CN115653836B - Novel wind power generation system based on gravity energy storage system - Google Patents
Novel wind power generation system based on gravity energy storage system Download PDFInfo
- Publication number
- CN115653836B CN115653836B CN202211599379.3A CN202211599379A CN115653836B CN 115653836 B CN115653836 B CN 115653836B CN 202211599379 A CN202211599379 A CN 202211599379A CN 115653836 B CN115653836 B CN 115653836B
- Authority
- CN
- China
- Prior art keywords
- energy storage
- shaft
- wind
- winch
- speed
- 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
Images
Classifications
-
- 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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Wind Motors (AREA)
Abstract
The invention disclosesA novel wind power generation system based on a gravity energy storage system relates to the field of wind power generation systems. The invention is located in a speed interval (at the current wind speed)v a1 ,v e1 ) When the gravity energy storage device is in the energy release mode, an energy release instruction and a wind generating set operation instruction are sent out, so that the gravity energy storage device works in the energy release mode, and meanwhile, the wind generating set works; when the current wind speed is in the speed interval [ 2 ]v e1 ,v e2 ]When the wind turbine is in the working state, a gravity energy storage stopping instruction and a wind turbine running instruction are sent out, so that the gravity energy storage device stops running, and meanwhile, the wind turbine works; at the current wind speed in the speed interval (v e2 ,v a2 ) And when the gravity energy storage device works, the wind generating set works at the same time. The wind power generation system can store wind energy, and can work in a larger wind speed range, so that the power generation efficiency is improved.
Description
Technical Field
The invention relates to the field of wind power generation systems, in particular to a novel wind power generation system based on a gravity energy storage system.
Background
In China, to achieve the aim of 'double carbon', non-fossil energy must be vigorously developed to promote the use mode of green energy, and wind energy is more and more concerned by people as clean energy, so that new energy represented by wind power generation is a necessary direction for development. Wind power generation is greatly influenced by natural conditions, has intermittence, volatility and uncertainty, and is difficult to provide stable power output under the conditions of overhigh and overlow wind speed, so that a new challenge is brought to safe and stable operation of a power grid.
The wind power generation system converts natural wind energy into electric energy, a minimum working wind speed, namely a cut-in wind speed, and a maximum working wind speed, namely a cut-out wind speed, are required when a wind turbine generator works, the wind turbine generator cannot normally work once the wind speed is lower than the cut-in wind speed, and the wind turbine generator needs to stop running once the wind speed exceeds the cut-out wind speed based on the consideration of factors such as material strength of a tower barrel and blades of a blade, so that the normal running wind speed of the wind turbine generator is required to be between the cut-in wind speed and the cut-out wind speed.
In order to solve the problems that a wind turbine generator is greatly influenced by the wind speed and is difficult to provide stable power output in the prior art, the technical personnel in the field are dedicated to developing a novel wind power generation system.
Disclosure of Invention
In view of the above defects in the prior art, the present invention provides a novel wind power generation system based on a gravity energy storage system, which not only can store wind energy, but also can enable the wind power generation system to work in a wider wind speed range, and improve the power generation efficiency.
In order to achieve the purpose, the invention provides a novel wind power generation system based on a gravity energy storage system, which comprises a wind turbine generator, a gravity energy storage device and a central processing unit, and is characterized in that: the central processing unit includes:
a speed interval determination module for determining a speed interval to which the current wind speed belongs, wherein the speed interval includes a first speed interval (A)v a1 , v e1 ) And the second speed interval [ 2 ]v e1 , v e2 ]And a third speed interval (v e2 , v a2 ) (ii) a Whereinv a1 The wind speed is started for the gravity energy storage device,v e1 in order to cut into the wind speed,v e2 in order to cut out the wind speed,v a2 the wind speed of the gravity energy storage device is stopped, and the wind speed of the gravity energy storage device is not less than 0v a1 < cut-in wind speedv e1 Cut-out wind speedv e2 < stopping wind speed of gravity energy storage devicev a2 ；
A control command generation module for generating a control command when the current wind speed is in a first speed interval (v a1 , v e1 ) When the gravity energy storage device is in the normal state, generating an energy release instruction of the gravity energy storage device and an operation instruction of the wind turbine generator set, enabling the gravity energy storage device to work in an energy release mode, and enabling the wind turbine generator set to operate; at the second speed at the current wind speedSection [ 2 ]v e1 , v e2 ]When the wind power generation set is started, generating a gravity energy storage device stopping instruction and a wind power generation set operating instruction to stop the gravity energy storage device and simultaneously operate the wind power generation set; in a third speed interval (at which the current wind speed isv e2 , v a2 ) And when the gravity energy storage device works in the energy storage mode, the wind turbine generator runs.
Further, the wind turbine generator comprises a blade assembly, a main shaft, a power shaft and a generator which are connected in sequence; the gravity energy storage device comprises a winch, a winch shaft, a hinge and a heavy block, wherein the winch shaft drives the winch to rotate, one end of the hinge is fixed on the winch, and the other end of the hinge is connected with the heavy block; the gravity energy storage device is connected between the main shaft and the power shaft through a mode switching device, and the mode switching device comprises:
the reversing assembly is used for unifying the rotation directions of the main shaft, the winch and the power shaft;
and the clutch component is used for realizing full linkage and separation of the winch, the main shaft and the power shaft.
Further, the gravity energy storage device works in an energy release mode, and meanwhile, the running process of the wind turbine generator set comprises the following steps:
the clutch component enables the winch, the main shaft and the power shaft to be in a full linkage state; main shaft passing through blade assembly at rotating speedv l Rotating, the weight descends and drives the winch to rotate at the same time through the hingev s Rotating at a rotational speed of the power shaftv l +v s ；
The gravity energy storage device stops running, and the running process of the wind turbine generator set comprises the following steps:
the clutch component enables the winch to be in a separation state with the main shaft and the power shaft, and the gravity energy storage device is separated from the wind power generation component; the blade assembly sequentially drives the main shaft and the power shaft to rotate through wind power, so that the generator generates electricity;
the gravity energy storage device works in an energy storage mode, and meanwhile, the running process of the wind turbine generator further comprises the following steps:
the clutch component enables the winch, the main shaft and the power shaft to be in a full linkage state; the blade assembly drives the main shaft to rotate at a rotating speedv h Rotating while the main shaft drives the capstan at a rotating speed through the mode switching devicev c Rotating at a rotational speed of the power shaftv h -v c 。
Furthermore, the reversing assembly comprises a first gear reverser and a second gear reverser, the clutch assembly is a winch clutch, the first gear reverser is located between the main shaft and the winch shaft, the second gear reverser is installed between the winch shaft and the power shaft, the winch is sleeved outside the winch shaft, and the winch clutch is installed between the winch and the winch shaft.
Furthermore, the mode switching device further comprises a driving shaft, the reversing assembly comprises an energy releasing gear box and an energy storing gear box, the clutch assembly comprises a first energy releasing clutch, a second energy releasing clutch, a first energy storing clutch and a second energy storing clutch, the main shaft is connected with the power shaft through the driving shaft, the driving shaft is in transmission connection with the winch shaft through the energy releasing gear box and the energy storing gear box, the first energy releasing clutch is installed between the driving shaft and the energy releasing gear box, the second energy releasing clutch is installed between the winch shaft and the energy releasing gear box, the first energy storing clutch is installed between the driving shaft and the energy storing gear box, and the second energy storing clutch is installed between the winch shaft and the energy storing gear box. Energy releasing gear box energy storage gear box.
Furthermore, a gearbox is arranged at the output end of the main shaft, and a speed increasing box is arranged at the input end of the power shaft.
Furthermore, a main shaft side clutch is arranged at the output end of the main shaft.
Furthermore, a power shaft side clutch is arranged at the input end of the power shaft.
Further, the gravity energy storage device comprises a positioning track which is vertically arranged, and the weight block moves up and down in the positioning track.
Further, the novel wind power generation system based on the gravity energy storage system further comprises:
the information acquisition unit comprises a wind speed acquisition module, a wind direction acquisition module, a wind turbine generator parameter acquisition module and a heavy block information acquisition module and is used for acquiring current wind speed data, wind direction data, wind turbine generator operation data and heavy block operation data;
the data processor is used for processing and correcting the data collected by the information acquisition unit;
and the data memory is used for storing the data received by the central processing unit and the control instruction sent out.
Compared with the prior art, the invention has the following technical effects:
1. the wind power generation system of the invention has the original cut-in wind speed and cut-out wind speedv e1 , v e2 ]On the basis of the range increasev a1 , v e1 ) And (a)v e2 , v a2 ) Two wind speed intervals of (v a1 , v e1 ) And (a)v e2 , v a2 ) The wind turbine generator set has the advantages that the energy is stored and released through the operation of the gravity energy storage device in the two wind speed intervals, the influence of overlarge and undersize wind speeds on the wind turbine generator set is reduced, and the working wind speed range of the wind turbine generator set is expanded.
2. When the wind speed is less than the cut-in wind speed, the rotating speed generated by the rotation of the winch shaft driven by the gravity energy storage device through the energy release process of the gravity energy storage device is superposed with the rotating speed of the main shaft driven by the wind power, so that the rotating speed transmitted to the power shaft is increased to enable the rotating speed of the power shaft to reach the working rotating speed range of the generator to drive the generator to work, and the wind energy and the gravitational potential energy are converted into electric energy to realize power generation; on the contrary, when the wind speed is higher than the cut-out wind speed, the traditional wind turbine generator still needs to be stopped, and when the wind speed is higher than the cut-out wind speed, the blade under the action of high-speed wind power is usedThe piece assembly drives the capstan shaft to rotate, the rotating speed of the wind energy transmission value main shaft is negatively superposed with the rotating speed consumed when the gravity energy storage device stores energy to do work, so that the rotating speed transmitted to the power shaft is reduced to reach the working rotating speed range of the generator, namely, one part of wind energy does work to rotate the capstan shaft, the other part of the wind energy is used for driving the power shaft to rotate to generate electricity, and the wind turbine generator is characterized in thatv a1 , v e1 ) And (a)v e2 , v a2 ) And the two wind speed intervals can both keep power generation synchronization.
3. The invention is improved on the basis of the wind turbine generator in the prior art, is realized under the condition of not changing the parameters of the existing wind turbine generator, and has simple structure and convenient control.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic structural diagram of a novel wind power generation system based on a gravity energy storage system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a wind turbine generator and a gravity energy storage device according to embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of the nacelle of FIG. 2;
FIG. 4 is a schematic diagram illustrating a comparison between an operating wind speed range of a wind turbine generator and an operating wind speed range of an original wind turbine generator according to an embodiment of the present invention;
FIG. 5 is a schematic view of the operation of the novel wind power generation system based on the gravity energy storage system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a wind turbine generator, a gravity energy storage device, and a switching device according to embodiment 2 of the present invention;
fig. 7 is a schematic structural diagram of a wind turbine generator, a gravity energy storage device, and a switching device according to embodiment 3 of the present invention;
fig. 8 is a schematic structural diagram of a wind turbine generator, a gravity energy storage device, and a switching device according to embodiment 4 of the present invention;
fig. 9 is a schematic structural diagram of a wind turbine generator, a gravity energy storage device, and a switching device according to embodiment 5 of the present invention.
In the figure, 1-1, a hub, 1-2, blades, 1-3, an impeller shaft, 1-4, a cabin, 1-5, a main shaft, 1-6, a power shaft, 1-7, a generator, 1-8, a tower, 1-9, a protective device, 1-10, a damping device, 1-11, the ground, 1-12, a weight cabin, 1-13, a coupler, 1-14, a gearbox, 1-15, a speed increasing box, 1-16, a main shaft side clutch, 1-17 and a power shaft side clutch;
2-1 parts of a winch, 2-2 parts of a winch shaft, 2-3 parts of a hinge, 2-4 parts of a weight, 2-5 parts of a positioning track;
3-1, a first gear reverser, 3-2, a second gear reverser, 3-3 and a winch clutch; 3-4 parts of driving shaft, 3-5 parts of energy releasing gear box, 3-6 parts of energy storing gear box, 3-7 parts of first energy releasing clutch, 3-8 parts of second energy releasing clutch, 3-9 parts of first energy storing clutch, 3-10 parts of second energy storing clutch;
4-1, a wind direction acquisition module, 4-2 and a wind speed acquisition module.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of each component in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Some exemplary embodiments of the invention have been described for illustrative purposes, and it is to be understood that the invention may be practiced otherwise than as specifically described.
As shown in fig. 1, the invention provides a novel wind power generation system based on a gravity energy storage system, which comprises a wind turbine generator, a gravity energy storage device, a mode switching device and a comprehensive management system.
As shown in fig. 2 and 3, the wind turbine generator comprises a blade assembly, a nacelle 1-4 and a tower 1-8, the nacelle 1-4 is located at the top end of the tower 1-8, the blade assembly comprises a blade 1-2, a hub 1-1 and an impeller shaft 1-3, a main shaft 1-5, a power shaft 1-6 and a generator 1-7 are arranged in the nacelle 1-4, the blade 1-2 is mounted on the hub 1-1, one end of the impeller shaft 1-3 is connected with the hub 1-1, the other end of the impeller shaft 1-3 extends into the nacelle 1-4 and is connected with the main shaft 1-5 through a coupling 1-13, and the main shaft 1-5 is connected with the generator 1-7 through the power shaft 1-6.
The gravity energy storage device comprises a winch 2-1, a winch shaft 2-2, a hinge 2-3 and a weight 2-4, one end of the winch shaft is connected with a main shaft 1-5, the other end of the winch shaft is connected with a power shaft 1-6, the winch 2-1 is sleeved outside the winch shaft, one end of the hinge 2-3 is fixed on the winch 2-1, the other end of the hinge 2-3 is connected with the weight 2-4, in an energy storage mode, the winch 2-1 rotates to enable the hinge 2-3 to be wound on the winch 2-1 gradually, and the weight 2-4 rises under the action of the hinge 2-3 to realize energy storage; in the energy release mode, the weight 2-4 moves downwards under the action of gravity, at the moment, the weight 2-4 drives the winch 2-1 to rotate through the hinge 2-3, and the winch 2-1 rotates to drive the engine to generate power, so that the stored energy is released.
When the device at the front end of the power shaft 1-6 breaks down in the operation process, the generator 1-7 at the other end of the power shaft is likely to be damaged, in a specific embodiment, a power shaft side clutch 1-17 is arranged between a speed increasing box 1-15 and the power shaft 1-6, and when the component at the front part of the power shaft 1-6 breaks down, the power shaft side clutch 1-17 is in a non-linkage state, so that the power shaft 1-6 is separated from a winch shaft 2-2 to prevent the generator 1-7 from being damaged.
In a specific embodiment, the weight blocks 2-4 and the hinges 2-3 are positioned in the towers 1-8 of the wind turbine generator set, so that the height space of the towers 1-8 is fully utilized; because the weight of the weight 2-4 is large, the motion track of the weight 2-4 may swing due to the influence of other external factors such as mechanical vibration during the ascending and descending processes, so that a great potential safety hazard exists, in a specific embodiment, the hinge 2-3 is provided with the positioning track 2-5, and the swing range of the weight 2-4 during the ascending and descending processes is limited by the positioning track 2-5, so that the safety of the system is improved.
The gravity energy storage device achieves ascending and descending of the heavy blocks 2-4 through the hinges 2-3, the heavy blocks 2-4 and the like are located inside the tower barrels 1-8, when the wind speed is smaller than the cut-in wind speed, the heavy blocks 2-4 descend fast under the action of gravity, or the hinges 2-3 break and lose control due to abrasion, aging and the like, in order to prevent the heavy blocks 2-4 from colliding with the inner walls of the tower barrels 1-8 in the process of fast descending, the bottom end inside the tower barrels 1-8 is provided with the protection devices 1-9, the positions of the protection devices 1-9 correspond to the heavy blocks 2-4, and when the heavy blocks 2-4 descend to the same height as the protection devices 1-9, the heavy blocks collide with the ground 1-11.
The cylinder walls of the protective devices 1-9 can be formed by enclosing high-toughness metal plates, when the protective devices are impacted by external force, the metal plates can be deformed generally, but are not easy to damage and splash, and when the protective devices need to be repaired or replaced, the protective devices are convenient to detach.
The maintenance ladder is arranged in the tower barrels 1-8, maintenance personnel can check the wind turbine generator conveniently through the maintenance ladder, rising or falling of the heavy blocks 2-4 in the tower barrels 1-8 is controlled according to the wind speed, so that the situation that the heavy blocks 2-4 rise or fall possibly exists, the maintenance personnel enter the tower barrels 1-8, therefore, in consideration of improving personal safety of the maintenance personnel, a distance is reserved between the outer wall of one side, close to the maintenance ladder, of the protection device 1-9 and the maintenance ladder, therefore, the heavy blocks 2-4 fall into the protection device 1-9, certain protection effect can be achieved for the maintenance personnel, and the maintenance personnel can be reminded of paying attention to the moving situation of the heavy blocks 2-4.
The hinge 2-3 and the heavy block 2-4 are located on one side of the central axis of the tower barrel 1-8, and the access door and the access ladder are located on the opposite side of the heavy block 2-4, so that the distance between the access ladder and the outer wall of the protective device 1-9 is the largest, and the safety performance is the highest.
The damping devices 1-10 are arranged on the ground 1-11 at the bottom ends of the protection devices 1-9, and the damping devices 1-10 absorb a part of gravitational potential energy to reduce the impact of the weights 2-4 on the inner walls of the protection devices 1-9, the ground 1-11 and the hinges 2-3. The damping devices 1-10 comprise an upper damping plate and a lower damping plate, and damping springs are arranged between the upper damping plate and the lower damping plate.
The weight cabin is characterized in that the ground 1-11 at the bottom end of the protective device 1-9 is sunken to form a weight cabin 1-12, the weight cabin 1-12 is of a hollow cylinder structure with an open upper end, when a hinge 2-3 is broken or out of control causes a weight 2-4 to fall, the weight 2-4 falls into the protective device 1-9, and falls into the weight cabin 1-12 after breaking an upper damping plate and a lower damping plate, so that the inner wall of the tower barrel 1-8 cannot be damaged.
The mode switching device connects the gravity energy storage device in the wind turbine generator system in a coupling manner, and is used for realizing the switching of the gravity energy storage device in an energy storage mode, an energy release mode and a gravity energy storage device switching mode, and the mode switching device comprises:
the reversing assembly is used for unifying the rotation directions of the main shaft, the winch and the power shaft; and the clutch component is used for realizing full linkage and separation of the winch, the main shaft and the power shaft.
Example 1:
because the rotation direction of the blades 1-2 in the wind turbine generator is usually fixed to be clockwise, the rotation direction of the winch 2-1 in the energy storage and release processes of the gravity energy storage device is opposite, in order to integrate the winch shaft into the structure of the wind turbine generator, as shown in fig. 2 and 3, the reversing assembly of the embodiment comprises a first gear reverser 3-1 and a second gear reverser 3-2, the clutch assembly is a winch clutch 3-3, the first gear reverser is positioned between the main shaft and the winch shaft, the second gear reverser is installed between the winch shaft and the power shaft, the winch clutch 3-3 is installed between the winch and the winch shaft, the linkage of the main shaft 1-5, the winch shaft and the power shaft 1-6 is realized through the first gear reverser 3-1 and the second gear reverser 3-2, and the linkage or separation of the winch 2-1 and the winch shaft is realized through the winch clutch 3-3.
Because the difference between the rotating speed of the blades 1-2 of the wind turbine generator and the rotating speed of the generators 1-7 is large, in order to match the rotating speed of the blades 1-2 with the rotating speed of the generators 1-7, in a specific embodiment, a gearbox 1-14 is arranged between a main shaft 1-5 and a winch shaft, a speed increasing box 1-15 is arranged between the winch shaft and a power shaft 1-6, and the rotating speed transmitted to the power shaft 1-6 is within the working rotating speed range of the generators through the actions of the gearbox 1-14 and the speed increasing box 1-15. In the embodiment, one end of a first gear reverser 3-1 is connected with a main shaft 1-5, the other end of the first gear reverser is connected with a gearbox 1-14, the output end of the gearbox 1-14 is connected with a winch shaft through a main shaft side clutch 1-16, the winch shaft is connected with a winch 2-1 through a winch clutch 3-3, the winch shaft is connected with a speed increasing box through a second gear reverser 3-2, and the output end of the speed increasing box is connected with a power shaft 1-6.
The gravitational energy storage device further comprises locking means to lock the winch 2-1 or the hinge 2-3 in a position to keep the weight 2-4 at any height.
When the wind turbine generator cannot run, a shutdown operation is required, in a specific embodiment, a main shaft side clutch 1-16 is set at the output end of a main shaft 1-5, when the shutdown operation is required, the main shaft side clutch 1-16 is in an unlinked state, the main shaft 1-5 is separated from elements such as a winch shaft and a power shaft, and the whole novel wind power generation system is shut down, otherwise, when the shutdown operation is not required, the main shaft side clutch 1-16 is in a fully linked state, and power transmission of the main shaft 1-5, the winch shaft 2-2, the power shaft 1-6 and the like is realized.
In the energy release mode, at the moment, the external natural wind is smaller than the cut-in wind speed, the first gear reverser 3-1 enables the rotation direction of the winch shaft to be opposite to that of the main shaft 1-5, the second gear reverser 3-2 enables the rotation direction of the winch shaft to be opposite to that of the power shaft 1-6, the main shaft side clutch 1-16, the winch clutch 3-3 and the power shaft side clutch 1-17 are all in a full linkage state, when the wind power forms acting force on the blades 1-2, the blades 1-2 drive the hub 1-1 to rotate in the clockwise direction, and the hub 1-1 drives the main shaft 1-5 to rotate in the clockwise direction at the rotating speed through the impeller shaft 1-3v l Rotating, under the action of the first gear commutator 3-1, the winch shaft rotates in the counterclockwise direction at a rotating speedv l Rotating, simultaneously, under the action of the first gear reverser 3-1, the weight 2-4 descends under the action of gravity, and the weight 2-4 drags the hinge 2-3 to further drive the winch 2-1 to rotate at a rotating speed in a counterclockwise directionv s The rotation releases energy, and the rotating speed transmitted to the power shaft is enabled to be equal to the rotating speed of the power shaft under the action of the second gear commutator 3-2v l +v s In the mode, under the combined action of wind energy and weight descending, the winch shaft reaches the rotating speed of the load generator 1-7, and under the action of the speed increasing box 1-15, the rotating speed of the power shaft 1-6 is increased to realize the normal operation of the generator 1-7.
When the weights 2-4 are lowered to the lowest position and no energy can be released at the moment, the main shaft side clutches 1-16 are controlled to be in an unlinked state, and the whole novel wind power generation system is stopped.
In the energy storage mode, at the moment, the external natural wind speed is greater than the cut-out wind speed, the first gear commutator 3-1 and the second gear commutator 3-2 do not change the rotation direction, and the main shaft side clutch 1-16 and the winch clutch 3-3 are in a full linkage state; when wind force acts on the blades 1-2, the blades 1-2 drive the hub 1-1 to rotate clockwise, and the hub 1-1 drives the main shaft 1-5 to rotate at a rotating speed in the clockwise direction through the impeller shaft 1-3v h The main shaft 1-5 drives the winch shaft 2-2 to rotate, and the winch 2-1 rotates at a rotating speedv c The hinge 2-3 is gradually wound on the winch 2-1 along with the rotation of the winch, and the weight 2-4 rises at the moment to finish the process of converting wind energy into gravitational potential energy and storing the gravitational potential energy, so that the rotating speed transmitted to the power shaft is equal tov h -v c The rotating speed transmitted to the power shaft is adjusted to be within the working rotating speed range of the generator through the gravity energy storage device, so that the generators 1-7 run to generate electricity, and wind energy is converted into electric energy;
when the weight 2-4 is positioned at the highest point of the hinge 2-3, the gravity energy storage device cannot store energy again, the main shaft side clutches 1-16 are controlled to be in an unlinked state, and the whole novel wind power generation system is stopped.
In a gravity energy storage mode stop mode, the first gear commutator 3-1 and the second gear commutator 3-2 do not change the rotating speed direction, the main shaft side clutch 1-16 is in a full linkage state, the winch clutch 3-3 is in a non-linkage state, as the winch clutch 3-3 is in the non-linkage state, the winch 2-1 is separated from the winch shaft, and the winch shaft is not added into the power generation process of the wind driven generator 1-7 group any more, and the winch shaft in the mode is only used as a connecting structure of the main shaft 1-5 and the power shaft 1-6; when wind power acts on the blades 1-2, the blades 1-2 drive the hub 1-1 to rotate in a clockwise direction, the hub 1-1 drives the main shaft 1-5 to rotate in the clockwise direction through the impeller shaft 1-3, and the wind speed is converted into the working rotating speed of the generator 1-7 under the action of the gearbox 1-14 and the speed increasing box 1-15, so that the normal operation of the generator 1-7 is realized, and the wind energy is converted into the electric energy.
Therefore, in the process of energy release and energy storage, the gravity energy storage device not only can realize the functions of releasing and storing electric energy, but also can keep the normal operation of the generators 1-7, and broaden the speed range of the operation of the wind turbine generator.
The integrated management system comprises an information acquisition unit, a data processor, a data memory and a central processing unit; the information acquisition unit comprises a wind speed acquisition module 4-2, a wind direction acquisition module 4-1, a wind turbine generator parameter acquisition module and a heavy block cabin information acquisition module;
the wind speed acquisition module 4-2 is used for acquiring current wind speed information, the wind speed is a main influence factor on the wind power generation assembly, the power generation effect of the wind power generation assembly mainly depends on the wind speed, the current wind speed information is acquired through the wind speed acquisition module 4-2, and a corresponding control instruction is generated through the central processing unit, so that the wind power generation system executes the corresponding instruction.
The wind direction acquisition module 4-1 is used for acquiring real-time wind direction information and adjusting the orientation of the blades 1-2 according to the wind direction, so that the impeller shaft 1-3 always rotates in the same direction.
The wind turbine generator parameter acquisition module is used for acquiring related parameters of the operation of the wind turbine generator and detecting the operation condition of the wind power generation assembly in real time.
The weight cabin information acquisition module is used for acquiring lifting speed information of the weights 2-4 and tension information received by the hinges 2-3, monitoring the operation condition of the gravity energy storage device in real time and guaranteeing safe and smooth operation of the gravity energy storage device.
The data storage is used for storing the data received by the central controller and the sent instructions, and provides data support for evaluation and improvement of the novel wind power generation system.
And the data processor is used for processing and correcting the data collected by the information acquisition unit.
The central processing unit generates different control instructions according to the current wind speed and controls the operation of the wind power assembly and the gravity energy storage device, and comprises a speed interval judgment module and a control instruction generation module;
the speed interval judging module is used for judging a speed interval to which the current wind speed belongs, and the speed interval comprises a first speed interval (A)v a1 , v e1 ) And the second speed interval [ 2 ]v e1 , v e2 ]And a third speed interval (v e2 , v a2 ) (ii) a Whereinv a1 The wind speed is started for the gravity energy storage device,v e1 in order to cut into the wind speed,v e2 in order to cut out the wind speed,v a2 stopping the wind speed for the gravity energy storage device, and starting the wind speed for the gravity energy storage device with the wind speed being less than or equal to 0v a1 < cut-in wind speedv e1 Cut-out wind speedv e2 < stopping wind speed of gravity energy storage devicev a2 ；
Starting wind speed of gravity energy storage devicev a1 Comprises the following steps:
v a 1 =v e1 -v max1 ；
wherein the content of the first and second substances,v e1 minimum rotational speed for the capstan shaft to transfer to the power shaft to operate the generator, i.e. the wind cut-in speed, v max1 The maximum rotational speed that can be provided to the winch shaft for weight reduction;
wind stopping speed of gravity energy storage devicev a2 Comprises the following steps:
v a 2 =v max1 +v min1 ；
v e2 the maximum rotating speed of the generator, namely the cut-out wind speed, is achieved by transmitting the winch shaft to the power shaft,v max2 the maximum rotating speed for the winch shaft to drive the heavy object to rise;
starting wind speed of gravity energy storage devicev a1 Stopping wind speed of gravity energy storage devicev a2 Cut-in wind speedv e1 And cut out of wind speedv e2 The wind speed range of the wind power generation system is divided into three speed intervals, namely a first wind speed interval (A)v a1 ,v e1 ) And the second wind speed interval [ 2 ]v e1 , v e2 ]And a third interval of wind speeds: (v e2 , v a2 ) Wherein the second wind speed interval [ 2 ]v e1 , v e2 ]In the working wind speed interval of the wind turbine generator, the wind speed in the first wind speed interval is smaller than the cut-in wind speed and is defined as a low wind speed interval, the wind speed in the third wind speed interval is larger than the cut-out wind speed and is defined as a high wind speed interval, and as shown in fig. 4, the low wind speed interval and the high wind speed interval are increased on the basis of the existing wind turbine generator operating wind speed range, and the operating wind speed range of a wind power generation system is increased.
The control instruction generation module is used for generating a corresponding control instruction according to the current wind speed;
in the first speed interval at the current wind speed (v a1 , v e1 ) When the gravity energy storage device works, generating an energy release instruction of the gravity energy storage device and an operation instruction of the wind generating set, so that the gravity energy storage device works in an energy release mode, and the wind generating set operates;
when the current wind speed is in the second speed intervalv e1 , v e2 ]When the gravity energy storage device is in the internal state, a gravity energy storage device stop instruction and a wind generating set operation instruction are generatedStopping the gravity energy storage device and simultaneously operating the wind turbine;
in the third speed interval (at the current wind speed:)v e2 , v a2 ) And when the gravity energy storage device works in the energy storage mode, the wind turbine generator runs.
As shown in FIG. 5, in one embodiment, the workflow of the novel wind power generation system includes:
s1, judging whether the current wind speed falls in the working wind speed interval of the wind power plantv e1 , v e2 ]If yes, executing step S2; if not, executing the step S3;
s2, the gravity energy storage device executes a stop instruction, meanwhile, the wind turbine generator executes an operation instruction, the gravity energy storage stop instruction controls the winch clutch 3-3 to separate the winch 2-1 from the winch shaft, at the moment, the winch 2-1, the hinge 2-3 and the weight block 2-4 are separated from the wind turbine generator, the first gear reverser 3-1 and the second gear reverser 3-2 enable the rotation directions of the main shaft 1-5, the winch shaft and the power shaft 1-6 to be the same, and the wind turbine generator normally operates to convert wind energy into electric energy; then executing step S1;
s3, starting the gravity energy storage device to operate, enabling the winch clutch to be in a full linkage state, enabling the winch 2-1 to be connected with the winch shaft under the action of the winch clutch 3-3, and enabling the winch 2-1, the hinge 2-3 and the weight 2-4 to be connected into the wind turbine generator; judging whether the current wind speed falls in the speed interval (v a1 , v e1 ) If yes, executing step S4, otherwise, executing step S5;
s4, the gravity energy storage device executes an energy releasing instruction, meanwhile, the generator set executes an operation instruction, the first gear commutator 3-1 enables the rotation direction of the winch shaft to be opposite to that of the main shaft 1-5, the second gear commutator enables the rotation direction of the power shaft 1-6 to be opposite to that of the winch shaft, namely the main shaft 1-5 rotates clockwise, the winch shaft rotates anticlockwise under the action of the first gear commutator, and the power shaft 1-6 rotates clockwise under the action of the second gear commutator 3-2; the locking device is unlocked, the weight 2-4 falls under the action of gravity, the winch 2-1 is driven to rotate through the hinge 2-3, the rotating speed of the power shaft 1-6 is increased under the action of the speed increasing box 1-15 so as to realize the normal operation of the generator 1-7, the generator 1-7 is driven to work through the power shaft 1-6, and wind energy and gravitational potential energy are simultaneously converted into electric energy; then executing step S1;
when the gravity energy storage device is in an energy release mode, when the weights 2-4 are lowered to the lowest position and no energy can be released at the moment, the main shaft side clutch is converted into a non-linkage state, the winch shaft is separated from the main shaft, the subsequent part of the winch shaft does not perform power generation operation any more, and the whole novel wind power generation system is stopped;
s5, judging whether the current wind speed falls in a speed interval (v e2 , v a2 ) If the gravity energy storage device executes an energy storage instruction, the generator set executes an operation instruction, and if the gravity energy storage device does not execute the energy storage instruction, the main shaft side clutch is in an unlinked state, and the whole novel wind power generation system is stopped;
the gravity energy storage device executes an energy storage instruction, the generator set executes an operation instruction, so that the main shaft side clutch 1-16, the winch clutch 3-3 and the power shaft side clutch 1-17 are all in a full linkage state, and the first gear reverser 3-1 and the second gear reverser 3-2 do not change the rotation direction; wind power acts on blades 1-2, the blades 1-2 drive a hub 1-1 to rotate, the hub 1-1 drives a main shaft 1-5 to rotate through an impeller shaft 1-3, the main shaft 1-5 drives a winch shaft 2-2 to rotate through a gearbox 1-14, so that the winch 2-1 rotates, a hinge 2-3 is wound on the winch 2-1 step by step, a weight 2-4 rises to convert wind energy into gravitational potential energy to be stored, meanwhile, the winch shaft drives a power shaft 1-6 to rotate through a speed increasing box 1-15 to enable a generator 1-7 to normally operate, and then the step S1 is executed;
when the weight 2-4 is located at the highest point of the hinge 2-3, the gravity energy storage device cannot store energy again, the main shaft side clutch 1-16 is in an unlinked state, the winch shaft is separated from the main shaft, the subsequent part of the winch shaft does not perform power generation operation any more, and the whole novel wind power generation system stops.
Example 2:
as shown in fig. 6, in the present embodiment, the mode switching device includes a second gear reverser 3-2, the clutch assembly is a winch clutch 3-3, and the first gear reverser is located between the main shaft and the winch shaft; in an energy release mode, a main shaft 1-5 is separated from a winch shaft 2-2 through a main shaft side clutch 1-16, the winch shaft 2-2 is connected with a generator 1-7 through a power shaft 1-6 at the moment, a weight 2-4 descends to drive the winch 2-1 to rotate, and the winch shaft 2-2 drives the power shaft 1-6 to rotate to realize the power generation of the generator 1-7; in an energy storage mode, a main shaft 1-5 is connected with a winch shaft 2-2 through a main shaft side clutch, meanwhile, the winch 2-1 is kept connected with the winch shaft 2-2 through a winch clutch 3-3, when a blade 1-2 drives the main shaft 1-5 to rotate under the action of natural wind, the winch shaft 2-2 connected with the main shaft 1-5 rotates, a weight 2-4 is lifted through winding of a hinge 2-3 in the rotation process of the winch 2-1, and meanwhile, the rotation of the winch shaft 2-2 enables a power shaft 1-6 to rotate to drive a generator 1-7 to generate electricity; when the gravity energy storage device stops running, the winch shaft 2-2 is connected with the main shaft 1-5 through the main shaft side clutch 1-16 at the moment, the winch 2-1 is separated from the winch shaft 2-2 through the winch clutch 3-3, and the blade 1-2 drives the main shaft 1-5 to rotate under the action of natural wind, and then the power shaft 1-6 connected with the main shaft 1-5 through the winch shaft 2-2 rotates to drive the wind driven generator 1-7 to run.
Example 3:
according to different wind turbine generator system power conditions, the gravity energy storage device of this embodiment can be a plurality of, can include a plurality of capstan winch 2-1, a plurality of capstan winch axle 2-2 for improve concrete energy transfer efficiency. Based on the consideration of installation space, in specific application, the driving shafts of the multiple groups of mode switching devices can be connected with one input and multiple outputs through the existing conversion gear box, and are connected with the power shaft in a multi-input and one output mode. As shown in fig. 7, the gravity energy storage device includes two sets, and correspondingly includes two sets of mode switching devices, and the gravity energy storage device and the mode switching devices form a unit, as shown in fig. 7, the gravity energy storage device includes units a and B, the two sets of mode switching devices are connected with the main shaft and the power shaft through relay gear boxes C and D, or are connected with the main shaft and the power shaft, respectively, and the relay gear boxes may directly adopt existing gear box structures, and are not described herein again. In the working process, the two groups of gravity energy storage devices can store and release energy simultaneously as required, and also can alternately store and release energy for the two groups of gravity energy storage devices, so that the wind turbine generator can stably run, and stable power output is ensured.
Example 4:
in another embodiment, as shown in fig. 8, the mode switching device comprises a driving shaft 3-4, the reversing assembly comprises an energy releasing gear box 3-5 and an energy storing gear box 3-6, the clutch assembly comprises a first energy releasing clutch 3-7, a second energy releasing clutch 3-8, a first energy storing clutch 3-9 and a second energy storing clutch 3-10, the driving shaft 3-4 and the winch shaft 2-2 realize power transmission through the energy releasing gear box 3-5 and the energy storing gear box 3-6, and the energy releasing gear box 3-5 and the energy storing gear box 3-6 can adopt a gear reversing device in the prior art.
As shown in the figure, the driving shaft 3-4 is installed between the main shaft 1-5 and the power shaft 1-6, the driving shaft 3-4 and the winch shaft 2-2 are in transmission connection through the energy releasing gear box 3-5 and the energy storing gear box 3-6, the first energy releasing clutch 3-7 is installed between the driving shaft 3-4 and the energy releasing gear box 3-5, the second energy releasing clutch 3-8 is installed between the winch shaft 2-2 and the energy releasing gear box 3-5, the first energy storing clutch 3-9 is installed between the driving shaft 3-4 and the energy storing gear box 3-6, and the second energy storing clutch 3-10 is installed between the winch shaft 2-2 and the energy storing gear box 3-6. When the first energy release clutch 3-7 and the second energy release clutch 3-8 are in a linkage state, the driving shaft 3-4 and the winch shaft 2-2 synchronously rotate through the energy release gear box 3-5, and conversely, when the first energy release clutch 3-7 and the second energy release clutch 3-8 are in a non-linkage state, the driving shaft 3-4 and the winch shaft 2-2 are disengaged; when the first energy storage clutch 3-9 and the second energy storage clutch 3-10 are in a linkage state, the driving shaft 3-4 and the winch shaft 2-2 synchronously rotate through the energy storage gear box 3-6, and conversely, when the first energy storage clutch 3-9 and the second energy storage clutch 3-10 are in a non-linkage state, the driving shaft 3-4 and the winch shaft 2-2 are disengaged;
the blades 1-2 drive the impeller shaft 1-3 to rotate under the action of wind power, and the impeller shaft 1-3 drives the driving shaft 3-4 to rotate at the rotating speed through the main shaft 1-5v l Rotation, with the driving shaft 3-4 acting as a transmission member for wind energy, rotation of the driving shaft 3-4The moving direction is always the same as the rotating direction of the main shafts 1-5;
in the energy release mode, the first energy storage clutch 3-9 and the second energy storage clutch 3-10 are in an un-linkage state, the first energy release clutch 3-7 and the second energy release clutch 3-8 are in a linkage state, and the weight 2-4 drives the winch shaft 2-2 to rotate at a rotating speed through the winch 2-1 in the descending process of the weight 2-4v s The rotating winch shaft 2-2 rotates and is transmitted to the driving shaft 3-4 through the energy releasing gear box 3-5, so that the rotating speed transmitted to the power shaft isv l +v s 。
In the energy storage mode, the first energy release clutch 3-7 and the second energy release clutch 3-8 are in an un-linked state, the energy release gear box is separated from the driving shaft 3-4 and the winch shaft 2-2, the first energy storage clutch 3-9 and the second energy storage clutch are in a linked state, and the impeller shaft 1-3 drives the driving shaft 3-4 to rotate at a rotating speed through the main shaft 1-5v h The rotating power shaft 1-6 drives the capstan shaft 2-2 to rotate at a rotating speed through the energy storage gear box 3-6v c The winch 2-1 rotating synchronously with the winch shaft 2-2 lifts the weight 2-4 through the hinge 2-3, the mechanical energy part of the winch shaft 2-2 rotating is used for lifting the weight 2-4 to do work to realize energy storage, so that the rotating speed transmitted to the power shaft is the same as the rotating speed of the weight 2-4v h -v c In the energy storage mode, the energy source of the winch shaft 2-2 is also wind energy, namely in the energy storage mode, the wind energy is used for driving the generator 1-7 to generate electricity through the main shaft 1-5, the driving shaft 3-4 and the power shaft 1-6 on the one hand, and is used for driving the weight 2-4 to ascend through the winch 2-1 to be converted into gravitational potential energy to be stored on the other hand.
When the gravity energy storage device stops working, the first energy release clutch 3-7, the second energy release clutch 3-8, the first energy storage clutch 3-9 and the second energy storage clutch 3-10 are all in an unlinked state, the winch shaft 2-2 is separated from the driving shaft 3-4 at the moment, the gravity energy storage device is separated from the wind turbine generator, the driving shaft 3-4 is only used as an intermediate component for energy transmission of the wind turbine generator, and the blade assembly sequentially drives the main shaft and the power shaft to rotate through wind power to realize power generation of the generator.
As shown in the figure, the winch 2-1 in the present embodiment is fixed in the center of the winch shaft 2-2, and the energy releasing gear box and the energy storing gear box are respectively located at two sides of the winch 2-1, in practical applications, the positions of the winch 2-1, the energy releasing gear box and the energy storing gear box can be adjusted according to the actual application, for example, the winch can be located at one side of the winch shaft, and the energy releasing gear box and the energy storing gear box are located at the other side of the winch shaft, and in some cases, the winch shaft can be set to be curved based on the installation space.
The winch shaft 2-2 is positioned in the engine room 1-4, the energy release gear box 3-5 and the energy storage gear box 3-6 are usually internally composed of a gear pair, a chain wheel pair and the like, and in order to avoid the influence of the weight 2-4 and the weight of the winch shaft 2-2 on the gear parts, the winch shaft 2-2 can be arranged on the inner wall of the engine room 1-4 through a connecting bearing.
Based on the mode switching device of the above embodiment, the work flow of the novel wind power generation system shown in fig. 5 includes:
s1, judging whether the current wind speed falls in the working wind speed interval of the wind power plantv e1 , v e2 ]If yes, executing step S2; if not, executing the step S3;
s2, the gravity energy storage device executes a stop instruction, and meanwhile the wind turbine generator executes an operation instruction, the gravity energy storage stop instruction enables the first energy release clutch 3-7, the second energy release clutch 3-8, the first energy storage clutch 3-9 and the second energy storage clutch to be in an unassociated state, so that the energy release gear box 3-5 and the energy storage gear box 3-6 are separated from the driving shaft 3-4 and the winch shaft 2-2, the winch shaft 2-2 is also separated from the driving shaft 3-4 at the moment, and the locking device locks the current position of the weight 2-4;
under the operation instruction of the wind turbine generator, the main shaft side clutch 1-16 and the power shaft side clutch 1-17 are in a full linkage state, natural wind drives the impeller shaft 1-3 to rotate clockwise through the blades 1-2, and the rotating impeller shaft 1-3 drives the generator 1-7 to generate electricity through the driving shaft 3-4 and the winch shaft 2-2 which are connected in sequence; then executing step S1;
s3, starting the gravity energy storage device to operate, and judging whether the current wind speed falls in a speed interval (v a1 , v e1 ) If yes, go to step S4, if no,executing the step S5;
s4, the gravity energy storage device executes an energy releasing instruction, and meanwhile, the generator set executes an operation instruction, and the method specifically comprises the following steps:
the energy releasing instruction enables the first energy storing clutch 3-9 and the second energy storing clutch to be in an un-linkage state, the first energy releasing clutch 3-7 and the second energy releasing clutch 3-8 to be in a full linkage state, the energy storing gear box 3-6 is separated from the driving shaft 3-4 and the winch shaft 2-2 at the moment, the winch shaft 2-2 can transmit the rotating speed to the driving shaft 3-4 under the action of the energy releasing gear box 3-5, the locking device is unlocked, the heavy block 2-4 falls under the action of gravity, the winch 2-1 is driven to rotate through the hinge 2-3, the winch shaft 2-2 fixedly connected with the winch 2-1 also rotates, and the winch shaft 2-2 transmits the speed to the driving shaft 3-4 through the energy releasing gear box 3-5 in transmission connection;
under the operation instruction of the wind turbine generator, a main shaft side clutch 1-16 and a power shaft side clutch 1-17 are in a full linkage state, natural wind drives an impeller shaft 1-3 to rotate clockwise through a blade 1-2, the rotating impeller shaft 1-3 drives a generator 1-7 to generate electricity through a driving shaft 3-4 and a winch shaft 2-2 which are sequentially connected, a speed increasing box 1-15 increases the rotating speed of the power shaft 1-6 to realize the normal operation of the generator 1-7, and the power shaft 1-6 drives the generator 1-7 to work, so that wind energy and gravitational potential energy are simultaneously converted into electric energy; then executing step S1;
when the gravity energy storage device is in an energy release mode, when the weights 2-4 are lowered to the lowest position and no energy can be released at the moment, the whole novel wind power generation system is stopped;
s5, judging whether the current wind speed falls in a speed interval (v e2 ，v a2 ) If the gravity energy storage device executes an energy storage instruction, the generator set executes an operation instruction, and if the gravity energy storage device does not execute the energy storage instruction, the main shaft side clutch is in an unlinked state, and the whole novel wind power generation system is stopped;
gravity energy memory carries out the energy storage instruction, and the generating set carries out the control process of operation instruction and specifically includes:
the energy storage instruction enables the first energy release clutch 3-7 and the second energy release clutch 3-8 to be in an un-linked state, the first energy storage clutch 3-9 and the second energy storage clutch to be in a linked state, the energy release gear box 3-5 is enabled to be separated from the driving shaft 3-4 and the winch shaft 2-2, the driving shaft 3-4 is synchronously linked with the winch shaft 2-2 through the energy storage gear box 3-6, the locking device is unlocked, and the weight 2-4 is enabled to release the current locking state;
under the operation instruction of the wind turbine generator, a main shaft side clutch 1-16 and a power shaft side clutch 1-17 are in a full linkage state, natural wind drives an impeller shaft 1-3 to rotate clockwise through a blade 1-2, the rotating impeller shaft 1-3 drives a generator 1-7 to generate electricity through a driving shaft 3-4 and a winch shaft 2-2 which are sequentially connected, a speed increasing box 1-15 increases the rotating speed of the power shaft 1-6 to realize the normal operation of the generator 1-7, and the power shaft 1-6 drives the generator 1-7 to work, so that wind energy is converted into electric energy and gravitational potential energy at the same time; in the process that the wind turbine generator drives the driving shaft 3-4 to rotate, the driving shaft 3-4 drives the winch shaft 2-2 to rotate through the energy storage gear box 3-6, so that the winch 2-1 rotates, the hinge 2-3 is wound on the winch 2-1 step by step, the weight block 2-4 rises, and wind energy is converted into gravitational potential energy to be stored; then executing step S1;
when the weight 2-4 is located at the highest point of the hinge 2-3, the gravity energy storage device cannot store energy again, and the whole novel wind power generation system is stopped.
Example 5:
as shown in fig. 9, the power transmission device includes two sets of gravity energy storage devices, the two sets of gravity energy storage devices and the corresponding mode switching devices form units a and B, similarly to embodiment 3, the energy release gear boxes and the energy storage gear boxes of the two sets of units are connected through the relay gear boxes C and D, at this time, the two sets of mode switching devices share one driving shaft, and in a specific application, the driving shafts of the multiple sets of mode switching devices can be connected with the driving shaft through the existing conversion gear box in a one-input-multiple-output manner, and are connected with the driving shaft in a multiple-input-one-output manner.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a wind power generation system based on gravity energy storage system, includes wind turbine generator system, gravity energy memory and central processing unit, its characterized in that:
the wind turbine generator set comprises a blade assembly, a main shaft, a power shaft and a generator which are connected in sequence; the gravity energy storage device comprises a winch, a winch shaft, a hinge and a weight, wherein the winch shaft drives the winch to rotate; the gravity energy storage device is connected between the main shaft and the power shaft through a mode switching device, and the mode switching device comprises:
the reversing assembly is used for unifying the rotation directions of the main shaft, the winch and the power shaft;
the clutch assembly is used for realizing full linkage and separation of the winch, the main shaft and the power shaft;
the mode switching device is a first mode switching device or a second mode switching device, a reversing component of the first mode switching device comprises a first gear commutator and a second gear commutator, a clutch component is a winch clutch, the first gear commutator is positioned between a main shaft and a winch shaft, the second gear commutator is arranged between the winch shaft and a power shaft, the winch is sleeved outside the winch shaft, and the winch clutch is arranged between the winch and the winch shaft;
the second mode switching device also comprises a driving shaft, a reversing assembly of the second mode switching device comprises an energy release gear box and an energy storage gear box, a clutch assembly comprises a first energy release clutch, a second energy release clutch, a first energy storage clutch and a second energy storage clutch, the main shaft is connected with a power shaft through the driving shaft, the driving shaft is in transmission connection with the winch shaft through the energy release gear box and the energy storage gear box, the first energy release clutch is installed between the driving shaft and the energy release gear box, the second energy release clutch is installed between the winch shaft and the energy release gear box, the first energy storage clutch is installed between the driving shaft and the energy storage gear box, and the second energy storage clutch is installed between the winch shaft and the energy storage gear box;
the central processing unit includes:
a speed interval judging module for judging the speed interval of the current wind speed, wherein the speed interval comprises a first speed interval (v) a1 , v e1 ) Second speed interval [ v ] e1 ,v e2 ]And a third speed interval (v) e2 , v a2 ) (ii) a Wherein v is a1 Starting the wind speed, v, for the gravity energy storage device e1 For cutting into the wind speed, v e2 To cut out wind speed, v a2 The wind speed is stopped by the gravity energy storage device, and the wind speed v is started by the gravity energy storage device and is not less than 0 a1 < cut-in wind speed v e1 < cut-out wind speed v e2 < wind speed v stopped by gravity energy storage device a2 ；
A control command generation module for generating a control command when the current wind speed is in a first speed interval (v) a1 , v e1 ) When the gravity energy storage device is in the normal state, generating an energy release instruction of the gravity energy storage device and an operation instruction of the wind turbine generator set, enabling the gravity energy storage device to work in an energy release mode, and enabling the wind turbine generator set to operate; when the current wind speed is in the second speed interval v e1 , v e2 ]When the wind power generation system is in the normal state, generating a gravity energy storage device stopping instruction and a wind power generation set operating instruction to stop the gravity energy storage device and simultaneously operate the wind power generation set; in the third speed interval (v) at the current wind speed e2 , v a2 ) And when the gravity energy storage device works in the energy storage mode, the wind turbine generator runs.
2. Wind power generation system based on a gravity energy storage system according to claim 1,
the gravity energy storage device works in an energy release mode, and meanwhile, the running process of the wind turbine generator set comprises the following steps:
the clutch component enables the winch, the main shaft and the power shaft to be in a full linkage state; spindle through blade assembly at rotational speed v l Rotating, the weight descends and drives the winch at a rotating speed v through the hinge s Rotating at a rotational speed of the power shaftv l +v s ；
The gravity energy storage device stops running, and the running process of the wind turbine generator set comprises the following steps:
the clutch component enables the winch to be in a separation state with the main shaft and the power shaft, and the gravity energy storage device is separated from the wind power generation component; the blade assembly sequentially drives the main shaft and the power shaft to rotate through wind power, so that the generator generates electricity;
gravity energy memory work is in the energy storage mode, and the process of wind turbine generator system operation still includes simultaneously:
the clutch component enables the winch, the main shaft and the power shaft to be in a full linkage state; the blade assembly drives the main shaft at a rotating speed v h Rotating, and simultaneously driving the winch to rotate at a rotating speed v by the main shaft through the mode switching device c Rotating to make the rotating speed transmitted to the power shaft be v h -v c 。
3. The wind power generation system based on the gravity energy storage system according to claim 1, wherein the output end of the main shaft is provided with a gearbox, and the input end of the power shaft is provided with a speed increasing box.
4. The wind power generation system based on a gravity energy storage system according to claim 1, wherein the output end of the main shaft is provided with a main shaft side clutch.
5. A wind power system based on a gravity energy storage system according to claim 1, wherein the input end of the power shaft is provided with a power shaft side clutch.
6. The wind power system according to claim 1, wherein the gravity energy storage device comprises a vertically arranged positioning rail, and the weight is moved up and down in the positioning rail.
7. The gravity energy storage system based wind power generation system according to claim 1, further comprising:
the information acquisition unit comprises a wind speed acquisition module, a wind direction acquisition module, a wind turbine generator parameter acquisition module and a heavy block information acquisition module and is used for acquiring current wind speed data, wind direction data, wind turbine generator operation data and heavy block operation data;
the data processor is used for processing and correcting the data collected by the information acquisition unit;
and the data memory is used for storing the data received by the central processing unit and the control instruction sent out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211599379.3A CN115653836B (en) | 2022-12-14 | 2022-12-14 | Novel wind power generation system based on gravity energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211599379.3A CN115653836B (en) | 2022-12-14 | 2022-12-14 | Novel wind power generation system based on gravity energy storage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115653836A CN115653836A (en) | 2023-01-31 |
| CN115653836B true CN115653836B (en) | 2023-03-28 |
Family
ID=85022966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211599379.3A Active CN115653836B (en) | 2022-12-14 | 2022-12-14 | Novel wind power generation system based on gravity energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115653836B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338734A (en) * | 2008-08-13 | 2009-01-07 | 杨柒拾 | Energy storage type wind power generation plant |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR377859A (en) * | 1907-05-16 | 1907-09-18 | Johann Jankus | Wind motor with force accumulator |
| CN107355347A (en) * | 2016-05-10 | 2017-11-17 | 张占海 | Energy-storage-type wind generator |
| CN108825436A (en) * | 2018-08-23 | 2018-11-16 | 秦明 | With the blower fan power generation system and its control method for storing gravitional force function |
| CN108894929B (en) * | 2018-09-03 | 2024-04-05 | 贵州电网有限责任公司 | Low wind speed stage fan and compressed air energy storage hybrid power generation system and control method |
| AU2020406671A1 (en) * | 2019-12-19 | 2022-07-07 | Mark Stewart Dimmock | Mechanical energy storage |
-
2022
- 2022-12-14 CN CN202211599379.3A patent/CN115653836B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338734A (en) * | 2008-08-13 | 2009-01-07 | 杨柒拾 | Energy storage type wind power generation plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115653836A (en) | 2023-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1268843C (en) | Megawatt grade speed veriable constant frequency wind electric generator set | |
| CN102966336A (en) | Wind direct-driven oil pumping unit | |
| CN202789356U (en) | Energy storing device capable of utilizing gravitational potential energy to store and release electricity | |
| CN102042179B (en) | The wind power generating set with vertical shaft that a kind of fan blade is collapsible, oil hinders speed governing and control | |
| CN101514677B (en) | Vertical wind driven generator | |
| CN106523265B (en) | Horizontal shaft type wind turbine, wind turbine set and traction transmission system | |
| CN108194287A (en) | A kind of packaged type wind power generating set cranking system and jiggering method | |
| CN115653836B (en) | Novel wind power generation system based on gravity energy storage system | |
| CN107842468B (en) | Parallel type medium-high altitude wind energy ground generator set | |
| CN101545452B (en) | Vertical wind-powered generator | |
| CN107740754A (en) | A kind of transmission device used for wind-energy power generation | |
| CN102418674B (en) | Energy storage wind driven power generation device | |
| CN101550917B (en) | Vertical wind power generator | |
| CN101956672A (en) | Wind power generation method and device suitable for wide wind speed range | |
| CN202370757U (en) | Energy-storage wind power generating set | |
| CN202990984U (en) | Wind power direct drive oil pumping unit | |
| CN210622967U (en) | Ocean power generation device | |
| CN111502926A (en) | Wind generating set, cabin weight hoisting method and system | |
| CN103807108B (en) | The maintenance of pitch-controlled system parts more changing device and wind power generating set | |
| CN210927346U (en) | Modular combined energy storage power generation device | |
| CN210422898U (en) | Lifting device of swing arm of swing type power driving device | |
| CN220283236U (en) | Inside hoisting device of aerogenerator | |
| CN115977870B (en) | Vertical axis power generation fan | |
| CN117097068B (en) | Gravity energy storage system based on mechanical coupling flywheel | |
| CN215804939U (en) | Sail type wind driven generator |
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 |