CN113389859B - Wind generating set prediction type constant speed box system and constant speed control method - Google Patents
Wind generating set prediction type constant speed box system and constant speed control method Download PDFInfo
- Publication number
- CN113389859B CN113389859B CN202110597206.7A CN202110597206A CN113389859B CN 113389859 B CN113389859 B CN 113389859B CN 202110597206 A CN202110597206 A CN 202110597206A CN 113389859 B CN113389859 B CN 113389859B
- Authority
- CN
- China
- Prior art keywords
- gear
- wind
- generating set
- rotating speed
- main shaft
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008859 change Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000008054 signal transmission Effects 0.000 claims abstract description 3
- 230000001276 controlling effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical group CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/70—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
-
- 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
- F03D15/00—Transmission of mechanical power
- F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
-
- 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
- F03D7/04—Automatic control; Regulation
- F03D7/041—Automatic control; Regulation by means of a mechanical governor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a wind generating set prediction type constant speed box system and a constant speed control method, wherein the system comprises a planetary gear train, a control gear, a power source, an anemometer and a controller, wherein the outer circumference of a gear ring in the planetary gear train is provided with a gear surface meshed with the control gear, a planet carrier and a sun gear of the planetary gear train are respectively fixedly connected with a wind wheel shaft and a generator main shaft of the wind generating set, the power source is in transmission connection with the control gear, the controller is in control connection with the power source, the anemometer is arranged in the working environment of the wind generating set, and the anemometer is in signal transmission connection with the controller. According to the method, the wind wheel shaft rotating speed is obtained through the prediction of the controller according to the anemometer data, and then the rotating speed of the control gear is controlled through the power source, so that the rotating speed of the main shaft of the generator is kept constant to be a set target value. When external conditions change, the invention can obtain more stable output results through active control and better utilize wind energy to generate power.
Description
Technical Field
The invention relates to the field of constant-speed control systems of wind generating sets, in particular to a prediction type constant-speed box system of a wind generating set and a constant-speed control method.
Background
When the wind generating set generates electricity, wind drives the impeller to rotate to form mechanical torque, then the mechanical torque is increased to the rotation speed required by the main shaft of the asynchronous generator through the gear box by the main shaft transmission chain, and the electricity is generated by the generator. The conventional gear box is of a constant speed ratio, so that when the wind speed changes, the rotating speed of the impeller changes, so that the rotating speed of the main shaft of the generator after the speed of the gear box increases changes, the frequency of electric energy generated by the generator fluctuates, the generated electric energy is reduced or the practical application value is directly lost, and the generator can only be independently used and is difficult to be integrated into a main power grid.
At present, a gear box mechanism with a fixed speed ratio is adopted for increasing the rotation speed of an impeller, a certain speed regulating mechanism is adopted for solving the problem of the change of the main shaft speed of the generator caused by the change of the wind speed in the prior art so as to control the output stability of the generator, and the common solving means is to control the torque output of the impeller, and the speed regulating mechanism is arranged by adopting the measures of deflection of the impeller, changing the aerodynamic resistance, adding pitch adjustment and the like. However, these speed regulation structures are not aimed at the gear box part of the transmission system, but are used for adjusting the direction of the impeller or changing the angle of the fan blade or changing the pitch of the fan blade, etc. By adopting the solution, not only the complexity of the mechanical structure is increased, but also the strength of key parts such as impellers of the generator set can be influenced, the failure probability is increased, maintenance becomes more difficult, and meanwhile, the utilization efficiency of wind energy is also reduced.
Disclosure of Invention
The invention aims to provide a wind generating set prediction type constant speed box system and a constant speed control method, which are used for solving the problem that the frequency of output electric energy of a wind generating set in the prior art is unstable when the wind speed changes.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a wind generating set prediction type constant speed box system is characterized in that: the wind turbine generator system comprises a planetary gear train, a control gear, a power source, an anemometer and a controller, wherein the planetary gear train comprises a gear ring, a sun gear, a planet wheel and a planet carrier, the outer circumference of the gear ring is provided with a gear surface, the planet carrier of the planetary gear train is fixedly connected with a wind wheel shaft of a wind turbine generator system, the sun gear of the planetary gear train is fixedly connected with a generator main shaft of the wind turbine generator system, the control gear is meshed with the gear surface on the outer circumference of the gear ring in the planetary gear train, the power source is connected with the control gear, the anemometer is arranged in the working environment of the wind turbine generator system and is in signal transmission connection with the controller, and wind speed data of the working environment of the wind turbine generator system is collected by the anemometer and transmitted to the controller.
The wind generating set prediction type constant speed box system is characterized in that: the controller is electrically connected with a wind wheel rotating speed sensor, the wind wheel rotating speed sensor is matched with a wind wheel shaft of the wind generating set in a working mode, and the wind wheel rotating speed sensor senses the rotating speed of the wind wheel shaft of the wind generating set and sends rotating speed data to the controller.
The wind generating set prediction type constant speed box system is characterized in that: the controller is electrically connected with a main shaft rotating speed sensor, the main shaft rotating speed sensor is matched with a main shaft of a generator of the wind generating set in a working mode, and the main shaft rotating speed sensor senses the actual rotating speed of the main shaft of the generator of the wind generating set and sends rotating speed data to the controller.
A wind generating set constant speed control method based on a predictive constant speed box system is characterized in that: and the controller predicts the change amount of the rotating speed of the wind turbine shaft in the wind turbine generator set at the current wind speed according to the wind speed data measured by the anemometer, and then controls the rotating speed of the control gear through a power source by combining the gear ratio of the gear ring and the sun gear and the gear ratio of the gear ring and the control gear, so as to control the rotating speed of the gear ring, and keep the rotating speed of the main shaft of the generator in the wind turbine generator set constant as a set target value.
The constant speed control method of the wind generating set is characterized by comprising the following steps of: the controller controls the rotating speed of the control gear based on a control formula, so that the rotating speed of the main shaft of the generator in the wind generating set is kept constant to be a set target value, and the control formula is as follows:
n 4 ＝b((1+a)(n 3+ Δn 3 )-n 1 )/a，
wherein: a is the gear ratio of a gear ring and a sun gear in a planetary gear train; b is the gear ratio of the gear ring and the control gear;
n 1 the rotation speed of the sun gear in the planetary gear train is n because the sun gear is fixedly connected with the main shaft of the generator of the wind generating set 1 Namely, a set target value which is required to be kept constant for a generator main shaft of the wind generating set;
n 3 as the current rotating speed of the planet carrier in the planet wheel system, n is as the planet carrier is fixedly connected with the wind wheel shaft of the wind generating set 3 Namely the wind wheel shaft rotating speed of the wind generating set measured by a wind wheel rotating speed sensor;
Δn 3 as the change of the rotating speed of the planet carrier, the planet carrier is fixedly connected with the wind wheel shaft of the wind generating set, so delta n is calculated 3 Namely the wind wheel shaft rotating speed variation quantity, delta n, which is predicted by the controller according to the anemometer measuring data 3 The initial value is 0;
n 4 to control the controlled rotational speed of the gear.
The constant speed control method of the wind generating set is characterized by comprising the following steps of: the controller obtains the actual rotation speed of the main shaft of the generator in the wind generating set, which is sensed by the main shaft rotation speed sensor, and combines the set target value, which is required to be kept constant, of the rotation speed of the main shaft of the generator in the wind generating set to obtain a correction coefficient, and then the controlled rotation speed of the control gear is corrected through the correction coefficient, so that the rotation speed of the main shaft of the generator in the wind generating set is kept constant to the set target value.
The constant speed control method of the wind generating set is characterized by comprising the following steps of: setting a correction coefficient as c, and correcting the controlled rotation speed of the control gear as follows when the actual rotation speed of the main shaft of the generator is larger than a set target value which needs to be kept constant: (1+c) the controlled rotational speed of the pre-correction control gear;
when the actual rotation speed of the main shaft of the generator is smaller than a set target value which needs to be kept constant, the controlled rotation speed of the control gear is corrected to be: (1-c) controlling the controlled rotational speed of the gear before correction.
Aiming at an objective environment that wind speed is not controlled in a working environment of a wind generating set, the system constructs a transmission mechanism between a wind wheel shaft and a main shaft of the generating set through a planetary gear train, and simultaneously constructs a control gear for controlling the speed of a gear ring in the planetary gear train, so that the aim of controlling the rotating speed of the main shaft of the generating set is fulfilled. According to the method, the anemometer is used for measuring the ambient wind speed and is used for predicting wind speed data of the wind wheel shaft, the rotating speed of the wind wheel shaft which can be achieved under the current wind speed is predicted according to the wind speed data measured by the anemometer, and the planetary gear train is controlled through the control gear according to the predicted rotating speed of the wind wheel shaft, so that the rotating speed of the main shaft of the generator is kept constant to be a set target value. Through the mode, the electric energy output of the generator with stable frequency is finally obtained.
Compared with the prior art, the invention has the advantages that:
when the wind speed changes, the invention can ensure that the main shaft of the generator set outputs stable rotating speed and the generator set can output electric energy with stable frequency. The invention does not need to change the integrity of the impeller or adjust or change the deflection of the impeller, the installation angle or pitch of the fan blade and the like, reduces the complexity of the wind generating set, increases the reliability and improves the utilization efficiency of wind energy.
The invention simplifies the mechanical structure of the wind generating set, can more quickly and actively respond to the change of external conditions by applying the electronic control technology, and can obtain more stable output result by active control when the external conditions change, thereby better utilizing wind energy to generate power.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a schematic diagram of a carrier portion of the system of the present invention;
fig. 3 is a flow chart of the method of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1 and 2, the wind driven generator prediction type constant speed box system of the invention consists of a gear box device and an electronic control system, wherein the gear box device comprises a planetary gear train formed by a sun gear 4, a planetary gear 5, a planetary carrier 6 and a gear ring 7, a wind wheel shaft 1, a control gear 8 and a generator main shaft 13.
In the invention, the planetary gear train is a planetary gear train with four elements of variable transmission ratio, wherein the four elements consist of a sun gear 4, a planet carrier 6, a gear ring 7 and a control gear 8, and the sun gear 4, the planet carrier 6 and the gear ring 7 in the planetary gear train can all rotate. The wind turbine generator system wind turbine shaft 1 and the planet carrier 6 are coaxially and fixedly connected on the rotating axis, or the wind turbine shaft 1 and the non-center position of the planet carrier 6 are fixedly connected through a connecting piece. The main shaft 12 of the wind power generator is coaxially and fixedly connected with the sun wheel 4 on the rotation axis.
In the planetary gear train, the ring gear 7 is provided with a gear surface on the outer circumferential surface of the ring gear 7 in addition to the gears required in the planetary gear train, and the control gear 8 is meshed with the gear surface on the outer circumferential surface of the ring gear 7.
The electronic control system consists of a wind wheel shaft gear ring 2, a wind wheel rotation speed sensor 3, a power source 9, a controller 10, a main shaft rotation speed sensor 11, a generator main shaft gear ring 13 and an anemometer 14. The power source 9 is a motor, or a hydraulic motor, or a pneumatic motor, or other mechanisms capable of realizing rotation of a driving target component, and an output shaft of the power source 9 is fixedly connected with the control gear 8, specifically, the control gear 8 may be coaxially fixed on an output shaft of the power source 9, or the output shaft of the power source 9 may be connected with the control gear 8 through other transmission mechanisms, in this embodiment, the power source 9 is taken as an example of a motor. The wind wheel shaft gear ring 2 synchronously rotates along with the wind wheel shaft 1, the wind wheel rotation speed sensor 3 is arranged on the side of the wind wheel shaft gear ring 2, the generator main shaft gear ring 13 synchronously rotates along with the generator main shaft, and the main shaft rotation speed sensor 11 is arranged on the side of the generator main shaft gear ring 13. The anemometer 14 is an impeller type anemometer, the anemometer 14 is arranged in the working environment of the wind turbine generator set, and an impeller of the anemometer 14 is installed in parallel with the impeller of the wind turbine generator set and is used for sensing wind speed signals. The wind wheel rotation speed sensor 3, the main shaft rotation speed sensor 11, the anemometer 14 and the power source 9 are electrically connected with the controller 10 through wires, the controller 10 receives data collected by the wind wheel rotation speed sensor 3, the main shaft rotation speed sensor 11 and the anemometer 14, and the controller 10 controls the rotation speed of the power source 9, so that the control of the rotation speed of the control gear 8 is realized.
In application, the impeller is connected to the wind turbine shaft 1, the generator main shaft 12 is connected to the generator main body, and the whole wind turbine is arranged on a bracket of the wind generating set. Before the planetary gear system does not start working, the power source 9 does not act, the control gear 8 does not rotate, the gear ring 7 is fixed at the moment, and the planetary gear system has an initial transmission ratio according to own gear parameters. When the wind blows the impeller to rotate to a certain speed, the generator main shaft 12 is accelerated to a preset rotation speed through transmission, the whole system starts to work, the impeller is set to rotate to the speed, and when the planetary gear system is in an initial transmission ratio, the generator main shaft 12 rotates stably and corresponds to the speed value of the anemometer 14.
As shown in fig. 3, a control flow chart of the constant speed control method of the wind generating set is shown. When the wind speed changes, the speed of the anemometer 14 and the wind wheel can change, but because the rotational inertia of the anemometer 14 is far smaller than that of the wind wheel, the rotating speed of the anemometer 14 can change faster than that of the wind wheel, and the wind speed can be sensed more accurately. The anemometer 14 transmits wind speed signals to the controller 10 through wires, the controller 10 calculates the rotating speed of the wind wheel according to the rotating inertia of the impeller, then calculates the rotating speed of the gear ring 7 according to the inherent rule of the rotating speeds among three elements determined by parameters set by the sun wheel 4, the planet carrier 6 and the gear ring 7, under the condition that the sun wheel 4 rotates along with the main shaft 12 of the generator according to the set rotating speed, drives the power source 9 to drive the control gear 8 to rotate through the wires, and then drives the gear ring 7 to rotate by the control gear 8, so that the planetary gear train obtains the transmission ratio under the current condition in advance, and the rotating speed of the main shaft 12 of the generator is ensured to be consistent with the rotating speed of the main shaft gear ring 13 of the generator.
The wind wheel rotation speed sensor 3 senses the actual rotation speed of the wind wheel through the wind wheel shaft gear ring 2 on the wind wheel shaft 1, and the actual signal of the main shaft rotation speed sensed by the main shaft rotation speed sensor 11 through the main shaft gear ring 13 of the generator on the main shaft 12 of the generator is also fed back to the controller 10, and the controller 10 drives the control gear 8 to correct the rotation speed of the gear ring 7 through controlling the power source 9.
By continuously controlling the speed of the control gear 8, the invention can keep the rotation speed of the main shaft 12 of the generator at a constant speed, and the output of the generator is electric energy with constant frequency.
According to the invention, the rotation speed change of the impeller of the wind generating set can be predicted through the rotation speed change of the anemometer according to the rotation speed relation between the wind wheel of the wind generating set and the impeller of the anemometer under the same wind condition, and then the corresponding rotation speed of the gear ring 7 is calculated through the internal rule of the gear box device.
Setting the moment of inertia of a wind wheel of a wind generating set as J 1 The rotation speed of the planetary carrier 6 is identical to the rotation speed of the planetary carrier, and is set as n 3 The speed change amount within the time Deltat is Deltan 3 The effective acting area of wind power is S 1 Under the action of wind pressure p, the relation among the parameters is as follows:
J 1 Δn 3 /Δt＝p S 1 ，
also, the moment of inertia of the anemometer impeller is set to J 5 The rotation speed is set to n 5 The speed change amount within the time Deltat is Deltan 5 The effective acting area of wind power is S 5 Under the same wind pressure p, the relation among the parameters is as follows:
J 5 Δn 5 /Δt＝p S 5 ，
the two formulas above cancel Δt and p and are finished to obtain:
Δn 3 ＝(J 5 /J 1 )(S 1 /S 5 )Δn 5 。
therefore, the speed change Δn of the impeller is measured based on the anemometer 14 5 The rotational speed deltan of the air-out wheel shaft 1 can be predicted 3 Amount of change.
In a wheel control cycle, the sum of the current speed of the wind turbine shaft 1 and the variable is reassigned to the speed n of the wind turbine shaft 1 3 The method can perform specific calculation in the control process, namely:
n 3 ＝n 3 +Δn 3 。
as also shown in FIG. 2, the wind of the present inventionGear box device in power generator predictive constant speed box system and control method, and rotation speed of sun gear 4 is set to be n 1 The rotation speed of the gear ring 7 is n 2 The rotation speed of the planet carrier 6 is n 3 The rotation speed of the control gear 8 is n 4 The gear ratio of the ring gear 7 to the sun gear 4 is a, the gear ratio of the ring gear 7 to the control gear 8 is b, the rotational speed n of the sun gear 4 1 The rotation speed of the main shaft 12 of the generator is consistent, the rotation speed is a constant value in the application of the wind generating set, and the rotation speed can be measured by a main shaft rotation speed sensor 11; rotational speed n of planet carrier 6 3 The wind wheel rotation speed sensor is consistent with the wind wheel shaft 1, is an input quantity and can be measured by the wind wheel rotation speed sensor 3; rotational speed n of ring gear 7 2 Is the controlled quantity; control gear 8 rotation speed n 4 Is a control amount obtained by controlling the power source 9 by the controller 10. The inherent regularity of the planetary gear train is as follows:
n 1 +a n 2 -(1+a)n 3 ＝0，
at the rotation speed n of the sun gear 4 1 The rotation speed n of the planet carrier 6 is a known set value 3 The rotation speed n of the gear ring 7 can be calculated under the condition of rotating along with the wind wheel 2 ：
n 2 ＝((1+a)n 3 -n 1 )/a，
To obtain the rotational speed n of the ring gear 7 2 From the meshing relationship between the ring gear 7 and the control gear 8, the controller 10 calculates the rotational speed n of the control gear 8 4 ：
n 4 ＝b n 2 ＝b((1+a)n 3 -n 1 )/a，
In practical application, the rotation speed n of the planet carrier 6 3 There will be a predicted variation deltan 3 If the change should be counted, the controller 10 calculates the rotational speed n of the control gear 8 4 The correction should be:
n 4 ＝b n 2 ＝b((1+a)(n 3 +Δn 3 )-n 1 )/a，
the control method of the present invention can be realized by operating the power source 9 at the obtained rotational speed.
In actual operation, the wind generating set prediction type constant speed box system of the invention obtains the generator main shaft 1 through calculation2 rotational speed n 1 Possibly deviating from the set value, the controller 10 corrects the rotational speed n of the control gear 8 by the power source 9 4 To do so. Setting the rotation speed n of the control gear 8 4 C when the rotation speed n of the main shaft 12 of the generator is 1 When the actual rotation speed of the control gear 8 is higher than the set value, the controller 10 corrects the actual rotation speed to (1+c) n 4 The method comprises the steps of carrying out a first treatment on the surface of the When the rotation speed n of the main shaft 12 of the generator 1 When the actual rotation speed of the control gear 8 is lower than the set value, the controller 10 corrects the actual rotation speed to (1-c) n 4 . In the operation of the passive constant speed box system of the wind generating set, the controller 10 can continuously correct the rotation speed of the control gear 8, so that the output rotation speed of the constant speed box can be ensured to be stable at a set value under the condition that different wind speeds act on the wind wheel.
The embodiments of the present invention are merely described in terms of preferred embodiments of the present invention, and are not intended to limit the spirit and scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention, and the technical content of the present invention as claimed is fully described in the claims.
Claims (5)
1. A wind generating set prediction type constant speed box system is characterized in that: the wind turbine generator system comprises a planetary gear train, a control gear, a power source, an anemometer and a controller, wherein the planetary gear train comprises a gear ring, a sun gear, a planet wheel and a planet carrier, the outer circumference of the gear ring is provided with a gear surface, the planet carrier of the planetary gear train is fixedly connected with a wind wheel shaft of a wind turbine generator system, the sun gear of the planetary gear train is fixedly connected with a generator main shaft of the wind turbine generator system, the control gear is meshed with the gear surface on the outer circumference of the gear ring in the planetary gear train, the power source is in transmission connection with the control gear, the controller is in control connection with the power source, the anemometer is arranged in signal transmission connection with the controller, and wind speed data of the working environment of the wind turbine generator system is collected by the anemometer and transmitted to the controller;
the control method of the wind generating set prediction type constant speed box system comprises the following steps:
the wind speed data measured by the anemometer is predicted by the controller to obtain the change quantity of the rotating speed of the wind turbine shaft in the wind generating set at the current wind speed, and the rotating speed of the control gear is controlled through the power source by combining the gear ratio of the gear ring and the sun gear and the gear ratio of the gear ring and the control gear, so that the rotating speed of the gear ring is controlled, and the rotating speed of the main shaft of the generator in the wind generating set is kept constant to be a set target value; the controller controls the rotating speed of the control gear based on a control formula, so that the rotating speed of the main shaft of the generator in the wind generating set is kept constant to be a set target value, and the control formula is as follows:
n 4 = b ((1+a)(n 3+ Δn 3 )-n 1 ) / a，
wherein: a is the gear ratio of a gear ring and a sun gear in a planetary gear train; b is the gear ratio of the gear ring and the control gear;
n 1 the rotation speed of the sun gear in the planetary gear train is n because the sun gear is fixedly connected with the main shaft of the generator of the wind generating set 1 Namely, a set target value which is required to be kept constant for a generator main shaft of the wind generating set;
n 3 as the current rotating speed of the planet carrier in the planet wheel system, n is as the planet carrier is fixedly connected with the wind wheel shaft of the wind generating set 3 Namely the wind wheel shaft rotating speed of the wind generating set measured by a wind wheel rotating speed sensor;
Δn 3 as the change of the rotating speed of the planet carrier, the planet carrier is fixedly connected with the wind wheel shaft of the wind generating set, so delta n is calculated 3 Namely the wind wheel shaft rotating speed variation quantity, delta n, which is predicted by the controller according to the anemometer measuring data 3 The initial value is 0;
n 4 to control the controlled rotational speed of the gear.
2. A wind generating set predictive constant speed tank system as defined in claim 1, wherein: the controller is electrically connected with a wind wheel rotating speed sensor, the wind wheel rotating speed sensor is matched with a wind wheel shaft of the wind generating set in a working mode, and the wind wheel rotating speed sensor senses the rotating speed of the wind wheel shaft of the wind generating set and sends rotating speed data to the controller.
3. A wind generating set predictive constant speed tank system as defined in claim 1, wherein: the controller is electrically connected with a main shaft rotating speed sensor, the main shaft rotating speed sensor is matched with a main shaft of a generator of the wind generating set in a working mode, and the main shaft rotating speed sensor senses the actual rotating speed of the main shaft of the generator of the wind generating set and sends rotating speed data to the controller.
4. A wind generating set forecast constant speed tank system as claimed in claim 3, wherein: the controller obtains the actual rotation speed of the main shaft of the generator in the wind generating set, which is sensed by the main shaft rotation speed sensor, and combines the set target value, which is required to be kept constant, of the rotation speed of the main shaft of the generator in the wind generating set to obtain a correction coefficient, and then the controlled rotation speed of the control gear is corrected through the correction coefficient, so that the rotation speed of the main shaft of the generator in the wind generating set is kept constant to the set target value.
5. A wind turbine generator system predictive constant speed tank system as in claim 4, wherein: setting a correction coefficient as c, and correcting the controlled rotation speed of the control gear as follows when the actual rotation speed of the main shaft of the generator is larger than a set target value which needs to be kept constant: (1+c) the controlled rotational speed of the pre-correction control gear;
when the actual rotation speed of the main shaft of the generator is smaller than a set target value which needs to be kept constant, the controlled rotation speed of the control gear is corrected to be: (1-c) controlling the controlled rotational speed of the gear before correction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597206.7A CN113389859B (en) | 2021-05-31 | 2021-05-31 | Wind generating set prediction type constant speed box system and constant speed control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597206.7A CN113389859B (en) | 2021-05-31 | 2021-05-31 | Wind generating set prediction type constant speed box system and constant speed control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113389859A CN113389859A (en) | 2021-09-14 |
| CN113389859B true CN113389859B (en) | 2023-04-25 |
Family
ID=77619541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110597206.7A Active CN113389859B (en) | 2021-05-31 | 2021-05-31 | Wind generating set prediction type constant speed box system and constant speed control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113389859B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112311A (en) * | 1975-12-18 | 1978-09-05 | Stichting Energieonderzoek Centrum Nederland | Windmill plant for generating energy |
| US4774855A (en) * | 1982-08-17 | 1988-10-04 | Vickers Shipbuilding And Engineering Limited | Apparatus for providing an electrical generator with a constant rotational speed from a variable speed input |
| CN201106525Y (en) * | 2007-08-27 | 2008-08-27 | 上海瑞仁国际贸易有限公司 | Wind generator set with automatic control constant speed step-up gear |
| JP2010031673A (en) * | 2008-07-25 | 2010-02-12 | Apm Corp | Wind power generation system |
| CN102120424A (en) * | 2010-12-09 | 2011-07-13 | 浙江师范大学 | Controller and control method of eddy-current retarder of combined braking system |
| CN102506017A (en) * | 2011-11-22 | 2012-06-20 | 江麓机电科技有限公司 | Static-pressure differential speed regulation-type main transmission in wind generating set |
| CN102852726A (en) * | 2012-08-29 | 2013-01-02 | 华北电力大学 | Gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on differential mechanism |
| CN103233862A (en) * | 2013-04-09 | 2013-08-07 | 浙江大学 | Stepless speed-up type wind power generation system |
| CN103644279A (en) * | 2013-12-23 | 2014-03-19 | 重庆望江工业有限公司 | Constant-speed output gearbox of wind-power generating set |
| CN103967721A (en) * | 2014-05-23 | 2014-08-06 | 张东升 | Wind generating set |
| CN104066977A (en) * | 2011-12-20 | 2014-09-24 | 文德浮洛科技有限公司 | Power generating system and hydraulic control system |
| CN105114347A (en) * | 2015-08-14 | 2015-12-02 | 浙江迪野农业装备有限公司 | Electric power test system for agricultural fan |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008184932A (en) * | 2007-01-29 | 2008-08-14 | Mitsubishi Heavy Ind Ltd | Wind power generator |
| US8008797B2 (en) * | 2009-02-13 | 2011-08-30 | Bernard Joseph Simon | System for converting wind power to electrcial power with transmission |
| WO2011011358A2 (en) * | 2009-07-20 | 2011-01-27 | Kyung-Soo Han | A system and method for providing a constant output from a variable flow input |
| DE102009028612A1 (en) * | 2009-08-18 | 2011-02-24 | Zf Friedrichshafen Ag | Wind turbine and method for controlling the operation of a wind turbine |
| US9476401B2 (en) * | 2010-07-20 | 2016-10-25 | Differential Dynamics Corporation | Marine hydrokinetic turbine |
-
2021
- 2021-05-31 CN CN202110597206.7A patent/CN113389859B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112311A (en) * | 1975-12-18 | 1978-09-05 | Stichting Energieonderzoek Centrum Nederland | Windmill plant for generating energy |
| US4774855A (en) * | 1982-08-17 | 1988-10-04 | Vickers Shipbuilding And Engineering Limited | Apparatus for providing an electrical generator with a constant rotational speed from a variable speed input |
| CN201106525Y (en) * | 2007-08-27 | 2008-08-27 | 上海瑞仁国际贸易有限公司 | Wind generator set with automatic control constant speed step-up gear |
| JP2010031673A (en) * | 2008-07-25 | 2010-02-12 | Apm Corp | Wind power generation system |
| CN102120424A (en) * | 2010-12-09 | 2011-07-13 | 浙江师范大学 | Controller and control method of eddy-current retarder of combined braking system |
| CN102506017A (en) * | 2011-11-22 | 2012-06-20 | 江麓机电科技有限公司 | Static-pressure differential speed regulation-type main transmission in wind generating set |
| CN104066977A (en) * | 2011-12-20 | 2014-09-24 | 文德浮洛科技有限公司 | Power generating system and hydraulic control system |
| CN102852726A (en) * | 2012-08-29 | 2013-01-02 | 华北电力大学 | Gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on differential mechanism |
| CN103233862A (en) * | 2013-04-09 | 2013-08-07 | 浙江大学 | Stepless speed-up type wind power generation system |
| CN103644279A (en) * | 2013-12-23 | 2014-03-19 | 重庆望江工业有限公司 | Constant-speed output gearbox of wind-power generating set |
| CN103967721A (en) * | 2014-05-23 | 2014-08-06 | 张东升 | Wind generating set |
| CN105114347A (en) * | 2015-08-14 | 2015-12-02 | 浙江迪野农业装备有限公司 | Electric power test system for agricultural fan |
Non-Patent Citations (4)
| Title |
|---|
| 刘林 ; 麦云飞 ; 宁李谱 ; .兆瓦级风力发电机组电动变桨距控制系统设计.机械制造.2008,(09),19-22. * |
| 王迪 ; 常山 ; 杨龙 ; .海上风力发电液力调速控制系统分析.舰船科学技术.2018,(第21期),86-91. * |
| 芮晓明 ; 谢鲁冰 ; 高学伟 ; 修长开 ; .差动调速型风力发电机组并网控制研究.自动化仪表.2019,(12),39-44. * |
| 赵迎生 ; 赵又群 ; 魏超 ; .汽车联合制动系统制动力分配系数优化.农业机械学报.2009,(第10期),14-17. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113389859A (en) | 2021-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2096300B1 (en) | Method of controlling the tip speed ratio of wind turbine blades | |
| EP3067556B1 (en) | System and method for variable tip-speed-ratio control of a wind turbine | |
| US8217524B2 (en) | Wind turbine generator and blade pitch angle control method thereof | |
| US7952215B2 (en) | Wind turbine generator, wind turbine generator system, and power generation control method of wind turbine generator | |
| US7663260B2 (en) | Method and apparatus for the operation of a wind energy plant in the power-limited operation | |
| EP2784303B1 (en) | Method of operating a wind turbine | |
| CN108488035B (en) | Stall and variable pitch hybrid control method for permanent magnet direct-drive wind generating set | |
| US8154143B2 (en) | Wind energy converter comprising a superposition gear | |
| US8564149B2 (en) | Wave power plant and method for operating the same | |
| US9835134B2 (en) | Method and computing module for determining pitch angle adjustment signals of a wind turbine based on the maximum rotational speed | |
| US20120237346A1 (en) | Methods and systems for alleviating the loads generated in wind turbines by wind asymmetries | |
| JPS62118069A (en) | Method and device for controlling variable-speed wind-force turbine generator | |
| CN1982699A (en) | Method for moments and pitch control as function of rotational speed in a wind turbine | |
| EP2584193A1 (en) | Wind turbine with air density correction of pitch angle | |
| CN101592126B (en) | Method for tracking and controlling wind energy capture of directly driven permanent magnet synchronous wind generating set | |
| KR20170000933A (en) | Pitch control system of wind turbines using time delay estimation and control method thereof | |
| CN105649875A (en) | Variable pitch control method and device of wind generating set | |
| US10294920B2 (en) | Wind turbine and method for operating a wind turbine | |
| WO2018204452A1 (en) | System and method for reducing wind turbine rotor blade loads | |
| CN103835881B (en) | Independent pitch system based on electronic effective damping and change oar method | |
| CN113389859B (en) | Wind generating set prediction type constant speed box system and constant speed control method | |
| CN202768249U (en) | Wind generation set control system based on pneumatic torque calculation model | |
| CN113389860A (en) | Passive constant-speed transmission control system and constant-speed control method for wind generating set | |
| JP2001339995A (en) | Wind turbine power generator output stabilizing device and its method | |
| CN111692039B (en) | Operation control system of double-wind-wheel wind turbine generator set for gas compression transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |