rated rotating speed. The control system can calculate the theoretical yaw angle of the cabin according to the running time and the rated yaw speed, and the theoretical yaw position of the yaw system can be determined by combining the starting position.
The control system can determine the actual yaw position of the yaw system by adopting the same method as the embodiment so as to determine the difference condition between the actual yaw position and the theoretical yaw position, and can judge whether the difference condition is within the preset position change threshold range, wherein the position change threshold range can be set to +/-2 degrees, namely whether the actual yaw position is +/-2 degrees different from the theoretical yaw position, if so, the yaw system operates normally, and otherwise, the yaw system is abnormal. The control system of the wind generating set can automatically detect whether the yaw position control of the yaw system is normal or not, manual on-site investigation is not needed, and the testing efficiency of the yaw system is further improved.
The fourth embodiment is substantially the same as the first, second and third embodiments, and the main difference is that, as shown in fig. 6, the method for determining the operating state of the yaw system by using the collected operating data further includes:
step 5-4-1, determining the variation trend of the wind direction of the engine room through the operation data;
step 5-4-2, judging whether the change trend is consistent with the yaw direction;
and 5-4-3, responding to the inconsistency of the change trend and the yaw direction, and enabling the yaw system to be abnormal. Specifically, the method comprises the following steps:
1) and at the moment of yaw starting, the control system records the yaw position angle and the wind direction angle of the engine room at the moment.
2) The yaw self-checking process continuously monitors the yaw position angle and the wind direction of the engine room:
if the unit is in the left yawing process, the yawing position should be gradually increased, and the wind direction of the engine room should be gradually reduced; if the unit is in the process of right yawing, the yawing position should be gradually reduced, and the wind direction of the engine room should be gradually increased;
if the variation trend of the wind direction of the cabin does not accord with the expectation, the deviation directions of the left and the right are wrong. If the trend of the wind direction of the cabin is correct, but the trend of the yaw position is not consistent with the expectation, the yaw position sensor is in error.
Different wind turbine generators, because of equipment installation use difference, the driftage position during driftage, wind direction variation trend probably exist differently.
The fifth embodiment is substantially the same as the first, second, third, and fourth embodiments, and the main difference is that, as shown in fig. 7, the determining the operating state of the yaw system by the collected operating data further includes:
step 5-5-1, determining the running state of the yaw motor through the running data;
5-5-2, judging whether the running state of the yaw motor is normal or not;
and 5-5-3, responding to the abnormal running state of the yaw motor, and enabling the yaw system to be abnormal. Specifically, the method comprises the following steps:
the control system can monitor whether the protection switch of the yaw motor is subjected to overload tripping or not and acquire the equipment state fed back by the yaw frequency converter. If the protection switch has overload trip or the fed back equipment state is abnormal, the operation state of the yaw motor is abnormal, and the yaw system is abnormal. Otherwise, the operation is normal. The control system of the wind generating set can automatically detect whether the yaw motor of the yaw system works normally or not, manual on-site investigation is not needed, and the testing efficiency of the yaw system is further improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A self-checking method for a yaw system of a wind generating set is characterized by comprising the following steps:
activating a self-checking state of the yaw system;
adjusting the wind generating set to a maintenance mode;
starting a self-checking program, and controlling a yaw system to yaw according to preset detection parameters;
acquiring operation data of the wind generating set in the yaw process in real time;
and determining the operating state of the yaw system through the collected operating data.
2. The wind generating set yaw system self-test method of claim 1, wherein activating the yaw system self-test state comprises:
the self-checking state of the yaw system is activated at regular time according to the running time of the wind generating set;
or activating the self-checking state of the yaw system according to the received self-checking instruction.
3. The wind generating set yaw system self-test method of claim 1, wherein the adjusting of the wind generating set to a maintenance mode comprises:
controlling the wind generating set to return to a preset stop position according to a preset stop speed;
acquiring variable pitch data of the wind generating set in real time;
and judging whether the variable pitch data meet the condition parameters corresponding to the maintenance mode, and responding to the condition parameters met by the variable pitch data, and enabling the wind generating set to enter the maintenance mode.
4. The wind generating set yaw system self-test method of claim 3, wherein the condition parameters include a stop position, a generator speed threshold, a rotor speed threshold, and a set status.
5. The self-checking method for the yaw system of the wind generating set according to claim 1, wherein the controlling the yaw system to yaw according to the preset detection parameters comprises: and controlling a hydraulic system of the yaw system to reduce the system pressure to a preset pressure threshold value, and controlling the yaw system to yaw to a preset yaw position according to a preset yaw speed.
6. The wind generating set yaw system self-inspection method of claim 1, wherein determining the operational state of the yaw system from the collected operational data comprises:
judging whether the system pressure in the operation data is smaller than the minimum value of a preset pressure threshold range;
in response to the pressure being smaller than the minimum value of the pressure threshold range, increasing the system pressure of the hydraulic system to be within the pressure threshold range, and recording the number of times of pressurization of the hydraulic system;
judging whether the supercharging frequency exceeds a preset frequency threshold value or not;
in response to exceeding the time threshold, the yaw system is abnormal.
7. The wind generating set yaw system self-checking method according to any one of claims 1 to 6, wherein determining the operational state of the yaw system from the collected operational data comprises:
calculating an actual yaw speed of the yaw system through the operation data;
judging whether the speed change condition between the actual yaw speed and the rated yaw speed is within a preset speed change threshold range or not;
in response to the difference not being within the speed threshold range, an anomaly in the yaw system occurs.
8. The wind generating set yaw system self-checking method according to any one of claims 1 to 7, wherein determining the operational state of the yaw system from the collected operational data comprises:
calculating a theoretical yaw position of the yaw system through the operation data;
judging whether the position change condition between the actual yaw position and the theoretical yaw position in the operation data is within a preset position change threshold range or not;
in response to the position change condition not being within the position change threshold range, an anomaly in the yaw system occurs.
9. The wind generating set yaw system self-checking method of any one of claims 1 to 8, wherein determining the operational state of the yaw system from the collected operational data comprises:
determining the variation trend of the wind direction of the engine room through the operation data;
judging whether the change trend is consistent with a yaw direction;
and responding to the inconsistency of the variation trend and the yaw direction, and enabling the yaw system to be abnormal.
10. The wind generating set yaw system self-checking method of any one of claims 1 to 9, wherein determining the operational state of the yaw system from the collected operational data comprises:
determining the operation state of the yaw motor through the operation data;
judging whether the running state of the yaw motor is normal or not;
and responding to the abnormal operation state of the yaw motor, and the abnormity of the yaw system occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110970283.2A CN113464383A (en) | 2021-08-23 | 2021-08-23 | Self-checking method for yaw system of wind generating set |
Applications Claiming Priority (1)
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