CN106762399B - Umbrella-shaped wind energy conversion system and control method thereof - Google Patents
Umbrella-shaped wind energy conversion system and control method thereof Download PDFInfo
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- CN106762399B CN106762399B CN201710093960.0A CN201710093960A CN106762399B CN 106762399 B CN106762399 B CN 106762399B CN 201710093960 A CN201710093960 A CN 201710093960A CN 106762399 B CN106762399 B CN 106762399B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D5/00—Other wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The application provides an umbrella-type wind energy conversion system, which comprises a cable, a lifting force guide body, a power generation device and at least one group of umbrella ladders, wherein the umbrella ladders comprise a switching umbrella and an opening-adjustable umbrella; the opening and closing umbrella changes the windward area of the umbrella body through opening and closing the umbrella body; the opening-adjustable umbrella changes the windward area of the umbrella body by adjusting the opening size of the umbrella body; wherein, the switching umbrella is used as a working umbrella; the umbrella with the adjustable opening can be used as a working umbrella and a balance umbrella. The application also provides a control system of the system and a control method of the system. The application provides an umbrella-type wind energy conversion system and a control system thereof, which can flexibly adjust the quantity of acting umbrellas in an umbrella ladder and the proportion distribution of the acting umbrellas and balance umbrellas according to actual needs, and can better adapt to different power generation areas, different wind conditions and different actual power generation demands.
Description
Technical Field
The application relates to the field of high-altitude wind energy conversion, in particular to an umbrella-shaped wind energy conversion system, a control system and a control method thereof.
Background
Wind energy is a clean renewable energy source, and the high-altitude wind energy can be fully utilized for human use, so that the wind energy is a hot topic which is always focused on by scientific researchers. The high altitude wind and high altitude wind energy are characterized in that: high wind speed, high average energy density, wide regional distribution, high stability and continuous throughout the year. The utilization of high altitude wind energy is to collect wind energy in the high altitude, convert the wind energy into mechanical energy, and finally convert the mechanical energy into electric energy or other forms of energy.
The Chinese patent application No. 200910190150.2 discloses a high-power umbrella-type wind power generation system, which comprises a track rope, a lifting force guiding body, an umbrella ladder and a power generation device, wherein one end of the track rope penetrates through the umbrella ladder to tie the lifting force guiding body, and the other end of the track rope is fastened to a heavy object; the lifting force guiding body straightens the track rope to form an umbrella track; a distance is maintained between the lift guide body and the umbrella. The umbrella ladder consists of one or more umbrellas; a distance is kept between adjacent umbrellas; an opening is arranged at the center of the umbrella for the track rope to pass through; when the umbrella is opened, a huge upward pulling force can be formed due to the action of wind force. The acting umbrella is divided into a bearing umbrella and a acting umbrella; the bearing umbrella is fastened on the track rope for system balance; the acting umbrella moves up and down to do work; the acting umbrella is connected with an acting rope, one end of the acting rope is fixedly connected with the acting umbrella, the other end of the acting rope is connected with a power generation device, and the power generation device is pulled to perform mechanical movement so as to convert wind energy into electric energy. The application mainly utilizes the magnet or the adhesive pad to realize the opening and closing of the acting umbrella, and the method is simple, but has higher requirements on the attraction force of the adopted magnet or the adhesive pad adhesive force: if the force is too weak, the acting umbrella in a closed state cannot be pulled back to the initial point of the acting stroke; if it is too strong, it is difficult to separate the upper and lower sliders that are sucked together. Therefore, the control difficulty of this method is great.
The chinese patent application No. 201110151527.0 discloses an umbrella-type wind power device comprising: work rope set at an angle to the ground; the control box, the sliding cylinder, the acting umbrella and the balancing device are sequentially connected to the acting rope from bottom to top, and the control box is fixed to the acting rope and is wirelessly connected with the central control device; a plurality of strings connected between the umbrella-shaped edge of the acting umbrella and the sliding cylinder; the umbrella control rope is connected between the control box and the sliding cylinder and is controlled by the control box to change the elongation of the umbrella control rope. The application also discloses a wind energy power system realized by adopting the umbrella-shaped wind power device. The application mainly realizes the opening and closing of the acting umbrella by controlling the tensioning and releasing of the umbrella rope by the driver, the method is very simple, but the stability of the opening and closing in the air of the acting umbrella is poor, and the implementation process often occupies excessive acting time due to the longer winding of the control rope when the umbrella is opened, thereby reducing the power generation efficiency.
Meanwhile, the inventor also improves the method, namely, chinese patent application No. 201110322204.3 discloses an umbrella-shaped wind energy conversion device and system, wherein the device comprises: a track rope; the lower driver, the lower stop block and the upper stop block are sequentially and fixedly connected to the track rope from bottom to top, and the lower driver is connected with the sliding cylinder through at least one umbrella control rope; a plurality of string acting umbrellas are connected between the umbrella-shaped edge and the sliding cylinder; the upper driver is meshed with the chain for transmission; when the lower driver reaches the working lower limit position relative to the ground, a first prompt signal is sent to enable the lower driver to shorten the umbrella control rope, so that the acting umbrella is opened under the action of wind power; when the lower driver reaches the upper working limit position relative to the ground, a second prompting signal is sent out to enable the lower driver to release the umbrella control rope, and enable the upper driver to descend along the chain to drive the top of the acting umbrella to move downwards so as to enable the acting umbrella to be folded. The application can make the opening and closing of the acting umbrella in the air more stable, can effectively prevent the phenomenon of winding caused by too many ropes when the acting umbrella is opened and closed, and can realize stable high-power wind energy conversion. However, the method for controlling the opening and closing of the acting umbrella is mainly realized by up-and-down transmission of the upper driver on the chain and the retraction of the umbrella rope of the lower driver, and the opening and closing of the acting umbrella cannot be realized rapidly, and the problem of excessive occupation of acting time is not completely solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the application provides an umbrella-shaped wind energy conversion system which has higher power generation efficiency, more stable opening and closing and adjustable power generation power according to the requirement.
The application also provides a control system of the umbrella-shaped wind energy conversion system.
The application also provides a control method of the umbrella-shaped wind energy conversion system.
In order to achieve the purpose of the application, the following technical scheme is adopted:
an umbrella-type wind energy conversion system comprises a cable, a lifting force guide body, a power generation device and at least one group of umbrella ladders, wherein the umbrella ladders comprise a acting umbrella and a balancing umbrella; the acting umbrella comprises a switching umbrella and/or an opening-adjustable umbrella, and the balance umbrella comprises an opening-adjustable umbrella; the opening and closing umbrella changes the windward area of the umbrella body through opening and closing the umbrella body; the opening-adjustable umbrella changes the windward area of the umbrella body by adjusting the opening size of the umbrella body.
One end of the cable penetrates through the umbrella ladder to tie the lift force guiding body, and the other end of the cable is connected with the power generation device; the lift guide body and the balanced umbrella straightening cable form an umbrella track.
In the prior art, an umbrella ladder generally comprises a working umbrella and a balancing umbrella, wherein the working umbrella is used for pulling a cable to work under the action of wind power to generate power, and the balancing umbrella is used for balancing the weight of the whole air system (including the umbrella, the cable, other auxiliary devices and the like). The umbrella type wind energy system provided by the application adopts two different umbrella type wind power devices to form an umbrella ladder, wherein the opening and closing umbrella realizes the change of the windward area of the umbrella body through the opening and closing of the umbrella body, and the opening of the umbrella with the adjustable opening changes the windward area of the umbrella body through adjusting the opening size of the umbrella body. In the scheme, the switching umbrella is mainly used as a acting umbrella, and the umbrella with the adjustable opening can be used as the acting umbrella and also can be used as a balance umbrella, and can be adjusted according to the wind speed and the required power generation in the practical application process, for example: when the wind force is smaller and the required power is larger, the balance umbrella can be changed into a working umbrella, and the windward area can be increased or reduced by only increasing or reducing the opening of the umbrella; when the wind power is large and the required power generation power is small, the opening-adjustable umbrella which is used as the acting umbrella can be changed into a balance umbrella for use. In addition, when the umbrella with the adjustable opening is used as a balance umbrella, the opening size of the umbrella body can be adjusted according to the current wind power so as to adapt to actual needs. Therefore, the umbrella-type wind energy conversion system provided by the application can very flexibly adjust the action distribution of the umbrella-type wind power device in the umbrella ladder, namely, the proportion of the acting umbrella and the balance umbrella in the umbrella ladder can be flexibly controlled, and the umbrella-type wind energy conversion system can better adapt to different situations and different actual requirements.
Further, the switching umbrella is a single-drive umbrella-type wind energy conversion device, which comprises: the first stop block and the second stop block are sequentially and fixedly connected to the cable from bottom to top; the top center of the first umbrella body is sleeved on the cable; the first umbrella head device, the first driver and the first umbrella tail device which are sleeved on the cable are sequentially arranged between the first stop block and the second stop block from bottom to top; the first umbrella head device is connected with the first umbrella body through a first umbrella rope, the first umbrella rope is connected to the edge of the first umbrella body, the first driver moves back and forth between the first umbrella head device and the first umbrella tail device, and the first umbrella tail device is arranged at the center of the top of the first umbrella body and sleeved on a cable; the first stop block and/or the first umbrella head device are/is provided with a first locking mechanism which can lock the first stop block and the first umbrella head device; the first driver and/or the first umbrella tail device are/is provided with a second locking mechanism which can lock the first driver and the first umbrella tail device.
The umbrella type wind energy conversion device is mainly opened and closed by adopting the umbrella head device, the driver and the umbrella tail device to move back and forth on the mooring rope, the umbrella body can be opened and closed only by a plurality of actions in the opening and closing process, and especially, the opening and closing process of the umbrella body needs less than one second, and the wind force effect is fully utilized in the opening and closing process, so that the electric energy consumption in the movement process of the driver is greatly reduced. Meanwhile, the device is fewer and simple in structure, and weight increment of a cable can be greatly reduced, so that the wind energy conversion efficiency of the umbrella-shaped wind energy conversion device is greatly improved.
Further, the switching umbrella is a double-drive umbrella type wind energy conversion device, and the double-drive umbrella type wind energy conversion device comprises: a third stop fixed to the cable; the top center of the second umbrella body is sleeved on the cable; two drives that cup joint on the cable and can reciprocate on the cable include: the second driver is connected with the top center of the second umbrella body; a third driver located between the third stop and the second driver; the third driver is connected with the second umbrella body through a second umbrella rope, and the second umbrella rope is connected with the edge of the second umbrella body; the third driver and/or the third stop are provided with a third locking mechanism which can lock the third driver and the third stop.
The scheme mainly adopts two drivers to move back and forth on the mooring rope to realize the opening and closing of the umbrella-shaped wind energy conversion device, the opening and closing process of the umbrella body can be realized by only a few actions, and the wind force effect is utilized in the opening and closing process, so that the electric energy consumption of the drivers is greatly reduced. Meanwhile, the device is fewer and simple in structure, and weight increment of a cable can be greatly reduced, so that the wind energy conversion efficiency of the umbrella-shaped wind energy conversion device is greatly improved.
Further, the switching umbrella comprises a single-drive umbrella type wind energy conversion device and a double-drive umbrella type wind energy conversion device.
Further, the opening-adjustable umbrella comprises: a second umbrella head device fixed on the cable; the top center of the third umbrella body is sleeved on the mooring rope; the second umbrella tail device is sleeved on the cable and connected with the top center of the third umbrella body; the opening adjusting device is sleeved on the cable and positioned between the second umbrella head device and the second umbrella tail device; the second umbrella head device is connected with the edge of the third umbrella body through a third umbrella rope; the opening adjusting device is connected with the edge of the third umbrella body through a fourth umbrella rope and is used for adjusting the opening size of the third umbrella body.
According to the scheme, the opening adjusting device is used for winding the fourth umbrella rope to adjust the opening of the umbrella-shaped wind power device, so that the windward area of the adjusting device is realized, and the tension of the adjusting device is further adjusted. The umbrella-shaped wind power device provided by the scheme is simple in structure, the windward area of the umbrella-shaped wind power device can be changed only by the opening adjusting device, and the tension of the umbrella-shaped wind power device is adjusted.
Further, the ratio of the switching umbrella to the opening-adjustable umbrella is 3-5:1. As the switching umbrella is used as the acting umbrella in practical application, and the change of the windward area of the switching umbrella is larger than that of the opening-adjustable umbrella, the power generation efficiency of the switching umbrella is larger than that of the opening-adjustable umbrella, and therefore, the number of the switching umbrellas is preferably larger than that of the opening-adjustable umbrella.
Further, the opening-adjustable umbrellas are distributed in the array of the opening-closing umbrellas at intervals. The opening-adjustable umbrella is inserted into the switching umbrella, so that the weight of the whole aerial system (comprising the umbrella, a cable, other auxiliary devices and the like) can be balanced when the opening-adjustable umbrella is used as a balance umbrella.
Further, the distance from the first umbrella to the last umbrella in the umbrella ladder is divided into an upper half part and a lower half part by the middle point, and the distribution quantity of the umbrellas in the umbrella ladder is larger than or equal to the distribution quantity of the lower half part.
The control system of the umbrella-shaped wind energy conversion system comprises a wind speed acquisition module, an analysis module and a control module; the wind speed acquisition module is used for acquiring real-time high-altitude wind speed and transmitting the acquired real-time high-altitude wind speed to the analysis module; the analysis module is used for calculating the power generation at the real-time high-altitude wind speed according to the real-time high-altitude wind speed acquired by the wind speed acquisition module, comparing the power generation at the real-time high-altitude wind speed with the power generation preset by the system, analyzing the number of acting umbrellas, the number of opening and closing umbrellas and the number of opening-adjustable umbrellas in the acting umbrellas according to the real-time high-altitude wind speed, and sending an analysis result to the control module; the control module is used for controlling the opening and closing of the switching umbrella and the opening size of the opening-adjustable umbrella according to the analysis result of the analysis module.
The application collects the real-time high altitude wind speed of the power generation area through the wind speed collection module of the control system, transmits the collected real-time high altitude wind speed information to the analysis module of the control system, determines the size and the number of the acting umbrellas and the proportion of the acting umbrellas to the balance umbrellas according to the real-time high altitude wind speed of the power generation area and the preset power generation power of the system by the analysis module, obtains the analysis result, and then sends the analysis result to the control module of the control system, and the control module controls the opening and the closing of each switching umbrella and the opening of the opening adjustable umbrella so as to achieve the effect of controlling the power generation power of the umbrella-shaped wind energy conversion system to meet the preset power generation power of the system. Therefore, the control system provided by the application can still effectively control the generation power of the umbrella-shaped wind energy conversion system to be in accordance with the preset generation power under different wind speeds, can improve the stability of the generation of the umbrella-shaped wind energy conversion system, can meet the requirement of supplying power to a power grid in different time periods, and has very high flexibility.
Further, the control system further comprises a position information acquisition module, wherein the position information acquisition module is used for acquiring the height of the acting umbrella from the ground and transmitting the height information to the analysis module; the analysis module controls the opening or closing of the switching umbrella according to the height information and the upper limit position and the lower limit position of the work relative to the ground preset by the system, and adjusts the opening of the opening-adjustable umbrella used as the acting umbrella; the control module controls the opening and closing of the switching umbrella according to the analysis result obtained by the analysis module, and the opening size of the opening-adjustable umbrella used as the acting umbrella.
The scheme of the application mainly comprises the following steps: for the switching umbrella, as the switching umbrella is mainly used as a acting umbrella, when the position information acquisition module acquires that the position of the switching umbrella reaches the upper limit position of work, the analysis module receives and makes a command for closing the switching umbrella and sends the command to the control module, and the control module controls the switching umbrella to be closed; when the position information acquisition module acquires that the position of the switching umbrella reaches the lower limit position of work, the analysis module receives and makes a command for opening the switching umbrella and sends the command to the control module, and the control module controls the switching umbrella to be opened. When the position information acquisition module acquires that the position of the opening-adjustable umbrella reaches the upper limit position of work, the analysis module receives and makes a command for adjusting the opening of the opening-adjustable umbrella to the minimum, and the control module controls the opening of the opening-adjustable umbrella to be adjusted to the minimum; when the position information acquisition module acquires that the position of the opening-adjustable umbrella reaches the lower limit position of work, the analysis module receives the position information and makes a command for adjusting the opening of the opening-adjustable umbrella to the maximum, and the control module controls the opening of the opening-adjustable umbrella to be adjusted to the maximum.
Further, the control module comprises a control device which is arranged on the driver of the switching umbrella and the opening regulator of the opening-adjustable umbrella.
Further, the wind speed acquisition module comprises a wind speed acquisition device, and the wind speed acquisition device is arranged below the lift force guide body. Because the lift guide body is used for straightening the cable to form the umbrella track, the lift guide body is relatively stable, and the wind speed acquisition device is arranged below the lift guide body, so that the accuracy of wind speed acquisition data is improved.
The control method of the umbrella-shaped wind energy conversion system comprises the following specific steps:
s1: collecting real-time high-altitude wind speed;
s2: according to the real-time high-altitude wind speed, the power generated under the real-time high-altitude wind speed and the power preset by the system, the number of acting umbrellas, the number of opening and closing umbrellas and the opening adjustable umbrellas in the acting umbrellas and the opening size of the opening adjustable umbrellas used as balance umbrellas are controlled.
Further, the step S2 specifically includes:
s21: when the wind speed is increased and the generated power preset by the system is higher than the generated power at the real-time high-altitude wind speed, the number of acting umbrellas is increased: when the number of acting umbrellas is smaller than that of the switching umbrellas, the number of the switching umbrellas is increased, and meanwhile, the opening of the balance umbrella is reduced; when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the balance umbrella is adjusted to be used as the acting umbrella;
s22: when the wind speed is increased and the power generated by the system is equal to the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is kept unchanged, and meanwhile, the opening of the balance umbrella is reduced;
s23: when the wind speed is increased and the power generated by the system is lower than the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is reduced, and meanwhile, the opening of the balance umbrella is reduced: when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the part of the opening-adjustable umbrellas are adjusted from the acting umbrellas to balance umbrellas; when the number of the acting umbrellas is smaller than that of the switching umbrellas, closing part of the switching umbrellas;
s24: when the wind speed is reduced and the power generated by the system is higher than the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is increased, and meanwhile, the opening of the balance umbrella is increased: when the number of the acting umbrellas is smaller than that of the switching umbrellas, the number of the switching umbrellas is increased; when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the balance umbrella is adjusted to be used as the acting umbrella;
s25: when the wind speed is reduced and the power generated by the system is equal to the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is kept unchanged, and meanwhile, the opening of the balance umbrella is increased;
s26: when the wind speed is reduced and the generated power preset by the system is lower than the generated power at the real-time high-altitude wind speed, the number of acting umbrellas is reduced: when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the part of the opening-adjustable umbrellas are adjusted from the acting umbrellas to balance umbrellas; when the number of acting umbrellas is smaller than that of the switching umbrellas, part of the switching umbrellas are closed, and meanwhile, the opening of the balance umbrella is increased.
Further, the method also comprises the following steps: when the acting umbrella reaches the working upper limit position of the system preset relative to the ground, the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be closed, and the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be adjusted to be minimum; when the acting umbrella reaches a working lower limit position preset by the system and corresponding to the ground, the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be opened and controlled to be the maximum.
Compared with the prior art, the application provides an umbrella-type wind energy conversion system, which can flexibly adjust the quantity of acting umbrellas in an umbrella ladder and the proportion distribution of the acting umbrellas and the balance umbrellas according to actual needs, and can better adapt to different power generation areas, different wind conditions and different actual power generation demands.
Drawings
FIG. 1 is a schematic view of an embodiment of the application with an umbrella fully open;
FIG. 2 is a schematic view of an umbrella fully closed according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a single drive umbrella wind energy conversion device;
FIG. 4 is a schematic diagram of a dual drive umbrella wind energy conversion device;
FIG. 5 is a schematic view of an umbrella with an adjustable opening.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in further detail with reference to the accompanying drawings.
Examples
An umbrella-type wind energy conversion system comprises a cable 1, a lifting force guide body 2, a power generation device 3 and at least one group of umbrella ladders, wherein the umbrella ladders comprise a acting umbrella and a balancing umbrella; the acting umbrella comprises a switching umbrella and/or an opening-adjustable umbrella, and the balance umbrella comprises an opening-adjustable umbrella; the opening and closing umbrella changes the windward area of the umbrella body through opening and closing the umbrella body; the opening-adjustable umbrella changes the windward area of the umbrella body by adjusting the opening size of the umbrella body.
The lift force guiding body can enable helium balloons, kites and the like, the lift force guiding body can lift the initial aerial system, and the first umbrella can play a role of safety after being opened.
In this embodiment, the switching umbrella comprises a single-drive umbrella type wind energy conversion device 4 and/or a double-drive umbrella type wind energy conversion device 5;
wherein the single-drive umbrella-type wind energy conversion device 4 comprises: a first stop block 402 and a second stop block 403 which are fixedly connected to the cable 1 in sequence from bottom to top; a first umbrella 404 with its top center sleeved on the cable; a first umbrella head device 405, a first driver 406 and a first umbrella tail device 407 which are sleeved on the cable 1 are sequentially arranged between the first stop block 402 and the second stop block 403 from bottom to top; the first umbrella head device 405 is connected with the first umbrella body 404 through a first umbrella rope 408, the first umbrella rope 408 is connected to the edge of the first umbrella body 404, the first driver 406 moves back and forth between the first umbrella head device 405 and the first umbrella tail device 407, and the first umbrella tail device 407 is arranged at the top center of the first umbrella body 404 and sleeved on a cable; said first stop 402 and/or said first umbrella head device 405 are provided with a first locking mechanism 409 capable of locking said first stop 402 and said first umbrella head device 405; the first actuator 406 and/or the first end device 407 are provided with a second locking mechanism 410 capable of locking the first actuator 406 and the first end device 407.
Wherein the dual-drive umbrella-type wind energy conversion device 5 comprises: a third stop 502 fixed to the cable 1; a second umbrella 503 with its top center sleeved on the cable 1; two drives 504, which are sleeved on the cable and can move back and forth on the cable 1, comprise: a second driver 541 connected to the top center of the second umbrella 503; a third driver 542 located between the third stop 502 and the second driver 541; third actuator 542 is coupled to second umbrella body 503 via second cord 505, and second cord 505 is coupled to an edge of second umbrella body 503; the third driver 542 and/or the third stop 502 is provided with a third locking mechanism 506 capable of locking the third driver 542 and the third stop 502.
In this embodiment, the opening-adjustable umbrella 6 includes: a second umbrella head device 602 secured to cable 1; the top center is sleeved on a third umbrella body 603 on the cable 1; a second tail device 604 sleeved on the cable 1 and connected with the top center of the third umbrella body 603; an opening adjustment device 605 sleeved on the cable 1 and positioned between the second head device 602 and the second tail device 604; the second umbrella head device 602 is connected with the edge of the third umbrella body 603 through a third umbrella rope 606; the opening adjusting device 605 is connected with the edge of the third umbrella body 603 through a fourth umbrella rope 607, and the opening adjusting device 605 is used for adjusting the opening size of the third umbrella body 603.
Preferably, the ratio of the switching umbrella to the opening-adjustable umbrella is 3-5:1, and the opening-adjustable umbrella is distributed in the array of the switching umbrella at intervals. In addition, the distance from the first umbrella to the last umbrella in the umbrella ladder is divided into an upper half part and a lower half part by the middle point, and the distribution quantity of the umbrellas in the umbrella ladder is larger than or equal to the distribution quantity of the lower half part.
The control system of the umbrella-shaped wind energy conversion system comprises a wind speed acquisition module, an analysis module and a control module; the wind speed acquisition module is used for acquiring real-time high-altitude wind speed and transmitting the acquired real-time high-altitude wind speed to the analysis module; the analysis module is used for calculating the power generation at the real-time high-altitude wind speed according to the real-time high-altitude wind speed acquired by the wind speed acquisition module, comparing the power generation at the real-time high-altitude wind speed with the power generation preset by the system, analyzing the number of acting umbrellas, the number of opening and closing umbrellas and the number of opening-adjustable umbrellas in the acting umbrellas according to the real-time high-altitude wind speed, and sending an analysis result to the control module; the control module is used for controlling the opening and closing of the switching umbrella and the opening size of the opening-adjustable umbrella according to the analysis result of the analysis module.
The control system further comprises a position information acquisition module, wherein the position information acquisition module is used for acquiring the height of the acting umbrella from the ground and transmitting the height information to the analysis module; the analysis module controls the opening or closing of the switching umbrella according to the height information and the upper limit position and the lower limit position of the work relative to the ground preset by the system, and adjusts the opening of the opening-adjustable umbrella used as the acting umbrella; the control module controls the opening and closing of the switching umbrella according to the analysis result obtained by the analysis module, and the opening size of the opening-adjustable umbrella used as the acting umbrella.
The control module comprises a control device which is arranged on a driver of the switching umbrella and an opening regulator of the opening-adjustable umbrella; the wind speed acquisition module comprises a wind speed acquisition device, and the wind speed acquisition device is arranged below the lift force guide body.
The control method of the umbrella-shaped wind energy conversion system comprises the following specific steps:
s1: collecting real-time high-altitude wind speed;
s2: according to the real-time high-altitude wind speed, the power generated under the real-time high-altitude wind speed and the power preset by the system, the number of acting umbrellas, the number of opening and closing umbrellas and the opening adjustable umbrellas in the acting umbrellas and the opening size of the opening adjustable umbrellas used as balance umbrellas are controlled.
The step S2 specifically includes:
s21: when the wind speed is increased and the generated power preset by the system is higher than the generated power at the real-time high-altitude wind speed, the number of acting umbrellas is increased: when the number of acting umbrellas is smaller than that of the switching umbrellas, the number of the switching umbrellas is increased, and meanwhile, the opening of the balance umbrella is reduced; when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the balance umbrella is adjusted to be used as the acting umbrella;
s22: when the wind speed is increased and the power generated by the system is equal to the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is kept unchanged, and meanwhile, the opening of the balance umbrella is reduced;
s23: when the wind speed is increased and the power generated by the system is lower than the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is reduced, and meanwhile, the opening of the balance umbrella is reduced: when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the part of the opening-adjustable umbrellas are adjusted from the acting umbrellas to balance umbrellas; when the number of the acting umbrellas is smaller than that of the switching umbrellas, closing part of the switching umbrellas;
s24: when the wind speed is reduced and the power generated by the system is higher than the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is increased, and meanwhile, the opening of the balance umbrella is increased: when the number of the acting umbrellas is smaller than that of the switching umbrellas, the number of the switching umbrellas is increased; when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the balance umbrella is adjusted to be used as the acting umbrella;
s25: when the wind speed is reduced and the power generated by the system is equal to the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is kept unchanged, and meanwhile, the opening of the balance umbrella is increased;
s26: when the wind speed is reduced and the generated power preset by the system is lower than the generated power at the real-time high-altitude wind speed, the number of acting umbrellas is reduced: when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the part of the opening-adjustable umbrellas are adjusted from the acting umbrellas to balance umbrellas; when the number of acting umbrellas is smaller than that of the switching umbrellas, part of the switching umbrellas are closed, and meanwhile, the opening of the balance umbrella is increased.
Wherein, the control method further comprises the following steps: when the acting umbrella reaches the working upper limit position of the system preset relative to the ground, the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be closed, and the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be adjusted to be minimum; when the acting umbrella reaches a working lower limit position preset by the system and corresponding to the ground, the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be opened and controlled to be the maximum.
The practical work of this embodiment is shown in fig. 1 and 2, in which the number of switching umbrellas distributed in the umbrella ladder is greater than that of the opening-adjustable umbrellas, and the opening-adjustable umbrellas are distributed in the switching umbrellas at intervals. Wherein, the opening and closing umbrella is used as a acting umbrella, and the umbrella with the adjustable opening can be used as a acting umbrella or a balance umbrella. When the wind power is increased, the preset power generation power is reduced or unchanged, changing part of the opening adjustable umbrella used as the acting umbrella into a balance umbrella, and simultaneously reducing the opening of the opening adjustable umbrella used as the balance umbrella; when the wind power is reduced and the preset power generation power is unchanged or increased, the opening of the opening-adjustable umbrella used as the balance umbrella can be increased, and meanwhile, part of the opening-adjustable umbrella used as the balance umbrella is changed into a working umbrella. In addition, the embodiment can also control part of the umbrellas in the umbrella ladder to be closed all the time, and when more umbrellas are required to do work, the umbrellas are controlled to be put into use; and when not too many umbrellas are needed, part of the umbrellas are closed. The number and the proportion of the opening/closing umbrellas and the opening-adjustable umbrellas in the umbrella ladder can be flexibly controlled, so that different wind power conditions and different power generation requirements can be met.
The umbrella type wind energy system provided by the embodiment adopts two different umbrella type wind devices to form an umbrella ladder, wherein the opening and closing umbrella realizes the change of the windward area of the umbrella body through the opening and closing of the umbrella body, and the other umbrella with the adjustable opening changes the windward area of the umbrella body through adjusting the opening size of the umbrella body. In the scheme, the switching umbrella is mainly used as a acting umbrella, and the umbrella with the adjustable opening can be used as the acting umbrella and also can be used as a balance umbrella, and can be adjusted according to the wind speed and the required power generation in the practical application process, for example: when the wind force is smaller and the required power is larger, the balance umbrella can be changed into a working umbrella, and the windward area can be increased or reduced by only increasing or reducing the opening of the umbrella; when the wind power is large and the required power generation power is small, the opening-adjustable umbrella which is used as the acting umbrella can be changed into a balance umbrella for use. In addition, when the umbrella with the adjustable opening is used as a balance umbrella, the opening size of the umbrella body can be adjusted according to the current wind power so as to adapt to actual needs. Therefore, the umbrella-shaped wind energy conversion system provided by the embodiment can very flexibly adjust the action distribution of the umbrella-shaped wind power device in the umbrella ladder, namely, the proportion of the acting umbrella and the balance umbrella in the umbrella ladder can be flexibly controlled, and the umbrella-shaped wind energy conversion system can better adapt to different situations and different actual needs.
Claims (9)
1. A control method of an umbrella-shaped wind energy conversion system is characterized by comprising the following steps:
s1: collecting real-time high-altitude wind speed;
s2: controlling the number of acting umbrellas, the number of opening and closing umbrellas and the opening adjustable umbrellas in the acting umbrellas and the opening size of the opening adjustable umbrellas used as balance umbrellas according to the real-time high-altitude wind speed, the power generated under the real-time high-altitude wind speed and the power preset by the system;
the step S2 specifically comprises the following steps:
s21: when the wind speed is increased and the generated power preset by the system is higher than the generated power at the real-time high-altitude wind speed, the number of acting umbrellas is increased: when the number of acting umbrellas is smaller than that of the switching umbrellas, the number of the switching umbrellas is increased, and meanwhile, the opening of the balance umbrella is reduced; when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the balance umbrella is adjusted to be used as the acting umbrella;
s22: when the wind speed is increased and the power generated by the system is equal to the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is kept unchanged, and meanwhile, the opening of the balance umbrella is reduced;
s23: when the wind speed is increased and the power generated by the system is lower than the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is reduced, and meanwhile, the opening of the balance umbrella is reduced: when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the part of the opening-adjustable umbrellas are adjusted from the acting umbrellas to balance umbrellas; when the number of the acting umbrellas is smaller than that of the switching umbrellas, closing part of the switching umbrellas;
s24: when the wind speed is reduced and the power generated by the system is higher than the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is increased, and meanwhile, the opening of the balance umbrella is increased: when the number of the acting umbrellas is smaller than that of the switching umbrellas, the number of the switching umbrellas is increased; when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the balance umbrella is adjusted to be used as the acting umbrella;
s25: when the wind speed is reduced and the power generated by the system is equal to the power generated by the real-time high-altitude wind speed, the number of acting umbrellas is kept unchanged, and meanwhile, the opening of the balance umbrella is increased;
s26: when the wind speed is reduced and the generated power preset by the system is lower than the generated power at the real-time high-altitude wind speed, the number of acting umbrellas is reduced: when the number of the acting umbrellas is more than or equal to that of the opening and closing umbrellas, the part of the opening-adjustable umbrellas are adjusted from the acting umbrellas to balance umbrellas; when the number of acting umbrellas is smaller than that of the switching umbrellas, part of the switching umbrellas are closed, and meanwhile, the opening of the balance umbrella is increased.
2. The control method according to claim 1, characterized by further comprising the step of: when the acting umbrella reaches the working upper limit position of the system preset relative to the ground, the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be closed, and the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be adjusted to be minimum; when the acting umbrella reaches a working lower limit position preset by the system and corresponding to the ground, the opening of the opening-adjustable umbrella used as the acting umbrella is controlled to be opened and controlled to be the maximum.
3. An umbrella-type wind energy conversion system adopting the control method of claim 1 or 2, comprising a cable, a lifting force guiding body, a power generating device and at least one group of umbrella ladders, wherein the umbrella ladders comprise a work-applying umbrella and a balance umbrella;
the acting umbrella comprises a switching umbrella and/or an opening-adjustable umbrella, and the balance umbrella comprises an opening-adjustable umbrella;
the opening and closing umbrella changes the windward area of the umbrella body through opening and closing the umbrella body;
the opening-adjustable umbrella changes the windward area of the umbrella body by adjusting the opening size of the umbrella body.
4. An umbrella wind energy conversion system according to claim 3 wherein the ratio of switching umbrella to open adjustable umbrella is 3:1 to 5:1.
5. The umbrella wind energy conversion system of claim 4, wherein the open-adjustable umbrellas are spaced apart in a row of the switching umbrellas.
6. An umbrella wind energy conversion system according to claim 3 wherein the distance from the first umbrella to the last umbrella in the ladder is divided by its midpoint into an upper half and a lower half, and wherein the distribution of the umbrellas in the ladder is such that the number of distributions of the upper half is greater than or equal to the number of distributions of the lower half.
7. A control system of an umbrella-type wind energy conversion system according to any one of claims 3 to 6, comprising a wind speed acquisition module, an analysis module and a control module;
the wind speed acquisition module is used for acquiring real-time high-altitude wind speed and transmitting the acquired real-time high-altitude wind speed to the analysis module;
the analysis module is used for calculating the power generation at the real-time high-altitude wind speed according to the real-time high-altitude wind speed acquired by the wind speed acquisition module, comparing the power generation at the real-time high-altitude wind speed with the power generation preset by the system, analyzing the number of acting umbrellas, the number of opening and closing umbrellas and the number of opening-adjustable umbrellas in the acting umbrellas according to the real-time high-altitude wind speed, and sending an analysis result to the control module;
the control module is used for controlling the opening and closing of the switching umbrella and the opening size of the opening-adjustable umbrella according to the analysis result of the analysis module.
8. The control system of claim 7, further comprising a position information acquisition module for acquiring a height of the work umbrella from the ground and transmitting the height information to the analysis module;
the analysis module controls the opening or closing of the switching umbrella according to the height information and the upper limit position and the lower limit position of the work relative to the ground preset by the system, and adjusts the opening of the opening-adjustable umbrella used as the acting umbrella;
the control module controls the opening and closing of the switching umbrella according to the analysis result obtained by the analysis module, and the opening size of the opening-adjustable umbrella used as the acting umbrella.
9. The control system of claim 7, wherein the wind speed acquisition module comprises a wind speed acquisition device mounted below the lift guide body.
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| DE102008024414A1 (en) * | 2008-05-16 | 2009-11-19 | Nölting, Bengt, Dipl.-Phys. Dr. | Device for using wind energy, comprises kite cluster to drive wagon in wind, where wind energy is converted into electrical energy by generator which is placed in wagon, and track of wagon is stabilized by rail |
| CN102330642A (en) * | 2011-10-21 | 2012-01-25 | 广东高空风能技术有限公司 | Umbrella type wind energy conversion device and system |
| CN206458562U (en) * | 2017-02-21 | 2017-09-01 | 广东高空风能技术有限公司 | A kind of umbellate form wind-energy changing system and its control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20150048621A1 (en) * | 2012-03-27 | 2015-02-19 | E-Kite Holding B.V. | Kite power system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008024414A1 (en) * | 2008-05-16 | 2009-11-19 | Nölting, Bengt, Dipl.-Phys. Dr. | Device for using wind energy, comprises kite cluster to drive wagon in wind, where wind energy is converted into electrical energy by generator which is placed in wagon, and track of wagon is stabilized by rail |
| CN102330642A (en) * | 2011-10-21 | 2012-01-25 | 广东高空风能技术有限公司 | Umbrella type wind energy conversion device and system |
| CN206458562U (en) * | 2017-02-21 | 2017-09-01 | 广东高空风能技术有限公司 | A kind of umbellate form wind-energy changing system and its control system |
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