CN114856914A - Air compression energy storage wind power generation system - Google Patents

Air compression energy storage wind power generation system Download PDF

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Publication number
CN114856914A
CN114856914A CN202210504448.1A CN202210504448A CN114856914A CN 114856914 A CN114856914 A CN 114856914A CN 202210504448 A CN202210504448 A CN 202210504448A CN 114856914 A CN114856914 A CN 114856914A
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CN
China
Prior art keywords
air
generator
wind power
power generation
energy storage
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Pending
Application number
CN202210504448.1A
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Chinese (zh)
Inventor
丁超文
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Jinan Taijing Power Technology Co ltd
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Jinan Taijing Power Technology Co ltd
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Priority to CN202210504448.1A priority Critical patent/CN114856914A/en
Publication of CN114856914A publication Critical patent/CN114856914A/en
Pending legal-status Critical Current

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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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/17—Combinations of wind motors with apparatus storing energy storing energy in pressurised fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/02—Use of accumulators and specific engine types; Control thereof
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/04—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0625—Rotors characterised by their aerodynamic shape of the whole rotor, i.e. form features of the rotor unit
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0204—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/06—Combinations of two or more pumps
    • 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

Abstract

The invention relates to an air compression energy storage wind power generation system, which comprises at least one group of air compressors respectively connected to a pipe network container, wherein each group of air compressors is connected with a first generator; the air compressor is a variable frequency air compressor, the first generator is a wind power generator set, the first generator drives the air compressor to inflate a pipe network container under the action of wind power, the pipe network container outputs compressed air to the axial flow fan, and the axial flow fan drives the second generator to synchronously generate electricity to a power grid through the exciter. The air compressor driven by the wind generating set generates compressed air as an energy storage medium to absorb the instability of the wind generating set, the compressed air stored in the pipe network container is matched with the axial flow generator to realize power generation, and unstable electric energy generated by a plurality of groups of wind generating sets is converted into stable electric energy through the stored compressed air.

Description

Air compression energy storage wind power generation system
Technical Field
The invention relates to the technical field of wind power generation, in particular to an air compression energy storage wind power generation system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the existing wind power generation system, each fan is an independent power generation unit, and the problems of intermittence and instability of electricity when wind exists and electricity when wind passes exist.
In the prior art, facilities such as a thermal power generating unit and a pumped storage power station which are put into a power grid together with wind power absorb instability caused by the wind power, but the facilities are high in construction cost, if the facilities are absorbed by a storage battery technology, a large amount of rare metal materials are consumed, and the environmental cost is high.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides an air compression energy storage wind power generation system, each group of wind power generation units are used as power units of an air compressor, output compressed air is connected to an air pipe network container together, then power generation is realized by an axial flow generator arranged at the outlet of the air pipe network container, and air is used as an energy storage medium to absorb the instability of the wind power generation units.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an air compression energy storage wind power generation system, which comprises at least one group of air compressors respectively connected to a pipe network container, wherein each group of air compressors is connected with a first generator;
the air compressor is a variable frequency air compressor, the first generator is a wind power generator set, the first generator drives the air compressor to inflate a pipe network container under the action of wind power, the pipe network container outputs compressed air to the axial flow fan, and the axial flow fan drives the second generator to synchronously generate electricity to a power grid through the exciter.
The first generator comprises a machine head support which is rotatably connected to the top end of the tower frame, one end of the machine head support is connected with the bucket wheel, the other end of the machine head support is connected with the shell of the permanent magnet generator, a rotating shaft is arranged in the machine head support, one end of the rotating shaft is connected with the rotor, the other end of the rotating shaft penetrates through the machine head support to be connected with the working end of the permanent magnet generator, an air duct is arranged on the outer side of the rotor, and one end of the air duct is connected with one end, far away from the permanent magnet generator, of the bucket wheel; the permanent magnet generator is connected with a cable positioned inside the tower.
The bucket wheel is in a cylindrical shape with two open ends, the cross section of the bucket wheel is octagonal, and the opening width of the bucket wheel facing one side of the permanent magnet generator is not smaller than that of the bucket wheel facing one side of the air duct.
The gas compressor comprises a transmission chain connected to an output shaft of the motor, the transmission chain is meshed with a rotating shaft of a transmission wheel, the transmission wheel drives a crankshaft connecting rod piston, a piston head of the crankshaft connecting rod piston reciprocates in a cylinder, and a gas outlet pipeline of the cylinder is connected with a pipe network container.
The output shaft of the motor is connected with the speed reducer, and the output shaft of the speed reducer is connected with the transmission chain.
The driving wheel comprises rotating wheels connected to two ends of a rotating shaft, and the center of the rotating shaft is meshed with the driving chain to drive the rotating wheels at two ends to synchronously rotate.
The crankshaft connecting rod piston comprises a crankshaft connecting rod, one end of the crankshaft connecting rod piston is connected to the rotating wheels, the other end of the crankshaft connecting rod piston is connected with the piston head, and the rotating wheels are respectively connected with the corresponding crankshaft connecting rods.
The piston head is provided with a cylinder inlet valve, and an air outlet pipeline of the cylinder is connected with an air inlet valve of an air storage tank.
The cooling tank is connected to the outer side of the cylinder, and cooling liquid is filled in the cooling tank.
The pipe network container is also connected with a safety valve.
The pipe network container is provided with a control unit, and the control unit is connected with the axial flow fan.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
1. each group of wind generating set is used as a power unit of the air compressor, the output compressed air is connected to the pipe network container together, the air compressor driven by the wind generating set generates compressed air as an energy storage medium to absorb the instability of the wind generating set, the compressed air stored in the pipe network container is matched with the axial flow generator to realize power generation, and the unstable electric energy generated by the multiple groups of wind generating sets is converted into stable electric energy through the stored compressed air.
2. On one hand, the first generator increases the air density and accelerates the wind speed after the bucket wheel with a large front part and a small back part is closed, so that the rotating speed of the rotor is increased, and the generating efficiency is improved; on the other hand, the structure of the bucket wheel has the characteristic of parachute resistance in dynamics, so that the opening of the bucket wheel is always opposite to the incoming wind direction to realize autonomous windward, yaw control and pitch control in the existing wind turbine generator are not needed, and the structure is simpler.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the proper forms disclosed herein.
FIG. 1 is a schematic structural diagram of an air-compression energy-storage wind power generation system provided by one or more embodiments of the invention;
2(a) - (b) are schematic structural diagrams of a first generator in the air-compression energy-storage wind power generation system provided by one or more embodiments of the invention;
FIG. 3 is a schematic structural diagram of a compressor in the air-compression energy-storage wind power generation system according to one or more embodiments of the invention;
in fig. 1: 1. the system comprises a first generator, a second generator, a third generator, a fourth generator, a sixth generator and a fourth generator;
in fig. 2(a) - (b): 111. the wind power generation device comprises a bucket wheel, 112, a wind barrel, 121, a rotating shaft, 122, a rotor, 13, a nose support, 14, a permanent magnet generator, 15, a connecting mechanism, 16, a tower, 17 and a cable;
in fig. 3: 21. the device comprises a motor, a speed reducer, a transmission chain, a left rotating wheel, a right rotating wheel, a crankshaft connecting rod piston, a cylinder, a cooling tank, a cooling cylinder, a cylinder inlet valve, a cylinder outlet valve, a gas storage tank inlet valve and a gas storage tank inlet valve, wherein the motor 22, the speed reducer 23, the transmission chain 24, the left rotating wheel, the right rotating wheel, the crankshaft connecting rod piston 25, the cylinder 26, the cooling tank 28, the cylinder inlet valve 29 and the gas storage tank inlet valve are arranged on the engine;
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, the wind turbine generator system is limited by seasonality, the generated electric energy is unstable, and in the prior art, the instability of wind power is absorbed by facilities such as a thermal power generating unit and the like which are put into a power grid together with the wind turbine generator system, so that the cost is high.
Therefore, the following embodiment provides an air-compression energy-storage wind power generation system, each group of wind power generation units are used as power units of an air compressor, output compressed air is connected to an air pipe network container together, then an axial flow generator arranged at the outlet of the air pipe network container is used for generating power, and air is used as an energy storage medium to absorb instability of the wind power generation units.
The first embodiment is as follows:
as shown in fig. 1-3, an air compression energy storage wind power generation system includes at least one set of air compressors 2 respectively connected to a pipe network container 4, each set of air compressors 2 is connected to a first generator 1, the pipe network container 4 is connected to a second generator 8 through an axial flow fan 7, and the second generator 8 is connected to a power grid through an exciter 9.
The compressor 2 is a variable frequency compressor, the first generator 1 is a wind generating set, each set of compressors 2 is driven by the first generator 1 to charge compressed gas into the pipe network container 4, the pipe network container 4 outputs the compressed air to the axial flow fan 7, and the axial flow fan 7 drives the second generator 8 to synchronously generate power to the power grid through the exciter 9.
The pipe network container 4 is also connected with a safety valve 5 for overpressure exhaust.
As shown in fig. 2(a) - (b), the first generator 1 includes a machine head bracket 13 rotatably connected to the top end of the tower 16, one end of the machine head bracket 13 is connected to the bucket wheel 111, and the other end is connected to the housing of the permanent magnet generator 14, a rotating shaft 121 is arranged inside the machine head bracket 13, one end of the rotating shaft 121 is connected to the rotor 122, the other end passes through the machine head bracket 13 and is connected to the working end of the permanent magnet generator 13, an air duct 112 is arranged outside the rotor 122, and one end of the air duct 112 is connected to one end of the bucket wheel 111 away from the permanent magnet generator 14; the permanent magnet generator 14 is connected to a cable 17 located inside the tower 16.
The bucket wheel 111 is in the shape of a cylinder with two open ends and has an octagonal cross section, and the width of the opening of the bucket wheel 111 facing the permanent magnet generator 14 is not less than the width of the opening facing the air duct 112.
The connecting mechanism 15 at the top end of the tower 16 is used for realizing the rotation of the head bracket 13, and the connecting mechanism 15 is not limited to a specific structure.
In this embodiment, the rotor is free to rotate (longitudinally) relative to the handpiece under wind drive. The front and the back of the bucket wheel are octagonal polygons, the back octagonal is nested in the tail air duct, and the front of the bucket opening is large and the back is small, and the bucket opening is fixedly connected with the tail air duct. The rotor passes through the bucket wheel from the tail part and the head support to be connected with the rotor of the permanent magnet generator, and a winding outgoing line on the stator of the permanent magnet generator is switched into the tower through the machine head tower bearing conversion mechanism.
In this embodiment, after the oncoming wind is closed by the bucket wheel with a large front and a small rear, the air density is increased and the wind speed is accelerated, so that the rotor in the wind barrel is pushed to rotate at a high rotation speed, the rotor drives the permanent magnet rotor (working end) of the generator on the wind-coming side to rotate, and the stator coil is cut by the magnetic lines of force of the permanent magnet to generate electricity.
Because the bucket wheel has a larger front opening and a smaller rear opening, the drag characteristic of a parachute in dynamics is provided, and the opening of the bucket wheel is always opposite to the incoming wind direction, namely the opening of the bucket wheel 111 facing the permanent magnet generator 14 is always facing the incoming wind direction.
Therefore, the bucket wheel has a natural automatic windward stabilization mechanism, does not need yaw positioning control, and is matched with the double-duct rheological structure of the rotor in the embodiment, and the rotor is driven to rotate by wind resistance as shown in fig. 2 (b). It should be noted that the sliding friction force exists between the machine head and the tower due to the self gravity of the machine head equipment, and the transverse swinging force of the wind needs to overcome the self friction force of the machine head. The head of the machine still has a minimum wind force facing the wind. As long as the bucket wheel faces the wind, the rotor can rotate, and the motor can generate electricity. The wind power resource is utilized to the maximum extent.
The output frequency of the current and voltage of the electric energy generated by the bucket wheel wind driven generator is a variable frequency range which is changed along with the wind power, the lowest frequency is 0Hz, the highest frequency can reach hundreds of Hz, even kilohertz, and the maximum Hz number is mainly determined by the shape, the size, the wind speed, the shape of a rotor and the number of armatures of the permanent magnet generator. The larger the front opening of the bucket wheel is, the smaller the rear opening is, the larger the air density is, the higher the wind speed is, the faster the rotor speed is, the larger the generated power is, the larger the armature number is, the higher the frequency of the rotor cutting the magnetic line of force is, and the larger the generated power is. Therefore, the output power of the alternating current of the bucket-wheel generator is closely related to the electromechanical structure of the nose of the bucket-wheel generator. From the prior art, the armature of the AC generator has a single phase, a three-phase, a six-phase and a twelve-phase difference. The civil use is mostly single-phase, the industry is mainly three-phase, the nuclear power is six-phase, and the aircraft carrier submarine is mostly twelve-phase.
The first generator 1 adopts a bucket wheel structure to generate electric energy under the driving of wind power, drives the compressor 2 to charge compressed air into the pipe network container 4, the pipe network container 4 outputs the compressed air to the axial flow fan 7, and the axial flow fan 7 drives the second generator 8 to synchronously generate electricity to a power grid through the exciter 9.
As shown in fig. 3, the compressor 2 includes a transmission chain 23 connected to the output shaft of the motor 21, the transmission chain 23 is engaged with the rotating shaft of a transmission wheel, the transmission wheel drives a crankshaft connecting rod piston 25, the piston head of the crankshaft connecting rod piston 25 reciprocates in a cylinder 26, and the air outlet pipeline of the cylinder 26 is connected with the pipe network container 4.
The output shaft of the motor 21 is connected with a speed reducer 22, and the output shaft of the speed reducer 22 is connected with a transmission chain 23.
In this embodiment, the driving wheel is a left and right dual-wheel 24, which includes rotating wheels connected to two ends of the rotating shaft, and the center of the rotating shaft is engaged with the driving chain 23 to drive the rotating wheels at two ends to rotate synchronously.
The crankshaft connecting rod piston 25 includes crankshaft connecting rods having one end connected to the rotating wheels and the other end connected to the piston heads, and the rotating wheels are connected to the corresponding crankshaft connecting rods, respectively.
The piston head is provided with a cylinder inlet valve 28, and an air outlet pipeline of the cylinder 26 is connected with an air inlet valve 29 of an air storage tank.
A cooling tank 27 is connected to the outside of the cylinder 26, and a coolant is contained in the cooling tank 27.
In this embodiment, the electric motor 21 receives the electric energy generated by the first generator 1 or receives the electric energy of the power grid to rotate the output shaft, the rotation power is decelerated by the speed reducer 22 and then drives the left and right dual-rotating wheels 24 to rotate through the transmission chain 23, both the two rotating wheels of the left and right dual-rotating wheels 24 drive the crankshaft connecting rod piston 25 connected with each other to reciprocate in the cylinder 26, so as to compress the gas passing through the air inlet valve 28 of the cylinder, and the compressed gas is sent into the pipe network container 4 through the air inlet valve 29 of the air storage tank.
In this embodiment, the compression process of the gas brings heat, and the cooling liquid in the cooling tank 27 is used for cooling the cylinder 26.
The left and right double rotors 24 in this embodiment are rotors connected to both ends of a rotating shaft, and are designed to connect two sets of crankshaft connecting rod pistons 25 to increase the flow rate of gas compression.
In this embodiment, the motor (motor 21) drives the left and right double pulleys 24 to rotate through a chain, the left and right double pulleys 24 drive the crankshaft connecting rod to push the cylinder piston to reciprocate, the cylinder piston sucks air when moving upwards, the air inlet valve of the cylinder is closed and the air inlet valve of the air storage tank is opened when moving downwards, and air enters the air storage tank. The pistons in the two sets of cylinders move in opposite directions, for example, when the piston in the left cylinder moves downward, the piston in the right cylinder moves upward, so that the air tank intake is a continuous process as long as the motor 21 is operated.
In this embodiment, the electric power of the bucket-wheel wind power generator can directly drive the electric compressor (fig. 3) matched with the bucket-wheel wind power generator. Therefore, the motor ac of the electric compressor is variable frequency.
The variable-frequency electric compressor is used for inputting compressed air into a pipe network container by using a power supply generated by the wind driven generator, converting unstable electric energy into stable compressed air, absorbing the instability of wind power and then generating electric energy by using the axial flow fan generator set and sending the electric energy into a power grid. The pipeline at the bottom of the tower is provided with a pipe network container shutoff valve and an air exhaust valve, the pipe network container shutoff valve is used for blocking communication between air in the pipeline and air in the pipe network container during maintenance, and the air exhaust valve is used for exhausting compressed air in the fan pipeline during maintenance.
The pipe network container is a large-caliber sealed channel and is communicated with all air compressor pipelines, axial flow wind turbine inlets and air outlets of electric network electric compressors in the wind power plant. A plurality of overpressure and pressure relief safety valves can be arranged along the pipeline container, and the total capacity of the pipeline container is determined according to the wind energy storage target required in the continuous power generation time of the axial flow wind driven generator.
The axial flow wind generating set comprises an axial flow fan, a generator, an exciter and a control unit 6, high-pressure compressed air in a pipeline container flows through blades of the axial flow fan at high speed, the blades drive a rotor of the generator to rotate at high speed, the generator and the exciter are driven by the rotor, and the generator and the exciter are kept synchronous with a power grid under the control of the exciter. The control unit controls the rotating speed and the output of the axial flow fan by adjusting an inlet valve of the axial flow fan, and the generator keeps synchronous (50Hz) with the power grid.
The wind power generation mode changes the intermittent and discontinuous wind power generation mode into a controllable, stable and continuous power generation mode, compressed air is used as an energy storage medium, unstable wind power is converted into compressed air, and then stable and controllable axial flow fan generator sets are used for realizing power generation, so that the instability problem of wind power generation is solved, and the cost is lower.
After the capacity of the pipe network reaches a certain capacity, the generator set can have the functions of fast peak regulation, frequency regulation and black start. The reaction time is in seconds, is dozens of times faster than that of a gas generator in minutes, and is more than ten times faster than that of a thermal generator set for standby rotation (about 30 seconds).
Compared with the construction of a pumped storage power station with the same capacity, the construction cost is greatly reduced, and the cost-efficiency ratio of operation and maintenance is higher.
Compared with the existing wind power station mode, the single wind driven generator can be arranged in a dispersed mode, the structure is simple, each wind driven generator is easy to maintain without extra yaw control and pitch control, the axial flow wind driven generator set is centralized in equipment, the concentration of the equipment is improved, and the overall reliability and maintainability of the power generation device are improved.
The power networking mode of the power station is a synchronous mode, two conversion links of alternating current to direct current (AC/DC) and direct current to alternating current (DC/AC) which are necessary for an asynchronous mode are omitted, high-power electronic devices in the link are omitted, reliability is further improved, harmonic pollution sources of a power grid are reduced, and power quality is guaranteed.
The wind energy utilization efficiency of the axial flow fan is greatly improved, and the efficiency is multiple times of that of the existing wind driven generator.
The compressed air in the pipeline is used as a power air source, and can provide power for the operation of other purposes along the way, such as mechanical processing, ore machine operation, sand blowing and afforestation and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An air compression energy storage wind power generation system is characterized in that: the system comprises at least one group of gas compressors which are respectively connected to a pipe network container, wherein each group of gas compressors is connected with a first generator;
the air compressor is a variable frequency air compressor, the first generator is a wind power generator set, the first generator drives the air compressor to inflate a pipe network container under the action of wind power, the pipe network container outputs compressed air to the axial flow fan, and the axial flow fan drives the second generator to synchronously generate electricity to a power grid through the exciter.
2. An air compression energy storage wind power generation system according to claim 1, characterized in that: the first generator comprises a machine head support which is rotatably connected to the top end of the tower frame, one end of the machine head support is connected with the bucket wheel, the other end of the machine head support is connected with the shell of the permanent magnet generator, a rotating shaft is arranged in the machine head support, one end of the rotating shaft is connected with the rotor, the other end of the rotating shaft penetrates through the machine head support to be connected with the working end of the permanent magnet generator, an air duct is arranged on the outer side of the rotor, and one end of the air duct is connected with one end, far away from the permanent magnet generator, of the bucket wheel; the permanent magnet generator is connected with a cable positioned inside the tower.
3. An air compression energy storage wind power generation system according to claim 2, characterized in that: the bucket wheel is in a cylindrical shape with openings at two ends, and the cross section of the bucket wheel is octagonal.
4. An air compression energy storage wind power generation system according to claim 2, characterized in that: the opening width of the bucket wheel towards one side of the permanent magnet generator is not smaller than the opening width of the bucket wheel towards one side of the air duct.
5. An air compression energy storage wind power generation system according to claim 1, characterized in that: the gas compressor comprises a transmission chain connected to an output shaft of the motor, the transmission chain is meshed with a rotating shaft of a transmission wheel, the transmission wheel drives a crankshaft connecting rod piston, a piston head of the crankshaft connecting rod piston reciprocates in a cylinder, and a gas outlet pipeline of the cylinder is connected with a pipe network container.
6. An air compression energy storage wind power generation system according to claim 4, characterized in that: the output shaft of the motor is connected with the speed reducer, and the output shaft of the speed reducer is connected with the transmission chain.
7. An air compression energy storage wind power generation system according to claim 4, characterized in that: the transmission wheel comprises rotating wheels connected to two ends of a rotating shaft, and the center of the rotating shaft is meshed with the transmission chain to drive the rotating wheels at two ends to synchronously rotate.
8. An air compression energy storage wind power generation system according to claim 4, characterized in that: the crankshaft connecting rod piston comprises a crankshaft connecting rod, one end of the crankshaft connecting rod piston is connected to the rotating wheels, the other end of the crankshaft connecting rod piston is connected with the piston head, and the rotating wheels are respectively connected with the corresponding crankshaft connecting rods.
9. An air compression energy storage wind power generation system according to claim 7, characterized in that: and the piston head is provided with a cylinder inlet valve, and an air outlet pipeline of the cylinder is connected with an air inlet valve of an air storage tank.
10. An air compression energy storage wind power generation system according to claim 1, characterized in that: the pipe network container is also connected with a safety valve; the pipe network container is provided with a control unit, and the control unit is connected with the axial flow fan.
CN202210504448.1A 2022-05-10 2022-05-10 Air compression energy storage wind power generation system Pending CN114856914A (en)

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CN202210504448.1A CN114856914A (en) 2022-05-10 2022-05-10 Air compression energy storage wind power generation system

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
CN114856914A true CN114856914A (en) 2022-08-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210504448.1A Pending CN114856914A (en) 2022-05-10 2022-05-10 Air compression energy storage wind power generation system

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Country Link
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