Wind-light-hydrogen storage combustion comprehensive energy supply system and operation method thereof

Abstract

The invention provides a wind-light hydrogen storage combustion comprehensive energy supply system and an operation method thereof, and relates to the technical field of new energy power generation and comprehensive utilization, the wind-light hydrogen storage combustion comprehensive energy supply system comprises a wind-light power generation and energy storage system, a green electricity hydrogen and oxygen production system, a pure hydrogen simple power generation system, a waste heat supply system and a waste heat cooling system; the system integrates hydrogen energy power generation, waste heat recovery, cold and heat storage and terminal energy supply, and deep coupling of wind, light and hydrogen storage and combustion is achieved. According to the method, by monitoring and controlling different loads, multi-device operation priority ranking of the comprehensive energy system is achieved, multiple economic energy supply operation modes are provided, the technical effects of stabilizing wind and light intermittency and enhancing cooling and heating reliability are achieved, the comprehensive energy utilization efficiency of the system can be improved by 10%-15%, and the economical efficiency of the comprehensive energy project can be improved by 5%-10%.

Description

Technical Field

[0001] This application relates to the field of new energy power generation and comprehensive utilization technology, and in particular to a wind-solar-hydrogen-storage-fuel integrated energy supply system and its operation method. Background Technology

[0002] In the process of building a new power system with new energy as the main body, the integrated energy system of wind, solar, hydrogen, storage and combustion is the core technology direction for promoting energy transformation. At present, the technology in this field is moving from demonstration projects to large-scale applications. The related technologies are mostly focused on the coupling of wind, solar and hydrogen energy, hydrogen energy storage and transportation, multi-energy complementarity of hydrogen combustion and intelligent system control. Although it includes the architecture of wind and solar, hydrogen storage and production, and hydrogen combustion units and balances supply and demand through power monitoring, it has limitations such as single hydrogen storage form, no recovery of combustion waste heat and extensive control strategy, which makes it difficult to adapt to the demand for efficient energy supply.

[0003] Meanwhile, key issues facing related technologies constrain system performance improvement: First, the inherent intermittency and volatility of wind and solar power lead to unstable power output, easily causing "wind and solar curtailment," and require reliance on grid peak shaving or backup power to ensure continuous power supply, increasing operating costs; Second, hydrogen energy utilization is mostly "single-link coupling," only converting excess electricity into hydrogen energy storage, without forming a closed loop with hydrogen power generation, waste heat utilization, and end-user cooling and heating, resulting in a broken energy utilization chain; Third, the integrated energy system's cold and heat storage devices are disconnected from the wind, solar, and hydrogen systems, making it impossible to effectively shaving peaks during peak electricity or energy consumption, resulting in low overall system energy utilization rate; Fourth, the reliability of end-user cooling and heating is insufficient, with a high proportion of traditional single energy supply methods such as electric cooling and gas heating, and low utilization rate of waste heat from high-temperature flue gas emitted by gas turbines, resulting in energy waste; Fifth, electrochemical energy storage can only meet short-term electricity buffering needs and cannot adapt to long-term energy storage needs across days and seasons, further affecting the system's energy supply stability and economy. Summary of the Invention

[0004] This application provides a wind-solar-hydrogen-storage-gas integrated energy supply system and its operation method, which can solve the problems in related technologies such as poor stability of single renewable energy sources, energy supply and demand mismatch, insufficient clean energy consumption, low comprehensive energy utilization efficiency, lack of reliability in cooling and heating, and poor economic performance.

[0005] According to a first aspect of this application, a wind-solar-hydrogen-storage-gas integrated energy supply system is provided, comprising: Wind and solar power generation and energy storage systems, green electricity hydrogen and oxygen production systems, pure hydrogen simple power generation systems, waste heat heating systems and waste heat cooling systems; The wind and solar power generation and energy storage system is connected to the green electricity hydrogen and oxygen production system to generate green electricity, distribute the green electricity to the green electricity hydrogen and oxygen production system, and connect the excess green electricity to the grid or store it in the electrochemical energy storage system to release electricity to supplement the power supply when the wind and solar power generation power is insufficient. The green electricity hydrogen and oxygen production system is connected to the pure hydrogen simple power generation system. It is used to produce hydrogen and oxygen by electrolyzing water with green electricity, purifying, cooling, refining and compressing the hydrogen and oxygen, and then exporting the hydrogen to the hydrogen filling station and the pure hydrogen simple power generation system according to a preset ratio.

[0006] The pure hydrogen simple power generation system is connected to the waste heat heating system to generate electricity using hydrogen to meet the peak demand of insufficient wind and solar power generation, providing stable rotational inertia, while transferring the high-temperature flue gas waste heat discharged from the gas turbine to the waste heat heating system and waste heat cooling system.

[0007] The waste heat heating system is connected to the waste heat cooling system to recover waste heat and deliver it to the hydrogen production station heating system to meet the building heating needs in winter. When the waste heat is insufficient, the hot water storage tank is used to supplement the heating. When the hot water storage tank is depleted, the electric boiler is started to supplement the heating, while providing the heat base for the waste heat cooling system.

[0008] The waste heat cooling system is connected to the green electricity hydrogen and oxygen production system to utilize waste heat to generate cooling capacity, providing process cooling capacity for the green electricity hydrogen and oxygen production system, meeting the summer building cooling needs of the hydrogen production station, and starting electric chiller units to provide cooling in conjunction with waste heat when the waste heat cooling capacity is insufficient.

[0009] Optionally, the wind and solar power generation and energy storage system includes wind power generation system, photovoltaic power generation system, wind and solar booster station, electrochemical energy storage system and power grid; The output terminals of both the wind power generation system and the photovoltaic power generation system are connected to the wind-solar booster station, which in turn is connected to the electrochemical energy storage system, the power grid, and the transformer group of the hydrogen production station.

[0010] Optionally, the green electricity hydrogen and oxygen production system includes a hydrogen production station transformer group, rectifier, electrolyzer, oxygen separation and storage unit, hydrogen separation and storage unit and hydrogen filling station; The transformer group of the hydrogen production station is connected to the power grid and the rectifier, respectively. The rectifier is connected to the electrolyzer, and the electrolyzer is connected to the oxygen separation and storage unit and the hydrogen separation and storage unit, respectively.

[0011] Optionally, the oxygen separation and storage unit and the hydrogen separation and storage unit include: The oxygen separation and storage unit includes an oxygen separator, an oxygen scrubber, an oxygen cooler, and an oxygen storage tank connected in sequence. The hydrogen separation and storage unit includes a hydrogen separator, a hydrogen scrubber, a hydrogen cooler, a hydrogen purification system, a hydrogen compression system, and a hydrogen storage tank connected in sequence. The hydrogen storage tanks are connected to the hydrogen filling station and the hydrogen pressure regulating station, respectively.

[0012] Optional, a simple pure hydrogen power generation system includes a hydrogen pressure regulating station, an air compressor, a combustion chamber, a gas turbine, and a flue gas hot water heat exchanger; The hydrogen pressure regulating station is connected to the combustion chamber, which is connected to the air compressor and the gas turbine, and the gas turbine is connected to the flue gas hot water heat exchanger.

[0013] Optionally, the waste heat heating system includes a flue gas hot water heat exchanger, a heating pump set, a heating water distributor, a hydrogen production station heating system, a hot water storage tank, and an electric boiler. The flue gas hot water heat exchanger is connected to the hot water type lithium bromide unit via electric valve a, and is also connected to the heating supply water pump 1 and the heating return water pump 1 respectively; the heating supply water pump 1 is connected to the heating water distributor, the heating water distributor is connected to the hydrogen production station heating system via electric valve b, and connected to the hot water storage tank via electric valve c; the hot water storage tank is connected to the hydrogen production station heating system via electric valve d and heating supply water pump 2; the hydrogen production station heating system is connected to the electric boiler via heating supply water pump 3 and electric valve e, and the electric boiler is connected to the heating return water pump 2.

[0014] Optionally, the waste heat cooling system includes a hot water type lithium bromide chiller, an electric chiller, a chilled water supply and return pump set, a chilled water supply manifold, a chilled water supply distributor, a chilled water return distributor, a cooling tower, and a circulating cooling water pump set. The hot water type lithium bromide unit is connected to the chilled water supply pump 1 and the chilled water return distributor, respectively. The chilled water supply pump 1 is connected to the chilled water supply manifold, and the chilled water supply manifold is connected to the chilled water supply pump 2 and the electric chiller unit via electric valve f. The chilled water supply distributor is connected to the oxygen cooler, hydrogen cooler, hydrogen purification system, hydrogen compression system and hydrogen production station cooling system, respectively. The hydrogen production station cooling system is connected to the chilled water return pump 1 via the chilled water return manifold, and the chilled water return pump 1 is connected to the chilled water return distributor. The electric chiller unit is connected to the cooling tower via electric valve i, the circulating cooling water pump set and the cooling tower.

[0015] According to a second aspect of this application, an operation method for a wind-solar-hydrogen-storage-gas integrated energy supply system is provided, comprising: Based on the real-time matching status between wind and solar power generation and hydrogen production power at the hydrogen production station, the pure hydrogen power generation operation mode or the pure hydrogen non-power generation operation mode is dynamically switched. Based on the pure hydrogen power generation operation mode or the pure hydrogen non-power generation operation mode, the above-mentioned waste heat heating system and the above-mentioned waste heat cooling system are controlled to operate different preset cooling or heating schemes according to the cooling season, heating season and transition season.

[0016] Optionally, when the wind and solar power generation is less than the hydrogen production capacity of the hydrogen production station, the electrochemical energy storage is activated first, and the stored electricity is connected to the grid through the wind and solar booster station. At the same time, the pure hydrogen simple power generation system is turned on for peak shaving. At this time, the wind and solar power generation and energy storage system, the green electricity hydrogen and oxygen production system, and the pure hydrogen simple power generation system are all in operation. When the power output of wind and solar power generation exceeds the hydrogen production capacity of the hydrogen production station, electrochemical energy storage is activated first. Excess electricity is fed into the grid through the wind and solar booster station. At this time, the wind and solar power generation and energy storage system, as well as the green electricity hydrogen and oxygen production system, are in operation, while the pure hydrogen simple power generation system is not in operation.

[0017] Optionally, when the operating mode is pure hydrogen power generation, during the cooling season, a preset cooling scheme is invoked based on the comparison between the sum of the process cooling load and the cooling load of the hydrogen production station's cooling system and the cooling load of the hot water lithium bromide unit; during the heating season, a preset heating scheme is invoked based on the comparison between the heat load of the hydrogen production station's heating system and the heat load of the flue gas hot water lithium bromide unit; during the transition season, a preset transition scheme is invoked based on the comparison between the process cooling load and the cooling load of the hot water lithium bromide unit. When the operating mode is pure hydrogen without power generation, during the cooling season, the electric chiller unit is started to provide cooling for the process cooling load and the cooling load of the hydrogen production station cooling system; during the heating season, the hot water storage tank is used for heating first. When the hot water in the storage tank is used up, the electric boiler is started for heating, while the process cooling load is provided by the electric chiller unit; during the transition season, the electric chiller unit is started to provide cooling for the process cooling load.

[0018] This application provides a wind-solar-hydrogen-storage-gas integrated energy supply system and its operation method, comprising: a wind-solar power generation and storage system, a green electricity-to-hydrogen-oxygen system, a pure hydrogen simple power generation system, a waste heat heating system, and a waste heat cooling system; the wind-solar power generation and storage system is connected to the green electricity-to-hydrogen-oxygen system to generate green electricity, which is then distributed to the green electricity-to-hydrogen-oxygen system, and excess green electricity is fed into the power grid or stored in the electrochemical energy storage system to supplement power supply when wind and solar power generation is insufficient; the green electricity-to-hydrogen-oxygen system is connected to the pure hydrogen simple power generation system to produce hydrogen and oxygen by electrolyzing water with green electricity, purifying, cooling, refining, and compressing the hydrogen and oxygen for storage, and externally transmitting hydrogen to the hydrogen filling station and the pure hydrogen simple power generation system according to a preset ratio; the pure hydrogen simple power generation system is connected to the waste heat heating system to generate electricity using hydrogen to meet the peak-shaving demand when wind and solar power generation is insufficient, providing stable rotational inertia, and simultaneously transferring the waste heat from the high-temperature flue gas discharged from the gas turbine to the waste heat heating system and the waste heat cooling system. The waste heat heating system is connected to the waste heat cooling system to recover waste heat and supply it to the hydrogen production station's heating system to meet the building's heating needs in winter. When waste heat is insufficient, a hot water storage tank is used to supplement heating. When the hot water storage tank is depleted, an electric boiler is started to supplement heating, while simultaneously providing the heat base for the waste heat cooling system. The waste heat cooling system is connected to the green electricity hydrogen and oxygen production system to utilize waste heat to generate cooling capacity, providing process cooling capacity for the green electricity hydrogen and oxygen production system and meeting the building's cooling needs in summer at the hydrogen production station. When the waste heat cooling capacity is insufficient, an electric refrigeration unit is started to provide cooling in conjunction with the system. This application integrates wind and solar power generation and energy storage systems, green electricity hydrogen and oxygen production systems, pure hydrogen simple power generation systems, waste heat heating systems, and waste heat cooling systems. It achieves deep coupling of green electricity supply and storage, hydrogen and oxygen preparation and distribution, pure hydrogen power generation peak shaving, waste heat recovery and utilization, and coordinated supplementation of cooling and heating. Therefore, it can solve the problems in related technologies caused by poor stability of single renewable energy sources, energy supply and demand mismatch, insufficient clean energy consumption, low comprehensive energy utilization efficiency, lack of reliability of cooling and heating, and poor economic efficiency. It achieves the technical effects of mitigating the intermittency of wind and solar power, improving the comprehensive energy utilization efficiency of the system, enhancing the reliability of cooling and heating, reducing the cost of terminal energy supply and grid peak shaving, and expanding the adaptability and commercial value of multiple scenarios.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0020] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a wind-solar-hydrogen-storage-gas integrated energy supply system provided in an embodiment of this application; Figure 2 This is a schematic diagram of another integrated wind-solar-hydrogen-storage-gasoline energy supply system provided in an embodiment of this application; Figure 3 This is a flowchart illustrating the operation method of a wind-solar-hydrogen-storage-gas integrated energy supply system provided in an embodiment of this application.

[0022] In the diagram: 1. Wind power generation system; 2. Photovoltaic power generation system; 3. Wind-solar booster station; 4. Electrochemical energy storage system; 5. Power grid; 6. Transformer group of hydrogen production station; 7. Rectifier; 8. Electrolyzer; 9. Oxygen separator; 10. Oxygen scrubber; 11. Oxygen cooler; 12. Oxygen storage tank; 13. Hydrogen separator; 14. Hydrogen scrubber; 15. Hydrogen cooler; 16. Hydrogen purification system; 17. Hydrogen compression system; 18. Hydrogen storage tank; 19. Hydrogen filling station; 20. Hydrogen pressure regulating station; 21. Air compressor; 22. Combustion chamber; 23. Gas turbine; 24. Flue gas hot water heat exchanger; 25. Heating system of hydrogen production station; 26. Electric boiler; 27. Hot water storage tank; 28. Hot water type lithium bromide unit; 29. ​​Electric refrigeration unit; 30. Cooling tower; 31. Hydrogen production station cooling system; F-1, heating water distributor; F-2, chilled water supply water distributor; F-3, chilled water return water distributor; H-1, chilled water supply manifold; H-2, chilled water return manifold; P-1, heating water supply pump 1; P-2, heating water supply pump 2; P-3, heating water return pump 1; P-4, heating water supply pump 3; P-5, heating water return pump 2; P-6, chilled water supply pump 1; P-7, chilled water supply pump 2; P-8, chilled water return pump 1; P-9, chilled water return pump 2; P-10, circulating cooling water supply pump; P-11, circulating cooling water return pump; a, electric valve a; b, electric valve b; c, electric valve c; d, electric valve d; e, electric valve e; f, electric valve f; g, electric valve g; h, electric valve h; i, electric valve i. Detailed Implementation

[0023] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0024] The following description, with reference to the accompanying drawings, illustrates an integrated wind-solar-hydrogen-storage-gasoline energy supply system and its operation method, according to embodiments of this application.

[0025] Figure 1 This is a schematic diagram of the structure of a wind-solar-hydrogen-storage-gas integrated energy supply system provided in an embodiment of this application, as shown below. Figure 1 As shown, the system includes: Wind and solar power generation and energy storage systems, green electricity hydrogen and oxygen production systems, pure hydrogen simple power generation systems, waste heat heating systems and waste heat cooling systems; The wind and solar power generation and energy storage system is connected to the green electricity hydrogen and oxygen production system to generate green electricity, distribute the green electricity to the green electricity hydrogen and oxygen production system, and connect the excess green electricity to the grid or store it in the electrochemical energy storage system to release electricity to supplement the power supply when the wind and solar power generation power is insufficient. The green electricity hydrogen and oxygen production system is connected to the pure hydrogen simple power generation system. It is used to produce hydrogen and oxygen by electrolyzing water with green electricity, purifying, cooling, refining and compressing the hydrogen and oxygen, and then exporting the hydrogen to the hydrogen filling station and the pure hydrogen simple power generation system according to a preset ratio.

[0026] The pure hydrogen simple power generation system is connected to the waste heat heating system to generate electricity using hydrogen to meet the peak demand of insufficient wind and solar power generation, providing stable rotational inertia, while transferring the high-temperature flue gas waste heat discharged from the gas turbine to the waste heat heating system and waste heat cooling system.

[0027] The waste heat heating system is connected to the waste heat cooling system to recover waste heat and deliver it to the hydrogen production station heating system to meet the building heating needs in winter. When the waste heat is insufficient, the hot water storage tank is used to supplement the heating. When the hot water storage tank is depleted, the electric boiler is started to supplement the heating, while providing the heat base for the waste heat cooling system.

[0028] The waste heat cooling system is connected to the green electricity hydrogen and oxygen production system to utilize waste heat to generate cooling capacity, providing process cooling capacity for the green electricity hydrogen and oxygen production system, meeting the summer building cooling needs of the hydrogen production station, and starting electric chiller units to provide cooling in conjunction with waste heat when the waste heat cooling capacity is insufficient.

[0029] In this embodiment, the system comprises five core components: a wind and solar power generation and energy storage system, a green electricity hydrogen and oxygen production system, a pure hydrogen simple power generation system, a waste heat heating system, and a waste heat cooling system. These systems operate collaboratively through specific connections. The wind and solar power generation and energy storage system, as the core source of green electricity, integrates wind power generation devices, photovoltaic power generation devices, a wind and solar power booster station, and an electrochemical energy storage system. It is directly connected to the green electricity hydrogen and oxygen production system, converting wind and solar energy into clean green electricity (i.e., electricity generated from renewable energy sources with zero carbon emissions). This green electricity is prioritized for allocation to the green electricity hydrogen and oxygen production system to meet its operational needs. When green electricity production exceeds the system's requirements, excess green electricity is either fed into the grid via the wind and solar power booster station or stored in the electrochemical energy storage system. When wind and solar power generation power decreases and cannot meet the system's needs, the electrochemical energy storage system releases the stored electricity to supplement power supply, ensuring the stability of the green electricity supply. The green electricity hydrogen and oxygen production system is connected to a wind and solar power generation and energy storage system at one end to obtain green electricity, and to a pure hydrogen simple power generation system at the other end. It uses green electricity to produce hydrogen and oxygen through a water electrolysis device. The produced hydrogen and oxygen will pass through a purification device to remove impurities, a cooling device to reduce the temperature, a purification device to increase the purity, and a compression device to compress and store them. Then, according to a preset ratio, part of the hydrogen will be transported to a hydrogen filling station, and the remaining hydrogen will be transported to the pure hydrogen simple power generation system for its use. The pure hydrogen simple power generation system uses hydrogen supplied by the green electricity hydrogen-oxygen production system as fuel. Internally, it includes a hydrogen pressure regulating station, a combustion chamber, and a gas turbine (and other devices). Connected to a waste heat heating system, it generates electricity by driving the gas turbine through hydrogen combustion, thus addressing peak demand when wind and solar power generation is insufficient. It also provides stable rotational inertia for the system. Furthermore, the high-temperature flue gas waste heat discharged during gas turbine operation is simultaneously transferred to both the waste heat heating and waste heat cooling systems, achieving preliminary utilization of waste heat. The waste heat heating system receives waste heat from the pure hydrogen simple power generation system at one end and connects to the waste heat cooling system at the other. Its core components include a flue gas hot water heat exchanger, a hot water storage tank, and an electric boiler, which converts the recovered waste heat into thermal energy and supplies it to the hydrogen production station's heating system. The system meets the building's heating needs in winter. When the amount of waste heat recovered is insufficient, the hot water storage tank will be activated to release stored heat energy to supplement the heating. If the heat in the hot water storage tank is depleted, the electric boiler will be started to generate heat energy to continue supplementing the heating. At the same time, the waste heat heating system also provides the necessary heat base for the waste heat cooling system. The waste heat cooling system is connected to the waste heat heating system on one side to obtain heat, and to the green electricity hydrogen and oxygen production system on the other side. It mainly uses hot water type lithium bromide units to generate cooling capacity from waste heat. On the one hand, it provides the process cooling capacity required for the electrolysis, storage and other processes of the green electricity hydrogen and oxygen production system. On the other hand, it meets the building cooling needs of the hydrogen production station in summer. When the cooling capacity generated by waste heat cannot meet the demand, the electric refrigeration unit will be activated to provide cooling in conjunction with the waste heat, ensuring a sufficient supply of cooling capacity.The system architecture design can effectively mitigate the intermittency of wind and solar power generation, improve energy utilization efficiency, ensure the reliability of cooling and heating supply, and reduce dependence on grid peak shaving.

[0030] This application connects a wind and solar power generation and energy storage system with a green electricity hydrogen and oxygen production system, the green electricity hydrogen and oxygen production system with a pure hydrogen simple power generation system, the pure hydrogen simple power generation system with a waste heat heating system, the waste heat heating system with a waste heat cooling system, and the waste heat cooling system with the green electricity hydrogen and oxygen production system. By integrating the wind and solar power generation and energy storage system, the green electricity hydrogen and oxygen production system, the pure hydrogen simple power generation system, the waste heat heating system, and the waste heat cooling system, a deep coupling is achieved between green electricity supply and storage, hydrogen and oxygen production and distribution, pure hydrogen power generation peak shaving, waste heat recovery and utilization, and coordinated supplementation of cooling and heating. Therefore, it can solve the problems in related technologies caused by poor stability of single renewable energy sources, energy supply and demand mismatch, insufficient clean energy consumption, low comprehensive energy utilization efficiency, lack of reliability in cooling and heating, and poor economic efficiency. It achieves the technical effects of mitigating the intermittency of wind and solar power, improving the comprehensive energy utilization efficiency of the system, enhancing the reliability of cooling and heating, reducing the cost of terminal energy supply and grid peak shaving, expanding adaptability to multiple scenarios, and increasing commercial value.

[0031] Figure 2 This is a schematic diagram of a wind-solar-hydrogen-storage-gas integrated energy supply system further provided in the embodiments of this application, as shown below. Figure 2 As shown: In this embodiment of the application, the wind and solar power generation and energy storage system includes a wind power generation system (1), a photovoltaic power generation system (2), a wind and solar booster station (3), an electrochemical energy storage system (4), and a power grid (5). The output terminals of the wind power generation system (1) and the photovoltaic power generation system (2) are connected to the wind-solar booster station (3), and the wind-solar booster station (3) is connected to the electrochemical energy storage system (4), the power grid (5) and the hydrogen production station transformer group (6), respectively.

[0032] In this embodiment, the wind and solar power generation and energy storage system serves as the core green electricity production and control unit of the integrated energy supply system. Specifically, it includes five key components: wind power generation system (1), photovoltaic power generation system (2), wind and solar booster station (3), electrochemical energy storage system (4), and power grid (5). Each component achieves the generation, boosting, distribution, storage, and transmission of green electricity through a clear connection relationship. Among them, the wind power generation system (1) is an energy production device with wind turbine generator as its core. It can capture wind energy in nature with the help of blades and convert wind energy into low-voltage AC power through a transmission mechanism and generator. It is one of the important sources of green electricity in the system and is especially suitable for scenarios with abundant wind resources. The photovoltaic power generation system (2) consists of photovoltaic module array, inverter, combiner box, etc. It can directly convert solar energy into low-voltage DC power using the semiconductor photovoltaic effect, and then convert it into low-voltage AC power through the inverter. It forms a "wind-solar" complementarity with the wind power generation system (1) and can jointly improve the continuity of green electricity supply under different meteorological conditions. Since the initial voltage of the electricity generated by wind power and photovoltaic is low (usually several hundred volts), it cannot directly meet the power consumption and grid connection requirements of the subsequent hydrogen production equipment. Therefore, the output terminals of the wind power generation system (1) and the photovoltaic power generation system (2) are connected to the wind and solar booster station (3). The wind and solar booster station (3) serves as the core of voltage conversion and integrates booster transformers, switchgear, etc. It can boost the received low-voltage AC power to a voltage level that meets the medium and high voltage transmission standards (such as 10kV or 35kV), laying the foundation for the subsequent accurate distribution of green electricity. The wind-solar booster station (3) is further connected to the electrochemical energy storage system (4), the power grid (5), and the hydrogen production station transformer group (6), respectively. The connection with the hydrogen production station transformer group (6) is the key path for the targeted transmission of boosted green electricity to the green electricity hydrogen and oxygen production system. Through the secondary voltage regulation of the hydrogen production station transformer group (6), the appropriate voltage is provided for hydrogen production equipment such as electrolyzers. The connection with the electrochemical energy storage system (4) (composed of energy storage battery group, energy storage converter, and battery management system) can import the excess green electricity into the energy storage system for storage when the green electricity production exceeds the hydrogen production demand. When the wind and solar power output decreases and the green electricity supply is insufficient, the energy storage system releases electricity to supplement the wind-solar booster station (3) to ensure stable power supply. The connection with the power grid (5) is used to process the green electricity that is still surplus after the energy storage system is full and integrate it into the public power grid to achieve external transmission and consumption, thus avoiding energy waste. The system is designed to effectively integrate wind and solar resources, reduce wind and solar curtailment through voltage boosting and energy storage regulation, and provide a continuous and stable supply of green electricity for subsequent hydrogen production, thereby improving the stability and economy of energy utilization.

[0033] In this embodiment, the green electricity hydrogen and oxygen production system includes a hydrogen production station transformer group (6), a rectifier (7), an electrolyzer (8), an oxygen separation and storage unit, a hydrogen separation and storage unit, and a hydrogen filling station (19). The transformer group (6) of the hydrogen production station is connected to the power grid (5) and the rectifier (7) respectively. The rectifier (7) is connected to the electrolyzer (8) respectively. The electrolyzer (8) is connected to the oxygen separation and storage unit and the hydrogen separation and storage unit respectively.

[0034] In this embodiment, the green electricity hydrogen and oxygen production system is the core unit of the integrated energy supply system to realize the conversion of "green electricity to hydrogen energy". Specifically, it consists of a hydrogen production station transformer group (6), a rectifier (7), an electrolyzer (8), an oxygen separation and storage unit, a hydrogen separation and storage unit, and a hydrogen filling station (19). Through precise connection and coordination, each component completes the conversion, separation, storage, and partial hydrogen export of green electricity to hydrogen and oxygen. Among them, the hydrogen production station transformer group (6) serves as the "electricity control hub" of the system. On the one hand, it is indirectly connected to the wind and solar power generation and energy storage system (3) (green electricity access is realized through the previous system connection), and on the other hand, it is directly connected to the power grid (5) and the rectifier (7). Its core function is to regulate the voltage of the input electrical energy, reduce the medium and high voltage green electricity transmitted by the wind and solar power booster station to the voltage level suitable for the operation of subsequent equipment, and at the same time, when the output of wind and solar green electricity is insufficient and cannot meet the hydrogen production demand, it obtains electrical energy from the power grid (5) to supplement the power supply, ensuring the continuous and stable hydrogen production process and avoiding hydrogen production interruption due to green electricity fluctuations. The rectifier (7) is a key "energy conversion node" connecting the transformer group (6) of the hydrogen production station and the electrolyzer (8). Since the electrolyzer (8) relies on direct current for the water electrolysis reaction, while the output of the transformer group (6) of the hydrogen production station is alternating current, the rectifier (7) can convert the alternating current into direct current that meets the operating parameters of the electrolyzer (8). At the same time, it stabilizes the output current and voltage through the internal control module, providing a continuous and stable power input to the electrolyzer (8) to ensure the efficiency and safety of the electrolysis reaction. The electrolyzer (8) is the "core reaction device" for green electricity to produce hydrogen and oxygen. Its internal structure, including electrodes and electrolytes, decomposes the input pure water into hydrogen and oxygen under the action of direct current (i.e., water electrolysis reaction). It is the core component for realizing the conversion of "electrical energy to chemical energy". Its output end is connected to the oxygen separation and storage unit and the hydrogen separation and storage unit respectively, so that the hydrogen and oxygen mixed gas generated by the reaction can be introduced into the corresponding units for subsequent processing. The oxygen separation and storage unit and the hydrogen separation and storage unit, as "hydrogen and oxygen purification and storage modules", respectively receive oxygen and hydrogen output from the electrolyzer (8). Through internally integrated functions such as separation, washing, cooling, and purification, they remove moisture and impurities from the gas, improve the gas purity, and then store the purified oxygen and hydrogen in dedicated storage tanks to achieve safe storage and backup of hydrogen and oxygen. The hydrogen filling station (19) is connected to the hydrogen separation and storage unit and can output a portion of the purified and stored hydrogen at a preset pressure and flow rate for use by external hydrogen energy users, expanding the application scenarios and commercial value of hydrogen energy. Through the coordinated operation of each component, this system can efficiently utilize green electricity to convert into hydrogen energy, ensure operational stability through grid power supplementation, and simultaneously achieve effective separation and storage of hydrogen and oxygen and output of hydrogen, laying the foundation for subsequent pure hydrogen power generation and hydrogen energy utilization, and improving the green electricity consumption rate and the flexibility of hydrogen energy utilization.

[0035] In this embodiment of the application, the oxygen separation and storage unit and the hydrogen separation and storage unit include: The oxygen separation and storage unit includes an oxygen separator (9), an oxygen scrubber (10), an oxygen cooler (11), and an oxygen storage tank (12) connected in sequence. The hydrogen separation and storage unit includes a hydrogen separator (13), a hydrogen scrubber (14), a hydrogen cooler (15), a hydrogen purification system (16), a hydrogen compression system (17), and a hydrogen storage tank (18) connected in sequence. The hydrogen storage tank (18) is connected to the hydrogen filling station (19) and the hydrogen pressure regulating station (20), respectively.

[0036] In this embodiment, the oxygen separation and storage unit and the hydrogen separation and storage unit are the core sub-modules of the green electricity hydrogen and oxygen production system, which realize the precise separation, deep purification, temperature control and safe storage of hydrogen and oxygen gas. The two together receive the hydrogen-oxygen mixed gas output from the electrolyzer (8) and complete the gas processing through sequentially connected functional components, providing qualified media for subsequent hydrogen energy utilization and oxygen storage. Among them, the oxygen separation and storage unit is composed of an oxygen separator (9), an oxygen scrubber (10), an oxygen cooler (11) and an oxygen storage tank (12) connected in sequence according to the gas processing flow: the oxygen separator (9) is the first-end processing component, and its core function is to receive the hydrogen-oxygen mixed gas generated by the electrolyzer (8), and to initially separate the oxygen and hydrogen in the mixed gas through physical separation technology (such as membrane separation or gravity separation) to ensure the initial purification of oxygen and lay the foundation for subsequent processing; the separated oxygen enters the oxygen scrubber (10), which is filled with special scrubbing medium or circulated with clean scrubbing water, which can effectively remove the hydrogen and oxygen. To remove residual trace electrolytes, water vapor, and fine impurity particles from the oxygen, and to prevent impurities from entering subsequent processes with the oxygen and affecting equipment life or gas safety, the washed oxygen then enters the oxygen cooler (11), where the oxygen temperature is reduced to a suitable storage temperature range through a heat exchange device (such as a shell-and-tube heat exchanger). The cooling process can prevent high-temperature oxygen from entering the oxygen storage tank (12) and causing pressure abnormalities or safety hazards. Finally, the treated oxygen is transported to the oxygen storage tank (12), which is a closed container that meets pressure vessel standards and has pressure monitoring and safety relief functions, enabling long-term stable storage of oxygen.

[0037] The hydrogen separation and storage unit is designed with a more refined processing flow to meet the higher purity and storage requirements of hydrogen. It consists of a hydrogen separator (13), a hydrogen scrubber (14), a hydrogen cooler (15), a hydrogen purification system (16), a hydrogen compression system (17), and a hydrogen storage tank (18) connected in sequence. The hydrogen separator (13) works synchronously with the oxygen separator (9) to receive the hydrogen-oxygen mixture from the electrolyzer (8). The hydrogen is separated separately using a separation technology that matches the oxygen separator to ensure the initial collection of hydrogen. The separated hydrogen first enters the hydrogen scrubber (14), which removes water vapor, trace electrolytes, and mechanical impurities carried in the hydrogen through a purification principle similar to that of the oxygen scrubber, thus avoiding blockage or contamination of subsequent purification equipment. The washed hydrogen... The gas enters the hydrogen cooler (15) to reduce the temperature to a range suitable for the purification and compression processes, ensuring the efficiency and stability of subsequent processing steps. The cooled hydrogen enters the hydrogen purification system (16), which uses high-precision purification technology to further remove trace amounts of oxygen, nitrogen, carbon monoxide and other impurities remaining in the hydrogen. The purified high-purity hydrogen then enters the hydrogen compression system (17), where a multi-stage compressor increases the hydrogen pressure to a high-pressure state. High-pressure storage can significantly increase the hydrogen storage density, reduce the volume occupied by the hydrogen storage tank (18), and improve the system space utilization. Finally, the high-pressure high-purity hydrogen is transported to the hydrogen storage tank (18), which is a dedicated high-pressure hydrogen energy storage container with corrosion resistance, high pressure resistance and safety monitoring functions, enabling safe storage of hydrogen. In addition, the hydrogen storage tank (18) is connected to the hydrogen filling station (19) and the hydrogen pressure regulating station (20) respectively. It can deliver some hydrogen to the hydrogen filling station (19) for use by external hydrogen energy users (such as hydrogen energy vehicles and industrial equipment), and deliver hydrogen to the hydrogen pressure regulating station (20) to provide fuel for the pure hydrogen simple power generation system, realizing the multi-scenario utilization of hydrogen energy.

[0038] This design ensures the high purity and storage safety of hydrogen and oxygen gases through a modular and sequential hydrogen and oxygen processing and storage process. It not only meets the fuel purity requirements for pure hydrogen power generation, but also expands the pathway for hydrogen energy export, while avoiding damage to equipment from impurities. This effectively improves the reliability of the green electricity hydrogen and oxygen production system and the flexibility of hydrogen energy utilization.

[0039] In this embodiment of the application, the pure hydrogen simple power generation system includes a hydrogen pressure regulating station (20), an air compressor (21), a combustion chamber (22), a gas turbine (23), and a flue gas hot water heat exchanger (24). The hydrogen pressure regulating station (20) is connected to the combustion chamber (22), which is connected to the air compressor (21) and the gas turbine (23) respectively. The gas turbine (23) is connected to the flue gas hot water heat exchanger (24).

[0040] In this embodiment, the pure hydrogen simple power generation system is the core unit of the integrated energy supply system to cope with the fluctuations of wind and solar power generation and realize the efficient conversion of hydrogen energy into electrical energy. Specifically, it consists of a hydrogen pressure regulating station (20), an air compressor (21), a combustion chamber (22), a gas turbine (23), and a flue gas hot water heat exchanger (24). Each component works together in sequence according to the energy conversion process to complete the conversion of "hydrogen energy-thermal energy-mechanical energy-electric energy" and realize the recovery of waste heat at the same time. Among them, the hydrogen pressure regulating station (20) serves as the "pressure regulation hub" for hydrogen energy input. Its input end is connected to the hydrogen storage tank (18) of the green electricity hydrogen and oxygen production system, and receives high-pressure hydrogen from the hydrogen storage tank (18). Since the hydrogen storage tank (18) is for high-pressure storage, and the combustion chamber (22) requires medium and low-pressure hydrogen for combustion, the hydrogen pressure regulating station (20) stabilizes the high-pressure hydrogen down to the pressure level that meets the safe combustion requirements of the combustion chamber (22) through the internal pressure regulating valve group and pressure monitoring module. At the same time, it accurately controls the hydrogen delivery flow rate to ensure the stability and safety of the subsequent combustion process and avoid incomplete combustion or equipment damage due to pressure fluctuations.

[0041] The air compressor (21), as a combustion-supporting gas supply component, has the core function of drawing in air from the outside, compressing the air to a certain pressure (matching the pressure after hydrogen pressure regulation) through multi-stage compression technology, and then delivering the compressed air to the combustion chamber (22). The compressed air not only provides sufficient oxygen for hydrogen combustion, but also increases the oxygen concentration relatively through pressure increase, promoting uniform mixing of hydrogen and air, greatly improving combustion efficiency, and avoiding energy waste caused by insufficient hydrogen combustion due to insufficient oxygen. The combustion chamber (22) is the "core reaction site" for the conversion of hydrogen energy into thermal energy. It is connected to the hydrogen pressure regulating station (20) and the air compressor (21) respectively. It can accurately receive the pressure-regulated hydrogen and compressed air, and achieve uniform mixing of the two according to the optimal combustion ratio through the internal mixing device. Then, the mixed gas is ignited by the ignition device to generate high-temperature and high-pressure gas, which provides sufficient power source for the subsequent driving gas turbine (23).

[0042] As the core component for the conversion of thermal energy to mechanical energy, the gas turbine (23) is connected to the combustion chamber (22) at its input end. It can receive the high-temperature and high-pressure gas discharged from the combustion chamber (22). The gas impacts the turbine impeller and rotates at high speed, thereby driving the coaxially connected generator to rotate and converting mechanical energy into electrical energy. This electrical energy can directly supplement the system to meet the peak demand when the wind and solar power generation is insufficient and ensure the stability of the system power supply. On the other hand, it can provide the system with a stable moment of inertia and reduce the frequency fluctuation of the power grid caused by the fluctuation of wind and solar power output. At the same time, the output end of the gas turbine (23) is connected to the flue gas hot water heat exchanger (24). The high-temperature flue gas discharged during its operation carries a large amount of waste heat, which needs to be recovered and utilized through the flue gas hot water heat exchanger (24).

[0043] The flue gas hot water heat exchanger (24) serves as a "key carrier" for waste heat recovery. It is equipped with heat exchange tube bundles, which can exchange heat between the high-temperature flue gas discharged from the gas turbine (23) and the circulating water in the heat exchanger. After absorbing the waste heat of the flue gas, the temperature of the circulating water increases. On the one hand, it provides high-temperature hot water for the subsequent waste heat heating system to meet the building heating demand in winter. On the other hand, it provides a heat source for the hot water type lithium bromide unit of the waste heat cooling system to support the preparation of cooling capacity. The temperature of the flue gas after heat exchange is greatly reduced and then discharged through the chimney, effectively reducing heat waste.

[0044] Through precise coordination of its components, the system can not only achieve stable power generation using hydrogen energy and mitigate the intermittency of wind and solar power generation, but also efficiently recover waste heat from combustion, providing an energy foundation for subsequent cooling and heating. This significantly improves energy utilization efficiency and system operational stability, while reducing reliance on external power grid peak shaving.

[0045] In this embodiment, the waste heat heating system includes a flue gas hot water heat exchanger (24), a heating pump set, a heating water distributor (F-1), a hydrogen production station heating system (25), a hot water storage tank (27), and an electric boiler (26). The flue gas hot water heat exchanger (24) is connected to the hot water type lithium bromide unit (28) via electric valve a, and is also connected to the heating water supply pump 1 (P-1) and the heating return water pump 1 (P-3) respectively; the heating water supply pump 1 (P-1) is connected to the heating water distributor (F-1), the heating water distributor (F-1) is connected to the hydrogen production station heating system (25) via electric valve b, and is connected to the hot water storage tank (27) via electric valve c; the hot water storage tank (27) is connected to the hydrogen production station heating system (25) via electric valve d and heating water supply pump 2 (P-2); the hydrogen production station heating system (25) is connected to the electric boiler (26) via heating water supply pump 3 (P-4) and electric valve e, and the electric boiler (26) is connected to the heating return water pump 2 (P-5).

[0046] In this embodiment, the waste heat heating system is the core unit of the integrated energy supply system for recovering waste heat from the pure hydrogen simple power generation system and ensuring stable heating for the hydrogen production station in winter. Specifically, it includes a flue gas hot water heat exchanger (24), a heating pump group (including heating water supply pump 1 (P-1), heating water supply pump 2 (P-2), heating water supply pump 3 (P-4), heating return water pump 1 (P-3), heating return water pump 2 (P-5)), a heating water distributor (F-1), a hydrogen production station heating system (25), a hot water storage tank (27), and an electric boiler (26). The on / off control and flow regulation between the components are realized through electric valves a, b, c, d, and e, thus constructing a multi-level heating guarantee process of "waste heat recovery - direct heating - heat storage for backup - emergency supplementation". Among them, the flue gas hot water heat exchanger (24) is the core carrier of waste heat recovery. One end of it receives the high-temperature flue gas discharged from the gas turbine (23) in the pure hydrogen simple power generation system. The waste heat of the flue gas is transferred to the circulating water through the internal heat exchange tube bundle, and the circulating water is heated into high-temperature hot water. On the one hand, the heat exchanger is connected to the hot water type lithium bromide unit (28) through electric valve a to provide heat source support for the waste heat cooling system. On the other hand, it forms a cycle with the heating water supply pump 1 (P-1) and the heating water return pump 1 (P-3) respectively. The heating water supply pump 1 (P-1) is responsible for transporting the heated high-temperature hot water to the subsequent distribution link, while the heating water return pump 1 (P-3) sends the low-temperature hot water returned from the hydrogen production station heating system (25) back to the heat exchanger to absorb heat again, thus completing the basic heating cycle. The heating water distributor (F-1) serves as the hot water distribution hub. After receiving the high-temperature hot water delivered by the heating water pump 1 (P-1), it directly introduces the hot water into the hydrogen production station heating system (25) through the electric valve b to meet the winter heating needs of the hydrogen production station building. When the hot water generated by the waste heat exceeds the immediate heating demand, the system opens the electric valve c to introduce the excess high-temperature hot water into the hot water storage tank (27). The hot water storage tank is a pressure vessel with an insulation layer, which can efficiently store excess heat and avoid waste of waste heat, serving as a backup source for heating. When the amount of waste heat recovered from the flue gas decreases and cannot meet the heating demand, the system first opens the electric valve d and starts the heating water supply pump 2 (P-2) to transport the high-temperature hot water stored in the hot water storage tank (27) to the hydrogen production station heating system (25) to achieve the first-level supplementary heating. If the heat in the hot water storage tank (27) is exhausted, the system starts the electric boiler (26) and transports the hot water heated by the electric boiler to the hydrogen production station heating system (25) through the electric valve e via the heating water supply pump 3 (P-4). At the same time, the heating return water pump 2 (P-5) sends the low-temperature return water back to the electric boiler for circulation heating to form emergency supplementary heating. Through the multi-level heating design, the system can not only efficiently recover waste heat from the flue gas to improve energy utilization, but also ensure the continuity of heating through heat storage and electric boiler, reduce dependence on traditional gas heating, and reduce heating costs.

[0047] In this embodiment, the waste heat cooling system includes a hot water type lithium bromide chiller (28), an electric chiller (29), a chilled water supply and return pump set, a chilled water supply manifold (H-1), a chilled water supply distributor (F-2), a chilled water return distributor (F-3), a cooling tower (30), and a circulating cooling water pump set. The hot water type lithium bromide unit (28) is connected to the chilled water supply pump 1 (P-6) and the chilled water return diverter (F-3) respectively; the chilled water supply pump 1 (P-6) is connected to the chilled water supply manifold (H-1), and the chilled water supply manifold (H-1) is connected to the chilled water supply pump 2 (P-7) and the electric refrigeration unit (29) via the electric valve f; the chilled water supply diverter (F-2) is connected to the oxygen cooler (11) and the hydrogen cooler (12) respectively. 5) Hydrogen purification system (16), hydrogen compression system (17) and hydrogen production station cooling system (31); the hydrogen production station cooling system (31) is connected to the chilled water return pump 1 (P-8) via the chilled water return manifold (H-2), and the chilled water return pump 1 (P-8) is connected to the chilled water return distributor (F-3); the electric refrigeration unit (29) is connected to the cooling tower (30) via the electric valve i and the circulating cooling water pump group (P-10, P-11).

[0048] In this embodiment, the waste heat cooling system is the core unit of the integrated energy supply system, which relies on the waste heat from pure hydrogen power generation to generate cooling capacity and ensure the cooling needs of the hydrogen production station process and the cooling of buildings in summer. Specifically, it includes a hot water type lithium bromide unit (28), an electric chiller unit (29), a chilled water supply and return pump group (including chilled water supply pump 1 (P-6), chilled water supply pump 2 (P-7), chilled water return pump 1 (P-8)), a chilled water supply manifold (H-1), a chilled water supply distributor (F-2), a chilled water return distributor (F-3), a cooling tower (30), and a circulating cooling water pump group (P-10, P-11). The system uses electric valves f and i to control the on / off flow of cooling capacity generation and heat dissipation, thus constructing a dual cooling guarantee system of "waste heat cooling as the main method and electric cooling as the auxiliary method". Among them, the hot water type lithium bromide unit (28) is the core device for converting waste heat into cooling capacity. It uses the high-temperature hot water delivered by the flue gas hot water heat exchanger (24) in the waste heat heating system as the driving heat source. It does not require a large amount of electrical energy. It prepares low-temperature chilled water through the heat absorption and condensation phase change process of lithium bromide solution. One end of the unit is connected to the chilled water supply pump 1 (P-6), which can transport the prepared low-temperature chilled water to the chilled water supply manifold (H-1). The other end is connected to the chilled water return diverter (F-3), which receives the chilled water whose temperature rises after use and performs cooling treatment again to achieve recycling. The chilled water supply manifold (H-1) serves as the central hub for cooling capacity distribution. It receives the waste heat from the chilled water supply pump 1 and connects the chilled water supply pump 2 (P-7) to the electric chiller unit (29) via an electric valve f. When the cooling capacity generated by the hot water type lithium bromide unit cannot meet the total cooling demand of the hydrogen production station, the electric chiller unit (29) is activated and replenishes the cooling capacity generated by the chilled water supply pump 2 to the supply manifold, ensuring sufficient cooling capacity supply. The chilled water supply diverter (F-2) receives the low-temperature chilled water from the supply manifold and accurately distributes it to the oxygen cooler (11), hydrogen cooler (15), hydrogen purification system (16), and hydrogen compression system (17). This provides the necessary process cooling capacity for the cooling, purification, and compression processes of hydrogen and oxygen in the green electricity hydrogen and oxygen production system. At the same time, it delivers cooling capacity to the hydrogen production station cooling system (31) to meet the cooling demand of the hydrogen production station building in summer. The high-temperature chilled water from the hydrogen production station cooling system (31) and various process equipment will be collected by the chilled water return manifold (H-2), and then transported by the chilled water return pump 1 (P-8) to the chilled water return diverter (F-3), and finally returned to the hot water type lithium bromide unit to cool down again, forming a complete chilled water cycle.In addition, the electric chiller unit (29) generates heat during operation, which needs to be connected to the cooling tower (30) via electric valve i and circulating cooling water pump set (P-10, P-11): the circulating cooling water pump (P-10) delivers the low-temperature cooling water in the cooling tower to the electric chiller unit. After absorbing heat, the cooling water with increased temperature is sent back to the cooling tower via the circulating cooling water pump (P-11). After being cooled down by natural or forced heat exchange with the air, it re-enters the circulation, ensuring the stable operation of the electric chiller unit. This system design reduces cooling energy consumption through waste heat cooling and uses electric cooling as a backup, effectively ensuring the reliability of the hydrogen production station process and building cooling, while improving the overall energy utilization efficiency.

[0049] Accordingly, embodiments of this application provide an operation method for a wind-solar-hydrogen-storage-gas integrated energy supply system, such as... Figure 3 As shown, the method includes: Step 301: Based on the real-time matching status between wind and solar power generation and hydrogen production power at the hydrogen production station, dynamically switch between pure hydrogen power generation operation mode and pure hydrogen non-power generation operation mode.

[0050] In some embodiments, when the wind and solar power generation is less than the hydrogen production power of the hydrogen production station, the electrochemical energy storage is activated first, and the stored electricity is connected to the grid through the wind and solar booster station. At the same time, the pure hydrogen simple power generation system is turned on for peak shaving. At this time, the wind and solar power generation and energy storage system, the green electricity hydrogen and oxygen production system, and the pure hydrogen simple power generation system are all in operation. When the power generated by wind and solar power (generated by wind power system (1) and photovoltaic power system (2)) is less than the hydrogen production power of the hydrogen production station, the system will prioritize starting the electrochemical energy storage system (4). The system releases the previously stored electrical energy, which, together with the electrical energy output by the current wind and solar power system, flows into the wind and solar booster station (3). After the wind and solar booster station (3) regulates the voltage of these two parts of electrical energy, one part is directed to the transformer group (6) of the hydrogen production station to provide stable electrical energy for the green electricity hydrogen and oxygen production system to meet the hydrogen production demand. The other part of the excess electrical energy is connected to the power grid (5) through the wind and solar booster station (3) to avoid redundant waste of electrical energy. At the same time, the system starts up the pure hydrogen simple power generation system to achieve peak shaving: In the pure hydrogen simple power generation system, the hydrogen pressure regulating station (20) obtains hydrogen from the hydrogen storage tank (18), and after the hydrogen pressure is reduced to the pressure level suitable for combustion in the combustion chamber (22) by the pressure regulating valve group, it is delivered to the combustion chamber (22); the air compressor (21) simultaneously draws in air from the outside and compresses it to the corresponding pressure, mixes it with the pressure-regulated hydrogen in the combustion chamber (22) according to the optimal combustion ratio and ignites it. The high temperature and high pressure gas generated drives the gas turbine (23) to rotate at high speed, which in turn drives the generator (coaxial with the gas turbine) to generate electricity. This part of the electricity is supplemented to the wind and solar booster station (3) or directly connected to the system power supply circuit to make up for the gap between the wind and solar power generation power and the hydrogen production power, and ensure the stability of the hydrogen production power of the hydrogen production station. In this operating state, the wind and solar power generation and energy storage system continuously provides basic power through the "wind and solar power generation + energy storage supplement" mode. The green electricity hydrogen and oxygen production system operates normally with the help of stable power. The transformer group (6) of the hydrogen production station transmits the received power to the rectifier (7) after voltage regulation. The rectifier (7) converts the AC power into DC power to supply the electrolyzer (8). The electrolyzer (8) electrolyzes water to produce a hydrogen-oxygen mixture. Then, the hydrogen and oxygen are separated, washed, cooled, purified and stored by the oxygen separation and storage unit and the hydrogen separation and storage unit to ensure the continuous supply of hydrogen energy. The pure hydrogen simple power generation system uses hydrogen energy power generation for precise peak regulation. The three work together to ensure that the hydrogen production power of the hydrogen production station is uninterrupted and effectively suppresses the intermittent fluctuations of wind and solar power generation, reducing the dependence on grid peak regulation and improving the stability and autonomy of the system's power supply.

[0051] When the power output of wind and solar power generation exceeds the hydrogen production capacity of the hydrogen production station, electrochemical energy storage is activated first. Excess electricity is fed into the grid through the wind and solar booster station. At this time, the wind and solar power generation and energy storage system, as well as the green electricity hydrogen and oxygen production system, are in operation, while the pure hydrogen simple power generation system is not in operation.

[0052] When the power of wind and solar power generation is greater than the power of hydrogen production at the hydrogen production station, the system will prioritize the activation of the electrochemical energy storage system (4) to efficiently absorb the surplus power while ensuring the stable operation of the core hydrogen production process. At this time, the electricity generated by the wind power generation system (1) and the photovoltaic power generation system (2) is first collected to the wind-solar booster station (3). After the wind-solar booster station (3) adjusts the electricity to the appropriate voltage level through the internal voltage regulating device, a part of it is directed to the transformer group (6) of the hydrogen production station to provide continuous and stable electricity for the green electricity hydrogen and oxygen production system, and to meet the power requirements of the hydrogen production station at full load or stable hydrogen production. The surplus electricity that exceeds the hydrogen production requirements is preferentially introduced into the electrochemical energy storage system (4). This system consists of an energy storage battery pack, an energy storage converter and a battery management module. It can store the surplus electricity in the form of chemical energy to avoid the waste of "wind and solar curtailment" caused by the inability to consume it immediately. At the same time, it reserves energy to supplement the power supply when the wind and solar power generation power decreases. If the electrochemical energy storage system (4) has reached the storage limit, the remaining surplus electricity will continue to be connected to the grid (5) through the wind-solar booster station (3) to realize the external transmission and consumption of electricity and further improve the utilization rate of renewable energy.

[0053] Under this operating condition, the green electricity hydrogen and oxygen production system operates stably throughout the entire process: the transformer group (6) of the hydrogen production station will adjust the voltage of the received electrical energy to the voltage of the matching rectifier (7) and then send it to the rectifier (7); the rectifier (7) will convert the AC power into the DC power required by the electrolyzer (8) to drive the electrolyzer (8) to carry out the electrolysis of water reaction and generate a hydrogen-oxygen mixture; then, the mixture enters the oxygen separation and storage unit and the hydrogen separation and storage unit respectively. The oxygen is separated by the oxygen separator (9), purified by the oxygen scrubber (10), and cooled by the oxygen cooler (11) and then stored in the oxygen storage tank (12). The hydrogen is separated by the hydrogen separator (13), purified by the hydrogen scrubber (14), cooled by the hydrogen cooler (15), purified by the hydrogen purification system (16), and compressed by the hydrogen compression system (17) and then stored in the hydrogen storage tank (18). Some of the hydrogen can also be transported to the hydrogen filling station (19) for external transmission according to demand, so as to realize the storage and value-added of hydrogen energy.

[0054] Meanwhile, the pure hydrogen simple power generation system is in a shutdown state. Its internal hydrogen pressure regulating station (20) does not draw hydrogen from the hydrogen storage tank (18), and the air compressor (21), combustion chamber (22), gas turbine (23), and flue gas hot water heat exchanger (24) are all shut down. Since the current wind and solar power generation capacity is sufficient, there is no need to supplement the power supply or peak shaving through hydrogen power generation, which can avoid unnecessary hydrogen consumption and reduce the system's operating energy consumption. This operating mode can maximize the utilization of surplus wind and solar power, reduce energy waste, continuously store hydrogen energy, and improve the system's energy regulation flexibility through electrochemical energy storage, taking into account both economy and reliability.

[0055] Step 302: Based on the pure hydrogen power generation operation mode or the pure hydrogen non-power generation operation mode, control the above-mentioned waste heat heating system and the above-mentioned waste heat cooling system to operate different preset cooling or heating schemes according to the cooling season, heating season and transition season.

[0056] In some embodiments, when the operating mode is pure hydrogen power generation mode, during the cooling season, a preset cooling scheme is invoked based on the comparison between the sum of the process cooling load and the cooling load of the hydrogen production station's cooling system and the cooling load of the hot water lithium bromide unit; during the heating season, a preset heating scheme is invoked based on the comparison between the heat load of the hydrogen production station's heating system and the heat load of the flue gas hot water lithium bromide unit; during the transition season, a preset transition scheme is invoked based on the comparison between the process cooling load and the cooling load of the hot water lithium bromide unit. In this embodiment, during the cooling season, when the sum of the process cooling load Q1 and the cooling load Q2 of the hydrogen production station cooling system (Q1 + Q2) is less than the cooling load Q3 of the hot water type lithium bromide unit, only the hot water type lithium bromide unit is used for cooling; when Q1 + Q2 > the cooling load Q3 of the hot water type lithium bromide unit, the electric chiller unit is started for cooling; that is, the wind and solar power generation system and the photovoltaic power generation system generate electricity, the electrochemical energy storage system is in charging mode, the booster station transmits excess electricity to the grid, all electrolyzers are running, hydrogen is produced and stored in a hydrogen storage tank after passing through a hydrogen separator, hydrogen scrubber, hydrogen cooler, hydrogen purification system, and hydrogen compression system, and oxygen is produced and passed through an oxygen separator and oxygen... The gas scrubber and oxygen cooler are stored in the oxygen storage tank. The hydrogen pressure regulating station, air compressor, combustion chamber, gas turbine, flue gas hot water heat exchanger, and hot water lithium bromide unit are in operation. When Q1+Q2 < the cooling load Q3 of the flue gas hot water lithium bromide unit, only electric valves a and g are opened to start the chilled water supply pump 1 and chilled water return pump 1, using the flue gas hot water lithium bromide unit for cooling. When Q1+Q2 > the cooling load Q3 of the flue gas hot water lithium bromide unit, electric valves f, h, and i are opened to start the chilled water supply pump 2, chilled water return pump 2, circulating cooling water supply pump, circulating cooling water return pump, and electric refrigeration unit for cooling.

[0057] During the heating season, the process cooling load is supplied by electric refrigeration units. When the heat load of the hydrogen production station heating system Qr is less than the heat load of the flue gas hot water lithium bromide unit Qyr, the flue gas hot water lithium bromide unit is used for heating, and the excess heat is stored in the hot water storage tank. When the heat load of the hydrogen production station heating system Qr is greater than the heat load of the flue gas hot water lithium bromide unit Qyr, the flue gas hot water lithium bromide unit and the hot water storage tank are used for heating simultaneously. When the heat in the hot water storage tank is exhausted, the electric boiler is turned on to supplement the heating. The system generates electricity from wind and solar power systems and photovoltaic power systems. The electrochemical energy storage system is in charging mode. The booster station transmits excess electricity to the grid. All electrolyzers are operating. Hydrogen is produced and stored in a hydrogen storage tank after passing through a hydrogen separator, hydrogen scrubber, hydrogen cooler, hydrogen purification system, and hydrogen compression system. Oxygen is produced and stored in an oxygen storage tank after passing through an oxygen separator, oxygen scrubber, and oxygen cooler. The hydrogen pressure regulating station, air compressor, combustion chamber, gas turbine, flue gas hot water heat exchanger, and hot water lithium bromide unit are operating. Electric valves f, h, and i are opened, and chilled water supply pump 2, chilled water return pump 1, and chilled water return pump are started. Pump 2, the circulating cooling water supply pump, the circulating cooling water return pump, and the electric refrigeration unit provide cooling for the process cooling load. When the heat load Qr of the hydrogen production station heating system is less than the heat load Qyr of the flue gas hot water lithium bromide unit, electric valves b and c are opened to start heating water supply pump 1 and heating return pump 1. When the heat load Qr of the hydrogen production station heating system is greater than the heat load Qyr of the flue gas hot water lithium bromide unit, electric valve c is closed and electric valve d is opened to start heating water supply pump 2. When the heat in the hot water storage tank is depleted, electric valve d is closed and electric valve e is opened to start heating water supply pump 3, heating return pump 2, and the electric boiler to provide heat for the hydrogen production station heating system.

[0058] During the transition season, priority is given to using the flue gas hot water lithium bromide unit's cooling load to supply cooling for the process cooling load. When the process cooling load Q1 < the hot water type lithium bromide unit's cooling load Q3, only the hot water type lithium bromide unit is used for cooling; when Q1 > the hot water type lithium bromide unit's cooling load Q3, the electric chiller unit is started for cooling; that is, the wind and solar power generation system and the photovoltaic power generation system generate electricity, the electrochemical energy storage system is in charging mode, the booster station transmits excess electricity to the grid, all electrolyzers are running, hydrogen is produced and stored in hydrogen storage tanks after passing through a hydrogen separator, hydrogen scrubber, hydrogen cooler, hydrogen purification system, and hydrogen compression system, and oxygen is produced and stored in oxygen separator, oxygen scrubber, and oxygen cooler. In the oxygen storage tank, the hydrogen pressure regulating station, air compressor, combustion chamber, gas turbine, flue gas hot water heat exchanger, and hot water lithium bromide unit are in operation. When Q1 < the cooling load Q3 of the flue gas hot water lithium bromide unit, only electric valve a is opened to start the chilled water supply pump 1 and chilled water return pump 1, using the flue gas hot water lithium bromide unit for cooling. When Q1 > the cooling load Q3 of the flue gas hot water lithium bromide unit, electric valves f, h, and i are opened to start the chilled water supply pump 2, chilled water return pump 2, circulating cooling water supply pump, circulating cooling water return pump, and electric refrigeration unit for cooling.

[0059] In the pure hydrogen power generation operation mode, when wind and solar power generation is insufficient, a dual guarantee mechanism of "electrochemical energy storage supplementation + pure hydrogen simple power generation peak shaving" can effectively smooth out the intermittent fluctuations of wind and solar power generation, preventing the hydrogen production power of the hydrogen production station from being interrupted due to a sudden drop in wind and solar output. At the same time, it can rely on the full-load operation of the electrolyzer to continuously produce and store hydrogen and oxygen, reserving reserves for subsequent energy dispatch and hydrogen energy utilization. Meanwhile, the electrochemical energy storage and pure hydrogen power generation work together to reduce dependence on grid peak shaving, ensuring the overall power supply stability of the system. In addition, in this mode, the waste heat heating and waste heat cooling systems will operate according to seasonal differences. During the cooling season and transitional season, the waste heat from the flue gas generated by pure hydrogen power generation will be used first to drive the hot water type lithium bromide unit for cooling. Only when the waste heat cooling capacity cannot meet the total cooling load of the process and buildings will the electric chiller unit be started to supplement. During the heating season, the waste heat from the flue gas will be used first for cooling. Excess heat is stored in a hot water storage tank. When insufficient heat is generated, the hot water storage tank or an electric boiler is activated as a backup, maximizing the recovery and utilization of the high-temperature flue gas waste heat discharged from the gas turbine. This achieves cascaded energy utilization and significantly improves the overall energy efficiency of the system. In addition, the synergistic operation of electrochemical energy storage and pure hydrogen power generation can reduce the cost of purchasing electricity from the grid. Waste heat can replace part of the energy consumption of electric cooling and gas heating, reducing the cost of end-user energy. The hydrogen and oxygen produced by the electrolyzer at full load can not only meet the pure hydrogen power generation needs within the system, but can also be stored for backup or exported to expand commercial value. At the same time, through precise control of equipment such as electric valves and supply and return water pumps, the cooling and heating equipment can be started and stopped as needed, avoiding redundant energy consumption. This further optimizes the system's economy and energy supply reliability. Overall, it achieves multiple benefits such as smoothing out wind and solar intermittency, efficient energy utilization, continuous and stable energy supply, and optimized economic costs.

[0060] When the operating mode is pure hydrogen without power generation, during the cooling season, the electric chiller unit is started to provide cooling for the process cooling load and the cooling load of the hydrogen production station cooling system; during the heating season, the hot water storage tank is used for heating first. When the hot water in the storage tank is used up, the electric boiler is started for heating, while the process cooling load is provided by the electric chiller unit; during the transition season, the electric chiller unit is started to provide cooling for the process cooling load.

[0061] In this embodiment, during the cooling season, the electric chiller unit is started to supply cooling for the process cooling load Q1 and the cooling load Q2 of the hydrogen production station cooling system. Specifically, the wind and solar power generation system and the photovoltaic power generation system generate electricity, the electrochemical energy storage system operates in discharge mode, the electrolyzer is partially operational, hydrogen is produced and stored in a hydrogen storage tank after passing through a hydrogen separator, hydrogen scrubber, hydrogen cooler, hydrogen purification system, and hydrogen compression system, and oxygen is produced and stored in an oxygen storage tank after passing through an oxygen separator, oxygen scrubber, and oxygen cooler. The hydrogen pressure regulating station, air compressor, combustion chamber, gas turbine, flue gas hot water heat exchanger, and hot water type lithium bromide unit are not operating; only electric valves g, f, h, and i are opened to start the chilled water supply pump 2, chilled water return pump 1, chilled water return pump 2, circulating cooling water supply pump, circulating cooling water return pump, and the electric chiller unit for cooling.

[0062] During the heating season, hot water storage tanks are used for heating first. When the hot water in the storage tanks is depleted, electric boilers are started for heating. Simultaneously, electric chillers are used for process cooling loads. Specifically, the wind and solar power systems generate electricity, the electrochemical energy storage system operates in discharge mode, the electrolyzer is partially operational, hydrogen is produced and stored in a hydrogen storage tank after passing through a hydrogen separator, hydrogen scrubber, hydrogen cooler, hydrogen purification system, and hydrogen compression system, and oxygen is produced and stored in an oxygen storage tank after passing through an oxygen separator, oxygen scrubber, and oxygen cooler. The hydrogen pressure regulating station, air compressor, combustion chamber, gas turbine, flue gas hot water heat exchanger, and hot water lithium bromide unit are not operational. First, open electric valves c, d, and d. Electric valves g, f, h, and i are activated to start heating water supply pump 2, heating return water pump 1, chilled water supply pump 2, chilled water return water pump 1, chilled water return water pump 2, circulating cooling water supply pump, and circulating cooling water return water pump. The electric chiller unit provides cooling for the process cooling load, and the hot water storage tank provides heating for the hydrogen production station heating system. After the heat in the hot water storage tank is used up, electric valves c and d are closed, and electric valve e is opened to start heating water supply pump 3, heating return water pump 2, and the electric boiler to provide heating for the hydrogen production station heating system.

[0063] During the transition season, the electric chiller unit is started to supply cooling for the process cooling load Q1. This means that the wind and solar power systems generate electricity, the electrochemical energy storage system operates in discharge mode, the electrolyzer is partially operational, hydrogen is produced and stored in a hydrogen storage tank after passing through a hydrogen separator, hydrogen scrubber, hydrogen cooler, hydrogen purification system, and hydrogen compression system, and oxygen is produced and stored in an oxygen storage tank after passing through an oxygen separator, oxygen scrubber, and oxygen cooler. The hydrogen pressure regulating station, air compressor, combustion chamber, gas turbine, flue gas hot water heat exchanger, and hot water type lithium bromide unit are not operational; only electric valves f, h, and i are opened to start the chilled water supply pump 2, chilled water return pump 1, chilled water return pump 2, circulating cooling water supply pump, circulating cooling water return pump, and the electric chiller unit for cooling.

[0064] In the pure hydrogen non-power generation operation mode, when wind and solar power generation is sufficient, the system can significantly reduce the phenomenon of "wind and solar curtailment" and significantly improve the utilization rate of renewable energy by prioritizing the activation of electrochemical energy storage to store excess electricity and integrating the surplus electricity into the grid. At the same time, the electrolyzer only operates partially to match the output of wind and solar power on demand, avoiding energy loss caused by the equipment running at full load and achieving efficient utilization of green electricity. Furthermore, the pure hydrogen simple power generation system does not operate, which can effectively prevent hydrogen energy from being consumed by unnecessary power generation, allowing the hydrogen and oxygen produced by the green electricity hydrogen and oxygen production system to be fully stored. This not only reserves fuel for peak shaving of pure hydrogen power generation when wind and solar power is insufficient, but also expands commercial revenue through hydrogen energy export and improves the economics of the system. In terms of cooling and heating, the cooling demand of processes and buildings can be stably met by electric chiller units during the cooling season and transitional season. During the heating season, waste heat stored in hot water storage tanks is used first for heating, and electric boilers are started as a backup when insufficient, forming an energy supply logic of "heat storage first, electricity supplement as a supplement". Even without the support of waste heat from pure hydrogen power generation, the energy continuity of hydrogen production station processes and buildings can still be guaranteed through tiered energy supply, improving the reliability of energy supply. At the same time, surplus wind and solar energy can be connected to the grid to obtain grid-connected revenue, reducing dependence on grid electricity purchases. Prioritizing the use of existing heat storage and starting and stopping cooling or electric boilers on demand can avoid the blind operation of high-energy-consuming equipment. The shutdown of the pure hydrogen system also further reduces equipment maintenance and fuel consumption costs, reducing the overall operating cost of the system. Moreover, the system can dynamically adjust the operating load of the electrolyzer, energy storage status, and the start-up and shutdown of cooling and heating equipment according to wind and solar output, achieving energy supply and demand balance without relying on the pure hydrogen power generation system, enhancing adaptability to different energy conditions and improving operational flexibility.

[0065] The various numerical designations such as "first," "second," etc., used in this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application, nor do they indicate the order of events.

[0066] At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not impose any limitation. In the embodiments of this application, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order or size among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0067] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0068] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A wind-solar-hydrogen-storage-gas integrated energy supply system, characterized in that, include: Wind and solar power generation and energy storage systems, green electricity hydrogen and oxygen production systems, pure hydrogen simple power generation systems, waste heat heating systems and waste heat cooling systems; The wind and solar power generation and energy storage system is connected to the green electricity hydrogen and oxygen production system to generate green electricity, distribute the green electricity to the green electricity hydrogen and oxygen production system, and connect the excess green electricity to the power grid or store it in the electrochemical energy storage system to release electricity to supplement power supply when the wind and solar power generation power is insufficient. The green electricity hydrogen and oxygen production system is connected to the pure hydrogen simple power generation system. It is used to produce hydrogen and oxygen by electrolyzing water with green electricity, purify, cool, refine and compress the hydrogen and oxygen, and transport hydrogen to the hydrogen filling station and the pure hydrogen simple power generation system according to a preset ratio. The pure hydrogen simple power generation system is connected to the waste heat heating system to generate electricity using hydrogen to meet the peak-shaving demand of insufficient wind and solar power generation, provide stable rotational inertia, and at the same time transfer the waste heat of the high-temperature flue gas discharged from the gas turbine to the waste heat heating system and the waste heat cooling system. The waste heat heating system is connected to the waste heat cooling system to recover waste heat and transport it to the hydrogen production station heating system to meet the building heating needs in winter. When the waste heat is insufficient, the hot water storage tank is used to supplement the heating. When the heat of the hot water storage tank is exhausted, the electric boiler is started to supplement the heating, while providing a heat base for the waste heat cooling system. The waste heat cooling system is connected to the green electricity hydrogen and oxygen production system. It is used to generate cooling capacity using waste heat, provide process cooling capacity for the green electricity hydrogen and oxygen production system, meet the summer building cooling needs of the hydrogen production station, and start the electric refrigeration unit to provide cooling in conjunction when the waste heat cooling capacity is insufficient.

2. The integrated wind-solar-hydrogen-storage-gas energy supply system according to claim 1, characterized in that, The wind and solar power generation and energy storage system includes a wind power generation system, a photovoltaic power generation system, a wind and solar booster station, an electrochemical energy storage system, and a power grid; The output terminals of the wind power generation system and the photovoltaic power generation system are both connected to the wind-solar booster station, and the wind-solar booster station is connected to the electrochemical energy storage system, the power grid, and the transformer group of the hydrogen production station, respectively.

3. The integrated wind-solar-hydrogen-storage-gas energy supply system according to claim 1, characterized in that, The green electricity hydrogen and oxygen production system includes a hydrogen production station transformer group, a rectifier, an electrolyzer, an oxygen separation and storage unit, a hydrogen separation and storage unit, and a hydrogen filling station. The transformer group of the hydrogen production station is connected to the power grid and the rectifier, respectively. The rectifier is connected to the electrolyzer, and the electrolyzer is connected to the oxygen separation and storage unit and the hydrogen separation and storage unit, respectively.

4. The integrated wind-solar-hydrogen-storage-fuel energy supply system according to claim 3, characterized in that, The oxygen separation and storage unit and the hydrogen separation and storage unit include: The oxygen separation and storage unit includes an oxygen separator, an oxygen scrubber, an oxygen cooler, and an oxygen storage tank connected in sequence. The hydrogen separation and storage unit includes a hydrogen separator, a hydrogen scrubber, a hydrogen cooler, a hydrogen purification system, a hydrogen compression system, and a hydrogen storage tank connected in sequence. The hydrogen storage tanks are connected to the hydrogen filling station and the hydrogen pressure regulating station, respectively.

5. The integrated wind-solar-hydrogen-storage-fuel energy supply system according to claim 1, characterized in that, The pure hydrogen simple power generation system includes a hydrogen pressure regulating station, an air compressor, a combustion chamber, a gas turbine, and a flue gas hot water heat exchanger. The hydrogen pressure regulating station is connected to the combustion chamber, which is connected to the air compressor and the gas turbine, respectively. The gas turbine is connected to the flue gas hot water heat exchanger.

6. The integrated wind-solar-hydrogen-storage-gas energy supply system according to claim 1, characterized in that, The waste heat heating system includes a flue gas hot water heat exchanger, a heating pump set, a heating water distributor, a hydrogen production station heating system, a hot water storage tank, and an electric boiler. The flue gas hot water heat exchanger is connected to the hot water type lithium bromide generator unit via electric valve a, and is also connected to the heating supply water pump 1 and the heating return water pump 1 respectively; the heating supply water pump 1 is connected to the heating water distributor, the heating water distributor is connected to the hydrogen production station heating system via electric valve b, and connected to the hot water storage tank via electric valve c; the hot water storage tank is connected to the hydrogen production station heating system via electric valve d and heating supply water pump 2; the hydrogen production station heating system is connected to the electric boiler via heating supply water pump 3 and electric valve e, and the electric boiler is connected to the heating return water pump 2.

7. The integrated wind-solar-hydrogen-storage-gas energy supply system according to claim 1, characterized in that, The waste heat cooling system includes a hot water type lithium bromide chiller, an electric chiller, a chilled water supply and return pump set, a chilled water supply manifold, a chilled water supply distributor, a chilled water return distributor, a cooling tower, and a circulating cooling water pump set. The hot water type lithium bromide unit is connected to the chilled water supply pump 1 and the chilled water return distributor, respectively. The chilled water supply pump 1 is connected to the chilled water supply manifold, and the chilled water supply manifold is connected to the chilled water supply pump 2 and the electric chiller unit via electric valve f. The chilled water supply distributor is connected to the oxygen cooler, hydrogen cooler, hydrogen purification system, hydrogen compression system and hydrogen production station cooling system, respectively. The hydrogen production station cooling system is connected to the chilled water return pump 1 via the chilled water return manifold, and the chilled water return pump 1 is connected to the chilled water return distributor. The electric chiller unit is connected to the cooling tower via electric valve i, the circulating cooling water pump group, and the electric chiller unit.

8. An operation method for a wind-solar-hydrogen-storage-gas integrated energy supply system, characterized in that, The method is applied to the integrated wind-solar-hydrogen-storage-gasoline energy supply system as described in any one of claims 1-7, comprising: Based on the real-time matching status between wind and solar power generation and hydrogen production power at the hydrogen production station, the pure hydrogen power generation operation mode or the pure hydrogen non-power generation operation mode is dynamically switched. Based on the pure hydrogen power generation operation mode or the pure hydrogen non-power generation operation mode, the above-mentioned waste heat heating system and the above-mentioned waste heat cooling system are controlled to operate different preset cooling or heating schemes according to the cooling season, heating season and transition season.

9. The operation method of the integrated wind-solar-hydrogen storage and fuel gas energy supply system according to claim 8, characterized in that, The method of dynamically switching between pure hydrogen power generation mode and pure hydrogen non-power generation mode based on the real-time matching status of wind and solar power generation and hydrogen production station power includes: When the wind and solar power generation capacity is less than the hydrogen production capacity of the hydrogen production station, the electrochemical energy storage is activated first, and the stored electricity is connected to the power grid through the wind and solar booster station. At the same time, the pure hydrogen simple power generation system is turned on for peak shaving. At this time, the wind and solar power generation and energy storage system, the green electricity hydrogen and oxygen production system, and the pure hydrogen simple power generation system are all in operation. When the wind and solar power generation capacity is greater than the hydrogen production capacity of the hydrogen production station, the electrochemical energy storage is activated first, and the excess electricity is fed into the power grid through the wind and solar booster station. At this time, the wind and solar power generation and energy storage system and the green electricity hydrogen and oxygen production system are in operation, while the pure hydrogen simple power generation system is not in operation.

10. The operation method of the integrated wind-solar-hydrogen storage and fuel gas energy supply system according to claim 8, characterized in that, The control of the waste heat heating system and the waste heat cooling system based on the pure hydrogen power generation operation mode or the pure hydrogen non-power generation operation mode to operate different preset cooling or heating schemes according to the cooling season, heating season and transition season includes: When the operation mode is pure hydrogen power generation, during the cooling season, the preset cooling scheme is activated based on the comparison between the sum of the process cooling load and the cooling load of the hydrogen production station's cooling system and the cooling load of the hot water lithium bromide unit; during the heating season, the preset heating scheme is activated based on the comparison between the heating load of the hydrogen production station's heating system and the heating load of the flue gas hot water lithium bromide unit; during the transition season, the preset transition scheme is activated based on the comparison between the process cooling load and the cooling load of the hot water lithium bromide unit. When the operating mode is pure hydrogen without power generation, during the cooling season, the electric chiller unit is started to provide cooling for the process cooling load and the cooling load of the hydrogen production station cooling system; during the heating season, the hot water storage tank is used for heating first. When the hot water in the storage tank is used up, the electric boiler is started for heating, while the process cooling load is provided by the electric chiller unit; during the transition season, the electric chiller unit is started to provide cooling for the process cooling load.

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