CN117365847A - Wind power generation equipment capable of storing energy by gravity and control system thereof - Google Patents

Abstract

The invention discloses a wind power generation equipment capable of gravity energy storage and its control system, which includes a fan support column and a support frame. A wind generator is installed on the top of the fan support column. Fan blades are installed on the wind generator. The fan support column is A connecting base is installed at the bottom. The wind power generation equipment converts excess electric energy into gravitational potential energy for storage during peak power generation. During low power generation peaks, the control system converts gravitational potential energy into electrical energy to supplement the power grid, thus Avoid the loss of electric energy, allow electric energy to be used rationally, avoid resource waste, and solve the problem of unstable power output caused by wind power generation affected by weather. The use of gravity energy storage has higher safety and security than traditional chemical energy storage. Reliable and more durable, gravity energy storage phase chemical energy storage is very environmentally friendly, achieving carbon peak and "carbon neutrality" goals. The overall equipment has strong stability and performance, and is more reliable in the marine environment.

Description

A kind of wind power generation equipment capable of gravity energy storage and its control system

Technical field

The invention relates to the technical field of wind power generation, specifically a wind power generation equipment capable of gravity energy storage and a control system thereof.

Background technique

Wind power generation refers to converting the kinetic energy of wind into electrical energy. my country is rich in wind energy resources. The developable wind energy reserves are about 1 billion kW. Among them, the onshore wind energy reserves are about 253 million kW (calculated from the data at a height of 10m above the ground on land). The offshore wind energy reserves that can be developed and utilized are about 750 million kW. A total of 1 billion kW. Existing wind power generation equipment at sea or on land generates large amounts of electricity when encountering strong winds. During low peak periods of electricity consumption, a lot of electricity cannot be stored, resulting in a waste of electricity. Even if there is storage on the market, it is not possible. Storage is done chemically, which is not only expensive but also unfriendly to the environment.

Chinese invention CN201710949346. The surplus electric energy is used to drive the air compressor of the air compression and expansion power generation unit to charge high-pressure air into the submarine high-pressure air energy storage device; when the grid load increases and the offshore wind turbine load cannot meet the grid demand, the submarine high-pressure air storage device is released. The high-pressure air in the energy device works through the expander of the air compression and expansion power generation unit to drive the generator to generate electricity to increase the power load provided to the power grid. This invention can use compressed air to store energy and consume excess power when the wind is strong and the load demand of the power grid is low. When the wind is low or the load demand of the power grid is high, the compressed air stored on the seabed can be used to expand and perform work to provide power to the power grid. Realize the power regulation function of wind power generation system.

This method generates electricity through the expansion of compressed air. This equipment costs a lot, and it is difficult to ensure the sealing of the submarine high-pressure air energy storage device. The maintenance cost is high, and the stability cannot be well guaranteed.

Chinese invention CN202210470526.0 An energy storage device for offshore wind power generation, which includes: a main body, a wind turbine is provided on the main body; an energy storage floating body, the energy storage floating body floats on the sea, and the energy storage floating body floats on the sea. The floating body is connected to the wind power generator through a transmission device; a discharge device is electrically connected to the wind power generator; when the wind power generator generates excess power, the wind power generator transfers excess electric energy to the discharge device Equipment, the discharge equipment drives the energy storage floating body to sink; when the wind turbine generates insufficient power, the energy storage floating body floats up and drives the wind turbine to rotate and generate electricity through the transmission device. It can sink the originally floating energy storage floating body when wind power generation is abundant, and then store electrical energy as buoyancy potential energy. At the same time, when wind power generation is insufficient, the release of buoyancy potential energy can be converted into electrical energy, reducing the volatility of wind power generation and reducing the impact on wind power generation. Grid impact.

The device uses an energy storage floating body to float up to generate electricity, and the energy storage floating body sinks to store energy. This method requires high quality of the energy storage floating body. Under the action of water pressure, the manufacturing cost of the energy storage floating body is high, and the energy storage floating body is used for a long time. It is easy to be damaged and has high maintenance costs. The floating energy storage floating body drives the power generation fan to rotate. It requires greater buoyancy potential energy to drive the fan blades to rotate, and the power generation effect is poor. For this purpose, a wind power generation equipment that can store gravity energy and its Control System.

Contents of the invention

The purpose of the present invention is to address the shortcomings of the prior art and provide a wind power generation equipment capable of gravity energy storage, so as to solve the problems raised by the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solution: a wind power generation equipment capable of gravity energy storage, including a fan support column and a support frame. A wind generator is installed on the top of the fan support column, and a wind generator is installed on the wind generator. There are fan blades, a connecting base is installed at the bottom of the fan support column, a first movable groove and a second movable groove are provided in the middle of the support frame, and a first fixed pulley is installed at the top of the first movable groove. A second fixed pulley is installed on the top of the second movable groove, a first steel cable rewinding box is installed on one side of the first fixed pulley, and a second steel cable rewinding box is installed on one side of the second fixed pulley. box, the bottom of the support frame is provided with a base steel plate, the base steel plate is fixed on the embedded parts in the concrete foundation, and the first movable groove and the second movable groove are provided with roller grooves on both sides, so Limiting platforms are welded on one side of the top of the first movable groove and the second movable groove.

As a preferred technical solution of the present invention, a hydraulic cylinder is installed on the limiting platform through bolts, and a limiting block is installed on one end of the hydraulic cylinder through bolts. The hydraulic cylinder communicates with the hydraulic oil pump in the hydraulic oil tank through a hydraulic oil pipe. connected.

As a preferred technical solution of the present invention, a mechanical generator is installed inside the first steel cable rewinding box and the second steel cable rewinding box, and a steel cable storage groove is provided on one side of the mechanical generator. , a steel cable rewinding rod is installed through a bearing in the middle of the steel cable storage groove, one end of the steel cable rewinding rod is connected to a reduction box, and a motor is installed on one side of the reduction box, and the steel cable rewinding rod A steel cable is wound around the rod, one end of the steel cable is connected to a counterweight, and rollers matching the roller grooves are installed on both sides of the counterweight.

As a preferred technical solution of the present invention, the mechanical generator is connected to the steel cable rewinding rod, the mechanical generator and the reduction gearbox are installed on the end face of the steel cable storage groove through bolts, and the motor is installed through bolts On the reduction box, the steel cable passes through the first fixed pulley and the second fixed pulley and is connected to the counterweight.

As a preferred technical solution of the present invention, the fan support column is welded and connected to the connection base, the wind turbine is installed on the top of the fan support column through bolts, and the connection base is welded to the support frame.

As a preferred technical solution of the present invention, the connecting base and the limiting platform are connected by welding through connecting rods, and the first steel cable rewinding box and the second steel cable rewinding box are both installed on the limiting platform through bolts. between the platform and the connecting base.

As a preferred technical solution of the present invention, the wind generator is connected to the power grid, the motor and the hydraulic control system through a transformer and a converter, and the mechanical generator is connected to the power grid through a transformer and a converter.

A control system for wind power equipment capable of gravity energy storage, including an electric energy monitoring system connected to a transformer of a wind turbine. The electric energy monitoring system includes an electric energy acquisition module, an electric energy judgment module, and an electric energy storage module. and an electric energy supplement module; the electric energy collection module is connected to the electric energy judgment module, the electric energy judgment module is connected to the electric energy storage module and the electric energy supplement module respectively, the electric energy storage module is connected to the motor and the hydraulic control system respectively, the The electric energy supplement module is connected to the hydraulic control system.

The beneficial effects of the present invention are: the wind power generation equipment converts excess electric energy into gravitational potential energy for storage when power generation peaks, and converts gravitational potential energy into electric energy through the control system to supplement the power grid during low power generation times. This avoids the loss of electric energy, allows electric energy to be used rationally, avoids waste of resources, and solves the problem of unstable power output due to the influence of weather in wind power generation. Gravity energy storage is safer than traditional chemical energy storage. It is more reliable and more durable. Gravity energy storage phase chemical energy storage is very environmentally friendly, achieving the goal of reaching carbon peak and "carbon neutrality". The overall equipment has strong stability and performance, and is more reliable in the marine environment.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic structural diagram of the support frame of the present invention;

Figure 3 is a schematic structural diagram of the first steel cable rewinding box and the second steel cable rewinding box of the present invention;

Figure 4 is a schematic structural diagram of the limiting platform of the present invention;

Figure 5 is a schematic structural diagram of the counterweight block of the present invention;

Figure 6 is a circuit module diagram of the present invention;

Figure 7 is a structural diagram of the power monitoring system of the present invention;

Figure 8 is a module diagram of the power monitoring system of the present invention.

In the picture: fan support column 1, wind generator 2, fan blade 3, connecting base 4, support frame 5, first movable groove 6, second movable groove 7, first fixed pulley 8, first steel cable rewinding box 9. Mechanical generator 901, reduction box 902, motor 903, wire rope storage slot 904, wire rope 905, wire rope rewinding rod 906, bearing 907, second fixed pulley 10, second wire rope rewinding box 11, roller Trough 12, counterweight block 13, roller 1301, embedded parts 14, concrete foundation 15, base steel plate 16, limit platform 17, hydraulic cylinder 1701, limit block 1702.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those in the art, and the protection scope of the present invention can be more clearly defined.

Embodiment: Please refer to Figures 1-8. The present invention provides a technical solution: a wind power generation equipment capable of gravity energy storage, including a fan support column 1 and a support frame 5. A wind turbine is installed on the top of the fan support column 1. 2. A fan blade 3 is installed on the wind turbine 2. A connecting base 4 is installed at the bottom of the fan support column 1. A first movable slot 6 and a second movable slot 7 are provided in the middle of the support frame 5. The first movable slot 6 A first fixed pulley 8 is installed on the top, a second fixed pulley 10 is installed on the top of the second movable groove 7, a first steel cable rewinding box 9 is installed on one side of the first fixed pulley 8, and one side of the second fixed pulley 10 is installed on the top. A second steel cable rewinding box 11 is installed on the side. The bottom of the support frame 5 is provided with a base steel plate 16. The base steel plate 16 is fixed on the embedded parts 14 in the concrete foundation 15. The first movable groove 6 and the second movable groove There are roller grooves 12 on both sides of the first movable groove 6 and the second movable groove 7, and a limiting platform 17 is welded on one side of the top of the first movable groove 6 and the second movable groove 7.

A hydraulic cylinder 1701 is installed on the limiting platform 17 through bolts. One end of the hydraulic cylinder 1701 is installed with a limiting block 1702 through bolts. The hydraulic cylinder 1701 is connected to the hydraulic oil pump in the hydraulic oil tank through a hydraulic oil pipe.

A mechanical generator 901 is installed inside the first steel cable rewinding box 9 and the second steel cable rewinding box 11. A steel cable storage slot 904 is provided on one side of the mechanical generator 901, and the middle part of the steel cable storage slot 904 passes through The bearing 907 is equipped with a steel cable retracting rod 906. One end of the steel cable retracting rod 906 is connected to a reduction box 902. A motor 903 is installed on one side of the reduction box 902. A steel cable 905 is wound around the steel cable retracting rod 906. One end of the cable 905 is connected to the counterweight block 13 , and rollers 1301 matching the roller groove 12 are installed on both sides of the counterweight block 13 .

The mechanical generator 901 is connected to the steel cable retracting rod 906. The mechanical generator 901 and the reduction box 902 are both installed on the end face of the steel cable storage slot 904 through bolts. The motor 903 is installed on the reduction box 902 through bolts, and the steel cable 905 passes through It is connected with the counterweight block 13 through the first fixed pulley 8 and the second fixed pulley 10.

The fan support column 1 is welded and connected to the connection base 4. The wind turbine 2 is installed on the top of the fan support column 1 through bolts. The connection base 4 is welded to the support frame 5.

The connecting base 4 and the limiting platform 17 are connected by welding through connecting rods. The first steel cable retracting box 9 and the second steel cable retracting box 11 are installed between the limiting platform 17 and the connecting base 4 through bolts.

The wind turbine 2 is connected to the power grid, the motor 903 and the hydraulic control system through transformers and converters, and the mechanical generator 901 is connected to the power grid through transformers and converters.

A control system for wind power equipment capable of gravity energy storage, including an electric energy monitoring system connected to a transformer of a wind turbine. The electric energy monitoring system includes an electric energy acquisition module, an electric energy judgment module, an electric energy storage module and an electric energy supplement module. ; The electric energy acquisition module is connected to the electric energy judgment module, the electric energy judgment module is connected to the electric energy storage module and the electric energy supplement module respectively, the electric energy storage module is connected to the motor 903 and the hydraulic control system respectively, and the electric energy supplement module is connected to the hydraulic control system.

Working principle: A kind of wind power generation equipment that can store gravity energy. When used, the wind blows the fan blade 3 to rotate, thereby driving the wind turbine 2 to rotate, thereby generating electricity, thus supplying power to the power grid. Through the power monitoring system, The electric energy acquisition module collects the output voltage of the wind turbine 2, and then passes the electric energy judgment module. When the voltage is too large, the excess current is controlled through the electric energy storage module to control the operation of the motor 903, allowing the motor 903 to drive The gear in the reduction box 902 rotates, thereby driving the steel cable rewinding rod 906 to rotate around the bearing 907, thereby rewinding the steel cable 905, and using the rewinding of the steel cable 905 to raise the counterweight 13 to a suitable position. When the block 13 is rising, the roller 1301 is used to roll in the roller groove 12, which not only reduces resistance, but also ensures that the counterweight block 13 will not shake. The first steel cable rewinding box 9 and the second steel cable rewinding box are used After the motor 903 in 11 works to raise the counterweight 13 to a suitable height, the hydraulic oil pump is controlled through the hydraulic control system to supply oil to the hydraulic cylinder 1701, allowing the hydraulic cylinder 1701 to extend the limit block 1702, thereby matching the The weight 13 is limited to convert excess electric energy into gravitational potential energy. When the electric energy judgment module judges that the wind power energy is lower than the standard value, it will control the operation of the hydraulic control system through the electric energy supplement module, thereby controlling the operation of the hydraulic oil pump. Thereby, the hydraulic oil in the hydraulic cylinder 1701 is sucked into the hydraulic oil tank, thereby pulling the limit block 1702 out from the bottom of the counterweight block 13. The counterweight block 13 drops rapidly under the action of its own gravity, thereby driving the steel The cable rewinding rod 906 rotates, and the steel cable rewinding rod 906 is used to rotate to drive the mechanical generator 901 to generate mechanical power, thereby transmitting the electric energy to the power grid through the transformer to achieve the purpose of supplementing electric energy.

The wind power generation equipment converts excess electric energy into gravitational potential energy for storage when power generation peaks. During low power generation peaks, the control system converts gravitational potential energy into electric energy to supplement the power grid, thereby avoiding the loss of electric energy and allowing Electric energy is utilized rationally to avoid resource waste, and solves the problem of unstable power output caused by wind power generation affected by weather. Gravity energy storage is safer, more reliable and more durable than traditional chemical energy storage. Gravity energy storage phase chemical energy storage is quite friendly to the environment, achieving carbon peak and "carbon neutrality" goals. The overall equipment has strong stability and performance, and is more reliable in the marine environment.

The above embodiments only express several embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (8)

1. Wind power generation equipment capable of storing energy by gravity comprises a fan supporting column (1) and a supporting frame (5), and is characterized in that: wind-driven generator (2) are installed at the top of fan support column (1), install flabellum (3) on wind-driven generator (2), connect base (4) are installed to the bottom of fan support column (1), the middle part of support frame (5) is equipped with first movable groove (6) and second movable groove (7), first fixed pulley (8) are installed at the top of first movable groove (6), second fixed pulley (10) are installed at the top of second movable groove (7), first cable wind-up case (9) are installed to one side of first fixed pulley (8), second cable wind-up case (11) are installed to one side of second fixed pulley (10), the bottom of support frame (5) is equipped with base steel sheet (16), on embedded part (14) in concrete foundation (15) are fixed to base steel sheet (16), both sides of first movable groove (6) and second movable groove (7) all are equipped with gyro wheel groove (12), first movable groove (6) and one side of second movable groove (7) all have spacing (17) of welding.

2. A gravity energy storage wind power plant according to claim 1, wherein: the hydraulic oil pump is characterized in that a hydraulic cylinder (1701) is mounted on the limiting platform (17) through a bolt, a limiting block (1702) is mounted at one end of the hydraulic cylinder (1701) through a bolt, and the hydraulic cylinder (1701) is connected with a hydraulic oil pump in a hydraulic oil tank through a hydraulic oil pipe.

3. A gravity energy storage wind power plant according to claim 1, wherein: the inside of first cable winding case (9) and second cable winding case (11) is all installed mechanical generator (901), one side of mechanical generator (901) is equipped with cable storage tank (904), cable winding pole (906) are installed through bearing (907) in the middle part in cable storage tank (904), one end of cable winding pole (906) is connected with reducing gear box (902), motor (903) are installed to one side of reducing gear box (902), the winding has cable (905) on cable winding pole (906), one end of cable (905) links to each other with balancing weight (13), gyro wheel (1301) with gyro wheel groove (12) assorted are all installed to the both sides of balancing weight (13).

4. A gravity energy storage wind power plant according to claim 3, wherein: the mechanical generator (901) is connected with the steel cable winding rod (906), the mechanical generator (901) and the reduction gearbox (902) are mounted on the end face of the steel cable accommodating groove (904) through bolts, the motor (903) is mounted on the reduction gearbox (902) through bolts, and the steel cable (905) passes through the first fixed pulley (8) and the second fixed pulley (10) to be connected with the balancing weight (13).

5. A gravity energy storage wind power plant according to claim 1, wherein: the wind driven generator is characterized in that the fan support column (1) is connected with the connecting base (4) in a welding mode, the wind driven generator (2) is mounted on the top of the fan support column (1) through bolts, and the connecting base (4) is connected with the supporting frame (5) in a welding mode.

6. A gravity energy storage wind power plant according to claim 1, wherein: the connecting base (4) is connected with the limiting platform (17) through a connecting rod in a welding mode, and the first steel cable winding box (9) and the second steel cable winding box (11) are installed between the limiting platform (17) and the connecting base (4) through bolts.

7. A gravity energy storage wind power plant according to claim 1, wherein: the wind driven generator (2) is connected with a power grid, a motor (903) and a hydraulic control system through a transformer and a converter, and the mechanical generator (901) is connected with the power grid through the transformer and the converter.

8. A control system for a gravity energy storage wind power plant according to claim 1, wherein: the system comprises an electric energy monitoring system, wherein the electric energy monitoring system is connected with a transformer of a wind driven generator and comprises an electric energy acquisition module, an electric energy judging module, an electric energy storage module and an electric energy supplementing module; the electric energy collection module is connected with the electric energy judgment module, the electric energy judgment module is respectively connected with the electric energy storage module and the electric energy supplementing module, the electric energy storage module is respectively connected with the motor (903) and the hydraulic control system, and the electric energy supplementing module is connected with the hydraulic control system.