WO2023130686A1 - 一种风力发电机组控制方法、装置及设备 - Google Patents

一种风力发电机组控制方法、装置及设备 Download PDF

Info

Publication number
WO2023130686A1
WO2023130686A1 PCT/CN2022/102746 CN2022102746W WO2023130686A1 WO 2023130686 A1 WO2023130686 A1 WO 2023130686A1 CN 2022102746 W CN2022102746 W CN 2022102746W WO 2023130686 A1 WO2023130686 A1 WO 2023130686A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
wind
speed
generating set
rated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/102746
Other languages
English (en)
French (fr)
Inventor
周经纬
翟恩地
田萌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Goldwind Science and Technology Co Ltd
Original Assignee
Jiangsu Goldwind Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Goldwind Science and Technology Co Ltd filed Critical Jiangsu Goldwind Science and Technology Co Ltd
Priority to KR1020247001526A priority Critical patent/KR20240022594A/ko
Priority to US18/575,913 priority patent/US12590567B2/en
Priority to EP22918142.5A priority patent/EP4357608A4/en
Priority to AU2022430604A priority patent/AU2022430604B2/en
Publication of WO2023130686A1 publication Critical patent/WO2023130686A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F03D7/0276—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
    • 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
    • F03D7/028—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
    • 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
    • F03D7/028—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
    • F03D7/0284—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power in relation to the state of the electric grid
    • 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
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • 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
    • F05B2270/10—Purpose of the control system
    • F05B2270/103—Purpose of the control system to affect the output of the engine
    • F05B2270/1031—Thrust
    • 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
    • F05B2270/10—Purpose of the control system
    • F05B2270/103—Purpose of the control system to affect the output of the engine
    • F05B2270/1032—Torque
    • 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
    • F05B2270/10—Purpose of the control system
    • F05B2270/103—Purpose of the control system to affect the output of the engine
    • F05B2270/1033—Power (if explicitly mentioned)
    • 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
    • F05B2270/32—Wind speeds
    • 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
    • F05B2270/32—Wind speeds
    • F05B2270/3201—"cut-off" or "shut-down" wind speed
    • 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
    • F05B2270/337—Electrical grid status parameters, e.g. voltage, frequency or power demand
    • 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

Definitions

  • the invention belongs to the technical field of wind power, and in particular relates to a control method, device and equipment for a wind power generating set.
  • the pitch angle adjustable fan is a fan that keeps the output power of the fan at the rated power by adjusting the pitch angle. When the output power of the fan is less than the rated power during operation, keep the pitch angle at zero. When the output power of the fan reaches the rated power during operation, the control system will adjust the pitch angle according to the change of the output power of the fan to keep the output power of the fan at the rated power. After the pitch angle adjustable fan reaches the rated power, the motor torque control makes the speed of the fan impeller constant.
  • the angle of attack of the fan blades will increase, the axial thrust load at the center of the fan hub will reach the maximum, the clearance of the tower will reach the minimum, and the unit will have the risk of sweeping the tower and blade stall.
  • the control method of pitch adjustment in advance can be adopted.
  • the advance pitch control method will cause the power curve to drop near the rated wind speed, resulting in loss of power generation.
  • the present application provides a control method, device and equipment for a wind power generator, which can not only reduce the axial thrust load at the hub center of the wind power generator, but also reduce the loss of power generation.
  • An embodiment of the present application provides a method for controlling a wind power generating set, the method comprising:
  • the mapping of the wind generating set includes the hub thrust mapping under super power generation, the fan power mapping under super power generation, and the hub thrust limit boundary;
  • the activation power for enabling the pitch control in advance is acquired
  • the embodiment of the present application also provides a control device for a wind power generating set, the device comprising:
  • the first acquisition unit is used to acquire the mapping of the wind power generating set;
  • the mapping of the wind generating set includes hub thrust mapping under super power generation, fan power mapping under super power generation, and hub thrust limit boundary;
  • the second acquisition unit is configured to acquire the activation power for enabling the advance pitch control according to the mapping of the wind power generating set;
  • the first control unit is used to control the torque increase of the motor so as to control the wind generator set to maintain at the
  • the first rated speed increases the power of the wind generator set, and controls the increase of the pitch angle based on a first calibration relationship between the power of the wind generator set and the pitch angle so that the hub thrust of the wind turbine according to said hub thrust limit boundary changes;
  • the second control unit is configured to control the increase of the pitch angle to control the speed of the wind power generating set to be maintained at the first rated speed until reaching the target wind speed when the power of the wind generating set increases to a super generating power .
  • the embodiment of the present application also provides a computer-readable storage medium storing a computer program, wherein, when the computer program is executed by a processor, the method for controlling a wind power generating set described in any one of the above is implemented.
  • the embodiment of the present application also provides a computing device, including:
  • At least one memory stores a computer program, and when the computer program is executed by the at least one processor, the wind power generating set control method described in any one of the above is realized.
  • Embodiments of the present application provide a method, device and equipment for controlling a wind power generating set, which acquire a map of a wind generating set.
  • the mapping includes the hub thrust mapping of the wind turbine under superpower, the fan power mapping and hub thrust limit boundary under superpower. According to the mapping of the wind power generating set, the starting power for starting the advance pitch control is obtained.
  • the motor torque is controlled to increase so that the wind generating set maintains the first rated rotating speed and the power of the wind generating set increases, and based on wind power
  • the first calibration relationship between the power of the unit and the pitch angle controls the increase of the pitch angle so that the hub thrust of the wind turbine varies according to the hub thrust limit boundary. In this way, the peaks in the hub thrust map can be eliminated by using the set hub thrust limit boundary.
  • the pitch angle is controlled to increase so as to control the speed of the wind generating set to maintain at the first rated speed until reaching the target wind speed.
  • the power of the wind generating set is maintained at the super generating power. In this way, since the excess power is higher than the rated power, by increasing the power of the wind turbine to the excess power and maintaining it for a period of time until the wind speed reaches the target wind speed, the power loss caused by the advance pitch control strategy under the rated power is compensated, reducing loss of power generation.
  • Fig. 1a is a schematic diagram of pitch angle comparison before and after advance pitch control provided by the embodiment of the present application;
  • Fig. 1b is a schematic diagram of comparison of wind turbine hub thrust before and after advance pitch control provided by the embodiment of the present application;
  • Fig. 1c is a schematic diagram of a comparison of the power of the fan generator set before and after the advance pitch control provided by the embodiment of the present application;
  • FIG. 2 is a schematic diagram of an exemplary application scenario provided by an embodiment of the present application.
  • Fig. 3 is a flowchart of a method for controlling a wind power generating set provided in an embodiment of the present application
  • FIG. 4 is a schematic diagram of a design parameter provided by an embodiment of the present application.
  • Fig. 5a is a schematic diagram of a wind power generating set power curve provided by an embodiment of the present application.
  • Fig. 5b is a schematic diagram of a fan hub thrust curve provided by the embodiment of the present application.
  • Fig. 5c is a schematic diagram of a pitch angle curve and a rotational speed curve provided by an embodiment of the present application.
  • Fig. 6a is a schematic diagram of a power change provided by the embodiment of the present application.
  • Fig. 6b is a schematic diagram of thrust variation of a wind turbine hub provided by the embodiment of the present application.
  • Fig. 6c is a schematic diagram of pitch angle change provided by the embodiment of the present application.
  • FIG. 7 is a flow chart of another method for controlling a wind power generating set provided in an embodiment of the present application.
  • Fig. 8a is a schematic diagram of another wind power generating set power curve provided by the embodiment of the present application.
  • Fig. 8b is a schematic diagram of another wind turbine hub thrust curve provided by the embodiment of the present application.
  • Fig. 8c is a schematic diagram of another pitch angle curve and rotational speed curve provided by the embodiment of the present application.
  • Fig. 9a is another schematic diagram of power variation provided by the embodiment of the present application.
  • Fig. 9b is a schematic diagram of another wind turbine hub thrust change provided by the embodiment of the present application.
  • Fig. 9c is a schematic diagram of another pitch angle change provided by the embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of another wind power generating set control device provided by the embodiment of the present application.
  • FIG. 11 is a schematic diagram of a computing device provided by an embodiment of the present application.
  • Figure 1a is a schematic diagram of a comparison of pitch angles before and after an advance pitch control provided by an embodiment of the present application.
  • Fig. 1b is a schematic diagram of comparison of wind turbine hub thrust before and after advance pitch control provided by an embodiment of the present application.
  • Fig. 1c is a schematic diagram of comparing the power of the fan generator set before and after the advance pitch control provided by the embodiment of the present application.
  • the wind power generating set in the present application refers to a pitch-angle-adjustable wind turbine, as shown by the solid lines in Figs. 1a and 1c that do not apply pitch control in advance.
  • the basic control strategy of the pitch angle adjustable fan is to keep the pitch angle unchanged at the zero position without making any adjustments to the pitch angle of the fan when the output power of the fan is less than the rated power during the operation of the fan, that is, The blades of the fan are kept in the open state.
  • the output power of the fan also reaches the rated power.
  • the control system participates in the closed-loop control.
  • the pitch angle may refer to the angle between the airfoil chord line at the top of the fan blade and the rotation plane.
  • the angle of attack may refer to the angle between the airflow velocity vector and the chord line of the airfoil.
  • the hub thrust can refer to the sum of the three blades of the fan absorbing the aerodynamic force and generating the force perpendicular to the plane of the impeller.
  • Tower clearance refers to the closest distance between the blade surface and the tower surface as the blade rotates past the tower. Usually when the power of the wind turbine reaches the rated power, the tower clearance is the smallest.
  • Blade stall can mean that the separation point of the airflow moves forward, the vortex area on the back of the blade expands from the tail end to the back of the blade, the detachment phenomenon is more serious, and even some flow passages are blocked.
  • the blade stall refers to the working section where the lift coefficient decreases as the blade angle of attack increases.
  • the phenomenon that the flow state of a considerable part of the airfoil changes from laminar flow to turbulent flow, so that the impeller cannot obtain enough lift from the air is called blade stall.
  • the advance pitch control method can be used to solve the problems of reduced service life of wind turbine components, fan blade sweeping and fan blade stall caused by excessive thrust of the wind turbine hub.
  • the advance pitch control method is to perform advance pitch control before the rated wind speed, that is, before the rated power is reached. Specifically, the power for enabling the advance pitch control, the target pitch angle, and the corresponding relationship between the power and the pitch angle are set first. It can be understood that the pitch angle corresponding to the power of the advanced pitch control is 0°, and the pitch angle corresponding to the rated power is the target pitch angle.
  • the value of the pitch angle (usually also referred to as "minimum pitch angle") is changed according to the corresponding relationship between the set power and the pitch angle.
  • minimum pitch angle the pitch angle
  • the power increase of the wind power generating set is realized.
  • the target pitch angle is reached, the power of the wind turbine reaches the rated power.
  • the pitch angle is adjusted through closed-loop control to maintain the rated power of the wind turbine.
  • the power for turning on the advance pitch control is 70%-90% of the rated power, and the target pitch angle is 1°-3°.
  • the shape of the pitch angle curve is changed by adopting advanced pitch control.
  • the excessive peak hub thrust generated by the excessively large blade angle of attack is avoided, and the hub thrust of the wind power generating set is reduced.
  • the power curve of the wind turbine drops near the rated wind speed by adopting advance pitch control, resulting in a certain loss of power generation. That is, it reduces the hub thrust of the wind turbine at the cost of sacrificing the performance of the unit, which will cause certain economic losses.
  • the annual power generation is the sum of the power generation generated by the wind turbine in one year, and the value of the annual power generation is the integral of power ⁇ Weibull distribution ⁇ power generation hours.
  • the Weibull distribution is a continuous probability distribution, which is usually used to describe the occurrence probability of wind speed in a certain area, and its probability density function is adjusted by the shape factor and scale factor.
  • the hub thrust of the wind turbine is reduced, there is still a hub thrust peak.
  • FIG. 2 is a schematic diagram of an exemplary application scenario provided by an embodiment of the present application.
  • the mapping of the wind turbine is obtained first.
  • the mapping includes hub thrust mapping under super power generation, fan power mapping under super power generation, and hub thrust limit boundary.
  • the activation power for enabling the advance pitch control is acquired.
  • the turn-on power is the power to turn on the advance pitch control, and the turn-on power is less than the rated power of the wind power generating set.
  • the super generating power is greater than the rated power of the wind turbine.
  • the wind generating set When the rotating speed of the wind generating set reaches the first rated rotating speed and the power of the wind generating set reaches the starting power, the wind generating set is controlled to maintain the first rated rotating speed and the power of the wind generating set is increased by controlling the motor torque to increase. Moreover, the pitch angle is controlled based on the first calibration relationship between the power of the wind power generating set and the pitch angle to increase the hub thrust of the wind turbine according to the hub thrust limit boundary.
  • the pitch angle is controlled to increase to control the speed of the wind generating set to maintain at the first rated speed until reaching the target wind speed.
  • the motor torque reaches the first torque, and the subsequent motor torque remains unchanged at the first torque. Since the speed of the wind power generator is maintained at the first rated speed and the torque of the motor is maintained at the first torque, the power of the wind power generator is maintained at the super-generating power.
  • FIG. 2 is only an example in which the embodiments of the present application can be implemented.
  • the scope of applicability of the embodiments of the present application is not limited by any aspect of this framework.
  • this figure is a flow chart of a method for controlling a wind power generating set provided in an embodiment of the present application.
  • the wind power generator set in the present application refers to a pitch angle adjustable wind turbine.
  • the method may include S301-S304:
  • mapping of the wind power generating set includes hub thrust mapping under super power generation, wind turbine power mapping under super power generation, and hub thrust limit boundary.
  • the wind power generating set in the present application refers to a pitch angle adjustable wind turbine.
  • the thrust of the fan hub of the pitch angle-adjustable fan can be reduced only by adopting the pitch control in advance.
  • there are still large peaks in the hub thrust mapping which reduces the power of the wind turbine.
  • a limit boundary of the hub thrust is set to reduce the wind turbine hub thrust. Thrust, and after reaching the rated power, the way of over-power is used to compensate the power loss of the wind turbine due to the advance pitch control.
  • mapping represents a mapping relationship between two variables. Maps can be expressed in various forms, such as curves, discrete points, and fitted line segments. In one or more embodiments, a curve is used as an example for description, but it is not limited thereto. In the case of mapping as a curve, the hub thrust is mapped to the wind turbine hub thrust curve.
  • the mapping of the wind turbine is obtained first, including the hub thrust mapping under super-power generation, the fan power mapping under super-power generation, and the hub thrust limit boundary.
  • the hub thrust limit boundary also belongs to a kind of mapping.
  • the super power Before obtaining the hub thrust map under super power and the fan power map under super power, first determine the super power.
  • wind turbines operate at rated power.
  • Power over-generation refers to the state that the wind turbine operates under the over-generation power beyond the rated power in a part of the wind speed range.
  • the over-generation power refers to the power when the power of the wind turbine exceeds the over-generation. That is, the super generating power is greater than the rated power of the wind power generating set.
  • increasing the power makes the wind turbine run at a higher maximum torque, and the increase in torque leads to an increase in the current in the motor, and the components of the converter will bear a larger current, which will also increase the cost of the cooling system .
  • the strength of the supporting structure of the motor must be strengthened to meet the torque when running at super power, so the setting of super power is limited by the cost of components such as the converter and generator of the wind turbine. Based on this, it can be determined whether the wind turbine has the ability to generate super power and the size of the super power according to the cost and design margin of components such as converters.
  • the set super generating power of the wind power generating set must meet the requirements of the generating set from super generating to super generating power.
  • the optional value of the over-generation power is 1.02-1.2 times the rated power of the wind power generating set, and the preferred value of the over-generation power is 1.04-1.07 times the rated power of the wind power generating set.
  • FIG. 4 is a schematic diagram of a design parameter provided by the embodiment of the present application, specifically a schematic diagram showing hub thrust mapping.
  • the abscissa of hub thrust mapping is wind speed, and the ordinate is wind turbine hub thrust.
  • the abscissa of the fan power map is the wind speed, and the ordinate is the power of the wind turbine. It can be understood that the difference between curve 2 in Fig. 4 and the basic control strategy in Fig. is the rated power of the wind turbine.
  • curve 1 in Fig. 4 is the hub thrust map obtained by the wind turbine operating under the rated power using the basic control strategy (in one or more embodiments, the hub thrust map may be the hub center axial thrust map ).
  • Curve 2 in Fig. 4 is the hub thrust map obtained when the wind turbine adopts the basic control strategy and operates under superpower.
  • Curve 3 in FIG. 4 is the hub thrust map obtained by the wind power generator using the wind power generator control method provided by the embodiment of the present application.
  • the peak thrust of the wind turbine hub will be generated when the rated power or superpower is reached. It can be seen that although the peak thrust of the wind turbine hub is reduced by using the advance pitch control, the peak still exists.
  • the embodiment of the present application sets the limit boundary of the hub thrust to limit the hub thrust of the fan, so that the excessive peak thrust of the fan hub can be cut off during the operation of the wind turbine, effectively Reduce the hub thrust of the wind turbine.
  • the ultimate load of the hub center of the wind turbine can be determined according to the strength that the tower, blade and other components can bear.
  • the limit boundary of the hub thrust in the embodiment of the present application may be set according to the limit load of the center of the hub of the wind power generating set.
  • the hub thrust limit boundary may be a straight line parallel to the horizontal axis, may be an oblique line with a certain slope, or may be a curve family fitted by a polynomial.
  • the thrust peak generated when the super-power is maintained is the peak caused by the super-power. Therefore, the goal is to cut off the peak thrust in curve 2 of Fig. 4 .
  • the thrust limiting boundary of the hub is a straight line parallel to the horizontal axis (such as curve 41 in FIG. 4 )
  • the intersection points of curve 2 and curve 41 are points A and C.
  • the peak thrust included in the curve segment of curve 2 between point A and point C is the peak thrust to be shaved off, and point A is the starting point for starting pitch advance control.
  • the limit boundary of the hub thrust is the line segment between point A and point C in curve 41 (also can be understood as curve 41)
  • the purpose of cutting off the peak in curve 2 and limiting the hub thrust of the fan can be achieved.
  • the optimal thrust value corresponding to the hub thrust limit boundary is 85% of the ultimate load of the hub center of the wind turbine generator set
  • the optional thrust range is 80%-95% of the ultimate hub center load of the wind turbine generator set. That is, it can be set that the thrust value corresponding to the line segment between point A and point C in the curve 41 (that is, the ordinate in FIG. 4 ) satisfies the preferred value of thrust or the optional range of thrust.
  • the thrust limiting boundary of the hub is an oblique line with a certain slope (such as the curve 42 in FIG. 4 )
  • the intersection points of the curve 2 and the curve 42 are points A and C'.
  • the curve segment of curve 2 between points A and C' includes the peak thrust that is to be trimmed. If the thrust of the fan hub is a line segment between point A and point C' in the curve 42, the purpose of cutting off the excessive peak in the curve 2 and limiting the thrust of the fan hub can also be achieved.
  • the angle between the hub thrust limit boundary (that is, the curve 42 in Fig. 4 ) and the horizontal axis is As an optional example, Optional values for The preferred value is 0°.
  • the hub thrust limit boundary is a straight line parallel to the transverse axis.
  • the thrust values corresponding to point A and point C' respectively can all satisfy the above-mentioned preferred value of thrust or optional range of thrust.
  • the specific hub thrust limit boundary is not limited.
  • the following embodiments of the present application will take the hub thrust limiting boundary parallel to the transverse axis as an example for illustration.
  • the designed hub thrust limit boundary also needs to meet a condition, please refer to the content described in S302 for details.
  • the power of the wind turbine will first increase with the increase of the wind speed.
  • an advance pitch control strategy is also used to perform advance pitch control. Then you can set the power to turn on the advance pitch control. Before the power of the wind generating set reaches the turn-on power, the motor torque is adjusted to increase the speed of the wind generating set and increase the power of the wind generating set. When the power of the wind turbine reaches the starting power, the advance pitch control is started.
  • the start-up power is set according to the map of the wind power generating set. In one or more embodiments, the turn-on power is less than the rated power of the wind turbine.
  • Figure 5a is a schematic diagram of a wind turbine power curve provided by an embodiment of the present application
  • Figure 5b is a schematic diagram of a wind turbine hub thrust curve provided by an embodiment of this application
  • Figure 5c is a schematic diagram of the power curve of a wind turbine hub provided by an embodiment of this application
  • the curve 3 in Fig. 5a, the curve 3 in Fig. 5b and the curve 3 in Fig. 5c are the curves realized under the control method of the wind turbine generator set provided by the embodiment of the present application. From another point of view, the curve 3 in Fig. 5a, the curve 3 in Fig. 5b and the curve 3 in Fig. 5c may be the curves used to guide and control the operation of the wind generator set in the embodiment of the present application. According to these curves, some control parameters for instructing and controlling the operation of the wind turbine generating set can be obtained, and these control parameters can be used to guide and control the operation of the wind turbine generating set.
  • the curve 3 in Fig. 5a, the curve 3 in Fig. 5b and the curve 3 in Fig. 5c can be obtained according to three sections: before point A, between point A and point C, and after point C.
  • the curve 3 in FIG. 5 a , the curve 3 in FIG. 5 b , and the curve segment before point A in the curve 3 in FIG. 5 c are thus obtained.
  • the power curve segment after point C of curve 3 in FIG. 5a is set as the power curve segment after point C of curve 2, thereby determining the power curve segment after point C of curve 3 in FIG. 5a.
  • the thrust curve segment after point C of curve 3 in Figure 5b and Figure 5c is obtained and pitch angle curve segments.
  • the curve 3 in Fig. 5a can be the fan power curve used to guide and control the operation of the fan generator set
  • Curve 3 (ie, the solid line) in 5c may be a pitch angle curve used to guide and control the operation of the fan generator set.
  • some control parameters can be obtained according to the curve 3 in Fig. 5a, the curve 3 in Fig. 5b and the curve 3 in Fig. 5c.
  • the turn-on power is one of the control parameters.
  • the embodiment of the present application provides a specific implementation manner of obtaining the activation power for enabling the advance pitch control according to the mapping of the wind power generating set, including:
  • A1 Obtain the first thrust intersection point, the second thrust intersection point, the first wind speed corresponding to the first thrust intersection point, and the second wind speed corresponding to the second thrust intersection point between the hub thrust mapping and the hub thrust limit boundary under superpower; the first The first wind speed corresponding to the thrust intersection point is smaller than the second wind speed corresponding to the second thrust intersection point.
  • the hub thrust mapping of the wind turbine generator under super power generation is the curve 2 in Fig. 5b
  • the hub thrust limit boundary is the curve 4 in Fig. 5b.
  • the first thrust intersection point and the second thrust intersection point are points A and C in Fig. 5b respectively.
  • the first wind speed corresponding to the first thrust intersection point is V1
  • the second wind speed corresponding to the second thrust intersection point is V2
  • V1 is smaller than V2. From the curve 3 in Fig. 5a, it can be seen that V2 is the wind speed when the power of the wind power generating set reaches the super generating power, that is, the rated wind speed.
  • A2 According to the first wind speed, determine the start-up power corresponding to the first wind speed in the wind turbine power map under super power generation, where the start-up power is the power for turning on the advance pitch control.
  • the start-up power corresponding to the first wind speed in the wind turbine power map (that is, curve 2 in FIG. 5a ) under superpower according to the first wind speed, that is, the power corresponding to point A in FIG. 5a .
  • point A is the starting point for starting pitch advance control.
  • the wind speed corresponding to point A is greater than the wind speed corresponding to the rated speed, so that when the power is turned on, the power of the wind power generating set can reach the first rated speed (that is, the normal rated speed of the wind power generating set ).
  • the set hub thrust limit boundary since point A is the intersection point of the hub thrust limit boundary set in S301 and the hub thrust map of the wind turbine under super power generation, the set hub thrust limit boundary also needs to meet a condition. The condition may be that the wind speed corresponding to the intersection of the hub thrust limit boundary and the hub thrust map of the wind turbine generator set under super power generation is greater than the wind speed corresponding to the rated speed.
  • the motor torque is adjusted to increase the speed of the wind generating set and increase the power of the wind generating set.
  • the motor torque is adjusted based on optimal gain control to increase the speed of the wind power generating set.
  • the turn-on power is determined.
  • the motor torque is adjusted to increase the rotational speed of the wind generating set and increase the power of the wind generating set.
  • the wind turbine operates at the optimal power coefficient state.
  • the power coefficient may be wind power generating set power/(0.5*swept area*air density*wind speed cubed).
  • the pitch angle of the wind turbine can be 0°.
  • Optimal gain control is a commonly used strategy for wind turbines (pitch angle regulated wind turbines) before reaching the first rated speed, and will not be described in detail here.
  • the fan power mapping, hub thrust mapping and pitch angle mapping at rated power can be obtained, and the fan power mapping, hub thrust mapping and pitch angle mapping at super power can also be obtained.
  • these maps do not meet the requirements, but on the basis of these maps, a map indicating the operation of the wind power generating set can be obtained, such as the curve 3 in each drawing. Then the mapping result after the wind turbine is running will be roughly similar to the mapping used to indicate wind turbine control. Therefore, the method for controlling a wind power generating set in the embodiment of the present application may also be regarded as a method for optimizing a power curve of a wind generating set.
  • S302 is based on the operation of the standard rated power of the unit, and the operation of the super power to obtain the hub thrust. Based on this, the thrust limit boundary of unit rated power and super power is formulated. According to the relationship between the boundary and the power and pitch angle, the turn-on power of the advance pitch control is obtained.
  • the wind generating set is maintained at the first rated rotating speed.
  • the wind power generating set is controlled to maintain the first rated speed by controlling the motor torque to increase. Due to the increase of the motor torque and the maintenance of the wind generator set at the first rated speed, the power of the wind generator set increases.
  • the torque increase of the motor is controlled through a closed-loop feedback control process to control the wind power generating set to maintain the first rated speed.
  • the advance pitch control is started.
  • a first calibration relationship between the power of the wind power generating set and the pitch angle is determined.
  • the pitch angle is controlled by the pitch motor to increase so that the hub thrust of the wind turbine changes according to the hub thrust limit boundary.
  • the embodiment of the present application also provides another method for controlling a wind power generating set.
  • the method further includes obtaining the first value between the power of the wind generating set and the pitch angle.
  • a calibration relationship Based on this, in a possible implementation, the embodiment of the present application also provides a specific implementation of obtaining the first calibration relationship between the power of the wind turbine and the pitch angle, for details, please refer to B1-B3 below .
  • the rated power of the wind generating set will be passed. At this time, continue to increase the power by controlling the torque of the motor, so that the power of the wind power generating set can be increased to the super-power.
  • the wind speed is the rated wind speed, that is, V2 in Fig. 5a, Fig. 5b or Fig. 5c.
  • the wind turbine is fully powered with super power.
  • the motor torque reaches the first torque.
  • the pitch angle is controlled to increase to control the speed of the wind generating set to maintain at the first rated speed until reaching the target wind speed, while the motor torque remains unchanged at the first torque. In this way, the power of the wind power generating set is maintained at super-power because the rotation speed of the wind generating set is maintained at the first rated speed and the motor torque is maintained at the first torque.
  • the process of controlling the rotation speed of the wind generating set to maintain the first rated rotation speed by controlling the increase of the pitch angle is a closed-loop feedback control process.
  • the target wind speed is the cut-out wind speed. That is, until the wind power generating set shuts down, the wind power generating set is operated under super power.
  • FIG. 6a is a schematic diagram of a power change provided by the embodiment of the present application
  • Fig. 6b is a schematic diagram of the thrust change of a fan hub provided by the embodiment of the present application
  • FIG. 6c is a schematic diagram of pitch angle changes provided by the embodiment of the present application.
  • Figure 6a corresponds to Figure 5a
  • Figure 6b corresponds to Figure 5b
  • Figure 6c corresponds to Figure 5c. It can be understood that some parameters for controlling the operation of the fan generator set can be obtained from Fig. 5a, Fig. 5b and Fig. 5c.
  • curve 1 shown in Fig. 5 and Fig. 6 is a curve obtained under rated power.
  • the embodiment of the present application provides a method for controlling a wind power generating set, which acquires a map of the wind generating set.
  • the activation power for enabling the advance pitch control is obtained.
  • the opening power is obtained according to the hub thrust mapping of the wind turbine under superpower, the fan power mapping under superpower and the limit boundary of hub thrust, and the superpower is greater than the rated power of the wind turbine, and the opening power is less than the wind force The rated power of the generator set.
  • the motor torque is controlled to increase to control the wind generating set to maintain the first rated rotating speed, and the power of the wind generating set is increased, and according to the wind power
  • the first calibration relationship between the power of the generator set and the pitch angle controls the increase of the pitch angle so that the hub thrust of the wind turbine varies according to the hub thrust limit boundary. In this way, the peaks in the hub thrust map can be eliminated by using the set hub thrust limit boundary.
  • the pitch angle is controlled to increase so as to control the speed of the wind generating set to maintain at the first rated speed until reaching the target wind speed.
  • the power of the wind generating set is maintained at the super generating power. In this way, since the super power is higher than the rated power, by increasing the power of the wind turbine to the super power and maintaining it for a period of time until the wind speed reaches the target wind speed, the power loss caused by the advance pitch control is compensated and the loss of power generation is reduced .
  • the embodiment of the present application provides a specific implementation of obtaining the first calibration relationship between the power of the wind turbine and the pitch angle in S303, including:
  • B1 Obtain the target interval between the first thrust intersection point and the second thrust intersection point in the hub thrust limit boundary; the abscissa of the target interval is the wind speed, and the ordinate is the hub thrust of the fan.
  • the target between the first thrust intersection point and the second thrust intersection point The interval is the target line segment between point A and point C on curve 4 in Fig. 5b.
  • B2 Obtain the optimal power mapping interval of the wind turbine corresponding to the target interval and the optimal pitch angle mapping interval corresponding to the target interval; the optimal power mapping interval of the wind turbine is used to represent the relationship between the wind speed and the power of the wind turbine; optimize The pitch angle mapping interval is used to characterize the relationship between wind speed and pitch angle.
  • the optimal power mapping interval of the wind turbine generator set corresponding to the target interval is It is the curve segment between point A and point C in curve 3 in Fig. 5a.
  • the optimal pitch angle mapping interval corresponding to the target interval is the curve segment between point A and point C in curve 3 in Fig. 5c.
  • the corresponding power and pitch angle can be obtained
  • the relationship is the first calibration relationship.
  • the first calibration relationship may be recorded in the form of a table.
  • the desired pitch angle can be obtained by means of table lookup, and the pitch angle can be adjusted by the pitch motor to achieve the desired pitch angle.
  • the power and pitch angle in the optimized power mapping interval and the optimized pitch angle mapping interval can be regarded as the control parameters obtained according to the curve 3 in Fig. 5a, the curve 3 in Fig. 5b and the curve 3 in Fig. 5c.
  • the over-power generation may cause the burden on the components of the wind turbine
  • the power of the wind turbine in order to improve the life of the components of the wind turbine, after a certain period of power over-generation, the power of the wind turbine can be reduced to the rated power, so that the wind can generate electricity
  • the unit is running at rated power.
  • the node that reduces the super power to the rated power is the target power change stage.
  • the wind speed segment corresponding to the superpower maintenance stage and the wind speed segment corresponding to the target power change stage can be determined in advance, specifically, including:
  • the corresponding wind speed when the power of the wind power generating set reaches the super generating power is the second wind speed, that is, V2.
  • an optional value range of L1 is L1 ⁇ [0.5m/s, 8m/s], and a preferred value is 1-3m/s. See L1 shown in Figure 4.
  • the corresponding wind speed is the fourth wind speed, namely V4.
  • an optional value range of L2 is L2 ⁇ [0.5m/s, 15m/s], and a preferred value of L2 is 1-3m/s. See L2 shown in Figure 4.
  • the front wind speed range and the rear wind speed range are control parameters preset in advance.
  • the front wind speed range is set to compensate for power loss due to early pitch control at rated power. The longer the distance of the front wind speed range, the more power generated by the over-power compensation.
  • the purpose of setting the wind speed range is to make the wind turbine smoothly transition from super power to rated power.
  • power compensation is also being carried out. In the case of high wind speed, the wind turbine is operated at a lower power within the rear wind speed range, which is conducive to the load reduction of blades and other components.
  • C2 Obtain the third wind speed according to the second wind speed corresponding to when the power of the wind turbine is increased to super-power, and the previous wind speed range corresponding to the super-power maintenance stage; at the third wind speed, the power of the wind turbine is super hair power.
  • the third wind speed can be obtained according to the second wind speed and the front wind speed range.
  • C3 Obtain the fourth wind speed according to the third wind speed and the width of the rear wind speed corresponding to the target power change stage, wherein at the fourth wind speed, the power of the wind power generating set is the rated power.
  • the power of the wind power generating set is adjusted through the relationship between the wind speed and the power of the wind power generating set. Therefore, the second calibration relationship between the power of the wind generating set and the wind speed can be obtained in advance, specifically:
  • a second calibration relationship between the power of the wind generating set and the wind speed is constructed.
  • the second calibration relationship between the power of the wind generating set and the wind speed may be a linear relationship or a nonlinear relationship. That is, the expression form of the second calibration relationship may be a slope with a certain slope, or a family of curves fitted by polynomials.
  • the second calibration relationship between the power of the wind generating set and the wind speed may be displayed in the form of a table, and the table records the corresponding relationship between the power of the wind generating set and the wind speed. It can be understood that, the embodiment of the present application does not limit the second calibration relationship between the power of the wind power generating set and the wind speed, which may be determined according to actual needs.
  • the target wind speed may be the third wind speed, that is, the operation of the wind power generating set is controlled with excess power until reaching the third wind speed.
  • the embodiment of the present application includes S701-S704 in addition to S301-S304:
  • the pitch angle is adjusted to control the speed of the wind generating set to maintain the first rated speed.
  • the process of adjusting the pitch angle to control the rotation speed of the wind generating set to maintain the first rated rotation speed is realized by closed-loop feedback control. That is, the closed-loop regulation system inputs the speed of the wind turbine, compares the input speed with the first rated speed, and controls the pitch motor to adjust the pitch angle according to the difference between the two to maintain the speed of the wind turbine at the first rated speed. Speed, eliminate speed deviation.
  • the target power corresponding to the real-time wind speed is obtained, and the torque of the motor is adjusted so that the wind generating set reaches the target power.
  • the power of the wind turbine in the target power change phase is decreasing.
  • the real-time wind speed is the current wind speed collected in real time after the wind speed reaches the third wind speed.
  • the wind speed in the second preset time can be monitored every first preset time, and the average wind speed in the second preset time can be calculated.
  • the first preset time is 1 minute
  • the second preset time is one of 30s-2 minutes, such as 50s.
  • adjust the power every 1 minute, and when it reaches 1 minute monitor the wind speed for 50s, obtain the average wind speed within 50s, and use the average wind speed as the adjusted wind speed.
  • the target power corresponding to the adjusted wind speed is obtained, and the motor torque is adjusted so that the wind generating set reaches the target power.
  • the second rated rotation speed is obtained.
  • the second rated rotating speed is lower than the first rated rotating speed, and the rated rotating speed of the wind generating set is reduced from the first rated rotating speed to the second rated rotating speed, which can increase the service life of the components of the wind generating set.
  • the ratio of the first rated speed to the second rated speed ⁇ [1, 1.1].
  • S703 Change the first rated speed to the second rated speed, adjust the motor torque to the second torque, and control the increase of the pitch angle to control the speed of the wind generating set to maintain the second rated speed; the power of the wind generating set is due to wind power generation The rotational speed of the set is maintained at the second rated rotational speed and the motor torque is maintained at the second torque to maintain the rated power.
  • the second torque may be the quotient of the rated power and the second rated rotational speed.
  • the pitch angle is controlled to increase to control the rotation speed of the wind generating set to maintain at the second rated rotation speed.
  • the power of the wind generating set is maintained at the rated power because the rotational speed of the wind generating set is maintained at the second rated rotational speed and the motor torque is maintained at the second torque.
  • the process of controlling the pitch angle to control the rotation speed of the wind generating set to maintain the second rated rotation speed is implemented by closed-loop feedback control.
  • the motor torque reaches the third torque. At this time, it is sufficient to control the increase of the pitch angle to control the rotation speed of the wind generating set to maintain at the first rated rotation speed.
  • the process of controlling the pitch angle to control the rotation speed of the wind generating set to maintain the first rated rotation speed can be realized by closed-loop feedback control. In this way, the power of the wind generating set is maintained at the rated power because the rotational speed of the wind generating set is maintained at the first rated rotational speed and the motor torque is maintained at the third torque.
  • S702-S703 and S704 are parallel schemes for controlling the operation of the wind generator set when the power of the wind generator set is reduced to the rated power and the wind speed reaches the fourth wind speed.
  • Figure 8a is a schematic diagram of another wind power generator power curve provided by the embodiment of the present application
  • Figure 8b is a schematic diagram of the power curve provided by the embodiment of the present application
  • Fig. 8c is a schematic diagram of another pitch angle curve and rotational speed curve provided by the embodiment of the present application.
  • the curve 3 in Fig. 8a, Fig. 8b and Fig. 8c can be used as a curve for guiding and controlling the operation of the wind power generating set.
  • the power curve, hub thrust mapping and pitch angle curve of the wind turbine are also similar to those shown in Fig. 8a, Fig. 8b and Fig. 8c.
  • the range between the wind speed corresponding to point C and the wind speed corresponding to point D is the front wind speed range
  • the range between the wind speed corresponding to point D and the wind speed corresponding to point E is the rear wind speed scope.
  • the power between point C and point D is the super power
  • between point D and point E is the power drop stage
  • the power corresponding to point E is the rated power
  • FIG. 8 c the figure shows the situation where point E (ie when reaching the fourth wind speed) reduces the first rated speed to the second rated speed.
  • the torque at this time may be the quotient of the rated power and the first rated speed.
  • the first rated speed is not reduced during the superpower maintenance stage, and the wind power generating set is always maintained at the first rated speed.
  • Zone I, Zone II, Zone III, Zone IV, and Zone V appearing in the drawings respectively correspond to the control phase after S302 and before S303 without reaching the turn-on power, and the control phase in S303 , the control phase in S304 when the target wind speed is the third wind speed, the control phase in S701, and the control phase in S702-S703.
  • zone V may also be the control stage in S704.
  • FIG. 9a is another schematic diagram of power variation provided by the embodiment of the present application
  • Fig. 9b is a schematic diagram of another kind of fan hub thrust variation provided by the embodiment of the present application
  • Fig. 9c is the schematic diagram of the embodiment of the present application Another schematic diagram of pitch angle variation provided by the example.
  • FIG. 9a, FIG. 9b, and FIG. 9c correspond to FIG. 8a, FIG. 8b, and FIG. 8c, respectively.
  • the curve 1 shown in Fig. 8 and Fig. 9 can be obtained under rated power.
  • the power compensation of the wind turbine depends on the positions of points C, D, and E in Figure 8a, that is, depends on the previous Total width of wind speed range and back wind speed range. If the distance on the horizontal axis between point D and point E is very small (that is, the range of rear wind speed is small), then point C and point D determine the range of wind speed for power overshoot.
  • the peak in the hub thrust map can be eliminated by using the set hub thrust limit boundary. Since there is an excess power wind speed segment and the excess power is higher than the rated power, by increasing the power of the wind turbine to the excess power and maintaining it for a period of time until the wind speed reaches the third wind speed, it can compensate for the advance pitch control at the rated power resulting power loss. In addition, when the third wind speed is reached, reducing the power of the wind generating set can increase the life of the components of the wind generating set, and at the fourth wind speed, reducing the speed of the wind generating set can also increase the life of the components of the wind generating set.
  • the embodiment of the present application also provides a control device for the wind generating set, which will be described below with reference to the accompanying drawings.
  • a control device for the wind generating set please refer to Embodiment of the above-mentioned method.
  • FIG. 10 is a schematic structural diagram of a control device for a wind power generating set provided by an embodiment of the present application.
  • the control device for the wind power generating set includes:
  • the first acquisition unit 1001 is configured to acquire the mapping of the wind power generating set;
  • the mapping of the wind generating set includes hub thrust mapping under super power generation, fan power mapping under super power generation, and hub thrust limit boundary;
  • the second acquiring unit 1002 is configured to acquire the activation power for enabling the advance pitch control according to the mapping of the wind power generating set;
  • the first control unit 1003 is configured to control the torque increase of the motor to control the wind generator set to maintain the specified speed when the speed of the wind generator set reaches the first rated speed and the power of the wind generator set reaches the opening power. the first rated speed and increase the power of the wind turbine, and control the increase of the pitch angle based on the first calibration relationship between the power of the wind generator and the pitch angle to increase the hub thrust of the wind turbine limit boundary changes according to said hub thrust;
  • the second control unit 1004 is configured to control the increase of the pitch angle to control the speed of the wind power generating set to maintain at the first rated speed until the target is reached when the power of the wind generating set increases to exceed the generating power wind speed.
  • the device further includes:
  • the adjustment unit is configured to obtain the starting power for enabling the advance pitch control according to the map of the wind generating set, and when the speed of the wind generating set reaches the first rated speed and the power of the wind generating set reaches the specified Before the starting power, when the power of the wind generating set is less than the starting power, adjust the motor torque to increase the speed of the wind generating set and increase the power of the wind generating set.
  • the second acquiring unit 1002 includes:
  • the first acquisition subunit is configured to acquire the first thrust intersection point, the second thrust intersection point, the first wind speed corresponding to the first thrust intersection point and the hub thrust limit boundary of the hub thrust map under super power generation and the hub thrust limit boundary, and The second wind speed corresponding to the second thrust intersection point; the first wind speed corresponding to the first thrust intersection point is smaller than the second wind speed corresponding to the second thrust intersection point;
  • the determination subunit is configured to determine the start-up power corresponding to the first wind speed in the wind turbine power map under super-power generation according to the first wind speed, wherein the start-up power is the power for turning on the advance pitch control.
  • the device further includes:
  • a third obtaining unit configured to obtain a first calibration relationship between the power of the wind power generating set and the pitch angle
  • the third acquisition unit includes:
  • the second acquisition subunit is used to acquire the target interval between the first thrust intersection point and the second thrust intersection point in the hub thrust limit boundary;
  • the abscissa of the target interval is wind speed, and the ordinate is the wind turbine hub thrust;
  • the third acquisition subunit is used to acquire the optimal power mapping interval of the wind power generating set corresponding to the target interval and the optimal pitch angle mapping interval corresponding to the target interval;
  • the optimal power mapping interval of the wind generating set is used to represent the wind speed and the relationship between the power of the wind generating set;
  • the optimized pitch angle mapping interval is used to characterize the relationship between wind speed and the pitch angle;
  • the fourth obtaining subunit is configured to obtain a first calibration relationship between the power of the wind power generating set and the pitch angle according to the optimized power mapping interval and the optimized pitch angle mapping interval.
  • the target wind speed is a cut-out wind speed.
  • the device further includes:
  • the fourth acquisition unit is used to acquire the front wind speed range corresponding to the super power maintenance phase and the rear wind speed range corresponding to the target power change phase;
  • the fifth obtaining unit is used to obtain the third wind speed according to the second wind speed corresponding to when the power of the wind power generating set is increased to super-power generation, and the previous wind speed range corresponding to the super-power maintenance stage; Under the three wind speeds, the power of the wind generating set is super power;
  • the sixth obtaining unit is configured to obtain a fourth wind speed according to the third wind speed and the subsequent wind speed range corresponding to the target power change stage, wherein at the fourth wind speed, the power of the wind power generating set is the rated power.
  • the device further includes:
  • a construction unit configured to construct the power of the wind power generating set and the wind speed according to the third wind speed, the excess power corresponding to the third wind speed, the fourth wind speed, and the rated power corresponding to the fourth wind speed.
  • the device when the target wind speed is the third wind speed, the device further includes:
  • An adjusting unit configured to adjust the pitch angle to control the speed of the wind generating set to maintain at the first rated speed when the wind speed reaches the third wind speed, and meanwhile, according to the power and wind speed of the wind generating set
  • the second calibration relationship among them obtains the target power corresponding to the real-time wind speed, and adjusts the motor torque so that the wind power generating set reaches the target power.
  • the device further includes:
  • a seventh acquiring unit configured to acquire a second rated rotational speed when the power of the wind generating set is reduced to the rated power and the wind speed reaches the fourth wind speed, and according to the rated power and the second The relationship of the rated speed determines the second torque;
  • a changing unit configured to change the first rated speed to the second rated speed, adjust the motor torque to the second torque, and control the increase of the pitch angle to control the speed of the wind generating set maintaining at the second rated speed; the power of the wind power generating set is maintained at the rated power due to the speed of the wind generating set being maintained at the second rated speed and the motor torque being maintained at the second torque.
  • the device further includes:
  • a third control unit configured to, when the power of the wind power generating set decreases to the rated power and the wind speed reaches the fourth wind speed, the torque of the motor reaches a third torque, and controls the pitch angle to increase to controlling the rotational speed of the wind generating set to be maintained at the first rated rotational speed, the power of the wind generating set is maintained at the first rated rotational speed and the motor torque at a third torque due to the rotational speed of the wind generating set being maintained at the first rated rotational speed while maintaining the rated power.
  • An embodiment of the present application also provides a computer-readable storage medium storing a computer program, wherein, when the computer program is executed by a processor, the method for controlling a wind power generating set as described in any one of the above-mentioned embodiments is implemented.
  • FIG. 11 shows a schematic diagram of a computing device according to an exemplary embodiment of the present disclosure.
  • a computing device includes a memory 111 and a processor 112.
  • a computer program is stored on the memory 111.
  • the computer program is executed by the processor 112, the computer program according to the present disclosure is implemented.
  • the mapping of the wind generating set includes the hub thrust mapping under super power generation, the fan power mapping under super power generation, and the hub thrust limit boundary;
  • the activation power for enabling the pitch control in advance is obtained
  • the pitch angle is controlled to increase so as to control the rotation speed of the wind generating set to maintain at the first rated rotation speed until reaching a target wind speed.
  • each embodiment in this specification is described in a progressive manner, each embodiment focuses on the differences from other embodiments, and the same and similar parts of each embodiment refer to each other That's it.
  • the description is relatively simple, and for the related part, please refer to the description of the system part.
  • the term "comprises”, “comprises” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or which are inherent in the process, method, article, or apparatus.
  • an element defined by the phrase “comprising a” does not preclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

一种风力发电机组控制方法、控制装置、计算机可读存储介质以及计算装置，优化风力发电机组功率曲线的方法，定义映射为机组在标准额定功率下运行的基础上，按照超发功率运行所获得的轮毂推力，并制定机组额定功率、超发功率的推力限制边界；根据该边界和功率、桨距角的关系，获取提前变桨控制的开启功率；当转速为第一额定转速且风力发电机组的功率达到开启功率时，控制电机扭矩增加以控制风力发电机组维持第一额定转速且使风力发电机组的功率增加，并且按照功率和桨距角的第一标定关系控制桨距角增加以使风机轮毂推力按照风机轮毂推力限制边界变化，能够降低风机轮毂推力且能够补偿在额定功率下提前变桨控制造成的功率损失。

Description

一种风力发电机组控制方法、装置及设备
本申请要求于2022年1月10日提交中国国家知识产权局、申请号为202210023305.9、发明名称为“一种风力发电机组控制方法、装置及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于风电技术领域，具体涉及一种风力发电机组控制方法、装置及设备。
背景技术
桨距角调节型风机是一种通过调整桨距角来使风机的输出功率保持在额定功率的风机。当风机在运行过程中的输出功率小于额定功率，使桨距角保持在零度位置不变。当风机在运行过程中的输出功率达到额定功率以后，控制系统会根据风机输出功率的变化调整桨距角的大小，使风机的输出功率保持在额定功率。在桨距角调节型风机到达额定功率后，电机扭矩控制使得风机叶轮的转速恒定。同时，随着风速的增大，风机叶片的攻角会加大，风机轮毂中心处的轴向推力载荷会达到最大值，塔架的净空达到最小值，机组存在扫塔和叶片失速的风险。
为了解决桨距角调节型风机运行在额定功率附近时存在的风机轮毂中心处的轴向推力载荷过大问题，可采用提前变桨的控制方法。但是，提前变桨控制方法会使功率曲线在额定风速处附近下降，造成发电量损失。
发明内容
为了解决上述技术问题，本申请提供了一种风力发电机组控制方法、装置及设备，不仅能够降低风力发电机轮毂中心处的轴向推力载荷，还能减少发电量损失。
为了实现上述目的，本申请实施例提供的技术方案如下：
本申请实施例提供了一种风力发电机组控制方法，所述方法包括：
获取风力发电机组的映射；所述风力发电机组的映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界；
根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率；
当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时，
控制电机扭矩增加以使所述风力发电机组维持在所述第一额定转速并使所述风力发电机组的功率增加，并且
基于所述风力发电机组的功率和桨距角之间的第一标定关系控制所述桨距角增加以使风机轮毂推力按照所述轮毂推力限制边界变化；
当所述风力发电机组的功率增加到超发功率时，
控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速直至达到目标风速。
本申请实施例还提供了一种风力发电机组控制装置，所述装置包括：
第一获取单元，用于获取风力发电机组的映射；所述风力发电机组的映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界；
第二获取单元，用于根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率；
第一控制单元，用于当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时，控制电机扭矩增加以控制所述风力发电机组维持在所述第一额定转速并使所述风力发电机组的功率增加，并且基于所述风力发电机组的功率和桨距角之间的第一标定关系控制所述桨距角增加以使所述风机轮毂推力按照所述轮毂推力限制边界变化；
第二控制单元，用于当所述风力发电机组的功率增加到超发功率时，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速直至达到目标风速。
本申请实施例还提供了一种存储有计算机程序的计算机可读存储介质，其中，当所述计算机程序被处理器执行时，实现上述任一项所述的风力发电机组控制方法。
本申请实施例还提供了一种计算装置，包括：
至少一个处理器；
至少一个存储器，存储有计算机程序，当所述计算机程序被所述至少一个处理器执行时，实现上述任一项所述的风力发电机组控制方法。
通过上述技术方案可知，本申请具有以下有益效果：
本申请实施例提供了一种风力发电机组控制方法、装置及设备，获取风力发电机组的映射。映射包括风力发电机组在超发功率下的轮毂推力映射、在超发功率下的风机功率映射和轮毂推力限制边界。根据风力发电机组的映射，获取开启提前变桨控制的开启功率。当风力发电机组的转速达到第一额定转速且风力发电机组的功率达到开启功率时，控制电机扭矩增加以使风力发电机组维持在第一额定转速并使风力发电机组的功率增加，并且基于风力发电机组的功率和桨距角之间的第一标定关系控制桨距角增加以使风机轮毂推力按照轮毂推力限制边界变化。如此，利用设置的轮毂推力限制边界，能够削除轮毂推力映射中的尖峰。进而，当风力发电机组的功率增加到超发功率时，控制桨距角增加以控制风力发电机组的转速维持在第一额定转速直至达到目标风速。由于风力发电机组的转速维持在第一额定转速以及在达到超发功率后电机扭矩维持在第一扭矩不变而使得风力发电机组的功率维持在超发功率。如此，由于超发功率高于额定功率，通过将风力发电机组的功率增加到超发功率并维持一段时间直至风速到达目标风速，补偿了在额定功率下提前变桨控制策略造成的功率损失，降低了发电量损失。
附图说明
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：
图1a为本申请实施例提供的一种提前变桨控制前后的桨距角对比示意图；
图1b为本申请实施例提供的一种提前变桨控制前后的风机轮毂推力对比示意图；
图1c为本申请实施例提供的一种提前变桨控制前后的风机发电机组功率的对比示意图；
图2为本申请实施例提供的一种示例性应用场景的示意图；
图3为本申请实施例提供的一种风力发电机组控制方法的流程图；
图4为本申请实施例提供的一种设计参数的示意图；
图5a为本申请实施例提供的一种风力发电机组功率曲线的示意图；
图5b为本申请实施例提供的一种风机轮毂推力曲线的示意图；
图5c为本申请实施例提供的一种桨距角曲线和转速曲线的示意图；
图6a为本申请实施例提供的一种功率变化示意图；
图6b为本申请实施例提供的一种风机轮毂推力变化示意图；
图6c为本申请实施例提供的一种桨距角变化示意图；
图7为本申请实施例提供的另一种风力发电机组控制方法的流程图；
图8a为本申请实施例提供的另一种风力发电机组功率曲线示意图；
图8b为本申请实施例提供的另一种风机轮毂推力曲线的示意图；
图8c为本申请实施例提供的另一种桨距角曲线和转速曲线的示意图；
图9a为本申请实施例提供的另一种功率变化示意图；
图9b为本申请实施例提供的另一种风机轮毂推力变化示意图；
图9c为本申请实施例提供的另一种桨距角变化示意图；
图10为本申请实施例提供的另一种风力发电机组控制装置的结构示意图；
图11为本申请实施例提供的计算装置的示意图。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本申请实施例作进一步详细的说明。
为了便于理解和解释本申请实施例提供的技术方案，先对本申请实施例中所涉及到的背景技术进行介绍。
参见图1a、1b和1c，图1a为本申请实施例提供的一种提前变桨控制前后 的桨距角对比示意图。图1b为本申请实施例提供的一种提前变桨控制前后的风机轮毂推力对比示意图。图1c为本申请实施例提供的一种提前变桨控制前后的风机发电机组功率的对比示意图。
在一个或多个实施例中，本申请的风力发电机组指的是桨距角调节型风机，如图1a和1c中未施加提前变桨控制的实线所示。通常，桨距角调节型风机的基础控制策略为在风机运行过程中，当风机的输出功率小于额定功率时，对风机的桨距角不作任何调节，保持桨距角在零度位置不变，即风机叶片维持在开桨状态。当风速到达额定风速，风机的输出功率也达到额定功率。在风机的输出功率达到额定功率以后，控制系统参与闭环控制，通过调整桨距角随风速非线性增大，使得风机叶片攻角随之改变，来维持转速/功率在额定功率不变。其中，桨距角可以是指风机叶片顶端翼型弦线与旋转平面的夹角。攻角可以是指气流速度矢量与翼型弦线的夹角。
但是，当桨距角调节型风机的功率达到额定功率时，电机扭矩控制使得叶轮的转速恒定，随着风速的增大，叶片的攻角加大，导致轮毂推力达到最大，可参见图1b中未施加提前变桨控制的实线中所示的尖峰推力。与此同时，会造成风机叶片和塔架的净空最小，风力发电机组有扫塔和叶片失速的风险。
其中，轮毂推力可以是指风机的三支叶片吸收气动力，产生垂直于叶轮平面的力的总和。塔架净空指的是当叶片转动经过塔架时，叶片表面和塔架表面之间最近的距离。通常风力发电机组的功率达到额定功率时，塔架净空最小。叶片失速可以是指气流的分离点向前移动，叶背的涡流区从尾端扩大到叶背部，脱离现象更为严重，甚至出现部分流道阻塞的情况。对于二维翼型来说，指升力系数随着叶片攻角增大，呈下降趋势的工作段为叶片失速。对于三维叶片来说，具有相当一部分的翼型流动状态从层流到湍流，从而叶轮无法从空气中获得足够升力的现象称为叶片失速。
基于此，目前可采用提前变桨控制方法来解决风机轮毂推力过大所导致的风力发电机组部件寿命下降、风机叶片扫塔和风机叶片失速等问题。提前变桨控制方法为在额定风速前，即没有达到额定功率前，就进行提前变桨控制。具体地，先设定开启提前变桨控制的功率、目标桨距角、功率和桨距角之间的对应关系。可以理解的是，开启提前变桨控制的功率对应的桨距角为0°，额定 功率对应的桨距角为目标桨距角。在到达开启变桨控制的功率时，便开始根据设定的功率和桨距角之间的对应关系来改变桨距角(通常也称为“最小桨距角”)的值。通过桨距角的调节，实现风力发电机组功率的增加。当达到目标桨距角时，风力发电机组的功率达到额定功率。此时再通过闭环控制调节桨距角，来维持风力发电机组的额定功率。作为一种可选示例，开启提前变桨控制的功率为额定功率的70％-90％，目标桨距角为1°-3°。
如图1a中的虚线所示，采用提前变桨控制使得桨距角曲线的形状发生了改变。同时，如图1b中的虚线所示，避免了叶片的攻角过大所产生的过大的尖峰轮毂推力，降低了风力发电机组的轮毂推力。但是，如图1c中的虚线和阴影部分所示，采用提前变桨控制使得风力机的功率曲线在额定风速附近下降，造成了一定的发电量损失。即，其是以牺牲机组性能为代价降低了风机轮毂推力，这会造成一定的经济损失。其中，年发电量为风力机组在一年内产生的发电量和，年发电量的值为功率×威布尔分布×发电小时数的积分。如图1c所示，威布尔分布为连续性的概率分布，通常用来描述某一地区的风速发生概率，其概率密度函数受到形状因子和尺度因子调节。另外，如图1b中的虚线所示，虽然降低了风力发电机组的轮毂推力，但是仍然存在轮毂推力尖峰。
基于此，本申请实施例提供了一种风力发电机组控制方法、装置、计算机可读存储介质和计算装置。为了便于理解本申请实施例提供的一种风力发电机组控制方法，下面结合图2对其示例性应用场景进行说明。图2为本申请实施例提供的一种示例性应用场景的示意图。
在实际应用中，先获取风力发电机组的映射。其中，映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界。再基于获取的风力发电机组的映射，获取开启提前变桨控制的开启功率。其中，开启功率为开启提前变桨控制的功率，开启功率小于风力发电机组的额定功率。超发功率大于风力发电机组的额定功率。
当风力发电机组的转速达到第一额定转速且风力发电机组的功率达到开启功率时，通过控制电机扭矩增加以控制风力发电机组维持在第一额定转速并使风力发电机组的功率增加。而且，基于风力发电机组的功率和桨距角之间的第一标定关系控制桨距角增加以使风机轮毂推力按照轮毂推力限制边界变化。
当风力发电机组的功率增加到超发功率时，控制桨距角增加以控制风力发电机组的转速维持在第一额定转速直至达到目标风速。在该阶段，当风力发电机组的功率增加到超发功率时，电机扭矩达到第一扭矩，且后续电机扭矩维持第一扭矩不变。由于风力发电机组的转速维持在第一额定转速以及电机扭矩维持在第一扭矩，使得风力发电机组的功率维持在超发功率。
本领域技术人员可以理解，图2所示的框架示意图仅是本申请的实施方式可以在其中得以实现的一个示例。本申请实施方式的适用范围不受到该框架任何方面的限制。
基于上述说明，下面将结合附图对本申请提供的风力发电机组控制方法进行详细说明。
参见图3，该图为本申请实施例提供的一种风力发电机组控制方法的流程图。在一个或多个实施例中，本申请中的风力发电机组指的是桨距角调节型风机。如图3所示，该方法可以包括S301-S304：
S301：获取风力发电机组的映射；风力发电机组的映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界。
在一个或多个实施例中，本申请的风力发电机组指的是桨距角调节型风机。目前，采用提前变桨控制才能降低桨距角调节型风机的风机轮毂推力。但是轮毂推力映射仍存在较大的尖峰，且使得风力发电机组的功率减少。为了进一步降低风机轮毂推力且补偿在额定功率下采用提前变桨控制所损失的风力发电机组功率，本申请实施例中在采用提前变桨控制的基础上，设置了轮毂推力限制边界来降低风机轮毂推力，且在到达额定功率后，采用功率超发的方式来补偿风力发电机组由于提前变桨控制所损失的功率。
可以理解的是，映射表征两个变量之间的映射关系。映射的表现形式多种多样，例如，曲线、离散点、拟合的线段。在一个或多个实施例中，以曲线为例进行描述，但不限于此。在映射为曲线的情况下，轮毂推力映射为风机轮毂推力曲线。
基于此，先获取风力发电机组的映射，包括超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界。其中，轮毂推力限制边界也属于一种映射。
在获取超发功率下的轮毂推力映射、在超发功率下的风机功率映射之前，先确定超发功率。一般情况下，风力发电机组会在额定功率下运行。功率超发指的是风力发电机在部分风速段，超出额定功率而在超发功率下运行的状态。超发功率指的是风力发电机功率超发时的功率。即，超发功率大于风力发电机组的额定功率。一般情况下，增大功率使得风力发电机组运行在更高的最大扭矩，扭矩的增加导致电机中的电流增大，变流器的元器件会承受更大的电流，还会增加散热系统的成本。此外，电机也要加强支撑结构件的强度以满足运行在超发功率时的扭矩，故超发功率的设置受到风力发电机组的变流器和发电机等部件成本的限制。基于此，可以根据变流器等元器件的成本和设计裕量来确定风力发电机组是否有超发至超发功率的能力以及确定超发功率的大小。在本申请实施例中，设定的风力发电机组超发功率要满足机组超发至超发功率的要求。作为一种可选示例，超发功率的可选值为风力发电机组额定功率的1.02-1.2倍，超发功率的优选值为风力发电机组额定功率的1.04-1.07倍。
由此，确定超发功率后，按照桨距角调节型风机的基础控制策略，根据叶素动量理论即可获取风力发电机组(即桨距角调节型风机)在超发功率下的轮毂推力映射(其可为图4中的曲线2)以及在超发功率下的风机功率映射。其中，图4为本申请实施例提供的一种设计参数的示意图，具体为展示轮毂推力映射的示意图。轮毂推力映射的横坐标为风速，纵坐标为风机轮毂推力。风机功率映射的横坐标为风速，纵坐标为风力发电机组的功率。可以理解的是，图4中的曲线2和图1a、1c中的基础控制策略的区别为图4中的曲线2最后维持稳定的功率是超发功率，而图1a、1c中维持稳定的功率是风力发电机组的额定功率。
另外，参见图4，图4中曲线1为风力发电机组采用基础控制策略在额定功率下运行得到的轮毂推力映射(在一个或多个实施例中，轮毂推力映射可以是轮毂中心轴向推力映射)。图4中曲线2为风力发电机组采用基础控制策略在超发功率下运行得到的轮毂推力映射。图4中曲线3为风力发电机组采用本申请实施例提供的风力发电机组控制方法所得到的轮毂推力映射。在实际应用中，无论是曲线1中在额定功率下运行风力发电机组，还是曲线2中在超发功率下运行风力发电机组，在到达额定功率或超发功率时，都会产生风机轮毂尖峰推力。可见，采用提前变桨控制，虽然降低了风机轮毂尖峰推力，但是仍存在尖峰。
基于此，在提前变桨控制的基础上，本申请实施例设置了轮毂推力限制边界，来限制风机轮毂推力，使得在控制风力发电机组运行过程中能够削去过大的风机轮毂尖峰推力，有效降低风力发电机组的轮毂推力。风力发电机组轮毂中心的极限载荷可以是根据塔架、叶片等部件所能承受的强度决定的。在本申请实施例中，可以根据风力发电机组轮毂中心的极限载荷设定本申请实施例中的轮毂推力限制边界。
在一些可能的实现方式中，轮毂推力限制边界可以为平行于横轴的直线，可以是带有一定斜率的斜线，或者是通过多项式拟合的曲线族。在本申请实施例中，由于到达额定功率后还要使功率超发来到达超发功率，则维持超发功率运行时，产生的推力尖峰为超发功率带来的尖峰。因此，以削去图4曲线2中的尖峰推力为目标。如图4所示，当轮毂推力限制边界为平行于横轴的直线(如图4中的曲线41)时，曲线2和曲线41的交点为A点和C点。A点和C点之间曲线2的曲线段包括的尖峰推力为要削去的尖峰推力，A点为开启提前变桨控制的起始点。若轮毂推力限制边界为曲线41中A点和C点之间的线段(也可以理解为曲线41)，则可以达到削去曲线2中的尖峰，并限制风机轮毂推力的目的。此时，作为一种可选示例，轮毂推力限制边界对应的推力优选值为风力发电机组轮毂中心极限载荷的85％，推力可选范围为风力发电机组轮毂中心极限载荷的80％-95％。即可以设定曲线41中A点和C点之间的线段对应的推力值(即图4中纵坐标)满足推力优选值或推力可选范围。
如图4所示，当轮毂推力限制边界为带有一定斜率的斜线时(如图4中的曲线42)时，曲线2和曲线42的交点为A点和C’点。A点和C’点之间曲线2的曲线段包括的尖峰推力为要削去的尖峰推力。若风机轮毂推力为曲线42中A点和C’点之间的线段，也能达到削去曲线2中的过大的尖峰，并限制风机轮毂推力的目的。此时，轮毂推力限制边界(即图4中的曲线42)与横轴的夹角为图4中的
Figure PCTCN2022102746-appb-000001
作为一种可选示例，
Figure PCTCN2022102746-appb-000002
的可选值为
Figure PCTCN2022102746-appb-000003
优选值为0°。可以理解的是，当
Figure PCTCN2022102746-appb-000004
为0°时，轮毂推力限制边界是平行于横轴的直线的情况。在一个或多个实施例中，在
Figure PCTCN2022102746-appb-000005
非0°时，可以使A点和C’点分别对应的推力值(即图4中纵坐标)均满足上述的推力优选值或推力可选范围。在根据风力发电机组轮毂中心的极限载荷设置轮毂推力限制边界时，只要合理即可，不限定具体的 轮毂推力限制边界。但是为了叙述方便，后续本申请实施例会以平行于横轴的轮毂推力限制边界为例进行说明。
另外，在一个或多个实施例中，设计的轮毂推力限制边界还需要满足一个条件，详情请见S302中叙述的内容。
S302：根据风力发电机组的映射，获取开启提前变桨控制的开启功率。
在实际应用中，风力发电机组启动运行后，风力发电机组的功率会先随着风速的增加而增加。本申请实施例中，还采用提前变桨控制策略进行提前变桨控制。则可以设定开启提前变桨控制的开启功率。在风力发电机组的功率到达开启功率之前，调节电机扭矩以使风力发电机组的转速增加，并使风力发电机组的功率增加。当风力发电机组的功率到达开启功率后，开启提前变桨控制。在本申请实施例中，根据风力发电机组的映射，设置开启功率。在一个或多个实施例中，开启功率小于风力发电机组的额定功率。
为了便于理解确定开启功率的过程，下面先对确定开启功率的原理进行说明。
以图5a、5b和5c为例进行说明。参见图5a、5b和5c，图5a为本申请实施例提供的一种风力发电机组功率曲线的示意图，图5b为本申请实施例提供的一种风机轮毂推力曲线的示意图，图5c为本申请实施例提供的一种桨距角曲线和转速曲线的示意图。
在实际应用中，在S301中确定超发功率和轮毂推力限制边界后，根据叶素动量理论计算出在超发功率下的风机功率映射(如图5a中的曲线2)、在超发功率下的轮毂推力映射(如图5b中的曲线2)以及在超发功率下的桨距角曲线(如图5c中的曲线2)。确定轮毂推力限制边界(如图5b中的曲线4)后，获取图5b中曲线2和曲线4的第一推力交点为A点，第二推力交点为C点。根据以上获得的曲线，来确定本申请实施例中用于指导控制风机发电机组运行的图5a中的曲线3、图5b中的曲线3和图c中的曲线3。在一个或多个实施例中，图5a中的曲线3、图5b中的曲线3和图5c中的曲线3为在本申请实施例提供的风机发电机组控制方法下所实现的曲线。从另一个角度来看，图5a中的曲线3、图5b中的曲线3和图5c中的曲线3可以为本申请实施例中用于指导控制风机发电机 组运行的曲线。根据这些曲线可以获取一些用于指导控制风机发电机组运行的控制参数，并通过这些控制参数来指导控制风机发电机组运行。
具体实施时，可以按照A点之前、A点和C点之间、C点之后等三段来获取图5a中的曲线3、图5b中的曲线3和图5c中的曲线3。首先，设置图5a中的曲线3、图5b中的曲线3和图5c中的曲线3中A点之前的曲线段分别和图5a中的曲线2、图5b中的曲线2和图5b中的曲线2中A点之前的曲线段相同。由此获得了图5a中的曲线3、图5b中的曲线3和图5c中的曲线3中A点之前的曲线段。
其次，设置图5b曲线3中A和C之间的推力曲线段为曲线4中A点和C点之间的线段，由此确定了图5b中曲线3中A和C之间的推力曲线段。并基于图5b中曲线3中A和C之间的推力曲线段(即曲线4中A点和C点之间的线段)和叶素动量理论，获得图5a和图5c中曲线3的A点和C点之间的功率曲线段和桨距角曲线段。可以理解的是，图5a中的C点对应的功率已经达到了超发功率。
最后，设置图5a中曲线3的C点之后的功率曲线段为曲线2的C点之后的功率曲线段，由此确定了图5a中曲线3的C点之后的功率曲线段。并基于图5a中曲线3的C点之后的功率曲线段(即曲线2的C点之后的功率曲线)和叶素动量理论，获得图5b和图5c中曲线3的C点之后的推力曲线段和桨距角曲线段。由此，获取了本申请实施例可以用于指导控制风机发电机组运行的图5a中的曲线3、图5b中的曲线3和图5c中的曲线3。
进而，图5a中的曲线3可以为用于指导控制风机发电机组运行的风机功率曲线，图5b中的曲线3(即实线)可以为用于指导控制风机发电机组运行的轮毂推力映射，图5c中的曲线3(即实线)可以为用于指导控制风机发电机组运行的桨距角曲线。在进行风力发电机组控制之前，可以先根据图5a中的曲线3、图5b中的曲线3和图5c中的曲线3获取一些控制参数，获得的控制参数用于实际中风力发电机组的控制。而开启功率便为其中一个控制参数。
基于上述说明，在一种可能的实现方式中，本申请实施例提供了一种根据风力发电机组的映射，获取开启提前变桨控制的开启功率的具体实施方式，包括：
A1：获取在超发功率下的轮毂推力映射与轮毂推力限制边界的第一推力交点、第二推力交点、第一推力交点对应的第一风速以及第二推力交点对应的第二风速；第一推力交点对应的第一风速小于第二推力交点对应的第二风速。
其中，风力发电机组在超发功率下的轮毂推力映射即为图5b中的曲线2，轮毂推力限制边界即为图5b中的曲线4。第一推力交点、第二推力交点分别为图5b中的A点和C点。第一推力交点对应的第一风速为V1，第二推力交点对应的第二风速为V2，V1小于V2。由图5a中的曲线3可知，V2为风力发电机组的功率到达超发功率时的风速，即额定风速。
A2：根据第一风速确定在超发功率下的风机功率映射中第一风速对应的开启功率，其中开启功率为开启提前变桨控制的功率。
确定第一风速后，根据第一风速确定在超发功率下的风机功率映射(即图5a中的曲线2)中第一风速对应的开启功率，即图5a中A点对应的功率。
由于在图5a中的曲线2和图5a中的曲线3中，在A点(包括A点)之前的曲线是相同的，则在实际应用中，图5a中曲线3中第一风速对应的功率也为开启功率。
另外，A点为开启提前变桨控制的起始点。在一个或多个实施例中，A点对应的风速比额定转速对应的风速大，以使在到达开启功率时，风力发电机组的功率能够到达第一额定转速(即风力发电机组通常的额定转速)。在一个或多个实施例中，由于A点为S301中设置的轮毂推力限制边界与风力发电机组在超发功率下的轮毂推力映射的交点，则设置的轮毂推力限制边界还需要满足一个条件。该条件可以为轮毂推力限制边界与风力发电机组在超发功率下的轮毂推力映射的交点对应的风速比额定转速对应的风速大。
在一个或多个实施例中，在S302之后，S303之前，当风力发电机组的功率小于开启功率时，调节电机扭矩以使风力发电机组的转速增加，并使风力发电机组的功率增加。
作为一种可选示例，基于最优增益控制来调节电机扭矩来使风力发电机组的转速增加。具体地，确定开启功率。风力发电机组启动时，风力发电机组的功率小于开启功率。此时，基于最优增益控制，调节电机扭矩以使风力发电机组的转速增加，并使风力发电机组的功率增加。在最优增益控制下，风力发电 机组运行在最优功率系数状态。其中，功率系数可以为风力发电机组功率/(0.5×扫风面积×空气密度×风速的三次方)。在最优增益控制下，风力发电机组的桨距角可以为0°。最优增益控制为风力发电机组(桨距角调节型风机)在到达第一额定转速前常用的策略，在此不再详述。
基于上述内容可知，一般情况下能够获取在额定功率下的风机功率映射、轮毂推力映射以及桨距角映射，还能获取在超发功率下的风机功率映射、轮毂推力映射以及桨距角映射。而这些映射均为不满足要求的映射，但是可以在这些映射的基础上，获取指示风力发电机组运行的映射，如各个附图中的曲线3。则风力发电机组运行后的映射结果会和用于指示风机控制的映射大致相似。由此，也可将本申请实施例的风力发电机组控制方法看作是优化风力发电机组功率曲线的方法。其中，S302即为在机组标准额定功率下运行的基础上，按照超发功率运行获得轮毂推力。基于此，制定机组额定功率、超发功率的推力限制边界。根据该边界和功率、桨距角的关系，获取提前变桨控制的开启功率。
S303：当风力发电机组的转速达到第一额定转速且风力发电机组的功率达到开启功率时，控制电机扭矩增加以控制风力发电机组维持在第一额定转速并使风力发电机组的功率增加，并且基于风力发电机组的功率和桨距角之间的第一标定关系控制桨距角增加以使风机轮毂推力按照轮毂推力限制边界变化。
当风力发电机组的转速达到第一额定转速且风力发电机组的功率达到开启功率时，为了使得转速不能过快，维持风力发电机组在第一额定转速。具体地，通过控制电机扭矩增加以控制风力发电机组维持在第一额定转速。由于电机扭矩增加，且风力发电机组维持在第一额定转速，使得风力发电机组的功率增加。在一个或多个实施例中，通过闭环反馈控制过程来控制电机扭矩增加以控制风力发电机组维持在第一额定转速。
同时，当风力发电机组的转速达到第一额定转速且风力发电机组的功率达到开启功率时，开启提前变桨控制。此时，确定风力发电机组的功率和桨距角之间的第一标定关系。根据当前风力发电机组的功率以及第一标定关系，获取对应的桨距角，进而，通过变桨电机控制桨距角增加以使风机轮毂推力按照轮毂推力限制边界变化。由此实现了精确控制轮毂中心载荷在一定的范围内，降低了机组的极限载荷，降低了部件的设计成本，提高了使用寿命。
在一种可能的实现方式中，本申请实施例还提供了另一种风力发电机组控制方法，除了S301-S304之外，该方法还包括获取风力发电机组的功率和桨距角之间的第一标定关系。基于此，在一种可能的实现方式中，本申请实施例还提供了一种获取风力发电机组的功率和桨距角之间的第一标定关系的具体实施方式，具体请见下文B1-B3。
S304：当风力发电机组的功率增加到超发功率时，控制桨距角增加以控制风力发电机组的转速维持在第一额定转速直至达到目标风速。
可以理解的是，在风力发电机组的功率增加到超发功率之前，会经过风力发电机组的额定功率。此时继续通过控制电机扭矩来增加功率，使风力发电机组的功率增加到超发功率。
当风力发电机组的功率增加到超发功率时，风速为额定风速，即图5a、图5b或图5c中的V2。此时，风力发电机组以超发功率满发。同时，电机扭矩达到第一扭矩。风力发电机组的功率增加到超发功率后，控制桨距角增加以控制风力发电机组的转速维持在第一额定转速直至达到目标风速，同时电机扭矩保持第一扭矩不变。如此，风力发电机组的功率由于风力发电机组的转速维持在第一额定转速以及电机扭矩维持在第一扭矩而维持在超发功率。在一个或多个实施例中，通过控制桨距角增加以控制风力发电机组的转速维持在第一额定转速的过程是闭环反馈控制过程。
作为一种可选示例，目标风速为切出风速。即，直至风力发电机组停机前，均在超发功率下运行风力发电机组。
在目标风速为切出风速下，参见图6a、图6b和图6c，图6a为本申请实施例提供的一种功率变化示意图，图6b为本申请实施例提供的一种风机轮毂推力变化示意图，图6c为本申请实施例提供的一种桨距角变化示意图。图6a和图5a相对应，图6b和图5b相对应，图6c和图5c相对应。可以理解的是，从图5a、图5b和图5c中可以得到控制风机发电机组运行的一些参数。同时，利用这些参数控制风力发电机组运行后，得到的风力发电机组的功率、轮毂推力映射和桨距角曲线和图5a、图5b、图5c中所示曲线大致相同。以图6a、图6b和图6c作为控制风机发电机组的结果图为例进行说明。
由图6a可知，在额定功率下进行提前变桨控制会导致功率损失。而在本申请实施中，在到达风力发电机组的额定功率后，会对机组进行一定的功率超发，以此来补偿损失的发电量，提高风力发电机组创造的经济效益。由图6b可知，在本申请实施中，由于设置了轮毂推力限制边界，能够在提前变桨控制阶段(即S303)通过桨距角的控制将风机轮毂推力限制在一定范围内，削减推力载荷尖峰，使得风机运行过程中不会引起过大推力载荷。另外，虽然如图6b所示，在功率超发控制下，后期的风机轮毂推力载荷较原控制算法有所增加，但仍控制风机轮毂推力在轮毂推力限制边界之下。由图6c可知，桨距角随风速变化的曲线如曲线3所示，其中，三角形面积为提前变桨控制区域，在此之后的长条状面积为风力发电机组的功率超发控制区域。
可以理解的是，图5和图6中出现的曲线1均是在额定功率下得到的曲线。
基于S301-S304的内容可知，本申请实施例提供了一种风力发电机组控制方法，获取风力发电机组的映射。根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率。其中，开启功率根据风力发电机组在超发功率下的轮毂推力映射、在超发功率下的风机功率映射和轮毂推力限制边界获得，且超发功率大于风力发电机组的额定功率，开启功率小于风力发电机组的额定功率。当风力发电机组的转速达到第一额定转速且风力发电机组的功率达到开启功率时，控制电机扭矩增加以控制风力发电机组维持在第一额定转速，并使风力发电机组的功率增加，并且按照风力发电机组的功率和桨距角之间的第一标定关系控制桨距角增加以使风机轮毂推力按照轮毂推力限制边界变化。如此，利用设置的轮毂推力限制边界，能够削除轮毂推力映射中的尖峰。进而，当风力发电机组的功率增加到超发功率时，控制桨距角增加以控制风力发电机组的转速维持在第一额定转速直至达到目标风速。由于风力发电机组的转速维持在第一额定转速以及在达到超发功率后电机扭矩维持在第一扭矩不变而使得风力发电机组的功率维持在超发功率。如此，由于超发功率高于额定功率，通过将风力发电机组的功率增加到超发功率并维持一段时间直至风速到达目标风速，补偿了由于提前变桨控制造成的功率损失，降低了发电量损失。
在一种可能的实现方式中，本申请实施例提供了一种S303中获取风力发电机组的功率和桨距角之间的第一标定关系的具体实施方式，包括：
B1：获取轮毂推力限制边界中第一推力交点和第二推力交点之间的目标区间；目标区间的横坐标为风速，纵坐标为风机轮毂推力。
例如，根据叶素动量理论获取指导控制风机发电机组运行的图5a中的曲线3、图5b中的曲线3和图5c中的曲线3之后，第一推力交点和第二推力交点之间的目标区间即为图5b中曲线4上A点和C点之间的目标线段。
B2：获取目标区间对应的风力发电机组的优化功率映射区间和目标区间对应的优化桨距角映射区间；风力发电机组优化功率映射区间用于表征风速和风力发电机组的功率之间的关系；优化桨距角映射区间用于表征风速和桨距角之间的关系。
例如，根据叶素动量理论获取指导控制风机发电机组运行的图5a中的曲线3、图5b中的曲线3和图5c中的曲线3之后，目标区间对应的风力发电机组的优化功率映射区间即为图5a中曲线3中A点和C点之间的曲线段。目标区间对应的优化桨距角映射区间即为图5c中曲线3中A点和C点之间的曲线段。
B3：根据优化功率映射区间和优化桨距角映射区间，获取风力发电机组的功率和桨距角之间的第一标定关系。
获取优化功率映射区间和优化桨距角映射区间后，根据优化功率映射区间中风速和功率的关系，以及优化桨距角映射区间中风速和桨距角的关系，能够对应获取功率和桨距角的关系，该关系即为第一标定关系。作为一种可选示例，第一标定关系可用表格的形式记录。在实际应用中，获取到风力发电机组的功率后，可通过查表的方式，获取期望的桨距角，并通过变桨电机来调节桨距角达到期望的桨距角。
优化功率映射区间和优化桨距角映射区间中的功率和桨距角可看作是根据图5a中的曲线3、图5b中的曲线3和图5c中的曲线3得到的控制参数。
另外，由于功率超发可能会引起风力发电机组部件的负担，为了提高风力发电机组部件的寿命，在进行一定时间的功率超发后，可以将风力发电机组的功率降低到额定功率，使风力发电机组在额定功率运行。将超发功率降低到额定功率的节点为目标功率变化阶段。
基于此，可以预先确定超发功率维持阶段对应的风速段以及目标功率变化阶段对应的风速段，具体地，包括：
C1：获取超发功率维持阶段对应的前风速范围和目标功率变化阶段对应的后风速范围。
风力发电机组的功率到达超发功率时对应的风速为第二风速，即V2。超发功率维持阶段对应的前风速范围L1为第二风速V2和第三风速V3之间的宽度，即L1＝V3-V2。在第三风速时，开始降低风力发电机组的功率。作为一种可选示例，L1的可选值范围为L1∈[0.5m/s,8m/s]，优选值为1-3m/s。可参见图4所示L1。
风力发电机组的功率降低到额定功率时，对应的风速为第四风速，即V4。目标功率变化阶段对应的后风速范围L2为第三风速V3和第四风速V4之间的宽度，即L2＝V4-V3。作为一种可选示例，L2的可选值范围L2∈[0.5m/s,15m/s]，L2的优选值为1-3m/s。可参见图4所示L2。
在一个或多个实施例中，前风速范围和后风速范围为提前预设的控制参数。前风速范围内，机组功率维持在超发功率。设置前风速范围是为了补偿由于在额定功率下提前变桨控制导致的功率损失。前风速范围的距离越长，超发功率补偿的发电量越多。设置后风速范围是为了让风力发电机组由超发功率平滑过渡到额定功率。同时，后风速范围内，也在进行功率补偿。在风速较大的情况下，在后风速范围内使风力机在较低的功率下运行，有利于叶片等部件的降载。
C2：根据风力发电机组的功率增加到超发功率时对应的第二风速，以及超发功率维持阶段对应的前风速范围，获取第三风速；在第三风速下，风力发电机组的功率为超发功率。
获取前风速范围、后风速范围以及第二风速之后，便可根据第二风速和前风速范围，获取第三风速。
C3：根据第三风速以及目标功率变化阶段对应的后风速宽度，获取第四风速，其中在第四风速时，风力发电机组的功率为额定功率。
在获取第三风速之后，基于第三风速和后风速范围，获取第四风速。
在一个或多个实施例中，在目标功率变化阶段，通过风速和风力发电机组的功率之间的关系，来调节风力发电机组的功率。因此，可以预先获得风力发电机组的功率和风速之间的第二标定关系，具体为：
根据第三风速、第三风速对应的超发功率、第四风速以及第四风速对应的额定功率，构建风力发电机组的功率和风速之间的第二标定关系。
具体实施时，风力发电机组的功率和风速之间的第二标定关系可为线性关系或非线性关系。即，第二标定关系的表现形式可以是带有一定斜率的斜线，或者是通过多项式拟合的曲线族。作为一种可选示例，风力发电机组的功率和风速之间的第二标定关系可通过表格的形式展示，表格中记录风力发电机组的功率和风速的对应关系。可以理解的是，本申请实施例不限定风力发电机组的功率和风速之间的第二标定关系，可根据实际需要进行确定。
基于上述内容可知，在一个或多个实施例中，目标风速可为第三风速，即以超发功率控制风力发电机组运行直至到达第三风速。当目标风速为第三风速时，本申请实施例除S301-S304之外，还包括S701-S704：
S701：当风速到达第三风速时，调整桨距角以控制风力发电机组的转速维持在第一额定转速，同时根据风力发电机组的功率和风速之间的第二标定关系获取实时风速对应的目标功率，调整电机扭矩以使风力发电机组到达目标功率。
当风速到达第三风速时，调整桨距角以控制风力发电机组的转速维持在第一额定转速。在一个或多个实施例中，调整桨距角以控制风力发电机组的转速维持在第一额定转速的过程通过闭环反馈控制来实现。即，闭环调节系统输入风力发电机组的转速，将输入的转速和第一额定转速相对比，根据两者的差值控制变桨电机调节桨距角来使风力发电机组的转速维持在第一额定转速，消除转速偏差。
同时，根据风力发电机组的功率和风速之间的第二标定关系，获取实时风速对应的目标功率，调整电机扭矩以使风力发电机组到达目标功率。目标功率变化阶段的风力发电机组的功率在降低。其中，实时风速为风速到达第三风速后，实时采集的当前风速。
为了使获取的实时风速更加准确且降低调节功率的次数，可每隔第一预设时间监测第二预设时间内的风速，并计算第二预设时间内的风速平均值，将第二预设时间内的风度作为调节风速。例如，第一预设时间为1min，第二预设时间为30s-2min中的一个时间，如50s。则每隔1min调节一次功率，在到达1min 时，监测50s的风速，获取50s内的平均风速，将该平均风速作为调节风速。再根据风力发电机组的功率和风速之间的第二标定关系获取调节风速对应的目标功率，调整电机扭矩以使风力发电机组到达目标功率。
当风力发电机组的功率降低到额定功率且风速达到第四风速时，确定是否调整风力发电机组的转速。若调整风力发电机组的转速，可降低风力发电机组的转速，以此来提高风力发电机组部件的寿命。基于此，分为S702-S703和S704两种情况。
S702：当风力发电机组的功率降低到额定功率且风速达到第四风速时，获取第二额定转速，以及根据额定功率和第二额定转速的关系(例如，商)确定第二扭矩。
若确定调整所述风力发电机的转速，则获取第二额定转速。第二额定转速小于第一额定转速，将风力发电机组的额定转速从第一额定转速降低到第二额定转速，可调高风力发电机组部件的寿命。
作为一种可选示例，第一额定转速与第二额定转速的比值∈[1,1.1]。
S703：将第一额定转速更改为第二额定转速，将电机扭矩调整为第二扭矩，控制桨距角增加以控制风力发电机组的转速维持在第二额定转速；风力发电机组的功率由于风力发电机组的转速维持在第二额定转速以及电机扭矩维持在第二扭矩而维持在额定功率。
确定调整风力发电机组的转速且获取调整后的第二额定转速后，当风力发电机组的功率降低到额定功率且风速达到第四风速时，将第一额定转速更改为第二额定转速，并将电机扭矩调整为第二扭矩并维持第二扭矩。其中，第二扭矩可以为额定功率和第二额定转速的商。
同时，控制桨距角增加以控制风力发电机组的转速维持在第二额定转速。如此，风力发电机组的功率由于风力发电机组的转速维持在第二额定转速以及电机扭矩维持在第二扭矩而维持在额定功率。
在一个或多个实施例中，控制桨距角以控制风力发电机组的转速维持在第二额定转速的过程通过闭环反馈控制来实现。
可以理解的是，通过将功率从超发功率降低为额定功率，通过将第一额定转速降低到第二额定转速，能够有效降低机组在高风速下的疲劳载荷，保护变流器，提高部件可靠性。
S704：当风力发电机组的功率降低到额定功率且风速达到第四风速时，电机扭矩达到第三扭矩，控制桨距角增加以控制风力发电机组的转速维持在第一额定转速，风力发电机组的功率由于风力发电机组的转速维持在第一额定转速以及电机扭矩维持在第三扭矩而维持在额定功率。
若确定不调整风力发电机组的转速，当风力发电机组的功率降低到额定功率且风速达到第四风速时，电机扭矩达到第三扭矩。此时，控制桨距角增加以控制风力发电机组的转速维持在第一额定转速即可。在一个或多个实施例中，控制桨距角以控制风力发电机组的转速维持在第一额定转速的过程可以通过闭环反馈控制来实现。如此，风力发电机组的功率由于风力发电机组的转速维持在第一额定转速以及电机扭矩维持在第三扭矩而维持在额定功率。
可以理解的是，S702-S703与S704为当风力发电机组的功率降低到额定功率且风速达到第四风速时的控制风力发电机组运行的并列方案。
基于上述内容，在目标风速为第三风速下，参见图8a、图8b和图8c，图8a为本申请实施例提供的另一种风力发电机组功率曲线示意图，图8b为本申请实施例提供的另一种风机轮毂推力曲线的示意图，图8c为本申请实施例提供的另一种桨距角曲线和转速曲线的示意图。图8a、图8b和图8c中的曲线3可作为指导控制风力发电机组运行的曲线。而实际中，风力发电机组的功率曲线、轮毂推力映射和桨距角曲线也和图8a、图8b和图8c类似。
如图8a、图8b和图8c中的曲线3所示，C点对应的风速和D点对应的风速之间为前风速范围，D点对应的风速和E点对应的风速之间为后风速范围。在图8a的曲线3中，C点和D点之间的功率为超发功率，D点和E点之间为功率下降阶段，E点对应的功率为额定功率，E点之后风力发电机组以额定功率运行直至切出风速。如图8c所示，在该图中展示了E点(即到达第四风速时)降低第一额定转速到第二额定转速的情况。另外，在实际应用中，如S704所述，还可以选择到达第四风速时，仍然维持第一额定转速，此时的扭矩可以为额定功率和第一额定转速的商。在一个或多个实施例中，在图5c中， 在超发功率维持阶段没有降低第一额定转速，风力发电机组为一直维持在第一额定转速的状态。
在一个或多个实施例中，附图中出现的Ⅰ区、Ⅱ区、Ⅲ区、Ⅳ区、Ⅴ区分别对应了S302之后且S303之前的未到达开启功率的控制阶段、S303中的控制阶段、S304中目标风速为第三风速情况下的控制阶段、S701中的控制阶段、S702-S703中的控制阶段。其中，Ⅴ区还可以为S704中的控制阶段。
参见图9a、图9b和图9c，图9a为本申请实施例提供的另一种功率变化示意图，图9b为本申请实施例提供的另一种风机轮毂推力变化示意图，图9c为本申请实施例提供的另一种桨距角变化示意图。图9a、图9b、图9c分别和图8a、图8b、图8c相对应。
由图9a可知，在额定功率下进行提前变桨控制会导致功率损失。而在本申请实施中，在到达风力发电机组的额定功率后，会对机组进行一定的功率超发，以此来补偿损失的发电量，提高风力发电机组创造的经济效益。由图9b可知，在本申请实施中，由于设置了轮毂推力限制边界，能够在提前变桨控制阶段(见S303)通过桨距角的控制能够将风机轮毂推力限制在一定范围内，削减推力载荷尖峰，使得风机运行过程中不会引起过大推力载荷。另外，虽然在功率超发控制下，风机轮毂中心后期的轴向推力载荷较原控制算法有所增加，但仍控制风机轮毂推力在轮毂推力限制边界之下。由图9c可知，桨距角随风速变化的曲线如曲线3所示。其中，三角形面积为提前变桨控制区域，在此之后的长条状面积为机组的功率超发控制区域。
其中，图8和图9中出现的曲线1均可以是在额定功率下得到的曲线。
在目标风速为第三风速的情况下，即会控制超发功率降低到额定功率的情况下，风力发电机组的功率补偿的大小取决于图8a中点C、D、E位置，即取决于前风速范围和后风速范围的总宽度。如果D点和E点之间的横轴距离很小(即后风速范围小)，那么C点和D点决定了功率超发的风速范围。
基于S701-S704内容可知，利用设置的轮毂推力限制边界，能够削除轮毂推力映射中的尖峰。由于存在超发功率风速段且超发功率高于额定功率，则通过将风力发电机组的功率增加到超发功率并维持一段时间直至风速到达第三风速，能够补偿在额定功率下提前变桨控制造成的功率损失。此外，在到达第 三风速时，降低风力发电机组的功率，能够提高风力发电机组部件的寿命，在第四风速时，若降低风力发电机组的转速，也能提高风力发电机组部件的寿命。
基于上述方法实施例提供的风力发电机组控制方法，本申请实施例还提供了一种风力发电机组控制装置，下面将结合附图对该风力发电机组控制装置进行说明，该装置的技术详情请参见上述方法实施例。
参见图10，该图10为本申请实施例提供的一种风力发电机组控制装置的结构示意图。如图10所示，该风力发电机组控制装置包括：
第一获取单元1001，用于获取风力发电机组的映射；所述风力发电机组的映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界；
第二获取单元1002，用于根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率；
第一控制单元1003，用于当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时，控制电机扭矩增加以控制所述风力发电机组维持在所述第一额定转速并使所述风力发电机组的功率增加，并且基于所述风力发电机组的功率和桨距角之间的第一标定关系控制所述桨距角增加以使所述风机轮毂推力按照所述轮毂推力限制边界变化；
第二控制单元1004，用于当所述风力发电机组的功率增加到超发功率时，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速直至达到目标风速。
在一种可能的实现方式中，所述装置还包括：
调节单元，用于在根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率之后，在当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时之前，当所述风力发电机组的功率小于所述开启功率时，调节电机扭矩以使所述风力发电机组的转速增加，并使所述风力发电机组的功率增加。
在一种可能的实现方式中，所述第二获取单元1002，包括：
第一获取子单元，用于获取所述在超发功率下的轮毂推力映射与所述轮毂推力限制边界的第一推力交点、第二推力交点、所述第一推力交点对应的第一 风速以及所述第二推力交点对应的第二风速；所述第一推力交点对应的第一风速小于所述第二推力交点对应的第二风速；
确定子单元，用于根据所述第一风速确定所述在超发功率下的风机功率映射中所述第一风速对应的开启功率，其中所述开启功率为开启提前变桨控制的功率。
在一种可能的实现方式中，所述装置还包括：
第三获取单元，用于获取所述风力发电机组的功率和桨距角之间的第一标定关系；
所述第三获取单元，包括：
第二获取子单元，用于获取所述轮毂推力限制边界中所述第一推力交点和所述第二推力交点之间的目标区间；所述目标区间的横坐标为风速，纵坐标为风机轮毂推力；
第三获取子单元，用于获取所述目标区间对应的风力发电机组的优化功率映射区间和所述目标区间对应的优化桨距角映射区间；所述风力发电机组优化功率映射区间用于表征风速和所述风力发电机组的功率之间的关系；所述优化桨距角映射区间用于表征风速和所述桨距角之间的关系；
第四获取子单元，用于根据所述优化功率映射区间和所述优化桨距角映射区间，获取所述风力发电机组的功率和桨距角之间的第一标定关系。
在一种可能的实现方式中，所述目标风速为切出风速。
在一种可能的实现方式中，所述装置还包括：
第四获取单元，用于获取超发功率维持阶段对应的前风速范围和目标功率变化阶段对应的后风速范围；
第五获取单元，用于根据所述风力发电机组的功率增加到超发功率时对应的第二风速，以及所述超发功率维持阶段对应的前风速范围，获取第三风速；在所述第三风速下，所述风力发电机组的功率为超发功率；
第六获取单元，用于根据所述第三风速以及所述目标功率变化阶段对应的后风速范围，获取第四风速，其中在所述第四风速时，所述风力发电机组的功率为所述额定功率。
在一种可能的实现方式中，所述装置还包括：
构建单元，用于根据所述第三风速、所述第三风速对应的超发功率、所述第四风速以及所述第四风速对应的额定功率，构建所述风力发电机组的功率和风速之间的第二标定关系。
在一种可能的实现方式中，当所述目标风速为所述第三风速时，所述装置还包括：
调整单元，用于当所述风速到达所述第三风速时，调整所述桨距角以控制所述风力发电机组的转速维持在所述第一额定转速，同时根据风力发电机组的功率和风速之间的第二标定关系获取实时风速对应的目标功率，调整所述电机扭矩以使所述风力发电机组到达所述目标功率。
在一种可能的实现方式中，所述装置还包括：
第七获取单元，用于当所述风力发电机组的功率降低到所述额定功率且所述风速达到所述第四风速时，获取第二额定转速，以及根据所述额定功率和所述第二额定转速的关系确定第二扭矩；
更改单元，用于将所述第一额定转速更改为所述第二额定转速，将所述电机扭矩调整为所述第二扭矩，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第二额定转速；所述风力发电机组的功率由于所述风力发电机组的转速维持在所述第二额定转速以及所述电机扭矩维持在第二扭矩而维持在额定功率。
在一种可能的实现方式中，所述装置还包括：
第三控制单元，用于当所述风力发电机组的功率降低到所述额定功率且所述风速达到所述第四风速时，所述电机扭矩达到第三扭矩，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速，所述风力发电机组的功率由于所述风力发电机组的转速维持在所述第一额定转速以及所述电机扭矩维持在第三扭矩而维持在额定功率。
本申请实施例还提供了一种存储有计算机程序的计算机可读存储介质，其中，当所述计算机程序被处理器执行时，实现如上述任一项实施例所述的风力发电机组控制方法。
参见图11，图11示出根据本公开的示例性实施例的计算装置的示意图。
参照图11，根据本公开的示例性实施例的计算装置，包括存储器111和处 理器112，所述存储器111上存储有计算机程序，当所述计算机程序被处理器112执行时，实现根据本公开的示例性实施例的风力发电机组控制方法。
在本公开的示例性实施例中，当所述计算机程序被处理器112执行时，可实现以下步骤：
获取风力发电机组的映射；所述风力发电机组的映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界；
根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率；
当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时，控制电机扭矩增加以控制所述风力发电机组维持在所述第一额定转速，并使所述风力发电机组的功率增加，并且按照所述风力发电机组的功率和桨距角之间的第一标定关系控制所述桨距角增加以使所述风机轮毂推力按照所述轮毂推力限制边界变化；
当所述风力发电机组的功率增加到超发功率时，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速直至达到目标风速。
通过以上的实施方式的描述可知，本领域的技术人员可以清楚地了解到上述实施例方法中的全部或部分步骤可借助软件加必需的通用硬件平台的方式来实现。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者诸如媒体网关等网络通信设备，等等)执行本申请各个实施例或者实施例的某些部分所述的方法。
在一个或多个实施例中，本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的方法而言，由于其与实施例公开的系统相对应，所以描述的比较简单，相关之处参见系统部分说明即可。
在一个或多个实施例中，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的 情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下，在其它实施例中实现。因此，本申请将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (13)

  1. 一种风力发电机组控制方法，其中，所述方法包括：
    获取风力发电机组的映射；所述风力发电机组的映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界；
    根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率；
    当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时，控制电机扭矩增加以使所述风力发电机组维持在所述第一额定转速并使所述风力发电机组的功率增加，并且基于所述风力发电机组的功率和桨距角之间的第一标定关系控制所述桨距角增加以使风机轮毂推力按照所述轮毂推力限制边界变化；
    当所述风力发电机组的功率增加到超发功率时，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速直至达到目标风速。
  2. 根据权利要求1所述的方法，其中，在根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率之后，在当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时之前，所述方法还包括：
    当所述风力发电机组的功率小于所述开启功率时，调节所述电机扭矩以使所述风力发电机组的转速增加，并使所述风力发电机组的功率增加。
  3. 根据权利要求1所述的方法，其中，所述根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率，包括：
    获取所述在超发功率下的轮毂推力映射与所述轮毂推力限制边界的第一推力交点、第二推力交点、所述第一推力交点对应的第一风速以及所述第二推力交点对应的第二风速；所述第一推力交点对应的第一风速小于所述第二推力交点对应的第二风速；
    根据所述第一风速确定所述在超发功率下的风机功率映射中所述第一风速对应的开启功率，其中所述开启功率为开启提前变桨控制的功率。
  4. 根据权利要求3所述的方法，其中，所述方法还包括：
    获取所述风力发电机组的功率和桨距角之间的第一标定关系；
    所述获取所述风力发电机组的功率和桨距角之间的第一标定关系，包括：
    获取所述轮毂推力限制边界中所述第一推力交点和所述第二推力交点之间的目标区间；所述目标区间的横坐标为风速，纵坐标为风机轮毂推力；
    获取所述目标区间对应的风力发电机组的优化功率映射区间和所述目标区间对应的优化桨距角映射区间；所述风力发电机组优化功率映射区间用于表征风速和所述风力发电机组的功率之间的关系；所述优化桨距角映射区间用于表征风速和所述桨距角之间的关系；
    根据所述优化功率映射区间和所述优化桨距角映射区间，获取所述风力发电机组的功率和桨距角之间的第一标定关系。
  5. 根据权利要求1所述的方法，其中，所述目标风速为切出风速。
  6. 根据权利要求1所述的方法，其中，所述方法还包括：
    获取超发功率维持阶段对应的前风速范围和目标功率变化阶段对应的后风速范围；
    根据所述风力发电机组的功率增加到超发功率时对应的第二风速，以及所述超发功率维持阶段对应的前风速范围，获取第三风速；在所述第三风速下，所述风力发电机组的功率为超发功率；
    根据所述第三风速以及所述目标功率变化阶段对应的后风速范围，获取第四风速，其中在所述第四风速时，所述风力发电机组的功率为所述额定功率。
  7. 根据权利要求6所述的方法，其中，所述方法还包括：
    根据所述第三风速、所述第三风速对应的超发功率、所述第四风速以及所述第四风速对应的额定功率，构建所述风力发电机组的功率和风速之间的第二标定关系。
  8. 根据权利要求6或7所述的方法，其中，当所述目标风速为所述第三风速时，所述方法还包括：
    当所述风速到达所述第三风速时，调整所述桨距角以控制所述风力发电机组的转速维持在所述第一额定转速，同时根据风力发电机组的功率和风速之间的第二标定关系获取实时风速对应的目标功率，调整所述电机扭矩以使所述风力发电机组到达所述目标功率。
  9. 根据权利要求8所述的方法，其中，所述方法还包括：
    当所述风力发电机组的功率降低到所述额定功率且所述风速达到所述第 四风速时，获取第二额定转速，以及根据所述额定功率和所述第二额定转速的关系确定第二扭矩；
    将所述第一额定转速更改为所述第二额定转速，将所述电机扭矩调整为所述第二扭矩，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第二额定转速；所述风力发电机组的功率由于所述风力发电机组的转速维持在所述第二额定转速以及所述电机扭矩维持在第二扭矩而维持在额定功率。
  10. 根据权利要求8所述的方法，其中，所述方法还包括：
    当所述风力发电机组的功率降低到所述额定功率且所述风速达到所述第四风速时，所述电机扭矩达到第三扭矩，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速，所述风力发电机组的功率由于所述风力发电机组的转速维持在所述第一额定转速以及所述电机扭矩维持在第三扭矩而维持在额定功率。
  11. 一种风力发电机组控制装置，其中，所述装置包括：
    第一获取单元，用于获取风力发电机组的映射；所述风力发电机组的映射包括在超发功率下的轮毂推力映射、在超发功率下的风机功率映射、轮毂推力限制边界；
    第二获取单元，用于根据所述风力发电机组的映射，获取开启提前变桨控制的开启功率；
    第一控制单元，用于当所述风力发电机组的转速达到第一额定转速且所述风力发电机组的功率达到所述开启功率时，控制电机扭矩增加以使所述风力发电机组维持在所述第一额定转速并使所述风力发电机组的功率增加，并且基于所述风力发电机组的功率和桨距角之间的第一标定关系控制所述桨距角增加以使所述风机轮毂推力按照所述轮毂推力限制边界变化；
    第二控制单元，用于当所述风力发电机组的功率增加到超发功率时，控制所述桨距角增加以控制所述风力发电机组的转速维持在所述第一额定转速直至达到目标风速。
  12. 一种存储有计算机程序的计算机可读存储介质，其中，当所述计算机程序被处理器执行时，实现权利要求1至10中任一项所述的风力发电机组控制方法。
  13. 一种计算装置，包括：
    至少一个处理器；
    至少一个存储器，存储有计算机程序，当所述计算机程序被所述至少一个处理器执行时，实现权利要求1至10中任一项所述的风力发电机组控制方法。
PCT/CN2022/102746 2022-01-10 2022-06-30 一种风力发电机组控制方法、装置及设备 Ceased WO2023130686A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020247001526A KR20240022594A (ko) 2022-01-10 2022-06-30 풍력 터빈 발전기 세트의 제어 방법 및 장치 및 디바이스
US18/575,913 US12590567B2 (en) 2022-01-10 2022-06-30 Control method and apparatus for wind turbine generator set, and device
EP22918142.5A EP4357608A4 (en) 2022-01-10 2022-06-30 CONTROL METHOD AND APPARATUS FOR WIND GENERATOR ASSEMBLY, AND DEVICE
AU2022430604A AU2022430604B2 (en) 2022-01-10 2022-06-30 Control method and apparatus for wind turbine generator set, and device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210023305.9 2022-01-10
CN202210023305.9A CN114294153B (zh) 2022-01-10 2022-01-10 一种风力发电机组控制方法、装置及设备

Publications (1)

Publication Number Publication Date
WO2023130686A1 true WO2023130686A1 (zh) 2023-07-13

Family

ID=80974942

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/102746 Ceased WO2023130686A1 (zh) 2022-01-10 2022-06-30 一种风力发电机组控制方法、装置及设备

Country Status (6)

Country Link
US (1) US12590567B2 (zh)
EP (1) EP4357608A4 (zh)
KR (1) KR20240022594A (zh)
CN (1) CN114294153B (zh)
AU (1) AU2022430604B2 (zh)
WO (1) WO2023130686A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114294153B (zh) 2022-01-10 2023-03-31 江苏金风科技有限公司 一种风力发电机组控制方法、装置及设备
CN117514603A (zh) * 2022-07-28 2024-02-06 金风科技股份有限公司 风力发电机组的控制方法、装置、控制器及介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562453A (zh) * 2012-03-01 2012-07-11 国电联合动力技术有限公司 变速恒频风力发电机在额定转速阶段的变桨控制方法
KR20120110685A (ko) * 2011-03-30 2012-10-10 주식회사 디엠에스 풍력 발전기의 토크 제어 방법
CN102900611A (zh) * 2011-05-12 2013-01-30 通用电气公司 风力涡轮机扭矩-速度控制
CN203420825U (zh) * 2013-04-24 2014-02-05 北京金风科创风电设备有限公司 风机塔架振动抑制系统和提高风机切出风速的控制系统
CN104088753A (zh) * 2014-06-24 2014-10-08 许继集团有限公司 一种大型风力发电机组增加最小净空的尖峰调节控制方法
US20180034394A1 (en) * 2016-07-29 2018-02-01 Hitachi, Ltd. Wind power generating system
CN114294153A (zh) * 2022-01-10 2022-04-08 江苏金风科技有限公司 一种风力发电机组控制方法、装置及设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797629B (zh) * 2012-08-03 2014-05-14 国电联合动力技术有限公司 一种风电机组的控制方法、控制器及其控制系统
DK2799711T3 (en) * 2013-05-03 2017-10-23 Ge Renewable Tech Wind Bv Method of operating a wind turbine
DK2878809T3 (en) 2013-11-29 2017-09-25 Alstom Renovables Espana Sl Methods of operating a wind turbine, wind turbines and wind farms
EP3158190B1 (en) * 2014-06-20 2019-04-17 Mita-Teknik A/S System for thrust-limiting of wind turbines
CN107110121B (zh) * 2014-11-24 2020-04-07 维斯塔斯风力系统集团公司 对风力涡轮机构造的确定
US20190072072A1 (en) * 2017-09-06 2019-03-07 Envision Energy Usa Ltd. Variable speed control of wind turbine generator based on estimated torque
DK3786446T3 (da) * 2019-08-26 2026-03-30 Wobben Properties Gmbh Fremgangsmåde til drift af en vindturbine
CN112523941B (zh) * 2020-11-25 2021-11-09 明阳智慧能源集团股份公司 一种防止风力发电机组超速的控制方法与模块
CN112983737B (zh) * 2021-03-04 2022-04-01 中国大唐集团科学技术研究院有限公司华中电力试验研究院 一种基于功率模糊控制的风力发电机组变桨控制方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120110685A (ko) * 2011-03-30 2012-10-10 주식회사 디엠에스 풍력 발전기의 토크 제어 방법
CN102900611A (zh) * 2011-05-12 2013-01-30 通用电气公司 风力涡轮机扭矩-速度控制
CN102562453A (zh) * 2012-03-01 2012-07-11 国电联合动力技术有限公司 变速恒频风力发电机在额定转速阶段的变桨控制方法
CN203420825U (zh) * 2013-04-24 2014-02-05 北京金风科创风电设备有限公司 风机塔架振动抑制系统和提高风机切出风速的控制系统
CN104088753A (zh) * 2014-06-24 2014-10-08 许继集团有限公司 一种大型风力发电机组增加最小净空的尖峰调节控制方法
US20180034394A1 (en) * 2016-07-29 2018-02-01 Hitachi, Ltd. Wind power generating system
CN114294153A (zh) * 2022-01-10 2022-04-08 江苏金风科技有限公司 一种风力发电机组控制方法、装置及设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4357608A4

Also Published As

Publication number Publication date
CN114294153B (zh) 2023-03-31
AU2022430604A1 (en) 2024-02-08
EP4357608A4 (en) 2024-11-20
AU2022430604B2 (en) 2025-04-24
CN114294153A (zh) 2022-04-08
KR20240022594A (ko) 2024-02-20
US12590567B2 (en) 2026-03-31
US20240337244A1 (en) 2024-10-10
EP4357608A1 (en) 2024-04-24

Similar Documents

Publication Publication Date Title
US6420795B1 (en) Variable speed wind turbine generator
CN104612897B (zh) 一种风力发电机组的控制方法及装置
WO2023130686A1 (zh) 一种风力发电机组控制方法、装置及设备
US20040207208A1 (en) Variable speed wind turbine generator
CN110429668B (zh) 减载风电机组变速变桨协调优化频率控制方法
CN117905634B (zh) 基于风速估计的风电机组有功功率协调控制方法及装置
CN105927469A (zh) 风力发电机组的限功率控制方法和控制装置
CN110873022A (zh) 风力发电机组叶片桨距角自寻优的方法及其装置
CN109441722B (zh) 一种适用于低风速段风电机组启停机的控制系统及方法
CN108488035A (zh) 永磁直驱风力发电机组失速和变桨混合控制方法
CN114263564A (zh) 考虑不变桨风速范围的风电机组有功功率控制方法及系统
US20210207585A1 (en) Wind turbine control using constraint scheduling
CN118971041B (zh) 考虑风速变化和转速恢复的风电机组自适应频率控制方法
CN112855434B (zh) 风电机组叶片的控制方法、装置、电子设备及存储介质
US12429026B2 (en) Method for controlling a wind power installation
CN104832368B (zh) 基于功率倍增特性的浓缩风能型风电机组变桨距控制方法
US20220397092A1 (en) Method for controlling the rotor speed of a wind turbine
JP2017057787A (ja) 風力発電システム及び風力発電制御方法
CN116565950A (zh) 一种考虑频率动态特性的风电机组自适应下垂控制方法
Aslmostafa et al. Maximizing power generation in floating offshore wind turbines: nonlinear robust control approaches in low-wind region
NL2036547B1 (en) Method of operating a wind turbine
CN120626415B (zh) 基于pmsg风电机组的紧急控制方法、装置、设备及介质
CN116988923B (zh) 一种发电功率限最小桨距角控制方法、系统及存储介质
CN116950840B (zh) 基于风机功率限制的控制方法、装置、设备及存储介质
CN119737268A (zh) 一种基于转速偏差的风力发电系统变桨距控制方法及系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22918142

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 18575913

Country of ref document: US

ENP Entry into the national phase

Ref document number: 20247001526

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1020247001526

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2022430604

Country of ref document: AU

Ref document number: 2022918142

Country of ref document: EP

Ref document number: AU2022430604

Country of ref document: AU

Ref document number: 22 918 142.5

Country of ref document: EP

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112024000919

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 2022918142

Country of ref document: EP

Effective date: 20240119

Ref document number: 2022430604

Country of ref document: AU

Date of ref document: 20220630

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 112024000919

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20240116

WWE Wipo information: entry into national phase

Ref document number: 202417030424

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

WWG Wipo information: grant in national office

Ref document number: 18575913

Country of ref document: US