CN220319731U - Offshore wind power generation single pile foundation structure with pumped storage function - Google Patents
Offshore wind power generation single pile foundation structure with pumped storage function Download PDFInfo
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- CN220319731U CN220319731U CN202321842429.6U CN202321842429U CN220319731U CN 220319731 U CN220319731 U CN 220319731U CN 202321842429 U CN202321842429 U CN 202321842429U CN 220319731 U CN220319731 U CN 220319731U
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- 238000010248 power generation Methods 0.000 title claims abstract description 46
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- 238000005192 partition Methods 0.000 claims description 8
- 239000013535 sea water Substances 0.000 abstract description 6
- 238000005381 potential energy Methods 0.000 abstract description 3
- 238000004146 energy storage Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
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Abstract
The utility model relates to a single pile foundation structure with a pumped storage function for offshore wind power generation, which comprises the following components: the wind power generation device is communicated with a power grid; the exhaust channel is arranged at the upper part of the water storage cavity, and an exhaust valve is arranged in the exhaust channel; the water inlet pipe is arranged at the lower part of the water storage cavity, a water inlet valve is arranged in the water inlet pipe, and a water pump is arranged in a water inlet path of the water inlet pipe; the water inlet pipe is arranged at the lower part of the water storage cavity, a water outlet valve is arranged in the water outlet pipe, a water turbine generator is arranged in a water outlet path of the water outlet pipe, and the water turbine generator is communicated with a power grid; and the controller is electrically connected with the wind power generation equipment, the exhaust valve, the water inlet valve and the water outlet valve respectively. Based on different power supply states of the wind power generation equipment, the sea water potential energy can be stored or converted into electric energy, so that the impact of unstable wind power generation on a power grid is effectively reduced.
Description
Technical Field
The utility model relates to the field of offshore wind power generation, in particular to an offshore wind power generation single pile foundation structure with a pumped storage function.
Background
In the past decade, china has rapidly evolved into a major offshore wind farm market and over the United kingdom in 2021, has become the world's largest offshore wind farm production country. By the next half of 2022, the installed capacity of offshore wind power in China will increase by 12%. The wind power generation system has the advantages that the wind power at sea rapidly develops and simultaneously has a plurality of challenges, wherein due to the characteristics of wind power generation, wind speed has randomness and intermittence, so that the output of the wind power generation system has larger fluctuation, and the electric energy generated by the wind power at sea is energy which is difficult to store, and the situation that the wind power generation is not matched with the power supply requirement is often caused. Therefore, how to improve the power supply stability of the wind driven generator, solve the key technology of large-scale access and wind abandonment of renewable energy sources, reduce the impact of wind power integration on a power grid system, and be a difficult problem to be solved urgently in the technical field of offshore wind power. The related document issued by 2 months of 2022 proposes that by 2025, the novel energy storage step into a large-scale development stage from the early stage of commercialization and has large-scale commercialization application conditions. The method is characterized by promoting large-scale offshore wind power development and consumption, combining with large-scale offshore wind power base development in areas such as Guangdong, fujian, jiangsu, zhejiang, shandong and the like, developing novel energy storage research of offshore wind power configuration, reducing capacity requirements of offshore wind power collection transmission channels, and improving offshore wind power consumption and utilization level and capacity supporting capacity.
At present, energy storage can be divided into mechanical energy storage, electrochemical energy storage and electromagnetic energy storage. The most common mechanical energy storage is pumped storage and compressed air storage.
Compared with electrochemical, electromagnetic and compressed air energy storage, pumped storage has the advantages of mature technology, high load response speed, good regulation capability, low cost, long service life and the like, and the efficiency of the pump storage can reach 65-75 percent, and can reach 80-85 percent at most. Meanwhile, rich seawater resources can be utilized. However, pumped storage often has the problems of complex system and huge large-scale investment, and the difficulty of construction is increased in marine environment.
In addition, the single pile foundation is usually used as a supporting structure of the wind power generation equipment, the structure of the single pile foundation is an open-bottom structure, and after the single pile foundation is penetrated into the seabed, the seawater, the seabed sludge and the living things at the original positions can remain in the single pile foundation, so that the inside of the foundation is in a sealed environment, the metabolism of anaerobic bacteria is further promoted, and a large amount of corrosive gas is generated. The corrosive gas is rich in hydrogen sulfide, sulfur dioxide, ammonia gas and the like, so that electrical and mechanical equipment in the tower barrel are corroded, and even the health problem of operation and maintenance personnel is influenced. This has become a common difficulty with single pile foundations.
Disclosure of Invention
First, the technical problem to be solved
In order to solve the problems in the prior art, the utility model provides an offshore wind power generation single pile foundation structure with a pumped storage function.
(II) technical scheme
In order to achieve the above purpose, the technical scheme adopted by the utility model comprises the following steps: the utility model provides a take marine wind power generation single pile foundation structure of pumped storage function, includes:
the wind power generation system comprises a single pile foundation, wherein a water storage cavity is formed in the single pile foundation, and wind power generation equipment is arranged at the upper part of the single pile foundation and communicated with a power grid;
the water inlet pipe is arranged at the lower part of the water storage cavity, a water inlet valve is arranged in the water inlet pipe, and a water pump is arranged in a water inlet path of the water inlet pipe;
the water inlet pipe is arranged at the lower part of the water storage cavity, a water outlet valve is arranged in the water outlet pipe, a hydraulic generator is arranged in a water outlet path of the water outlet pipe, and the hydraulic generator is communicated with the power grid;
and the controller is electrically connected with the wind power generation equipment, the water inlet valve and the water outlet valve respectively.
Further, the single pile foundation is of a pipe body structure, a partition plate and a water stop plate are respectively arranged at the upper part and the lower part in the single pile foundation, and the water storage cavity is formed between the partition plate and the water stop plate.
(III) beneficial effects
The beneficial effects of the utility model are as follows:
1. the wind power generation and the seawater energy storage are effectively combined. When the supply of wind power generation is greater than demand, namely the power supply state is in an excess state, converting part of generated electric energy into sea water potential energy to store energy in the single pile foundation; when the wind power generation supply is smaller than the demand, namely the power supply state is in an insufficient state, the sea water potential energy is converted into electric energy, and the hydraulic generator and the wind power generation equipment work synchronously. Therefore, the impact of unstable wind power generation on the power grid can be effectively reduced.
2. And storing energy by using the single pile foundation structure. The single pile foundation is the foundation form with the widest application range of the current offshore wind power in China, the single pile foundation accounts for about 80 percent, and the single pile foundation has a great development prospect. Meanwhile, the single pile foundation structure is simple, the single pile foundation structure is arranged in an atmosphere area and an underwater area, no other equipment is arranged in the single pile foundation structure, the space is huge, and the single pile foundation structure has the natural advantage of realizing pumped storage. Meanwhile, the single pile foundation structure is used as a carrier of the pumped storage space, so that the construction difficulty and the investment amount can be greatly reduced, and the method has good economical efficiency.
3. Through utilizing the pumped storage equipment, can effectively realize the circulation of the water in the stake, in addition at the inside in-process of intaking or going out water of single pile foundation, can replace stake internal gas and external gas, reduce anaerobic bacteria's metabolism, keep the cleanness of stake internal environment, avoid producing a large amount of harmful gas. Therefore, the problem of storing a large amount of harmful gas in the single pile foundation can be effectively solved when the single pile foundation is utilized for pumped storage.
Drawings
FIG. 1 is a schematic structural view of a single pile foundation structure of offshore wind power generation with pumped storage function of the utility model;
FIG. 2 is a flow chart of the working principle in the first embodiment;
[ reference numerals description ]
1. A wind power plant; 2. a fan tower; 3. a foundation roof; 4. a water storage cavity; 5. a partition plate; 6. a single pile foundation; 7. an exhaust passage; 8. an exhaust valve; 9. a water inlet pipe; 10. a water inlet valve; 11. a water outlet pipe; 12. a water outlet valve; 13. a water pump; 14. a hydro-generator; 15. a water-stop plate; 16. sea level.
Detailed Description
The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.
Example 1
Referring to fig. 1, the offshore wind power generation single pile foundation 6 structure with the pumped storage function comprises:
the wind power generation system comprises a single pile foundation 6, wherein a water storage cavity 4 is formed in the single pile foundation 6, wind power generation equipment 1 is supported at the upper part of the single pile foundation 6, and the wind power generation equipment 1 is communicated with a power grid;
the exhaust channel 7 is arranged at the upper part of the water storage cavity 4, an exhaust valve 8 is arranged in the exhaust channel 7, and the exhaust channel 7 is preferably at a position close to the top of the water storage cavity 4 so as to ensure more sufficient water storage space;
the water inlet pipe 9 is arranged at the lower part of the water storage cavity 4, a water inlet valve 10 is arranged in the water inlet pipe 9, and a water pump 13 is arranged in a water inlet path of the water inlet pipe 9;
the water outlet pipe 11, the water inlet pipe 9 is arranged at the lower part of the water storage cavity 4, a water outlet valve 12 is arranged in the water outlet pipe 11, a water generator 14 is arranged in a water outlet path of the water outlet pipe 11, and the water generator 14 is communicated with the power grid;
and the controller is electrically connected with the wind power generation equipment 1, the exhaust valve 8, the water inlet valve 10 and the water outlet valve 12 respectively.
The single pile foundation 6 is of a pipe body structure, a partition plate 5 and a water-stop plate 15 are respectively arranged at the upper part and the lower part in the single pile foundation 6, and a water storage cavity 4 is formed between the partition plate 5 and the water-stop plate 15.
Specifically, as shown in fig. 1, the single pile foundation 6 is connected with a foundation top 3, the foundation top 3 is connected with a wind turbine tower 2, the wind turbine tower 2 is connected with a wind power generation device 1, the wind power generation device is a wind power generation structure commonly used in the market, and the partition plate 5 is fixed below the foundation top 3.
Preferably, the controller may be a single-chip microcomputer, a PLC or the like, and may realize the functions of signal processing and control, the type of the controller is not limited, the power supply of the controller may be battery powered, or the external transformer may directly supply power through the wind power generation device 1, or the wind power generation device 1 may charge the battery, which is not limited herein. The connection mode of the controller and other electronic components can be wire electric connection or wireless connection.
As shown in fig. 2, the working principle of the present utility model is as follows:
the controller receives a power supply signal sent by the wind power generation equipment 1 and judges the power supply state of the wind power generation equipment 1:
if the power supply state is a normal state, that is, if the wind power is normal, the controller controls the exhaust valve 8, the water inlet valve 10 and the water outlet valve 12 to be in an open state, the controller controls the wind power generation equipment 1 to supply power to a power grid with rated electric energy, at the moment, water bodies inside and outside the single pile foundation 6 are communicated, and the water head in the water storage cavity 4 is the same as the water head at the sea level; specifically, this state is also the initial state of the monopile foundation 6.
If the power supply state is in an excessive state, that is, if wind power is large, the controller controls the wind power generation equipment 1 to supply power to the power grid by rated power, and transmits the excessive part of power to the water supply pump 13 to supply power, the controller controls the water inlet valve 10, the water pump 13 and the air outlet valve 8 to be in an open state, and controls the water outlet valve 12 to be in a closed state so as to perform pumped storage operation, and after pumped storage is completed, the controller controls the water inlet valve 10, the water pump 13 and the air outlet valve 8 to be in a closed state; the water pumping and energy storage operation can be judged to be completed by arranging a water level sensor in the single pile foundation 6, or other sensors for monitoring the water level change can be used, and the water pumping and energy storage operation is judged to be completed after the water level is monitored to reach the preset position. On this basis, the exhaust channel 7 should be arranged above the preset position to ensure the exhaust effect of the water storage cavity 4 in the mono-pile foundation 6.
If the power supply state is in an insufficient state, that is, if the wind power is small, the controller controls the wind power generation equipment 1 to supply all the electric energy to the power grid, the controller controls the water inlet valve 10 to be in a closed state, and controls the air outlet valve 8 and the water outlet valve 12 to be in an open state, and by utilizing the water head difference between the inside and the outside of the single pile foundation 6, the water stored in the water storage cavity 4 is discharged to the water outlet pipe 11 to drive the hydraulic generator 14 to generate power, and the controller controls the hydraulic generator 14 and the wind power generation equipment 1 to supply power to the power grid together.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (2)
1. Take marine wind power generation single pile foundation structure of pumped storage function, its characterized in that includes:
the wind power generation system comprises a single pile foundation, wherein a water storage cavity is formed in the single pile foundation, and wind power generation equipment is arranged at the upper part of the single pile foundation and communicated with a power grid;
the water inlet pipe is arranged at the lower part of the water storage cavity, a water inlet valve is arranged in the water inlet pipe, and a water pump is arranged in a water inlet path of the water inlet pipe;
the water inlet pipe is arranged at the lower part of the water storage cavity, a water outlet valve is arranged in the water outlet pipe, a hydraulic generator is arranged in a water outlet path of the water outlet pipe, and the hydraulic generator is communicated with the power grid;
and the controller is electrically connected with the wind power generation equipment, the water inlet valve and the water outlet valve respectively.
2. The offshore wind power generation single pile foundation structure with the pumped storage function according to claim 1, wherein the single pile foundation is of a pipe body structure, a partition plate and a water stop plate are respectively arranged at the upper part and the lower part in the single pile foundation, and the water storage cavity is formed between the partition plate and the water stop plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321842429.6U CN220319731U (en) | 2023-07-13 | 2023-07-13 | Offshore wind power generation single pile foundation structure with pumped storage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321842429.6U CN220319731U (en) | 2023-07-13 | 2023-07-13 | Offshore wind power generation single pile foundation structure with pumped storage function |
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| Publication Number | Publication Date |
|---|---|
| CN220319731U true CN220319731U (en) | 2024-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321842429.6U Active CN220319731U (en) | 2023-07-13 | 2023-07-13 | Offshore wind power generation single pile foundation structure with pumped storage function |
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| Country | Link |
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| CN (1) | CN220319731U (en) |
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2023
- 2023-07-13 CN CN202321842429.6U patent/CN220319731U/en active Active
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