CN213279179U - Flywheel-hydrogen production-fuel cell power generation system for peak regulation and frequency modulation of photovoltaic power station - Google Patents
Flywheel-hydrogen production-fuel cell power generation system for peak regulation and frequency modulation of photovoltaic power station Download PDFInfo
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- CN213279179U CN213279179U CN202021596272.XU CN202021596272U CN213279179U CN 213279179 U CN213279179 U CN 213279179U CN 202021596272 U CN202021596272 U CN 202021596272U CN 213279179 U CN213279179 U CN 213279179U
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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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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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
Abstract
The utility model discloses a flywheel-hydrogen production-fuel cell power generation system for peak shaving frequency modulation of a photovoltaic power station, which comprises a photovoltaic power generation system, a photovoltaic inverter, a power coordination control system, an electrolysis hydrogen production system, an electric network, a flywheel energy storage system, an oxygen storage tank, a hydrogen storage tank and a fuel cell; the photovoltaic power generation system is connected with the power coordination control system through the photovoltaic inverter, the power coordination control system is connected with the electrolysis hydrogen production system, the power grid and the flywheel energy storage system, an oxygen outlet of the electrolysis hydrogen production system is connected with the oxygen storage tank, a hydrogen outlet of the electrolysis hydrogen production system is communicated with the hydrogen storage tank, an outlet of the hydrogen storage tank is communicated with a hydrogen inlet of the fuel cell, and an output end of the fuel cell is connected with the power grid.
Description
Technical Field
The utility model belongs to the field of flywheel energy storage and electrolytic water hydrogen production mixed peak shaving frequency modulation, and relates to a flywheel-hydrogen production-fuel cell power generation system for peak shaving frequency modulation of a photovoltaic power station.
Background
In 2019, the national photovoltaic power generation amount reaches 2243 hundred million kilowatt hours, and the photovoltaic power is abandoned for 46 million kilowatt hours. From the key area, the photovoltaic absorption problem mainly occurs in the northwest region, wherein the light rejection rates of the Tibet, Xinjiang and Gansu are respectively 24.1%, 7.4% and 4.0%, the Qinghai is influenced by factors such as great increase of new energy installation, load reduction and the like, the light rejection rate is improved to 7.2%, and the light rejection rate is improved by 2.5% on a year-on-year basis. Meanwhile, the grid electricity price of photovoltaic power generation is in a continuous descending trend and gradually converges with the traditional grid electricity price.
Moreover, due to the inherent characteristics of intermittency, random uncertainty and the like of photovoltaic power generation, a great deal of adverse effects are generated on the safe and stable operation of the accessed power grid, so that the assessment of power generation enterprises is increased, and the benefits of the power generation enterprises are influenced. Therefore, improving the quality of the power accessed to the power grid also becomes a problem to be solved urgently. The flywheel energy storage system has the advantages of high multiplying power and long service life, can absorb energy instantly, is charged and discharged frequently in a short time with high power, and can effectively solve the problem of electric energy frequency stability of a photovoltaic power station.
Meanwhile, photovoltaic electricity is abandoned for hydrogen production by electrolyzing water, so that waste resources can be effectively consumed, and hydrogen energy is generated. Meanwhile, when electric energy is needed, hydrogen energy can be converted into electric energy by the fuel cell and transmitted to the Internet, so that electric energy storage and release are realized. Hydrogen energy is a new green energy resource, and is receiving more and more attention. In recent two years, hydrogen can keep the subsidy strength constant under the condition that the subsidy of various industries of new energy generally moves back.
Compared with the method for producing hydrogen by commercial power, the method for producing hydrogen by electrolyzing water by utilizing low-cost photovoltaic discarded electricity in a photovoltaic power station has incomparable advantages, can produce clean energy by using clean energy, effectively consumes photovoltaic power generation, and can realize effective combined application of two important new energy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a flywheel-hydrogen manufacturing-fuel cell power generation system for photovoltaic power plant peak regulation frequency modulation, this system can effectively solve the unstable impact that causes the electric wire netting of photovoltaic power plant electric energy output, avoids appearing the phenomenon of abandoning the light in a large number simultaneously.
In order to achieve the above purpose, the flywheel-hydrogen production-fuel cell power generation system for peak shaving and frequency modulation of the photovoltaic power station comprises a photovoltaic power generation system, a photovoltaic inverter, a power coordination control system, an electrolysis hydrogen production system, an alternating current bus, a power grid, a flywheel energy storage system, an oxygen storage tank, a hydrogen storage tank and a fuel cell;
the photovoltaic power generation system, the flywheel energy storage system and the water electrolysis hydrogen production system access respective power signals to the power coordination controller.
The photovoltaic power generation system is connected to an alternating current bus through a photovoltaic inverter;
the alternating current bus is connected with the input end of the flywheel energy storage system through a second AC-DC converter, and the flywheel energy storage system is connected with the alternating current bus through a DC-AC bidirectional converter;
the alternating current bus is connected with a power interface of the electrolytic hydrogen production system through an AC-DC converter.
The hydrogen outlet of the electrolytic hydrogen production system is communicated with the hydrogen storage tank through a hydrogen compressor.
The oxygen outlet of the electrolytic hydrogen production system is communicated with the oxygen storage tank through an oxygen compressor.
The output end of the fuel cell is connected with the alternating current bus through a second DC-AC converter.
The utility model discloses following beneficial effect has:
the utility model discloses a flywheel-hydrogen manufacturing-fuel cell power generation system for peak shaving frequency modulation of photovoltaic power plant when specifically operating, combine photovoltaic power generation system, flywheel energy storage system, electrolysis hydrogen manufacturing system and fuel cell and solve photovoltaic power plant output fluctuation nature big and a large amount of abandon light problem to improve photovoltaic power plant's electricity generation utilization efficiency; additionally, the utility model discloses a mode of flywheel energy storage system, electrolysis hydrogen manufacturing system and fuel cell linkage, make full use of flywheel energy storage system response speed is fast, a great deal of characteristics that power density is high, stabilize photovoltaic power generation and fluctuate, realize the quick frequency modulation function, still can reduce the undulant impact to electric wire netting, electrolysis hydrogen manufacturing system, fuel cell of photovoltaic power generation simultaneously, effectively compensate renewable energy power generation intermittent type nature such as photovoltaic, the shortcoming of volatility, improve electric field output's controllability, promote the stability level of electricity generation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The system comprises a photovoltaic power generation system 1, a photovoltaic inverter 2, a power coordination control system 3, a first DC-AC converter 4, a second AC-DC converter 5, a first AC-DC converter 6, an electrolytic hydrogen production system 7, a flywheel energy storage system 8, a hydrogen storage tank 9, an oxygen compressor 10, an oxygen storage tank 11, a fuel cell 12, a second DC-AC converter 13, a hydrogen compressor 14, an alternating current bus 16 and a power grid 17.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the flywheel-hydrogen production-fuel cell power generation system for peak shaving frequency modulation of a photovoltaic power station of the present invention includes a photovoltaic power generation system 1, a photovoltaic inverter 2, a power coordination control system 3, an electrolysis hydrogen production system 7, an ac bus 16, electricity/17, a flywheel energy storage system 8, an oxygen storage tank 11, a hydrogen storage tank 9 and a fuel cell 12;
the photovoltaic power generation system 1, the flywheel energy storage system 8 and the electrolyzed water hydrogen production system 7 access respective power signals to the power coordination controller 3; the photovoltaic power generation system 1 is connected to an alternating current bus 16 through a photovoltaic inverter 2;
the alternating current bus 16 is connected with the input end of the flywheel energy storage system 8 through the second AC-DC converter 5, and the flywheel energy storage system 8 is connected with the alternating current bus 16 through the DC-AC bidirectional converter 4; the alternating current bus 16 is connected with a power interface of the electrolytic hydrogen production system 7 through the AC-DC converter 6.
A hydrogen outlet of the electrolytic hydrogen production system 7 is communicated with the hydrogen storage tank 9 through a hydrogen compressor 14; an oxygen outlet of the electrolytic hydrogen production system 7 is communicated with an oxygen storage tank 11 through an oxygen compressor 10.
The output of the fuel cell 12 is connected to an alternating current bus 16 via a second DC-AC converter 13.
The utility model discloses a concrete working process does:
the power coordination control system 3 communicates and controls each module;
when the power generation power of the photovoltaic power generation system 1 is different from the power grid requirement, the power coordination control system 3 controls the flywheel energy storage system 8 and the fuel cell 12 to generate power to meet the power grid requirement, wherein the power grid requirement is met by the flywheel energy storage system 8 preferentially, and when the flywheel energy storage system 8 cannot meet the power grid requirement, the fuel cell 12 is started to supplement the power grid requirement.
When the generating power of the photovoltaic generating system 1 is larger than the instruction power of the power grid, the power coordination control system 3 controls that redundant electric energy is rectified and regulated by the second AC-DC converter 5 to charge the flywheel energy storage system 8, meanwhile, the part exceeding the energy storage power of the flywheel energy storage system 8 is input into the electrolytic hydrogen production system 7 after being stabilized and rectified by the first AC-DC converter 6, and hydrogen is produced by electrolyzing water by the electrolytic hydrogen production system 7;
when the power fluctuation is small, the flywheel energy storage system 8 is preferentially controlled to charge and discharge, the characteristics of high charging and discharging speed and long cycle life of the flywheel energy storage system 8 are fully utilized, the power fluctuation of the water electrolysis hydrogen production system is reduced, and the service life of the water electrolysis hydrogen production system is prolonged;
when the photovoltaic power generation power is far less than the power grid requirement, the flywheel energy storage system 8 discharges to the power grid through the first DC-AC converter 4 until the capacity is 30%, the fuel cell 12 is started to generate power, and direct current is converted into alternating current through the DC-AC converter to supply power to the power grid.
Specifically, the electrolytic hydrogen production system 7 adopts a conventional alkaline electrolyte (30% KOH solution) with high conductivity, the cathode material of the electrolytic cell is one or more alloys of metals such as Pt, Ru, Rh, Ir, Ni, Co, Fe, Zn, Ti, etc., and the anode material is a nickel-based metal or an alloy oxide.
The electrolytic hydrogen production product is purified by a hydrogen buffer tank and an oxygen buffer tank respectively, then compressed by a hydrogen compressor 14 and an oxygen compressor 10, and finally stored in an oxygen storage tank 11 and a hydrogen storage tank 9.
The utility model discloses at the during operation, to less power fluctuation, flywheel energy storage system 8 is in all the time in charging and discharging the fluctuation, consequently, adopts the flywheel energy storage system 8 that has quick response, can effectively improve the frequency modulation speed and the precision of wind-powered electricity generation field.
In the embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (3)
1. A flywheel-hydrogen production-fuel cell power generation system for peak shaving and frequency modulation of a photovoltaic power station is characterized by comprising a photovoltaic power generation system (1), a photovoltaic inverter (2), a power coordination control system (3), an electrolysis hydrogen production system (7), a flywheel energy storage system (8), an oxygen storage tank (11), a hydrogen storage tank (9), a fuel cell (12), an alternating current bus (16) and a power grid (17);
the photovoltaic power generation system (1), the flywheel energy storage system (8) and the electrolytic hydrogen production system (7) access respective power signals to the power coordination control system (3);
the photovoltaic power generation system (1) is connected to an alternating current bus (16) through a photovoltaic inverter (2);
the alternating current bus (16) is connected with the input end of the flywheel energy storage system (8) through a second AC-DC converter (5), and the flywheel energy storage system (8) is connected with the alternating current bus (16) through a DC-AC bidirectional converter (4);
the alternating current bus (16) is connected with a power interface of the electrolytic hydrogen production system (7) through the AC-DC converter (6);
the output of the fuel cell (12) is connected to an alternating current bus (16) via a second DC-AC converter (13).
2. The flywheel-hydrogen generation-fuel cell power generation system for peak shaving and frequency modulation of photovoltaic power plants as claimed in claim 1, characterized in that the hydrogen outlet of the electrolytic hydrogen generation system (7) is connected to the hydrogen storage tank (9) via a hydrogen compressor (14).
3. The flywheel-hydrogen generation-fuel cell power generation system for peak shaving and frequency modulation of photovoltaic power plants as claimed in claim 1, characterized in that the oxygen outlet of the electrolytic hydrogen generation system (7) is in communication with the oxygen storage tank (11) via an oxygen compressor (10).
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| CN202021596272.XU CN213279179U (en) | 2020-08-04 | 2020-08-04 | Flywheel-hydrogen production-fuel cell power generation system for peak regulation and frequency modulation of photovoltaic power station |
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| CN202021596272.XU CN213279179U (en) | 2020-08-04 | 2020-08-04 | Flywheel-hydrogen production-fuel cell power generation system for peak regulation and frequency modulation of photovoltaic power station |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315243A (en) * | 2021-06-04 | 2021-08-27 | 重庆邮电大学 | Flywheel energy storage and hydrogen storage charging and discharging control method for new energy micro-grid |
| CN113346549A (en) * | 2021-06-30 | 2021-09-03 | 贵州大学 | Multi-vector clean energy system under genetic algorithm and optimization method thereof |
| CN113690906A (en) * | 2021-08-27 | 2021-11-23 | 山西图门新能源有限公司 | Photovoltaic power generation energy storage primary frequency modulation system based on carbon back electric capacity |
| CN114164443A (en) * | 2021-12-03 | 2022-03-11 | 鄂尔多斯市紫荆创新研究院 | Method for preparing hydrogen by coupling photovoltaic power generation and electrolyzed water |
| CN114976157A (en) * | 2022-05-25 | 2022-08-30 | 国网安徽省电力有限公司电力科学研究院 | Hydrogen energy storage power station system |
| CN115395540A (en) * | 2022-09-20 | 2022-11-25 | 华驰动能(北京)科技有限公司 | Flywheel hydrogen storage device for new energy station |
-
2020
- 2020-08-04 CN CN202021596272.XU patent/CN213279179U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315243A (en) * | 2021-06-04 | 2021-08-27 | 重庆邮电大学 | Flywheel energy storage and hydrogen storage charging and discharging control method for new energy micro-grid |
| CN113315243B (en) * | 2021-06-04 | 2023-03-21 | 重庆邮电大学 | Flywheel energy storage and hydrogen storage charging and discharging control method for new energy micro-grid |
| CN113346549A (en) * | 2021-06-30 | 2021-09-03 | 贵州大学 | Multi-vector clean energy system under genetic algorithm and optimization method thereof |
| CN113690906A (en) * | 2021-08-27 | 2021-11-23 | 山西图门新能源有限公司 | Photovoltaic power generation energy storage primary frequency modulation system based on carbon back electric capacity |
| CN113690906B (en) * | 2021-08-27 | 2024-01-26 | 山西图门新能源有限公司 | Photovoltaic power generation energy storage primary frequency modulation system based on carbon-based capacitor |
| CN114164443A (en) * | 2021-12-03 | 2022-03-11 | 鄂尔多斯市紫荆创新研究院 | Method for preparing hydrogen by coupling photovoltaic power generation and electrolyzed water |
| CN114976157A (en) * | 2022-05-25 | 2022-08-30 | 国网安徽省电力有限公司电力科学研究院 | Hydrogen energy storage power station system |
| CN115395540A (en) * | 2022-09-20 | 2022-11-25 | 华驰动能(北京)科技有限公司 | Flywheel hydrogen storage device for new energy station |
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