CN211038914U - Solar energy and wind energy combined energy storage power generation system - Google Patents
Solar energy and wind energy combined energy storage power generation system Download PDFInfo
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- CN211038914U CN211038914U CN201922082026.6U CN201922082026U CN211038914U CN 211038914 U CN211038914 U CN 211038914U CN 201922082026 U CN201922082026 U CN 201922082026U CN 211038914 U CN211038914 U CN 211038914U
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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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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
- 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 a solar energy and wind energy combined energy storage power generation system, which comprises a supercritical carbon dioxide energy storage power generation system, a wind power generation system, a fused salt energy storage system, a mirror field and a heat collector, wherein the outlet of the fused salt energy storage system is communicated with the heat absorption side inlet of the supercritical carbon dioxide energy storage and generation system, the heat absorption side outlet of the supercritical carbon dioxide energy storage and generation system is communicated with the inlet of the fused salt energy storage system, the solar rays are refracted by a mirror field and then irradiated into the heat collector, the heat absorption side inlet of the fused salt energy storage system is communicated with the outlet of the heat collector, the heat absorption side outlet of the fused salt energy storage system is communicated with the inlet of the heat collector, the wind power generation system is connected with the power supply interface of the compressor in the supercritical carbon dioxide energy storage and generation system, the system can realize the combination of solar photo-thermal heat storage and wind energy compression supercritical carbon dioxide energy storage power generation.
Description
Technical Field
The utility model belongs to wind energy and solar energy power generation field relates to a solar energy and wind energy combined energy storage power generation system.
Background
Solar energy is an energy source generated by solar radiation, wind energy is kinetic energy of air flowing on the surface of the earth, and the two energy sources are rich in resources, have no pollution to the environment and are increasingly used for generating electricity. Due to the influence of weather, solar energy and wind energy are unstable, and the stable and continuous output of electric power cannot be ensured when the solar energy and wind energy are used for power generation. In recent years, energy storage technology has been rapidly developed. The energy storage system can realize large-capacity heat or energy storage, and stably releases the heat or energy for power generation or other utilization when the energy is needed.
The molten salt energy storage technology is the mainstream high-temperature heat storage technology in the world at present, has low cost, and is widely applied to photo-thermal power generation energy storage in countries such as Europe. The compressed air energy storage refers to an energy storage mode that electric energy is used for compressing air in a low-load valley period of a power grid, the air is sealed in a scrapped mine, a settled seabed gas storage tank, a cave, an overdue oil and gas well or a newly-built gas storage well at high pressure, and the compressed air is released to push a steam turbine to generate electricity in a high-load peak period of the power grid. Even if the air is compressed, the density of the air is still low, and a large-scale air storage device needs to be built.
The use of carbon dioxide instead of air as the working medium for energy storage is an effective solution to the above problems. Carbon dioxide is non-toxic, non-flammable, high in density, and critical temperature (T)c31.1 deg.C, lower critical pressure (P)c7.38MPa), the density of the supercritical carbon dioxide is close to liquid, the viscosity is close to gas, the supercritical carbon dioxide has better fluidity and transmission characteristic, the volume is obviously reduced, and the compressed supercritical carbon dioxide is used for storing energyThe scale of the storage system can be obviously reduced, the cost is reduced, and meanwhile, the application is more flexible.
In the currently published reports about solar energy and wind energy combined energy storage, for example, the Chinese patent CN 207064027U combines compressed air energy storage with solar energy heat storage, and the Chinese patent CN 207603498U combines photovoltaic power generation and wind power generation with storage battery energy storage, and no report combines solar photothermal heat storage with wind energy compression supercritical carbon dioxide energy storage and power generation is available.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a solar energy and wind energy combined energy storage power generation system, this system can realize solar photothermal thermal storage and wind energy compression supercritical carbon dioxide energy storage power generation's combination.
In order to reach above-mentioned purpose, solar energy and wind energy combined energy storage power generation system include supercritical carbon dioxide energy storage power generation system, wind power generation system, fused salt energy storage system, mirror field and heat collector, wherein, fused salt energy storage system's export is linked together with supercritical carbon dioxide energy storage power generation system's heat absorption side entry, supercritical carbon dioxide energy storage power generation system's heat absorption side export is linked together with fused salt energy storage system's entry, the sunlight shines in the heat collector after the refraction of mirror field, fused salt energy storage system's heat absorption side entry is linked together with the export of heat collector, fused salt energy storage system's heat absorption side export is linked together with the entry of heat collector, wind power generation system is connected with the power source interface of compressor in the supercritical carbon dioxide energy storage power.
The molten salt energy storage system comprises a high-temperature molten salt tank and a low-temperature molten salt tank, and the supercritical carbon dioxide energy storage power generation system comprises a heat exchanger, a motor, a turbine, a heat regenerator, a low-pressure tank, a compressor, a high-pressure tank, a heat regenerator and a generator;
the outlet of the high-temperature molten salt tank is communicated with the heat release side inlet of the heat exchanger, the heat release side outlet of the heat exchanger is communicated with the inlet of the low-temperature molten salt tank, the outlet of the low-temperature molten salt tank is communicated with the inlet of the heat collector, and the outlet of the heat collector is communicated with the inlet of the high-temperature molten salt tank;
the heat absorption side outlet of the heat exchanger is communicated with the heat absorption side inlet of the heat exchanger through a turbine, the heat release side of the heat regenerator, the low-pressure tank, the compressor, the high-pressure tank and the heat absorption side of the heat regenerator in sequence, the turbine is connected with the output shaft of the generator, the motor is connected with the driving shaft of the compressor, and the power supply interface of the motor is connected with the output end of the wind power generation system.
The wind power generation system comprises a windmill and a windmill generator, wherein a driving shaft of the windmill generator is connected with the windmill, and an output end of the windmill generator is connected with a power interface of the motor.
The utility model discloses following beneficial effect has:
energy storage power generation system is united to solar energy and wind energy when concrete operation, utilize solar energy to store with the form of fused salt sensible heat, pass through compressor compression carbon dioxide with the electricity that the wind energy takes place to with the form storage of high-pressure carbon dioxide, pass through the heat exchanger with the sensible heat of fused salt again and release for high-pressure carbon dioxide, form high temperature supercritical carbon dioxide, with the work of maintaining supercritical carbon dioxide power generation system, thereby realize the combination of solar photothermal heat accumulation and wind energy compression supercritical carbon dioxide energy storage power generation, it is required to explain, well compression energy storage working medium is the same with the power generation working medium, and power generation system can be in the same place with energy storage system coupling.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a mirror field, 2 is a heat collector, 3 is a high-temperature molten salt tank, 4 is a heat exchanger, 5 is a low-temperature molten salt tank, 6 is a windmill, 7 is a windmill generator, 8 is a motor, 9 is a compressor, 10 is a high-pressure tank, 11 is a heat regenerator, 12 is a turbine, 13 is a generator, 14 is a cooler, and 15 is a low-pressure tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, solar and wind energy combined energy storage power generation system include supercritical carbon dioxide energy storage power generation system, wind power generation system, fuse salt energy storage system, mirror field 1 and heat collector 2, wherein, fused salt energy storage system's export is linked together with supercritical carbon dioxide energy storage power generation system's heat absorption side entry, supercritical carbon dioxide energy storage power generation system's heat absorption side export is linked together with fused salt energy storage system's entry, solar ray shines in heat collector 2 after 1 refraction of mirror field, fused salt energy storage system's heat absorption side entry is linked together with heat collector 2's export, fused salt energy storage system's heat absorption side export is linked together with heat collector 2's entry, wind power generation system is connected with the power source interface of compressor 9 in the supercritical carbon dioxide energy storage power generation system.
The molten salt energy storage system comprises a high-temperature molten salt tank 3 and a low-temperature molten salt tank 5, and the supercritical carbon dioxide energy storage power generation system comprises a heat exchanger 4, a motor 8, a turbine 12, a heat regenerator 11, a low-pressure tank 15, a compressor 9, a high-pressure tank 10, a heat regenerator 11 and a power generator 13; an outlet of the high-temperature molten salt tank 3 is communicated with a heat release side inlet of the heat exchanger 4, a heat release side outlet of the heat exchanger 4 is communicated with an inlet of the low-temperature molten salt tank 5, an outlet of the low-temperature molten salt tank 5 is communicated with an inlet of the heat collector 2, and an outlet of the heat collector 2 is communicated with an inlet of the high-temperature molten salt tank 3; the heat absorption side outlet of the heat exchanger 4 is communicated with the heat absorption side inlet of the heat exchanger 4 through a turbine 12, the heat release side of a heat regenerator 11, a low pressure tank 15, a compressor 9, a high pressure tank 10 and the heat absorption side of the heat regenerator 11 in sequence, the turbine 12 is connected with the output shaft of a generator 13, an electric motor 8 is connected with the driving shaft of the compressor 9, the power supply interface of the electric motor 8 is connected with the output end of a wind power generation system, in addition, the wind power generation system comprises a windmill 6 and a windmill generator 7, wherein the driving shaft of the windmill generator 7 is connected with the windmill 6, and the output end of the windmill generator 7 is connected with the power.
The utility model discloses a concrete working process does:
under the conditions of normal solar irradiation and normal wind power, sunlight is focused on a heat collector 2 by a mirror field 1, molten salt in the heat collector 2 is heated and then enters a high-temperature molten salt tank 3, solar energy is stored in the high-temperature molten salt tank 3 in the form of sensible heat of the high-temperature molten salt, the high-temperature molten salt stored in the high-temperature molten salt tank 3 enters a heat exchanger 4 to heat supercritical carbon dioxide and then enters a low-temperature molten salt tank 5, and the low-temperature molten salt stored in the low-temperature molten salt tank 5 enters the heat collector 2 to be reheated; the electric energy generated by the wind power generation system drives the motor 8 to work, the motor 8 drives the compressor 9 to work, the supercritical carbon dioxide output by the heat exchanger 4 enters the turbine 12 to do work, the turbine 12 drives the generator 13 to generate electricity, the carbon dioxide output by the turbine 12 enters the low-pressure tank 15 after being sequentially subjected to heat release by the heat regenerator 11 and cooling by the cooler 14, the carbon dioxide output by the low-pressure tank 15 is compressed by the compressor 9 and then enters the high-pressure tank 10, and the carbon dioxide output by the high-pressure tank 10 enters the heat exchanger 4 to absorb heat after being subjected to heat regeneration by the heat regenerator 11 so as to form high-temperature supercritical carbon dioxide;
when solar irradiation is abnormal, the heat collector 2 cannot heat the molten salt, and the high-temperature molten salt stored in the high-temperature molten salt tank 3 enters the heat exchanger 4 to heat carbon dioxide to form high-temperature supercritical carbon dioxide so as to maintain the operation of the supercritical carbon dioxide energy storage power generation system;
when wind power is abnormal, the wind power generation system cannot normally operate, carbon dioxide stored in the high-pressure tank 10 is used for entering the heat exchanger 4 after being reheated by the heat regenerator 11, and then high-temperature supercritical carbon dioxide is formed through heat exchange of the heat exchanger 4, so that the operation of the supercritical carbon dioxide energy storage power generation system is maintained.
It should be noted that the above-mentioned embodiments are only for illustrating the technical idea and features of the present invention, and the specific implementation methods, such as the type of the compressor 9, the type of the high pressure tank 10 and the low pressure tank 15, etc., can be modified and improved without departing from the scope and the basic spirit of the present invention as defined in the claims.
Claims (3)
1. The solar energy and wind energy combined energy storage power generation system is characterized by comprising a supercritical carbon dioxide energy storage power generation system, a wind power generation system, a fused salt energy storage system, a mirror field (1) and a heat collector (2), wherein an outlet of the fused salt energy storage system is communicated with an inlet of a heat absorption side of the supercritical carbon dioxide energy storage power generation system, an outlet of the heat absorption side of the supercritical carbon dioxide energy storage power generation system is communicated with an inlet of the fused salt energy storage system, solar rays are irradiated into the heat collector (2) after being refracted by the mirror field (1), an inlet of the heat absorption side of the fused salt energy storage system is communicated with an outlet of the fused salt energy storage system, an outlet of the heat absorption side of the fused salt energy storage system is communicated with an inlet of the heat collector (2), and the wind power generation system is connected with a power supply.
2. The solar energy and wind energy combined energy storage and power generation system according to claim 1, wherein the molten salt energy storage system comprises a high-temperature molten salt tank (3) and a low-temperature molten salt tank (5), and the supercritical carbon dioxide energy storage and power generation system comprises a heat exchanger (4), a motor (8), a turbine (12), a regenerator (11), a low-pressure tank (15), a compressor (9), a high-pressure tank (10), a regenerator (11) and a generator (13);
an outlet of the high-temperature molten salt tank (3) is communicated with a heat release side inlet of the heat exchanger (4), a heat release side outlet of the heat exchanger (4) is communicated with an inlet of the low-temperature molten salt tank (5), an outlet of the low-temperature molten salt tank (5) is communicated with an inlet of the heat collector (2), and an outlet of the heat collector (2) is communicated with an inlet of the high-temperature molten salt tank (3);
the heat absorption side outlet of the heat exchanger (4) is communicated with the heat absorption side inlet of the heat exchanger (4) through a turbine (12), the heat release side of a heat regenerator (11), a low-pressure tank (15), a compressor (9), a high-pressure tank (10) and the heat absorption side of the heat regenerator (11) in sequence, the turbine (12) is connected with the output shaft of a generator (13), a motor (8) is connected with the driving shaft of the compressor (9), and the power interface of the motor (8) is connected with the output end of a wind power generation system.
3. Solar-wind energy combined storage and generation system according to claim 2, characterized in that the wind power generation system comprises a windmill (6) and a windmill generator (7), wherein the driving shaft of the windmill generator (7) is connected with the windmill (6), and the output end of the windmill generator (7) is connected with the power interface of the electric motor (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922082026.6U CN211038914U (en) | 2019-11-27 | 2019-11-27 | Solar energy and wind energy combined energy storage power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922082026.6U CN211038914U (en) | 2019-11-27 | 2019-11-27 | Solar energy and wind energy combined energy storage power generation system |
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| CN211038914U true CN211038914U (en) | 2020-07-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725778A (en) * | 2019-11-27 | 2020-01-24 | 西安热工研究院有限公司 | Solar energy and wind energy combined energy storage power generation system and method |
| CN113852124A (en) * | 2021-09-17 | 2021-12-28 | 中广核太阳能开发有限公司 | Power supply control system and control method based on renewable resources |
| CN116718059A (en) * | 2023-08-07 | 2023-09-08 | 山西中能天胜科技有限公司 | Power station peak shaving system and method based on high-capacity high-temperature molten salt energy storage |
-
2019
- 2019-11-27 CN CN201922082026.6U patent/CN211038914U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725778A (en) * | 2019-11-27 | 2020-01-24 | 西安热工研究院有限公司 | Solar energy and wind energy combined energy storage power generation system and method |
| CN113852124A (en) * | 2021-09-17 | 2021-12-28 | 中广核太阳能开发有限公司 | Power supply control system and control method based on renewable resources |
| CN116718059A (en) * | 2023-08-07 | 2023-09-08 | 山西中能天胜科技有限公司 | Power station peak shaving system and method based on high-capacity high-temperature molten salt energy storage |
| CN116718059B (en) * | 2023-08-07 | 2023-10-27 | 山西中能天胜科技有限公司 | Power station peak shaving system and method based on high-capacity high-temperature molten salt energy storage |
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