CN218385296U - Hydrogen energy storage system - Google Patents
Hydrogen energy storage system Download PDFInfo
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- CN218385296U CN218385296U CN202220780291.0U CN202220780291U CN218385296U CN 218385296 U CN218385296 U CN 218385296U CN 202220780291 U CN202220780291 U CN 202220780291U CN 218385296 U CN218385296 U CN 218385296U
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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
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- 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
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Abstract
A hydrogen energy storage system includes a renewable energy power generation device, a first converter, a hydrogen generation device, a hydrogen storage device, and a fuel cell device. The renewable energy power generation device generates power by using renewable energy and supplies the power to the hydrogen production device, and hydrogen produced by the hydrogen production device is stored in the hydrogen production device. The hydrogen storage device supplies hydrogen to the fuel cell device as fuel, and the fuel cell device generates electric energy by the hydrogen through electrochemical reaction and transmits the electric energy to the power grid. Therefore, the storage of electricity can be solved by generating hydrogen through the hydrogen production device in a phase-changing manner, redundant electric energy is used for electrolyzing water to generate hydrogen when the peak of power generation is reached, the hydrogen is stored in the hydrogen storage device, then the electric energy is converted into the electric energy through the fuel cell device, the automatic control and adjustment are carried out to achieve balanced operation, the safe internet surfing is realized, and the external stable power supply is realized. Furthermore, hydrogen is stored in the hydrogen storage device for energy storage, and compared with the existing storage battery for energy storage, the hydrogen storage battery has the advantages of long period, large capacity, trans-regional capability and the like.
Description
Technical Field
The application relates to the technical field of hydrogen energy sources, in particular to a hydrogen energy storage system.
Background
In recent years, the installed capacity of renewable energy sources worldwide has kept increasing rapidly. The installed capacity of global renewable energy reaches 25.37 hundred million KW by the end of 2019, and accounts for 34.7% of the total installed electric power, and the installed capacity is increased by 1.4% compared with the installed capacity in 2018. The clean and green transformation of world energy is accelerating the stable increase of the proportion of renewable energy sources. Renewable energy becomes the main body of power increment, and wind power and solar power generation develop rapidly. In 2019, a new renewable energy source installation 17600 million KW is added globally, and accounts for 72 percent of the new electric power installation. 9800 thousands KW are newly increased in solar power generation, 5900 thousands KW are newly increased in wind power generation, and 89% of wind and light account for newly increased renewable energy sources. By the end of 2019, 43838 ten thousand KW are installed in the renewable energy source installation, and the proportion of the 43838 thousand KW in the renewable energy source total installation is 55.2%. Due to the fact that renewable energy in nature has high randomness, intermittence and fluctuation, the operation plan of a conventional unit of a power system and the economics and reliability of the system are changed, and the phenomena of difficult renewable energy consumption, difficult grid connection, light abandonment and wind abandonment are caused in a large amount.
At present, the operation simulation method of the power system containing the ultrahigh-proportion renewable energy is mostly combined dispatching by adopting a conventional unit. However, the operation simulation method cannot schedule in time and still generates the phenomena of wind abandoning and light abandoning to cause the reduction of the utilization rate of energy. And the starting and stopping cost of the conventional unit is higher, and the conventional unit is not economical and environment-friendly.
Disclosure of Invention
The invention aims to provide a hydrogen energy storage system, which aims to solve the technical problems of light abandonment and wind abandonment caused by difficult renewable energy consumption and grid connection in the prior art.
To achieve the above object, the present application provides a hydrogen energy storage system comprising:
a renewable energy power generation device which generates power by using renewable energy;
a first converter connected to the renewable energy power generation device;
a hydrogen production device, wherein the first converter is connected with the hydrogen production device and is used for carrying out voltage transformation on the electricity generated by the renewable energy power generation device so as to provide a suitable power supply for the hydrogen production device;
the hydrogen storage device is connected with the hydrogen production device and is used for storing the hydrogen produced by the hydrogen production device;
the fuel cell device is connected with the hydrogen storage device, the hydrogen storage device supplies hydrogen to the fuel cell device, and the fuel cell device generates electric energy through electrochemical reaction of the hydrogen and transmits the electric energy to a power grid.
Alternatively, in the hydrogen energy storage system, the renewable energy power generation device may generate power using one or more of solar energy, wind energy, and water energy.
Optionally, in the hydrogen energy storage system, the renewable energy power generation device is composed of one or more unstable and discontinuous power generation stations selected from a wind power station, a solar photovoltaic power station and a tidal power station; meanwhile, a power supply end of the hydrogen production device is connected in parallel with a feedback power supply device from a power grid, and hydrogen is produced by power supply of the power grid under the meteorological conditions of wind energy shortage, light energy shortage and water energy shortage.
Optionally, in the hydrogen energy storage system, the hydrogen production apparatus is an electrolysis apparatus, and the hydrogen energy storage system further includes a water supply apparatus, and the water supply apparatus is connected to the electrolysis apparatus to supply electrolyte to the electrolysis apparatus.
Optionally, in the hydrogen energy storage system, the electrolysis device is any one or combination of any more of a proton exchange membrane electrolyzer, a solid oxide electrolyzer and an alkaline electrolyzer.
Optionally, in the hydrogen energy storage system, the fuel cell device is a proton exchange membrane fuel cell.
Optionally, in the hydrogen energy storage system, the hydrogen energy storage system further comprises a second converter; the second converter is connected with the fuel cell to convert the electricity generated by the fuel cell so as to supply power to the power grid or the electric appliance.
Optionally, in the hydrogen energy storage system, the hydrogen energy storage system further includes a control device, the control device is in communication connection with the renewable energy power generation device, the hydrogen energy storage device, the fuel cell and the power grid respectively, and the control device can obtain a parameter of power generation amount of the renewable energy power generation device, a parameter of hydrogen storage amount of the hydrogen energy storage device, a parameter of electric energy generated by the fuel cell and a load parameter of the power grid, and perform electric energy allocation based on the parameter of power generation amount of the renewable energy power generation device, the parameter of hydrogen storage amount of the hydrogen energy storage device, the parameter of electric energy generated by the fuel cell and the load parameter of the power grid.
Compared with the prior art, the hydrogen energy storage system provided by the application directly adopts the renewable energy power generation device to supply electric energy to the hydrogen production device in the hydrogen energy storage system, so that the hydrogen production device does not need to consume the electric energy in the power grid, and the load of the power grid is not increased. Therefore, the storage of electricity can be solved by generating hydrogen through a hydrogen production device in a phase-changing manner, a large amount of electric energy is used for electrolyzing water to generate hydrogen at the peak of power generation, the hydrogen is stored in the hydrogen storage device, when no light (wind and water energy) exists or the light (wind and water energy) is insufficient in power generation, the hydrogen is converted to generate electric energy through the fuel cell device, automatic control and adjustment are carried out to achieve balanced operation, safe internet surfing is realized, and stable power supply is carried out externally, so that the wind electricity, the light electricity and the like are no longer garbage electricity. And further, hydrogen is stored in the hydrogen storage device to store energy, so that compared with the existing storage battery, the hydrogen storage battery has the advantages of long period, large capacity, trans-regional capacity and the like.
Drawings
Fig. 1 is a schematic diagram of a hydrogen energy storage system provided in an embodiment of the present application.
Wherein the reference numerals of figure 1 are as follows:
10-a renewable energy power generation device; 20-a first converter; 30-a hydrogen production unit; 40-a hydrogen storage means; 50-a fuel cell device; 60-a second converter; 70-the power grid; 80-electric vehicle.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, the hydrogen energy storage system proposed by the present invention will be described in further detail with reference to fig. 1. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is provided for the purpose of facilitating and clearly illustrating embodiments of the present invention.
As used in this specification, the singular forms "a", "an" and "the" include plural referents, and the plural forms "a plurality" includes more than two referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise, and the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, either a fixed connection or a releasable connection or an integral connection. They may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Referring to the drawings, the present application provides a hydrogen energy storage system comprising: a renewable energy power generation device 10, a first converter 20, a hydrogen production device 30, a hydrogen storage device 40, and a fuel cell device 50. The renewable energy power generation device 10 generates power using renewable energy. The first converter 20 is connected to the renewable energy power generation device 10, and the first converter 20 can transform the electricity generated by the renewable energy power generation device 10. The hydrogen production device 30 is connected to the first converter 20, and the electricity generated by the renewable energy power generation device 10 is converted by the first converter 20 to obtain electricity meeting the needs of the hydrogen production device 30, so as to provide working power for the hydrogen production device 30. The hydrogen production device 30 is also connected with the hydrogen storage device 40, and hydrogen produced by the hydrogen production device 30 is stored in the hydrogen storage device 40. The fuel cell device 50 is connected to the hydrogen storage device 40, the hydrogen storage device 40 supplies hydrogen gas as fuel to the fuel cell device 50, and the fuel cell device 50 generates electrical energy from the hydrogen gas through electrochemical reaction and transmits the electrical energy to the power grid 70.
By directly using the renewable energy power generation device 10 in the hydrogen energy storage system to supply electric energy to the hydrogen production device 30, the hydrogen production device 30 does not need to consume electric energy in the power grid 70, and the load of the power grid 70 does not need to be increased. Therefore, the storage of electricity can be solved by generating hydrogen through the hydrogen production device 30 in a phase-changing manner, a large amount of electric energy is used for electrolyzing water to generate hydrogen at the peak of power generation, the hydrogen is stored in the hydrogen storage device 40, when no light (wind and water energy) exists or the light (wind and water energy) is insufficient in power generation, the hydrogen is converted to generate electric energy through the fuel cell device 50, automatic control and adjustment are carried out to achieve balanced operation, safe internet surfing is achieved, and stable power supply is carried out externally, so that the wind electricity, the light electricity and the like are no longer garbage electricity. And further, the hydrogen is stored in the hydrogen storage device 40 for energy storage, so that compared with the existing storage battery for energy storage, the hydrogen storage battery has the advantages of long cycle, large capacity, trans-regional capacity and the like.
It should be noted that, the electricity output by the renewable energy power generation device 10 may be ac or dc, and the hydrogen production device 30 may operate using ac or dc. The electricity output from the renewable energy power generation device 10 may be alternating current or direct current, and thus the first converter 20 may be an AC/DC converter, a DC/AC converter, an AC/AC converter, and a DC/DC converter. For example, when the renewable energy power generation device 10 outputs alternating current and direct current is required by the hydrogen production device 30, the converter is an AC/DC converter. Similarly, when the renewable energy power generation device 10 outputs AC power and the hydrogen production device 30 requires AC power, the converter is the AC/AC converter to convert the AC power generated by the renewable energy power generation device 10 into AC power that can be used by the hydrogen production device 30. Similarly, when the renewable energy power generation device 10 outputs direct current, the converter may be a DC/AC converter or a DC/DC converter depending on whether direct current or alternating current is required by the hydrogen generation device 30.
The renewable energy power generation device 10 can generate power by using one or more of solar energy, wind energy and water energy. Due to the fact that renewable energy sources in nature, such as solar energy, wind energy and water energy, have high randomness, intermittence and fluctuation, the operation plan of conventional units of a power system and the economy and reliability of the system are changed, and the phenomena of difficult absorption, difficult synchronization, and large light and wind abandonment of the solar energy, the wind energy and the water energy occur. In the hydrogen storage system, the renewable energy power generation device 10 can utilize solar energy, wind energy and water energy to generate electricity, and can utilize abandoned light and abandoned wind to directly act on the hydrogen production device 30, so that the electric energy of the whole hydrogen energy storage system can directly come from the abandoned light, the abandoned wind and the abandoned tidal energy without additionally consuming the electric energy of the power system.
The renewable energy power generation device 10 is composed of one or more unstable and discontinuous power generation stations of a wind power station, a solar photovoltaic power station and a tidal power station; meanwhile, the power supply end of the hydrogen production device 30 is connected in parallel with a feedback power supply device from the power grid 70, and the power grid 70 supplies power to produce hydrogen under the meteorological conditions of wind energy shortage, light energy shortage and water energy shortage. The selection of the renewable energy power generation device 10 may be made according to the region where the hydrogen energy storage system is located. For example, the area where the hydrogen energy storage system is located is only enough in light energy, so that one or more solar photovoltaic power stations can be selected to form the renewable energy power generation device 10; or the area where the hydrogen energy storage system is located has sufficient light energy and sufficient wind energy, so that one or more solar photovoltaic power stations can be selected or the renewable energy power generation device 10 can be formed. This allows for efficient use of local wind, solar and/or tidal energy.
In one embodiment, the electrolysis device is any one or combination of any more of a proton exchange membrane electrolyzer, a solid oxide electrolysis cell and an alkaline electrolyzer. The number of the proton exchange membrane electrolytic cell, the solid oxide electrolytic cell and/or the alkaline electrolytic cell may be one or more, and when the number of the electrolytic devices is plural, the plural electrolytic devices may be any one of the proton exchange membrane electrolytic cell, the solid oxide electrolytic cell and the alkaline electrolytic cell, or the plural electrolytic devices may be any two or more of the proton exchange membrane electrolytic cell, the solid oxide electrolytic cell and the alkaline electrolytic cell. The type and number of the electrolytic cells can be selected according to the amount of hydrogen produced. Wherein the hydrogen energy storage system further comprises a water supply device (not shown in the figure), and the water supply device is connected with the electrolysis equipment to supply electrolysis water for the electrolysis equipment. Wherein, the water supply device can be provided with only one or a plurality of water supply devices.
Wherein the fuel cell device 50 is a proton exchange membrane fuel cell. The proton exchange membrane fuel cell discharges water and vapor in the reaction process, and is zero in pollution. And the energy conversion efficiency can reach 60-70%. Meanwhile, no mechanical vibration, low noise and low heat radiation exist in the working process. And the heat value of the hydrogen is very high, so that the utilization rate of the hydrogen can be improved.
In another embodiment, the hydrogen energy storage system further comprises a second converter 60; the second converter 60 is connected to the fuel cell to convert the electricity generated by the fuel cell so that the electricity is supplied to the grid 70 or to an electrical appliance. In this way, the fuel cell system 50 can directly supplement the electrical power to the electrical network 70 or can be used directly by a power supply. The electric appliance may be a household electric appliance, or may be an electric vehicle 80.
The second converter 60 is a DC/AC converter or a DC/DC converter, and since the electricity output by the fuel cell device 50 is a direct current, the direct current generated by the fuel cell device 50 needs to be converted in order to satisfy the use of the power grid 70 or the electric appliance.
Further, the hydrogen energy storage system further includes a control device, the control device is in communication connection with the renewable energy power generation device 10, the hydrogen energy storage device, the fuel cell and the power grid 70, and the control device can obtain a parameter of power generation amount of the renewable energy power generation device 10, a parameter of hydrogen storage amount of the hydrogen energy storage device, a parameter of generated electric energy of the fuel cell and a load parameter of the power grid 70, and perform electric energy allocation based on the parameter of power generation amount of the renewable energy power generation device 10, the parameter of hydrogen storage amount of the hydrogen energy storage device, the parameter of generated electric energy of the fuel cell and the load parameter of the power grid 70. That is, the control device collects relevant parameters of the renewable energy power generation device 10, the hydrogen energy storage device, the fuel cell, and the power grid 70, processes and analyzes the parameters, and then performs power allocation according to the analysis result. Thus, the utilization rate of electric energy and the activity of hydrogen energy storage are improved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (7)
1. A hydrogen energy storage system, comprising:
a renewable energy power generation device which generates power by using renewable energy;
a first converter connected to the renewable energy power generation device;
a hydrogen-producing assembly, said first converter being coupled to said hydrogen-producing assembly, said first converter converting electricity generated by said renewable energy power generation assembly to provide a suitable power source for said hydrogen-producing assembly;
the hydrogen storage device is connected with the hydrogen production device and is used for storing the hydrogen produced by the hydrogen production device;
the fuel cell device is connected with the hydrogen storage device, the hydrogen storage device supplies hydrogen to the fuel cell device, and the fuel cell device generates electric energy by the hydrogen through electrochemical reaction and transmits the electric energy to a power grid; and (c) a second step of,
the control device is in communication connection with the renewable energy power generation device, the hydrogen storage device, the fuel cell device and the power grid respectively, can acquire parameters of the generated energy of the renewable energy power generation device, parameters of the hydrogen storage amount of the hydrogen storage device, parameters of the generated electric energy of the fuel cell device and load parameters of the power grid, and performs electric energy allocation based on the parameters of the generated energy of the renewable energy power generation device, the parameters of the hydrogen storage amount of the hydrogen storage device, the parameters of the generated electric energy of the fuel cell device and the load parameters of the power grid.
2. The hydrogen energy storage system of claim 1 wherein the renewable energy power generation device is capable of generating electricity from one or more of solar energy, wind energy, and water energy.
3. The hydrogen energy storage system of claim 2 wherein the renewable energy power generation means is comprised of one or more of an unstable, discontinuous power generation station selected from the group consisting of wind power stations, solar photovoltaic power stations, and tidal power generation stations; meanwhile, a power supply end of the hydrogen production device is connected in parallel with a feedback power supply device from a power grid, and hydrogen is produced by power supply of the power grid under the meteorological conditions of wind energy shortage, light energy shortage and water energy shortage.
4. The hydrogen energy storage system of claim 1, wherein the hydrogen production device is an electrolysis device, and further comprising a water supply device connected to the electrolysis device to supply electrolyte to the electrolysis device.
5. The hydrogen energy storage system of claim 4 wherein the electrolysis device is any one or combination of any plurality of proton exchange membrane electrolysis cells, solid oxide electrolysis cells and alkaline electrolysis cells.
6. The hydrogen energy storage system of claim 1, wherein the fuel cell device is a proton exchange membrane fuel cell.
7. The hydrogen energy storage system of claim 1, further comprising a second converter; the second converter is connected with the fuel cell device to convert the electricity generated by the fuel cell device so as to supply power to the power grid or the electric appliance.
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| CN202220780291.0U CN218385296U (en) | 2022-03-31 | 2022-03-31 | Hydrogen energy storage system |
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