CN210290007U - Indirect cooling type offshore air energy storage type wind power generation system - Google Patents
Indirect cooling type offshore air energy storage type wind power generation system Download PDFInfo
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- CN210290007U CN210290007U CN201921279585.XU CN201921279585U CN210290007U CN 210290007 U CN210290007 U CN 210290007U CN 201921279585 U CN201921279585 U CN 201921279585U CN 210290007 U CN210290007 U CN 210290007U
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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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- 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
- Y02E10/727—Offshore wind turbines
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The utility model discloses an indirect cooling type offshore air energy storage type wind power generation system, including aerogenerator, float formula platform, the fixed hawser, the air turbine, high pressure and low pressure air compressor machine, a heat exchanger, horizontal pipeline, the pipeline under water, the gasbag, turbine inlet and outlet pipeline, shut-off valve and fan cable, realize converting the surplus electric energy that offshore wind power produced into compressed gas energy, store to the gasbag under water, when the electric energy that offshore wind power produced is not enough or can't produce the electric energy, promote air turbine with the compressed air in the gasbag under water and do work, convert the air compression energy into the electric energy, provide the electric energy to the electric wire netting, make offshore wind power generation group self have certain power regulatory ability, solve the current offshore wind power fluctuation of electric power too big and arouse the difficult problem of the impact to the electric wire netting; the utility model has the advantages of gasbag constant voltage output gas volume, make power output more steady than air energy storage power station turbine output characteristic on land, adopt gasbag reduce cost simultaneously, and do not occupy the land space.
Description
Technical Field
The utility model relates to an offshore wind power generation and air energy storage technology's alternately field, concretely relates to offshore air energy storage type wind power generation system of indirect cooling type.
Background
The offshore wind power technology is an advanced clean energy technology utilizing offshore wind energy, the offshore wind energy has the characteristics of large total reserve and long usable hours, and the power output of the offshore wind power is unstable under the influence of offshore wind speed fluctuation, so that the offshore wind power has systematic impact on a power grid system. In order to solve the problem that the offshore wind power output is not matched with the power grid requirement, a pumped storage power station, an air energy storage power station or a battery energy storage power station with a certain proportion needs to be configured in an offshore wind farm or a power grid. However, the pumped storage power station needs to be built by depending on the terrain and water source; the energy density of air energy storage is low, so the required air storage volume of an onshore air energy storage power station is large, if the cost of a metal air storage tank is too high, a waste gas mine is generally adopted as the volume for storing air, so the construction of the air energy storage power station has limited air storage regions, and when the pressure for storing gas is reduced, the power output of a turbine is unstable; the principle of the battery energy storage power station is simple, although the battery energy storage power station does not depend on the terrain, the technology is not mature and stable enough, the uniform standard is not formed in the industry, and the conventional battery energy storage power station has short service life, high construction cost and is easy to cause severe accidents. If the compressed air energy storage and the offshore wind power generation set can be combined, and the compressed air is stored in the air bag below the sea level, the stability of the power output of the offshore wind power generation set can be improved, so that the output power of the offshore wind power generation set has the adjusting capacity in a certain range, the impact of the offshore wind power on the power grid can be reduced, and the requirements of the power grid on the construction and peak shaving of a pumped storage power station, a land air energy storage power station or a battery energy storage power station are reduced. At present, no effective technical scheme can realize real-time power matching and adjustment of offshore wind power output and power grid demand fluctuation. If a technology can be developed, the offshore wind power generation set can have the adjusting capacity, and offshore wind energy can be better utilized.
Disclosure of Invention
The objective of the present invention is to provide an indirect cooling type offshore air energy storage wind power generation system to solve the above problems, which can significantly reduce or eliminate the impact on the power grid caused by too large fluctuation of offshore wind power.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
an indirect cooling type offshore air energy storage type wind power generation system comprises a wind power generator 1, a floating platform 2, fixed cables 3, a low-pressure air compressor 4, a heat exchanger 5, a high-pressure air compressor 6, an air turbine 7, a water pump 8, an air bag 9, a low-pressure air compressor inlet pipeline 10, a low-pressure air compressor outlet pipeline 11, a high-pressure air compressor inlet pipeline 12, a water pump inlet pipeline 13, a water pump outlet pipeline 14, a heat exchanger outlet pipeline 15, a high-pressure air compressor outlet pipeline 16, a horizontal pipeline 17, a turbine inlet pipeline 18, a turbine outlet pipeline 19, an underwater pipeline 20, a fan cable 21, an air compressor outlet pipeline shut-off valve 22 and a turbine inlet pipeline shut-off valve 23, wherein the wind power generator 1 is fixed on the floating platform 2, the floating platform 2 is fixed in a certain sea area through one or a plurality of fixed cables 3, one end of the fan cable, the low-pressure air compressor 4, the heat exchanger 5, the high-pressure air compressor 6, the air turbine 7 and the water pump 8 are all fixed on the floating platform 2, a low-pressure air compressor inlet pipeline 10 and a low-pressure air compressor outlet pipeline 11 are respectively connected with an inlet and an outlet of the low-pressure air compressor 4, the low-pressure air compressor outlet pipeline 11 is communicated with a high-pressure air compressor inlet pipeline 12 through the heat exchanger 5, a water pump inlet pipeline 13 and a water pump outlet pipeline 14 are respectively connected with an inlet and an outlet of the water pump 8, a water pump outlet pipeline 14 is communicated with a heat exchanger outlet pipeline 15 through the heat exchanger 5, the high-pressure air compressor inlet pipeline 12 and the high-pressure air compressor outlet pipeline 16 are respectively communicated with an inlet and an outlet of the high-pressure air compressor 6, a turbine inlet pipeline 18 and a turbine outlet pipeline 19 are respectively connected with an inlet and an outlet, the other end of the horizontal line 17 is connected to the air bag 9 fixed under the sea water through an underwater line 20, an air compressor outlet line shut-off valve 22 is located on the high pressure air compressor outlet line 16, and a turbine inlet line shut-off valve 23 is located on the turbine inlet line 18.
The low pressure air compressor inlet line 10 and the turbine outlet line 19 are both in direct communication with the air.
The number of the air bags 9 is more than or equal to 1, and when the number of the air bags 9 is more than 1, the air bags 9 are mutually communicated; the air bag 9 is fixed at a certain fixed depth within 80 to 1000 meters under water.
The end of the fixed cable 3 contacting the seabed is a ship anchor structure or a pile driving structure or a pile sinking structure.
The electric energy output by the wind driven generator 1 can be transmitted to the power grid through the fan cable 21 or provides power for the high-pressure air compressor 4 and the low-pressure air compressor 6, and the electric energy output by the air turbine 7 can be transmitted to the power grid through the fan cable 21.
In the operation method of the indirect cooling type offshore air energy storage type wind power generation system, the working process of the indirect cooling type offshore air energy storage type wind power generation system mainly comprises three stages, namely a direct internet access stage, an energy storage stage and an energy release stage, wherein the direct internet access stage means that when the output power of the indirect cooling type offshore air energy storage type wind power generation system is 90-110% of the power grid requirement value, an air compressor outlet pipeline shut-off valve 22 and a turbine inlet pipeline shut-off valve 23 are in a closed state, and the electric energy output by the wind power generator 1 is completely transmitted to the power grid through a fan cable 21; the energy storage stage is that when the output power of the indirect cooling type offshore air energy storage type wind power generation system is more than 110% of the power grid requirement value, the air compressor outlet pipeline shut-off valve 22 is in an opening state, the turbine inlet pipeline shut-off valve 23 is in a closing state, the electric power output by the wind driven generator 1 is divided into two parts of electric power, the first part is electric power equal to the power grid requirement value, the second part is part of electric power with more power grid requirement values, wherein the first part of electric power is transmitted to the power grid through the fan cable 21, and the second part of electric power drives the low-pressure air compressor 4 and the high-pressure air compressor 6 to do work on gas, so that the electric energy is converted into compressed gas energy which is stored; the energy release stage is that when the output power of the indirect cooling type offshore air energy storage type wind power generation system is below 90% of the power grid requirement value, the air compressor outlet pipeline shut-off valve 22 is in a closed state, the turbine inlet pipeline shut-off valve 23 is in an open state, the air turbine 7 is pushed to do work by compressed air in the underwater air bag 9, the air compression energy is converted into electric energy, the electric energy output by the air turbine 7 is transmitted to the power grid through the fan cable 21, or the electric energy output by the air turbine 7 and the wind power generator 1 is transmitted to the power grid through the fan cable 21.
The beneficial effects of the utility model reside in that:
at present, a mature technical scheme for solving the problem of overlarge fluctuation of the electric power of the offshore wind power on-line is not available. The utility model provides an indirect cooling type offshore air energy storage type wind power generation system with high operability, which adopts the technical proposal that a floating platform of an offshore wind power generation unit is provided with a high-pressure air compressor, a low-pressure air compressor, an air turbine and an underwater air storage air bag, the surplus electric energy generated by the offshore wind power can be stored into the compressed air through a plurality of air compressors, stored in the underwater air storage bag, the air storage pressure can reach 0.8MPa to 10MPa, the energy density of air energy storage is improved, when the electric energy generated by the offshore wind power is insufficient or cannot generate the electric energy, the compressed air in the underwater air storage bag is used for pushing the air turbine to do work, the compressed air energy is converted into the electric energy, the electric energy is provided for the power grid, the offshore wind power generation unit has certain power regulation capacity by the scheme, the impact on the power grid caused by overlarge fluctuation of the existing offshore wind power can be remarkably reduced or eliminated. The scheme adopts the underwater air bag for storing air, when the air in the air bag is reduced, the pressure of the air is equal to the pressure of the surrounding seawater, the volume of the air bag is contracted, the air pressure is unchanged, and the air turbine power output characteristic in the system is more stable than the air turbine output characteristic of the onshore air energy storage power station. Meanwhile, the scheme adopts a lower-cost underwater air bag scheme to replace an expensive storage tank, reduces the cost, is not limited by land space, and has the characteristics of long service life and high flexibility.
Drawings
Fig. 1 is a schematic view of an intercooling type offshore air energy storage type wind power generation system according to the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the utility model discloses an indirect cooling type offshore air energy storage type wind power generation system, which comprises a wind power generator 1, a floating platform 2, a fixed cable 3, a low pressure air compressor 4, a heat exchanger 5, a high pressure air compressor 6, an air turbine 7, a water pump 8, an air bag 9, a low pressure air compressor inlet pipeline 10, a low pressure air compressor outlet pipeline 11, a high pressure air compressor inlet pipeline 12, a water pump inlet pipeline 13, a water pump outlet pipeline 14, a heat exchanger outlet pipeline 15, a high pressure air compressor outlet pipeline 16, a horizontal pipeline 17, a turbine inlet pipeline 18, a turbine outlet pipeline 19, an underwater pipeline 20, a fan cable 21, an air compressor outlet pipeline shut-off valve 22 and a turbine inlet pipeline shut-off valve 23, wherein the wind power generator 1 is fixed on the floating platform 2, the floating platform 2 is fixed at a sea area through one or a plurality of fixed cables 3, one end of the fan cable 21 is fixed, the low-pressure air compressor 4, the heat exchanger 5, the high-pressure air compressor 6, the air turbine 7 and the water pump 8 are all fixed on the floating platform 2, a low-pressure air compressor inlet pipeline 10 and a low-pressure air compressor outlet pipeline 11 are respectively connected with an inlet and an outlet of the low-pressure air compressor 4, the low-pressure air compressor outlet pipeline 11 is communicated with a high-pressure air compressor inlet pipeline 12 through the heat exchanger 5, a water pump inlet pipeline 13 and a water pump outlet pipeline 14 are respectively connected with an inlet and an outlet of the water pump 8, a water pump outlet pipeline 14 is communicated with a heat exchanger outlet pipeline 15 through the heat exchanger 5, the high-pressure air compressor inlet pipeline 12 and the high-pressure air compressor outlet pipeline 16 are respectively communicated with an inlet and an outlet of the high-pressure air compressor 6, a turbine inlet pipeline 18 and a turbine outlet pipeline 19 are respectively connected with an inlet and an outlet, the other end of the horizontal line 17 is connected to the air bag 9 fixed under the sea water through an underwater line 20, an air compressor outlet line shut-off valve 22 is located on the high pressure air compressor outlet line 16, and a turbine inlet line shut-off valve 23 is located on the turbine inlet line 18.
As a preferred embodiment of the present invention, the low pressure air compressor inlet line 10 and the turbine outlet line 19 are both in direct communication with the air.
As a preferred embodiment of the present invention, the number of the air bags 9 is greater than or equal to 1, and when the number of the air bags 9 is greater than 1, the air bags 9 are communicated with each other; the air bag 9 is fixed at a fixed depth within 80 to 1000 meters.
As a preferred embodiment of the present invention, the end of the fixing rope 3 contacting the seabed is a ship anchor structure or a piling structure or a pile sinking structure.
As the preferred embodiment of the present invention, the electric energy output by the wind power generator 1 can be transmitted to the power grid through the fan cable 21 or provided with power for the high-pressure air compressor 4 and the low-pressure air compressor 6, and the electric energy output by the air turbine 7 can be transmitted to the power grid through the fan cable 21.
The utility model discloses an operation method of indirect cooling type offshore air energy storage type wind power generation system, the working process of indirect cooling type offshore air energy storage type wind power generation system mainly has three stages, is direct online stage, energy storage stage and energy release stage respectively, direct online stage means that when the output power of indirect cooling type offshore air energy storage type wind power generation system is 90% to 110% of electric wire netting demand value, air compressor machine outlet pipeline shut-off valve 22 and turbine inlet pipeline shut-off valve 23 are in the closed condition, and the electric energy of aerogenerator 1 output is whole to be transmitted to the electric wire netting through fan cable 21; the energy storage stage is that when the output power of the indirect cooling type offshore air energy storage type wind power generation system is more than 110% of the power grid requirement value, the air compressor outlet pipeline shut-off valve 22 is in an opening state, the turbine inlet pipeline shut-off valve 23 is in a closing state, the electric power output by the wind driven generator 1 is divided into two parts of electric power, the first part is electric power equal to the power grid requirement value, the second part is part of electric power with more power grid requirement values, wherein the first part of electric power is transmitted to the power grid through the fan cable 21, and the second part of electric power drives the low-pressure air compressor 4 and the high-pressure air compressor 6 to do work on gas, so that the electric energy is converted into compressed gas energy which is stored; the energy release stage is that when the output power of the indirect cooling type offshore air energy storage type wind power generation system is below 90% of the power grid requirement value, the air compressor outlet pipeline shut-off valve 22 is in a closed state, the turbine inlet pipeline shut-off valve 23 is in an open state, the air turbine 7 is pushed to do work by compressed air in the underwater air bag 9, the air compression energy is converted into electric energy, the electric energy output by the air turbine 7 is transmitted to the power grid through the fan cable 21, or the electric energy output by the air turbine 7 and the wind power generator 1 is transmitted to the power grid through the fan cable 21.
Claims (4)
1. Intermittent cooling type offshore air energy storage type wind power generation system, its characterized in that: comprises a wind driven generator (1), a floating platform (2), fixed mooring ropes (3), a low-pressure air compressor (4), a heat exchanger (5), a high-pressure air compressor (6), an air turbine (7), a water pump (8), an air bag (9), a low-pressure air compressor inlet pipeline (10), a low-pressure air compressor outlet pipeline (11), a high-pressure air compressor inlet pipeline (12), a water pump inlet pipeline (13), a water pump outlet pipeline (14), a heat exchanger outlet pipeline (15), a high-pressure air compressor outlet pipeline (16), a horizontal pipeline (17), a turbine inlet pipeline (18), a turbine outlet pipeline (19), an underwater pipeline (20), a fan cable (21), an air compressor outlet pipeline shut-off valve (22) and a turbine inlet pipeline shut-off valve (23), wherein the wind driven generator (1) is fixed on the floating platform (2), and the floating platform (2) is fixed in a certain sea area through one or a plurality of fixed mooring ropes (, one end of a fan cable (21) is fixed on the floating platform (2), a low-pressure air compressor (4), a heat exchanger (5), a high-pressure air compressor (6), an air turbine (7) and a water pump (8) are all fixed on the floating platform (2), a low-pressure air compressor inlet pipeline (10) and a low-pressure air compressor outlet pipeline (11) are respectively connected with an inlet and an outlet of the low-pressure air compressor (4), the low-pressure air compressor outlet pipeline (11) is communicated with a high-pressure air compressor inlet pipeline (12) through the heat exchanger (5), a water pump inlet pipeline (13) and a water pump outlet pipeline (14) are respectively connected with an inlet and an outlet of the water pump (8), a water pump outlet pipeline (14) is communicated with a heat exchanger outlet pipeline (15) through the heat exchanger (5), the high-pressure air compressor inlet pipeline (12) and the high-pressure air compressor outlet pipeline (16) are respectively communicated with an inlet, a turbine inlet pipeline (18) and a turbine outlet pipeline (19) are respectively connected with an inlet and an outlet of an air turbine (7), a high-pressure air compressor outlet pipeline (16) and the turbine inlet pipeline (18) are both communicated with one end of a horizontal pipeline (17), the other end of the horizontal pipeline (17) is communicated with an air bag (9) fixed under seawater through an underwater pipeline (20), an air compressor outlet pipeline shut-off valve (22) is positioned on the high-pressure air compressor outlet pipeline (16), and a turbine inlet pipeline shut-off valve (23) is positioned on the turbine inlet pipeline (18).
2. The indirect-cooled offshore air energy storage wind power generation system of claim 1, wherein: the inlet pipeline (10) of the low-pressure air compressor and the outlet pipeline (19) of the turbine are both directly communicated with air.
3. The indirect-cooled offshore air energy storage wind power generation system of claim 1, wherein: the number of the air bags (9) is more than or equal to 1, and when the number of the air bags (9) is more than 1, the air bags (9) are mutually communicated; the air bag (9) is fixed at a certain fixed depth within 80-1000 meters under water.
4. The indirect-cooled offshore air energy storage wind power generation system of claim 1, wherein: one end of the fixed cable (3) contacting with the seabed is a ship anchor structure or a pile driving structure or a pile sinking structure.
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| CN201921279585.XU CN210290007U (en) | 2019-08-08 | 2019-08-08 | Indirect cooling type offshore air energy storage type wind power generation system |
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| CN201921279585.XU CN210290007U (en) | 2019-08-08 | 2019-08-08 | Indirect cooling type offshore air energy storage type wind power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360056A (en) * | 2019-08-08 | 2019-10-22 | 西安热工研究院有限公司 | Indirect-cooling sea air accumulation energy type wind generator system and operation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360056A (en) * | 2019-08-08 | 2019-10-22 | 西安热工研究院有限公司 | Indirect-cooling sea air accumulation energy type wind generator system and operation method |
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