Comprehensive energy system integrating new energy power generation and electricity-hydrogen hybrid energy storage

Abstract

According to the new energy power generation and electricity hydrogen hybrid energy storage integrated comprehensive energy system, new energy is used for power generation, and a methane cracking hydrogen production device is used for converting methane into hydrogen to serve as a raw material to be used for power generation of a fuel cell and a micro gas turbine. The problems that due to randomness, volatility and intermittency of wind energy and solar energy, stability energy storage equipment lacks, power supply reliability is reduced, and power supply quality is affected are solved. In addition, the fuel cell and the micro gas turbine take hydrogen as fuel and cannot consume fossil fuel, so that carbon emission and pollution are reduced. Meanwhile, compared with hydrogen production through electrolysis of water, hydrogen production through methane conversion by the methane cracking hydrogen production device, complexity in the energy conversion process is reduced, and the overall energy utilization efficiency is improved. A methane cracking hydrogen production technology is introduced, so that the yield and quality of hydrogen are improved, and the whole process is green, environment-friendly and pollution-free. According to the invention, the energy utilization rate is improved while the carbon emission is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electric-hydrogen coupled integrated energy systems, and specifically to an integrated energy system integrating new energy power generation and electric-hydrogen hybrid energy storage. Background Art

[0002] In order to promote the transformation of energy to green and low-carbon, scholars at home and abroad are committed to building a new energy coupled hydrogen storage integrated energy system including electric hydrogen conversion devices. Figure 1 As shown in the figure, the system meets electricity demand through a variety of energy equipment such as wind turbines, solar photovoltaic panels, fuel cells and gas turbines. When there is an oversupply of electricity, the excess electricity is converted into hydrogen through the electrolyzer and stored in the hydrogen storage tank to meet the demand for hydrogen energy. When the amount of hydrogen stored in the hydrogen storage tank reaches the maximum value, the hydrogen storage is stopped, and the energy management system will start the hydrogen methanation device to convert the hydrogen into methane for storage, and then use the gas turbine to achieve cogeneration of heat, cold and power, thereby achieving efficient conversion between electricity, hydrogen and gas energy. The system mainly has the following problems in actual operation: (1) Weak power supply reliability. Due to the randomness, volatility and intermittency of wind and solar energy, especially in isolated systems, the lack of stable energy storage equipment will lead to a decrease in power supply reliability and affect the quality of power supply. (2) Emission pollution problems. The operation of traditional gas turbines and boilers requires the consumption of fossil energy, which has the disadvantages of high carbon emissions and high pollution. (3) Low energy utilization efficiency. The complexity of the energy conversion process of water electrolysis hydrogen production technology also leads to a decrease in overall energy utilization efficiency.

[0003] Faced with the above problems, how to improve energy utilization while reducing carbon emissions has become a key issue that technicians in this field urgently need to solve. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage, aiming to solve the problems raised in the technical background and achieve the goal of reducing carbon emissions while improving energy utilization.

[0005] In order to solve the above technical problems, the implementation scheme provided by the present invention is to provide a comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage, including a new energy power generation unit, a fuel cell and a micro gas turbine. The electric energy generated by the new energy power generation unit is connected to the busbar and incorporated into the power grid, and also includes: A methane cracking hydrogen production device is used to convert methane into hydrogen. The first part of the cracked hydrogen is sent to a fuel cell, and the electric energy generated by the fuel cell is connected to a busbar and integrated into a power grid. The second part of the cracked hydrogen is sent to a micro gas turbine, and the micro gas turbine is connected to the fuel cell, and is used to start the micro gas turbine with the heat generated by the fuel cell, and the electric energy generated by the micro gas turbine is connected to a busbar and integrated into a power grid. The power storage unit is connected to the busbar and integrated into the power grid, and can also store the power in the busbar; A heat storage unit is connected to the micro gas turbine and is used to store heat energy generated by the micro gas turbine; A hydrogen storage unit connected to the methane cracking hydrogen production device and used to store hydrogen cracked by the third part of the methane cracking hydrogen production device, and the hydrogen storage unit is also connected to a hydrogen load device; The refrigeration unit is connected to the micro gas turbine and is used for providing cold flow to the micro gas turbine and outputting cold capacity.

[0006] Preferably, the methane cracking hydrogen production device is also connected to a hydrogen methanation unit, the hydrogen methanation unit is connected to a busbar, and the hydrogen methanation unit is also connected to a carbon capture and storage utilization system, and the hydrogen methanation unit is used to convert the carbon dioxide captured by the carbon capture and storage utilization system into methane gas through electrical energy.

[0007] Preferably, the hydrogen methanation unit is also connected to a natural gas load-end device.

[0008] Preferably, the hydrogen storage unit is connected to an electrolyzer, and the electrolyzer is connected to a busbar via an AC / DC converter.

[0009] Preferably, the hydrogen load equipment is a fuel cell vehicle and a hydrogen locomotive, and the hydrogen storage unit is connected to the fuel cell vehicle and the hydrogen locomotive respectively through a hydrogen refueling station.

[0010] Preferably, the new energy power generation unit includes wind power generation and photovoltaic power generation. The wind power generation is connected to the bus through an AC / DC converter and a DC / AC converter and is integrated into the power grid. The photovoltaic power generation is connected to the bus through a DC / AC converter and is integrated into the power grid. The power storage unit is also connected to the bus through a DC / AC converter and is integrated into the power grid.

[0011] Preferably, the busbar is connected to an AC load device via a conductor, and the busbar can also be connected to a DC load device via an AC / DC converter and a conductor.

[0012] Preferably, the fuel cell is a high temperature solid oxide fuel cell.

[0013] Preferably, the power storage unit is a power storage device composed of a lithium battery and a supercapacitor.

[0014] Preferably, the heat storage unit is a molten salt storage tank, which is connected to a hot gas load device; the refrigeration unit is an endothermic refrigerator, which is connected to a cold load device.

[0015] The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage proposed in the present invention has particularly significant technical advantages and innovative effects compared with the existing technology, which can be summarized as follows: (1) The system provided by the present invention not only uses new energy to generate electricity, but also uses a methane cracking hydrogen production device to convert methane into hydrogen as a raw material for fuel cell and micro gas turbine power generation. There is no problem that wind energy and solar energy, due to their randomness, volatility and intermittency, lack of stable energy storage equipment will lead to a decrease in power supply reliability and affect the quality of power supply. In addition, fuel cells and micro gas turbines use hydrogen as fuel and do not consume fossil fuels, thus reducing carbon emissions and pollution. At the same time, the methane cracking hydrogen production device converts methane to produce hydrogen, compared with the electrolysis of water to produce hydrogen, which reduces the complexity of the energy conversion process and improves the overall energy utilization efficiency. The introduction of methane cracking hydrogen production technology not only improves the output and quality of hydrogen, but also makes the whole process green, environmentally friendly and pollution-free.

[0016] (2) The present invention has the characteristics of multi-energy integration and green circulation: The present invention creatively integrates hydrogen energy with renewable energy such as wind and solar power to build a green circulation system from electricity generation, hydrogen preparation, efficient storage to terminal application. In this process, not only the closed-loop process of electricity-hydrogen production-hydrogen storage-hydrogen use is realized, but also the multi-generation of cooling, heating and electricity is promoted simultaneously, thereby significantly reducing carbon emissions while significantly improving the comprehensive utilization efficiency of energy, setting a new benchmark for sustainable development in the energy field.

[0017] (3) The present invention is characterized by technological innovation and low-carbon leadership: The present invention introduces the cutting-edge technology of high-temperature solid oxide fuel cells as an innovative alternative to the traditional micro gas turbine combustion chamber. This measure not only greatly improves the energy conversion efficiency of the system, but also achieves deep low-carbonization of system operation, leading a new direction in energy utilization technology.

[0018] (4) The present invention uses hydrogen energy as a bridge and makes efficient use of it: The present invention uses hydrogen energy as the core medium of the system, giving full play to its advantages of high energy density and flexibility, and effectively promoting the stable supply and maximum utilization of intermittent energy such as wind and solar. On this basis, the coordinated work of the micro gas turbine and the waste heat utilization device further broadens the output range of the system, realizing the synchronous supply and efficient conversion of cold, heat and electricity. This design mode of multi-energy input and multi-product output not only improves the overall utilization rate of wind and solar power generation and hydrogen energy, but also realizes the cascade utilization of energy and the maximization of comprehensive benefits.

[0019] (5) The present invention combines the carbon capture and storage system (CCUS) with the hydrogen methanation unit through electric energy, and absorbs the carbon dioxide emitted by the thermal power plant on-site during the hydrogen methanation process, thereby achieving carbon cycle and emission reduction goals and reducing carbon emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a flow chart of the integrated energy system of the prior art.

[0021] Figure 2 This is a flow chart of the comprehensive energy system of the present invention.

[0022] Description of reference numerals: 1. Fuel cell; 2. Micro gas turbine; 3. Methane cracking hydrogen production device; 4. Power storage unit; 5. Heat storage unit; 6. Hydrogen storage unit; 7. Refrigeration unit; 8. Hydrogen methanation unit; 9. Electrolyzer; 10. Fuel cell vehicle; 11. Hydrogen locomotive; 12. Hydrogen refueling station; 13. Wind power generation; 14. Photovoltaic power generation; 15. AC load equipment; 16. DC load equipment; 17. Cold load equipment; 18. Hot gas load equipment. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The inventors have found that the existing new energy coupled hydrogen storage system including electric hydrogen conversion has shortcomings, that is, it does not take into account the intermittent characteristics of new energy power generation, resulting in low utilization rate of electricity generated by new energy. The present invention aims to improve the energy utilization rate of the new energy coupled hydrogen storage comprehensive energy system and proposes a new feasible solution to solve this problem.

[0025] In view of this, the present invention provides a comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage. The system aims to promote the deep integration of hydrogen energy and new energy through a variety of energy complementary strategies, and to build a green circular energy system from electricity production to hydrogen preparation, storage, application and combined heat and power generation, thereby significantly reducing carbon emissions and making efficient use of energy.

[0026] like Figure 2As shown, the present invention provides a comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage, including a new energy power generation unit, a fuel cell 1 and a micro gas turbine 2. The electric energy generated by the new energy power generation unit is connected to the busbar and integrated into the power grid. The system also includes: a methane cracking hydrogen production device 3, an electricity storage unit 4, a heat storage unit 5, a hydrogen storage unit 6 and a refrigeration unit 7. The methane cracking hydrogen production device 3 is used to convert methane into hydrogen. The first part of the cracked hydrogen is sent to the fuel cell 1, and the electric energy generated by the fuel cell 1 is connected to the busbar and integrated into the power grid. The second part of the cracked hydrogen is sent to the micro gas turbine 2. The micro gas turbine 2 is connected to the fuel cell 1 and is used to start the micro gas turbine 2 with the heat generated by the fuel cell 1. The electric energy generated by the micro gas turbine 2 is connected to the busbar and integrated into the power grid; the electricity storage unit 4 is connected to the busbar and integrated into the power grid, and can also store the electric energy in the busbar; the heat storage unit 5 is connected to the micro gas turbine 2 and is used to store the heat generated by the micro gas turbine 2; The hydrogen storage unit 6 is connected to the methane cracking hydrogen production device 3, and is used to store the hydrogen cracked by the third part of the methane cracking hydrogen production device 3. The hydrogen storage unit 6 is also connected to the hydrogen load equipment; the refrigeration unit 7 is connected to the micro gas turbine 2, and is used to provide cold flow for the micro gas turbine 2 and output cold capacity.

[0027] The system reduces carbon emissions while improving energy utilization. The invention creatively integrates hydrogen energy with renewable energy sources such as wind and solar power to build a green cycle system from electricity generation, hydrogen preparation, efficient storage to terminal applications. In this process, not only is the closed-loop process of electricity-hydrogen production-hydrogen storage-hydrogen use realized, but the multi-generation of cold, heat and electricity is also promoted simultaneously, thereby significantly reducing carbon emissions while significantly improving the comprehensive utilization efficiency of energy, setting a new benchmark for sustainable development in the energy field.

[0028] The power supply of the system provided by the present invention is reliable. This is because the system not only uses new energy to generate electricity, but also uses the methane cracking hydrogen production device 3 to crack and convert methane to prepare hydrogen. Hydrogen has the characteristics of high energy density. It is used as a raw material for fuel cells and micro gas turbines to generate electricity. There will be no problems such as wind energy and solar energy due to their randomness, volatility and intermittency, and the lack of stable energy storage equipment will lead to a decrease in power supply reliability and affect the power supply quality. At the same time, fuel cells and micro gas turbines will not consume fossil fuels when using hydrogen as fuel, thereby reducing carbon emissions and pollution. At the same time, the methane cracking hydrogen production device 3 compares the hydrogen prepared by methane cracking and conversion with hydrogen produced by electrolysis of water, which reduces the complexity of the energy conversion process and improves the overall energy utilization efficiency. The introduction of methane cracking hydrogen production technology not only improves the output and quality of hydrogen, but also makes the whole process green, environmentally friendly and pollution-free.

[0029] Specifically, the methane cracking hydrogen production device 3 is also connected to the hydrogen methanation unit 8, the hydrogen methanation unit 8 is connected to the bus, and the hydrogen methanation unit 8 is also connected to the carbon capture and storage utilization system. The hydrogen methanation unit 8 is used to convert the carbon dioxide captured by the carbon capture and storage utilization system into methane gas through electrical energy. The introduction of methane cracking hydrogen production technology not only improves the output and quality of hydrogen, but also makes the whole process green, environmentally friendly and pollution-free. In addition, the hydrogen methanation unit 8 combines the carbon capture and storage utilization technology (CCUS) adopted by the carbon capture and storage application system to absorb carbon dioxide emitted by the thermal power plant on-site during the hydrogen methanation process, thereby achieving carbon cycle and emission reduction goals.

[0030] Specifically, the hydrogen methanation unit 8 is also connected to the natural gas load-end equipment.

[0031] The surplus electricity generated by renewable energy is used to electrolyze hydrogen, and then electricity, water and carbon dioxide in the atmosphere are used to produce methane through methanation reaction to provide natural gas. This method can not only provide fuel for dual-fuel vehicles, but also convert excess electricity into natural gas, which is then transported to the natural gas pipeline network, achieving effective energy conversion and storage.

[0032] Specifically, the hydrogen storage unit 6 is connected to the electrolytic cell 9, and the electrolytic cell 9 is connected to the busbar via an AC / DC converter.

[0033] Hydrogen production by water electrolysis can convert difficult-to-store electrical energy into hydrogen energy for storage, which can achieve large-scale, long-term, and wide-area energy storage, and help solve the problem of renewable energy consumption. Hydrogen can be used in fuel cell vehicles, industrial production, cogeneration of heat and power, and other fields.

[0034] Specifically, the hydrogen load equipment is a fuel cell vehicle 10 and a hydrogen locomotive 11, the hydrogen storage unit 6 is also connected to a hydrogen refueling station 12, and the hydrogen refueling station 12 is respectively connected to the fuel cell vehicle 10 and the hydrogen locomotive 11, the hydrogen storage unit 6 is a hydrogen storage tank, and the interconnection between the hydrogen storage tank and the hydrogen refueling station 12 makes the hydrogen energy storage of this system more practical and also helps to promote the improvement and development of the hydrogen energy industry chain.

[0035] Specifically, this system integrates wind power generation 13 and photovoltaic power generation 14 into the system to reduce carbon emissions. Here is a specific structure of the new energy power generation unit, which includes wind power generation 13 and photovoltaic power generation 14. Wind power generation 13 is connected to the bus through an AC / DC converter and a DC / AC converter and is integrated into the grid. Photovoltaic power generation 14 is connected to the bus through a DC / AC converter and is integrated into the grid. The power storage unit 4 is also connected to the bus through a DC / AC converter and is integrated into the grid.

[0036] Specifically, the busbar is connected to the AC load device 15 through a conductor, and the busbar can also be connected to the DC load device 16 through an AC / DC converter and a conductor.

[0037] The AC bus serves as a channel for transmitting electric energy in the integrated energy system of the present invention, and can realize direct transmission and distribution of electric energy. AC load equipment 15 such as motors, lighting equipment, etc. can directly connect to the AC bus through wires to obtain electric energy. DC load equipment 16 such as electric vehicles need to be connected to the AC bus through AC / DC converters to obtain electric energy. The purpose is to realize the transmission, distribution and conversion of electric energy to meet the needs of different load equipment.

[0038] Specifically, the fuel cell 1 is a high-temperature solid oxide fuel cell. This system introduces the cutting-edge technology of high-temperature solid oxide fuel cells as an innovative alternative to the combustion chamber of the traditional micro gas turbine 2. This measure not only greatly improves the energy conversion efficiency of the system, but also realizes the deep low-carbonization of the system operation, leading a new direction in energy utilization technology.

[0039] Specifically, the power storage unit 4 is a power storage device composed of a lithium battery and a supercapacitor. This system adopts a hybrid energy storage collaborative control strategy of lithium batteries and supercapacitors, integrating the high energy density of lithium batteries and the excellent power characteristics of supercapacitors, greatly improving the power jump regulation capability in the energy network, and significantly enhancing the power supply reliability of the system. In particular, with the use of supercapacitors, the system source-load regulation response is more agile to ensure that the system can cross faults and operate stably under extreme working conditions.

[0040] Specifically, the heat storage unit 5 is a molten salt storage tank, which is connected to the hot gas load device 18 , and the refrigeration unit 7 is an endothermic refrigerator, which is connected to the cold load device 17 .

[0041] The micro gas turbine 2 is connected to a molten salt storage tank, and uses the molten salt in the molten salt storage tank to store waste heat and provide heat for the hot gas load device 18. The micro gas turbine 2 is also connected to an endothermic refrigerator, and uses the endothermic refrigerator to further cool the cold flow discharged by the micro gas turbine 2 and provide cooling for the cold load device 17.

[0042] The technical advantages and innovative effects demonstrated by the present invention are particularly significant, which can be summarized as follows: (1) Multi-energy integration, green cycle: The present invention creatively integrates hydrogen energy with renewable energy such as wind and solar power to build a green cycle system from electricity generation, hydrogen preparation, efficient storage to terminal application. In this process, not only the closed-loop process of electricity-hydrogen production-hydrogen storage-hydrogen use is realized, but also the multi-generation of cooling, heating and electricity is promoted simultaneously, thereby significantly reducing carbon emissions while significantly improving the comprehensive utilization efficiency of energy, setting a new benchmark for sustainable development in the energy field.

[0043] (2) Technological innovation, low-carbon leadership: This invention introduces the cutting-edge technology of high-temperature solid oxide fuel cells as an innovative alternative to the traditional micro gas turbine 2 combustion chamber. This measure not only greatly improves the energy conversion efficiency of the system, but also achieves deep low-carbonization of system operation, leading a new direction in energy utilization technology.

[0044] (3) Hydrogen energy bridge, efficient utilization: The present invention uses hydrogen energy as the core medium of the system, giving full play to its advantages of high energy density and flexibility, and effectively promoting the stable supply and maximum utilization of intermittent energy such as wind and solar. On this basis, the coordinated work of the micro gas turbine 2 and the waste heat utilization device further broadens the output range of the system, realizing the synchronous supply and efficient conversion of cold, heat and electricity. This design mode of multi-energy input and multi-product output not only improves the overall utilization rate of wind and solar power generation and hydrogen energy, but also realizes the cascade utilization of energy and the maximization of comprehensive benefits.

[0045] (4) The present invention combines the carbon capture and storage system (CCUS) with the hydrogen methanation unit 8 through electric energy, and absorbs the carbon dioxide emitted by the thermal power plant on-site during the hydrogen methanation process, thereby achieving carbon cycle and emission reduction goals and reducing carbon emissions.

[0046] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A comprehensive energy system integrating renewable energy power generation and electric-hydrogen hybrid energy storage, comprising a renewable energy power generation unit, a fuel cell (1) and a micro gas turbine (2), wherein the electric energy generated by the renewable energy power generation unit is connected to a busbar and incorporated into a power grid, and characterized in that: Also includes: A methane cracking hydrogen production device (3) is used to convert methane into hydrogen, wherein a first portion of the cracked hydrogen is fed into a fuel cell (1), and the electric energy generated by the fuel cell (1) is connected to a bus bar and incorporated into a power grid, and a second portion of the cracked hydrogen is fed into a micro gas turbine (2), wherein the micro gas turbine (2) is connected to the fuel cell (1) and is used to start the micro gas turbine (2) with the heat generated by the fuel cell (1), and the electric energy generated by the micro gas turbine (2) is connected to a bus bar and incorporated into a power grid; The power storage unit (4) is connected to the busbar and connected to the power grid, and can also store the power in the busbar; A heat storage unit (5) connected to the micro gas turbine (2) and used for storing heat energy generated by the micro gas turbine (2); A hydrogen storage unit (6) is connected to the methane cracking hydrogen production device (3) and is used to store hydrogen cracked by the third methane cracking hydrogen production device (3); the hydrogen storage unit (6) is also connected to a hydrogen load device; A refrigeration unit (7) is connected to the micro gas turbine (2) and is used to provide a cold flow to the micro gas turbine (2) and output cold energy.

2. According to claim 1, a comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage is characterized in that: The methane cracking hydrogen production device (3) is also connected to a hydrogen methanation unit (8), the hydrogen methanation unit (8) is connected to a busbar, and the hydrogen methanation unit (8) is also connected to a carbon capture and storage utilization system, and the hydrogen methanation unit (8) is used to convert carbon dioxide captured by the carbon capture and storage utilization system into methane gas through electrical energy.

3. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 2 is characterized in that: The hydrogen methanation unit (8) is also connected to the natural gas load-end equipment.

4. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 1 is characterized in that: The hydrogen storage unit (6) is connected to an electrolytic cell (9), and the electrolytic cell (9) is connected to a busbar via an AC / DC converter.

5. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 1 or 2, characterized in that: The hydrogen load equipment is a fuel cell vehicle (10) and a hydrogen locomotive (11); the hydrogen storage unit (6) is also connected to a hydrogen refueling station (12); and the hydrogen refueling station (12) is respectively connected to the fuel cell vehicle (10) and the hydrogen locomotive (11).

6. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 1 is characterized in that: The new energy power generation unit comprises a wind power generation (13) and a photovoltaic power generation (14). The wind power generation (13) is connected to a busbar through an AC / DC converter and a DC / AC converter and is integrated into a power grid. The photovoltaic power generation (14) is connected to a busbar through a DC / AC converter and is integrated into a power grid. The power storage unit (4) is also connected to a busbar through a DC / AC converter and is integrated into a power grid.

7. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 1 is characterized in that: The busbar is connected to an AC load device (15) via a conductor, and the busbar can also be connected to a DC load device (16) via an AC / DC converter and a conductor.

8. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 1 is characterized in that: The fuel cell (1) is a high-temperature solid oxide fuel cell.

9. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 1 is characterized in that: The power storage unit (4) is a power storage device composed of a lithium battery and a supercapacitor.

10. The comprehensive energy system integrating new energy power generation and electric-hydrogen hybrid energy storage according to claim 1 is characterized in that: The heat storage unit (5) is a molten salt storage tank, which is connected to a hot gas load device (18); the refrigeration unit (7) is an endothermic refrigerator, which is connected to a cold load device (17).

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