CN116163893A - Method for calibrating zero reference position of wind turbine generator vane - Google Patents
Method for calibrating zero reference position of wind turbine generator vane Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005070 sampling Methods 0.000 claims description 18
- 238000003491 array Methods 0.000 claims description 9
- 108700041286 delta Proteins 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
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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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/83—Testing, e.g. methods, components or tools therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/321—Wind directions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a method for calibrating a zero reference position of a wind turbine generator vane. Under the condition of the same wind speed, when the included angle between the cabin of the fan and the wind direction is different, the power absorbed by the fan is different, when the fan operates, the change of the included angle between the wind direction and the cabin has a certain rule, when the center line of the cabin is consistent with the zero reference position of the wind vane, the output power is the same as the output power when the included angle between the cabin and the wind direction is positive and negative, and the output power of the wind generating set is analyzed and processed by analyzing the output power of the fan under different wind speeds and different included angles between the cabin and the wind direction; the zero reference position of the wind vane can be calculated, so that software calibration is performed on the zero position of the wind vane, the power loss of the fan can be reduced, the running load of the fan is reduced, the service life of fan parts is prolonged, and the generating capacity loss is reduced.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a method for calibrating a zero reference position of a wind vane of a wind turbine generator.
Background
The main current machine types of the megawatt large-scale wind generating set are all horizontal shafts and 3-blade variable speed constant frequency type wind generating sets, as the wind power market competition is increased, the price of a fan is lower and lower, no matter based on the reality of reducing the cost of unit kilowatts or the requirement of reducing the installation position of the fan, the large-scale of the fan is unavoidable, the large-scale of the fan is necessary to bring technical problems and manufacturing problems, innovation of the fan technology is required, and consistency of the running state and theoretical calculation result of the fan is necessary to be ensured, otherwise, the generated energy cannot meet the design requirement, the load of the fan is increased, the fan part is damaged, and the reference position of all sensors of the wind generating set is required to be accurate, including a wind vane sensor. In the running process of the fan, yaw is an important factor affecting the output power and load of the fan, the wind is mainly measured by a wind vane sensor at present and used as an input signal of yaw control, when the fan normally runs, the zero position of the wind vane needs to be consistent with the central line of the cabin, under the condition, the output power of the fan is maximum, the yaw load is minimum, if the zero position of the wind vane deviates from the central line of the cabin, the output power of the fan can be reduced, the load of the fan can be increased, and the service life of fan components can be reduced.
At present, in order to ensure that the zero reference position of the wind vane is consistent with the central line of the engine room, a plurality of fan manufacturers and users adopt a plurality of methods in the selection and installation process of the wind vane sensor, for example, a laser centering instrument is adopted for the wind vane arranged at the tail part of the engine room during installation, so that the mechanical installation error of the wind vane is reduced; there are also manufacturers that adopt an acoustic wave wind measuring system and a laser radar wind measuring system to improve the detection precision, but these methods have certain defects, and the main problems are as follows: 1) The wind vane is generally arranged at the tail part of the wind generating set, and when the fan operates, the rotation of the impeller has an influence on a wind vane signal, so that the mechanical zero position of the installation position of the wind vane is not necessarily the actual zero position of the wind direction of the fan, and the installation mechanical zero position of the wind vane can shift along with the long-time operation of the fan, so that the error is increased; 2) For the scheme adopting the acoustic wave wind measuring system and the laser radar wind measuring system, one is high in price, and the other is high in requirement on the installation environment, so that the system cannot be suitable for all weather conditions.
Disclosure of Invention
The invention aims to provide a method for calibrating the zero reference position of the wind vane of the wind turbine generator, which has high accuracy, low cost and high reliability.
The invention aims at realizing the following technical scheme: a method for calibrating a zero reference position of a wind vane of a wind turbine generator comprises the following steps:
s1, acquiring the running state of a wind generating set;
s2, judging whether the wind generating set is in a power generation state, if so, turning to S3, otherwise turning to S1;
s3, acquiring operation parameters of the wind generating set including the wind speed, the included angle between the wind direction and the engine room and the output power of the fan, storing the operation parameters in an array form, and recording the number of sampling arrays;
s4, judging whether the number of the sampling arrays is larger than or equal to a sampling total number set value, if so, turning to S5, otherwise turning to S12; wherein the set value of the total sampling number is n;
s5, calculating the ratio of the sampling points of which the yaw angle is smaller than zero to the sampling points of which the wind angle is larger than or equal to zero, marking as delta 1, returning to the step S1 when delta 1 exceeds a set value, otherwise, turning to the step S6;
s6, obtaining a power parameter of which the corresponding yaw relative wind angle is greater than or equal to zero and a power parameter of which the yaw relative wind angle is less than or equal to zero, which are respectively marked as psi 1 and psi 2, by analyzing and calculating by utilizing the collected wind speed and power signals;
s7, calculating the absolute value of the difference between the yawing psi 1 and the yawing psi 2, dividing the absolute value by the theoretical power sum of the corresponding wind speed points, and recording the absolute value as delta 2;
s8, calculating an arcsine value of the power difference percentage to obtain an angle value, and recording the angle value as eta;
s9, judging the sizes of the psi 1 and the psi 2, if the power accumulated value which is larger than or equal to zero is larger than or equal to the power accumulated value which is smaller than zero, turning to S10, otherwise turning to S11;
s10, the zero reference position of the wind vane is eta/2;
s11, the zero reference position of the wind vane is-eta/2;
s12, judging whether the collected yaw wind angle of the cabin is larger than or equal to zero, if so, turning to S14, otherwise turning to S13;
s13, storing wind speed signals and power signals of which the yaw-to-wind included angle of the engine room is smaller than zero in an array, and recording the number m of samples;
s14, storing wind speed signals and power signals of which the yaw and wind angle of the engine room is greater than or equal to zero in an array, and recording the number l of samples.
In a further technical scheme, in the step S4, n is a positive integer greater than or equal to 86400.
Further, the range of the δ1 predetermined value in the step S5 is greater than 0.65 and less than 1.5.
The further technical scheme is that the analysis and calculation algorithm in the step S6 includes the following steps:
s15, calculating the data number of the acquired wind speed signals with the yaw wind angle of zero or more in different wind speed interval ranges, calculating an average value, storing the average value in an array, and marking the average value as alpha 3;
s16, calculating the data number of the power signals with the yaw wind angle of greater than or equal to zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, and recording the average value as beta 3;
s17, calculating the number of data of the acquired wind speed signals with yaw wind angles smaller than zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, and marking the average value as alpha 4;
s18, calculating the data number of the power signals with the yaw wind angle smaller than zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, and recording the average value as beta 4;
s19, calculating power values of power signals with yaw and wind angles larger than or equal to zero at different wind speed points by adopting a linear interpolation method, and storing the power points in an array, wherein the power points are recorded as beta 5;
s20, calculating power values of power signals with yaw and wind angles smaller than zero at different wind speed points by adopting a linear interpolation method, and storing the power points in an array, wherein the power points are recorded as beta 6;
s21, judging whether power signals with yaw wind angles larger than or equal to zero and power signals with yaw wind angles smaller than zero corresponding to all wind speed points are zero or not after linear interpolation, if not, turning to S22, otherwise, circularly accumulating the numbers of the arrays;
s22, calculating the accumulated value of each power point with the yaw wind included angle being greater than or equal to zero and the accumulated value of each power point with the yaw wind included angle being less than zero, and marking as psi 1 and psi 2 respectively.
According to a further technical scheme, in the steps S15, S16, S17 and S18, the wind speed range is more than or equal to 2.5m/S and less than or equal to 25m/S, the value of the wind speed interval is less than or equal to 0.5m/S, and the wind speed range and the interval value of each step are the same.
The further technical scheme is that the wind speed ranges in the steps S19 and S20 are more than or equal to 3m/S and less than or equal to 25m/S, the wind speed points are uniformly valued, the number of valued values is more than or equal to 45, and the wind speed ranges and the valued values of the wind speed points in each step are the same.
The beneficial effects of the invention are as follows: the inventor finds that when the zero position of the wind vane is different from the central line of the cabin, the output power of the fan under the same wind speed condition and different wind angles can be different, and if the difference between the zero position of the wind vane and the central line of the cabin is positive, the output power when the wind direction and the cabin angle are positive is larger than the output power when the wind direction and the cabin angle are negative; if the difference between the zero position of the wind vane and the center line of the engine room is negative, the output power of the wind direction and the engine room when the included angle of the wind direction and the engine room is negative is larger than the output power of the wind direction and the engine room when the included angle of the wind direction and the engine room is positive. According to the invention, through analysis and processing of the output power of the fan, the actual zero reference position of the wind vane can be calculated when the fan actually operates, the accuracy is high, and no additional hardware is required, so that the cost is low.
According to the invention, through analyzing and processing the output power of the wind generating set, the output power of the fan under different wind speeds and different angles between the engine room and the wind vane is analyzed; the zero reference position of the wind vane can be calculated, so that the power loss of the fan can be reduced, the running load of the fan can be reduced, and the generating capacity loss can be reduced.
Drawings
FIG. 1 is a flow chart of the present invention.
Fig. 2 is a flow chart of data processing of the signals collected in the present invention.
Detailed Description
The following detailed description of the invention, taken in conjunction with the accompanying drawings, is given by way of illustration and explanation only, and should not be taken as limiting the scope of the invention in any way. Furthermore, the features in the embodiments and in the different embodiments in this document can be combined accordingly by a person skilled in the art from the description of this document.
As shown in FIG. 1, the method for calibrating the zero reference position of the wind turbine vane comprises the following steps:
s1, acquiring the running state of a wind generating set;
s2, judging whether the wind generating set is in a power generation state, if yes, turning to S3, otherwise turning to S1;
s3, acquiring operation parameters of the wind generating set including the wind speed, the included angle between the wind direction and the engine room and the output power of the fan, storing the operation parameters in an array form, recording the number of sampling arrays, and then turning to S4;
s4, judging whether the number of the sampling arrays is larger than or equal to a sampling total number set value, if yes, turning to S5, otherwise turning to S12; wherein the set value of the total sampling number is n;
s5, calculating the ratio of the sampling points of which the included angle between the engine room and the wind direction is smaller than zero to the sampling points which are larger than or equal to zero, marking as delta 1, returning to the step S1 when delta 1 is smaller than or equal to 0.65 or larger than or equal to 1.5, and if not, turning to the step S6;
s6, acquiring power parameters of a corresponding yaw pair wind angle which is greater than or equal to zero and power parameters of less than or equal to zero and is used for yaw zero position calculation by utilizing the acquired wind speed and power signals through an analysis calculation algorithm, wherein the power parameters are respectively marked as psi 1 and psi 2;
s7, calculating the absolute value of the difference between the yawing psi 1 and the yawing psi 2, dividing the absolute value by the theoretical power sum of the wind speed points, marking the theoretical power sum as delta 2, and then turning to S8;
s8, calculating an arcsine value of the power difference percentage to obtain an angle value, marking the angle value as eta, and then turning to S9.
S9, judging the sizes of the psi 1 and the psi 2, if the power accumulated value which is larger than or equal to zero is larger than the power accumulated value which is smaller than zero, turning to S10, otherwise turning to S11;
s10, the zero reference position of the wind vane is eta/2;
s11, the zero reference position of the wind vane is-eta/2;
s12, judging whether the collected yaw wind angle of the cabin is larger than or equal to zero, if so, turning to S14, otherwise, turning to S13;
s13, storing wind speed signals and power signals of which the yaw-to-wind included angle of the engine room is smaller than zero in an array, and recording the number m of samples;
s14, storing wind speed signals and power signals with the yaw of the engine room with a wind angle of more than or equal to zero in an array, and recording the number l of samples;
as shown in fig. 2, the analytical calculation described in step S6 includes the steps of:
s15, calculating the number of data of the acquired wind speed signals with the yaw wind angle of more than or equal to zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, marking the average value as alpha 3, and then turning to S16, wherein the wind speed value range is more than or equal to 2.5m/S and less than or equal to 25m/S, and the wind speed interval value is less than or equal to 0.5m/S;
s16, calculating the number of data of the power signals with the yaw wind angle of more than or equal to zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, marking the average value as beta 3, then turning to S17, wherein the wind speed value range is more than or equal to 2.5m/S and less than or equal to 25m/S, the wind speed interval value is less than or equal to 0.5m/S, and the value interval is the same as that of the step S15;
s17, calculating the number of data of the acquired wind speed signals with the yaw wind angle smaller than zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, marking the average value as alpha 4, and then turning to S18, wherein the wind speed value range is more than or equal to 2.5m/S and less than or equal to 25m/S, the wind speed interval value is less than or equal to 0.5m/S, and the value interval is the same as that of the step S15;
s18, calculating the number of data of the power signals with the yaw vs. wind included angles smaller than zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, marking the average value as beta 4, then turning to S19, wherein the wind speed interval value is larger than or equal to 2.5m/S and smaller than or equal to 25m/S, and the wind speed interval value is smaller than or equal to 0.5m/S, and the value interval is the same as that of the step S15;
s19, calculating power values of power signals with yaw and wind angles larger than or equal to zero at different wind speed points by adopting a linear interpolation method, storing the power points in an array, marking the power points as beta 5, and then turning to S20, wherein the wind speed value ranges are larger than or equal to 3m/S and smaller than or equal to 25m/S, the wind speed points are uniformly valued, and the number of valued values is larger than or equal to 45;
s20, calculating power values of power signals with yaw included angles smaller than zero at different wind speed points by adopting a linear interpolation method, storing the power points in an array, marking the power points as beta 6, then turning to S21, wherein the wind speed value ranges are larger than or equal to 3m/S and smaller than or equal to 25m/S, the wind speed points are uniformly valued, the number of valued values is larger than or equal to 45, and the number of valued values is the same as that of the step S19;
s21, judging whether power signals with yaw wind angles larger than or equal to zero and power signals with yaw wind angles smaller than zero corresponding to all wind speed points are zero or not after linear interpolation, if not, turning to S22, otherwise, circularly accumulating the numbers of the arrays;
s22, calculating the accumulated value of each power point with the yaw wind included angle being greater than or equal to zero and the accumulated value of each power point with the yaw wind included angle being less than zero, and marking as psi 1 and psi 2 respectively.
In summary, the zero reference position of the wind vane is calculated through analysis of the wind angle, the wind speed and the output power of the yaw of the fan.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and adaptations of the invention, including variations of the parameter settings for different models, may be made without departing from the principles of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (6)
1. The method for calibrating the zero reference position of the wind vane of the wind turbine generator is characterized by comprising the following steps of:
s1, acquiring the running state of a wind generating set;
s2, judging whether the wind generating set is in a power generation state, if so, turning to S3, otherwise turning to S1;
s3, acquiring operation parameters of the wind generating set including the wind speed, the included angle between the wind direction and the engine room and the output power of the fan, storing the operation parameters in an array form, and recording the number of sampling arrays;
s4, judging whether the number of the sampling arrays is larger than or equal to a sampling total number set value, if so, turning to S5, otherwise turning to S12; wherein the set value of the total sampling number is n;
s5, calculating the ratio of the sampling points of which the yaw angle is smaller than zero to the sampling points of which the wind angle is larger than or equal to zero, marking as delta 1, returning to the step S1 when delta 1 exceeds a set value, otherwise, turning to the step S6;
s6, obtaining a power parameter of which the corresponding yaw relative wind angle is greater than or equal to zero and a power parameter of which the yaw relative wind angle is less than or equal to zero, which are respectively marked as psi 1 and psi 2, by analyzing and calculating by utilizing the collected wind speed and power signals;
s7, calculating the absolute value of the difference between the yawing psi 1 and the yawing psi 2, dividing the absolute value by the theoretical power sum of the corresponding wind speed points, and recording the absolute value as delta 2;
s8, calculating an arcsine value of the power difference percentage to obtain an angle value, and recording the angle value as eta;
s9, judging the sizes of the psi 1 and the psi 2, if the power accumulated value which is larger than or equal to zero is larger than or equal to the power accumulated value which is smaller than zero, turning to S10, otherwise turning to S11;
s10, the zero reference position of the wind vane is eta/2;
s11, the zero reference position of the wind vane is-eta/2;
s12, judging whether the collected yaw wind angle of the cabin is larger than or equal to zero, if so, turning to S14, otherwise turning to S13;
s13, storing wind speed signals and power signals of which the yaw-to-wind included angle of the engine room is smaller than zero in an array, and recording the number m of samples;
s14, storing wind speed signals and power signals of which the yaw and wind angle of the engine room is greater than or equal to zero in an array, and recording the number l of samples.
2. A method of calibrating a zero reference position of a wind turbine vane according to claim 1, wherein in step S4, n has a value of 86400 or greater.
3. The method according to claim 1, wherein the set value of δ1 in step S5 has an upper limit of 1.5 and a lower limit of 0.65.
4. Method for calibrating the zero reference position of a wind turbine vane according to claim 1, characterized in that said step S6 comprises in particular the steps of:
s15, calculating the data number of the acquired wind speed signals with the yaw wind angle of zero or more in different wind speed interval ranges, calculating an average value, storing the average value in an array, and marking the average value as alpha 3;
s16, calculating the data number of the power signals with the yaw wind angle of greater than or equal to zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, and recording the average value as beta 3;
s17, calculating the number of data of the acquired wind speed signals with yaw wind angles smaller than zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, and marking the average value as alpha 4;
s18, calculating the data number of the power signals with the yaw wind angle smaller than zero in different wind speed interval ranges, calculating an average value, storing the average value in an array, and recording the average value as beta 4;
s19, calculating power values of power signals with yaw and wind angles larger than or equal to zero at different wind speed points by adopting a linear interpolation method, and storing the power points in an array, wherein the power points are recorded as beta 5;
s20, calculating power values of power signals with yaw and wind angles smaller than zero at different wind speed points by adopting a linear interpolation method, and storing the power points in an array, wherein the power points are recorded as beta 6;
s21, judging whether power signals with yaw wind angles larger than or equal to zero and power signals with yaw wind angles smaller than zero corresponding to all wind speed points are zero or not after linear interpolation, if not, turning to S22, otherwise, circularly accumulating the numbers of the arrays;
s22, calculating the accumulated value of each power point with the yaw wind included angle being greater than or equal to zero and the accumulated value of each power point with the yaw wind included angle being less than zero, and marking as psi 1 and psi 2 respectively.
5. The method according to claim 4, wherein the wind speed ranges in steps S15, S16, S17, S18 are equal to or greater than 2.5m/S and equal to or less than 25m/S, the wind speed interval is equal to or less than 0.5m/S, and the wind speed ranges and intervals in each step are the same.
6. The method for calibrating a zero reference position of a wind vane of a wind turbine generator according to claim 4, wherein the wind speed ranges in the steps S19 and S20 are equal to or greater than 3m/S and equal to or less than 25m/S, the wind speed points are uniformly valued, the number of values is equal to or greater than 45, and the wind speed ranges and the wind speed points in the steps are the same.
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| CN202211637806.2A CN116163893A (en) | 2022-12-16 | 2022-12-16 | Method for calibrating zero reference position of wind turbine generator vane |
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| CN202211637806.2A CN116163893A (en) | 2022-12-16 | 2022-12-16 | Method for calibrating zero reference position of wind turbine generator vane |
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