CN116470572A - New energy power supply system and control method thereof - Google Patents
New energy power supply system and control method thereof Download PDFInfo
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- CN116470572A CN116470572A CN202310375029.7A CN202310375029A CN116470572A CN 116470572 A CN116470572 A CN 116470572A CN 202310375029 A CN202310375029 A CN 202310375029A CN 116470572 A CN116470572 A CN 116470572A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 87
- 239000001257 hydrogen Substances 0.000 claims abstract description 87
- 238000010248 power generation Methods 0.000 claims abstract description 49
- 239000000446 fuel Substances 0.000 claims abstract description 48
- 238000004146 energy storage Methods 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- 210000004027 cell Anatomy 0.000 claims description 44
- 238000006243 chemical reaction Methods 0.000 claims description 43
- 238000003860 storage Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 210000000352 storage cell Anatomy 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 2
- 230000003993 interaction Effects 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000006855 networking Effects 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000012983 electrochemical energy storage Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/008—Systems for storing electric energy using hydrogen as energy vector
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/30—The power source being a fuel cell
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention belongs to the technical field of micro-grids formed by hydrogen production by electrolysis of water, hydrogen-electricity hybrid energy storage and fuel cell power generation, and particularly relates to a new energy power supply system and a control method thereof, wherein the design of a preassembled system device is developed based on concepts of modularization, plug and play and the like, equipment such as a hydrogen production power supply platform, an electrolysis tank, a purification device, a hydrogen compressor, a fuel cell and the like are integrated in a container module, the equipment adopts modularized arrangement, the networking efficiency of the system is improved, the optimal control of a hydrogen-electricity interaction system is realized, and the production efficiency of the hydrogen-electricity interaction system is greatly improved; the system can be directly arranged on the project site, and can be connected with a newly built/modified net rack, so that the project site construction difficulty is reduced, the project construction period is shortened, the convenience of system arrangement is improved, and the requirements of various scenes can be met.
Description
Technical Field
The invention belongs to the technical field of micro-grids formed by hydrogen production by water electrolysis, hydrogen-electricity hybrid energy storage and fuel cell power generation, and particularly relates to a new energy power supply system and a control method thereof.
Background
The distributed new energy power generation is beneficial supplement to traditional power generation, has remarkable promotion effect on energy conservation and environmental protection, and is concerned more and more, the small and medium-scale new energy power generation has become industry, the medium-and small-scale grid-connected power supply is widely applied, a series of problems exist, the generated energy of the distributed new energy power generation system is greatly influenced by the external environment, and the stability of power generation is poor, so that the single-operation distributed new energy power generation system is difficult to ensure the stability of load operation in a circuit, the technology can only be applied to production and life as auxiliary energy, is less separated from a local power grid, is independently operated and is required to be used together with an energy storage device, the existing energy storage and power generation integrated system is difficult to change a power supply scheme when coping with different working conditions, the reliability of the system is not strong, the load is difficult to continuously and stably operate, and the large electric energy waste is caused. The existing distributed new energy power supply system is mostly in a single mode, the energy storage battery is mainly used for peak clipping and valley filling, but the traditional electrochemical energy storage cost is linearly increased along with the increase of energy storage capacity, the small-capacity energy storage cannot meet the long-time load demand of electricity consumption peak period, and the new energy consumption and utilization cost is inevitably increased by using the single electrochemical energy storage battery under the condition, so that the full life cycle benefit of the system is influenced.
Disclosure of Invention
The invention aims to provide a new energy power supply system and a control method thereof, which are used for solving the problems that the existing system only has an electrochemical energy storage battery and can not meet the requirements of full consumption of new energy, long-time energy supply of load and multi-energy complementation, and the system has the advantages of short overall construction period, small occupied area, customizable design of parameters and capability of meeting the requirements of distributed and small-capacity scenes.
In order to solve the technical problems, the invention provides a new energy power supply system which comprises a container, wherein the container is internally divided into 3 areas, namely a power distribution area, a hydrogen production and storage area and a fuel cell power generation area, and a multiport converter and an energy storage battery are arranged in the power distribution area; the hydrogen producing and storing area includes electrolyzer, hydrogen liquid separating device and hydrogen storing bottle; the fuel cell power generation region includes a fuel cell engine; the multi-port converter comprises an alternating current port, a hydrogen production output port, an energy storage battery output port, a direct current power supply output port and a fuel cell input port; the alternating current port is used for connecting a power grid; the hydrogen production output port is connected with the electrolytic tank; the output port of the energy storage battery is connected with the energy storage battery; the direct current power supply output port is used for being connected with a direct current load; the fuel cell input port is connected with the direct current output end of the fuel cell engine; the hydrogen liquid separation device is connected with the electrolytic tank and is used for extracting hydrogen and storing the extracted hydrogen into the hydrogen storage bottle; the hydrogen storage bottle is also used to provide hydrogen gas to the fuel cell engine.
The beneficial effects are as follows: according to the invention, a power supply system for producing hydrogen by using electrolyzed water, storing hydrogen and generating power by using a fuel cell is adopted, equipment such as a power supply platform for producing hydrogen by using electrolyzed water, an electrolytic tank, a purifying device, a hydrogen compressor, a fuel cell and the like are integrated in a container module, each area is arranged in a modularized manner, and a partition wall is arranged between the equipment, so that the networking efficiency of the system is improved, the optimal control of a hydrogen-electricity interaction system is realized, and the production efficiency of the system is greatly improved; the hybrid power supply system meets the load power requirement, reduces the damage to the battery caused by adopting a single mode, can be directly arranged on a project site, is connected with a new/modified net rack, reduces the project site construction difficulty, shortens the project construction period, improves the convenience of system arrangement, and can meet the requirements of multiple types of scenes.
Further, the multi-port converter comprises an AC/DC conversion module, a first DC/DC conversion module, a second DC/DC conversion module and a third DC/DC conversion module; the alternating-current end of the AC/DC conversion module is connected with an alternating-current port, and the direct-current end of the AC/DC conversion module is connected with one end of the second DC/DC conversion module; one end of the first DC/DC conversion module is connected with a direct current power supply output port, and the other end of the first DC/DC conversion module is connected with one end of the second DC/DC conversion module; one end of the second DC/DC conversion module is connected with the hydrogen production output port through the third DC/DC conversion module, is also connected with the fuel cell input port, and the other end of the second DC/DC conversion module is connected with the energy storage cell output port.
The beneficial effects are as follows: the multi-port converter is adopted to improve the networking efficiency of the system, realize the optimal control of the hydrogen-electricity interaction system and greatly improve the production efficiency of the power supply system.
Further, the device also comprises an external hydrogen storage unit, wherein the external hydrogen storage unit is connected with a hydrogen storage pipeline in the container through a prefabricated pipeline interface, and a closable valve is arranged on the prefabricated pipeline interface.
The beneficial effects are as follows: the external hydrogen storage unit is arranged to store redundant hydrogen.
Further, partition walls are arranged among the distribution area, the hydrogen production and storage area and the fuel cell power generation area of the container.
The beneficial effects are as follows: the partition wall is in a modularized design, so that the partition wall is clearly and conveniently overhauled by labor division.
Further, a first radiator and a second radiator are arranged on the outer side of the container, the first radiator is used for radiating heat of the electrolytic tank, and the second radiator is used for radiating heat of the fuel cell.
The beneficial effects are as follows: the first radiator and the second radiator are arranged, so that heat dissipation is facilitated, and accidents caused by overheat of the device are prevented.
Further, the photovoltaic power generation system further comprises a photovoltaic power generation unit, wherein the photovoltaic power generation unit is used for being connected with a power grid.
The beneficial effects are as follows: the photovoltaic power generation unit is used for supplying power, and solar energy is fully utilized to save resources.
In order to solve the technical problems, the invention also provides a control method of the new energy power supply system, if the new energy power supply system is in an off-grid state, if the photovoltaic power generation power is greater than the load power, the photovoltaic power generation unit charges the energy storage battery and stops the fuel cell, and when the energy storage battery is charged, the electrolytic cell is started to produce hydrogen so as to consume the redundant power of the photovoltaic power generation.
The beneficial effects are as follows: according to the invention, a power supply system for producing hydrogen by using electrolyzed water, storing hydrogen and generating power by using a fuel cell is adopted, equipment such as a power supply platform for producing hydrogen by using electrolyzed water, an electrolytic tank, a purifying device, a hydrogen compressor, a fuel cell and the like are integrated in a container module, each area is arranged in a modularized manner, and a partition wall is arranged between the equipment, so that the networking efficiency of the system is improved, the optimal control of a hydrogen-electricity interaction system is realized, and the production efficiency of the system is greatly improved; the hybrid power supply reduces damage to the battery caused by adopting a single mode, and the photovoltaic power generation is adopted, so that redundant photovoltaic power generation is used for hydrogen storage, and the energy consumption rate is improved.
Further, when the photovoltaic power generation power is smaller than or equal to the load power, the energy storage battery is discharged and the fuel battery is discharged to supply power to the load, and the discharge priority of the energy storage battery is higher than that of the fuel battery.
The beneficial effects are as follows: and the redundant photovoltaic power generation is used for storing hydrogen by adopting the photovoltaic power generation, so that the energy consumption rate is improved.
Further, if the new energy power supply system is in a grid-connected state, if the photovoltaic power generation power is larger than the load power, the redundant photovoltaic power generation power outside the load is enabled to charge the energy storage battery, and when the energy storage battery is charged, the electrolytic tank is started to produce hydrogen.
The beneficial effects are as follows: in the grid-connected state, redundant photovoltaic power generation is used for storing hydrogen, so that the energy consumption rate is improved.
Further, when the photovoltaic power is smaller than the load power and the energy storage battery is in an electrified working condition, the energy storage battery is started to supply power to the load so as to supplement the missing power.
The beneficial effects are as follows: in the grid-connected state, the energy storage battery supplies power to the load, so that the flexibility of the system is improved.
Drawings
FIG. 1 is a schematic diagram of a system apparatus of the present invention;
FIG. 2 is a system layout of the present invention;
fig. 3 is a flow chart of a system control method of the present invention.
Reference numerals illustrate:
1. a container; 2. a first heat sink; 3. a vent; 4. a second heat sink; 5. a lithium battery pack; 6. a multiport converter; 7. an electrolytic cell; 8. an oxygen-liquid separator; 9. a hydrogen-liquid separator; 10. a buffer tank; 11. a purification system; 12. a compressor; 13. a hydrogen storage bottle; 14. a fuel cell engine.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
New energy power supply system embodiment:
as shown in fig. 1, the hybrid hydrogen-electricity interaction system of the present embodiment includes a 400V switch cabinet, a multi-port converter (6 in fig. 2), an electrolytic tank 7, a hydrogen production control system, a purification system 11, an auxiliary machine, a compressor, a hydrogen storage steel cylinder 13, a fuel cell engine 14, and a scalable external hydrogen storage unit. The external hydrogen storage unit can be connected with the container 1 externally. The 400V switch cabinet is connected with an external 400V power grid, and the short circuit and overload protection function is started. The isolation transformer has one end connected to a 400V switchgear and the other end connected to a 400V ac port of the multi-port converter 6, and the multi-port converter 6 includes: 400V alternating current port, hydrogen production output port, lithium battery output port, direct current power supply output port and fuel cell input port.
The multi-port converter comprises an AC/DC conversion module, a first DC/DC conversion module, a second DC/DC conversion module and a third DC/DC conversion module; the AC end of the AC/DC conversion module is connected with an AC port, and the DC end is connected with the input port of the fuel cell; one end of the first DC/DC conversion module is connected with a direct current power supply output port, and the other end of the first DC/DC conversion module is connected with one end of the second DC/DC conversion module; one end of the second DC/DC conversion module is connected with the hydrogen production output port through the third DC/DC conversion module, and the other end of the second DC/DC conversion module is connected with the energy storage battery output port, wherein the AC/DC conversion module, the first DC/DC, the second DC/DC conversion module and the third DC/DC conversion module are connected in parallel.
The hydrogen production output port is connected with the electrolytic tank 7, the lithium battery output port is connected with the lithium battery pack 5, the direct current power supply output port is output to the outside of the container 1, the direct current load is connected with the switch, and the fuel battery input port is connected with the direct current output end of the fuel battery engine 14.
The electrolyte of the electrolytic tank is circulated to the hydrogen-liquid separation device to separate the hydrogen gas from the electrolyte, and the hydrogen gas enters the buffer tank through the purification device and is pressurized into the hydrogen storage steel cylinder 13 through the compressor.
The hydrogen inlet of the fuel cell is connected with the hydrogen storage bottle 13 through a pipeline, and the hydrogen inlet is provided with a valve which can be closed.
The expandable external hydrogen storage unit is connected with the hydrogen storage bottle in the container through a prefabricated pipeline interface, and a closable valve is arranged at the interface.
Fig. 2 is a layout of the hydrogen-electricity interaction system according to this embodiment, where the container of the hydrogen-electricity interaction system is divided into 3 areas: the power distribution area, the hydrogen production and storage area and the fuel cell power generation area are separated by partition walls.
The power distribution area is provided with a 400V switch cabinet, a multi-port converter, an energy storage battery and other devices; the hydrogen producing and storing area belongs to an explosion-proof area, and comprises an electrolytic tank 7, an oxygen-liquid separator 8, a hydrogen-liquid separator 9, a buffer tank 10, a purifying system 11, a compressor 12 and a hydrogen storing bottle 13; a first radiator 2 (for radiating heat of an electrolytic cell), a vent 2 and a second radiator 4 (for radiating heat of a fuel cell) are arranged at the top of the container; the fuel cell power generation region is used mainly for housing the fuel cell engine 14.
The implementation aims at photovoltaic power generation, and other embodiments can also adopt wind power generation or other power generation modes of combined power generation, and can operate in an off-grid state and a grid-connected state.
The invention realizes the efficient conversion of electricity and hydrogen and the efficient storage and absorption of clean energy. Based on concepts of modularization, plug and play and the like, the design of a preassembled system device is developed, equipment such as an electrolytic water hydrogen production power supply platform, an electrolytic tank, a purification device, a hydrogen compressor, a fuel cell and the like are integrated in a container module, and the equipment adopts modularized arrangement, so that the networking efficiency of the system is improved, the optimal control of a hydrogen-electricity interaction system is realized, and the production efficiency of the hydrogen-electricity interaction system is greatly improved; the system can be directly arranged on the project site, and can be connected with a newly built/modified net rack, so that the project site construction difficulty is reduced, the project construction period is shortened, the convenience of system arrangement is improved, and the requirements of various scenes can be met.
The invention starts with the actual energy consumption and energy storage requirement of the scene, develops the design of the clean energy conversion and utilization system of the distributed flexible scene, expands the hydrogen-electricity interactive application under small capacity, promotes the interconnection and mutual economy of various energy modes and the deep fusion of the source network and the charge storage, and meets the energy load diversification requirement of the terminal. Meanwhile, a new green hydrogen + micro-grid application mode matched with the nearby clean energy resource is realized for orderly carbon reduction, the nearby full consumption of the distributed energy resource and the multi-win mechanism of the development of the hydrogen energy industry.
Control method embodiments of new energy power supply system:
the new energy power supply system monitors the on-grid and off-grid state, the system monitors the voltage and the frequency of the power grid in real time, when the power grid fails, the grid-connected switch is immediately disconnected, and meanwhile, the off-grid working condition control method is switched by the grid-connected working condition control method.
As shown in fig. 3, when a power failure occurs in the power grid, starting an off-grid working condition control method: the grid-connected switch is disconnected, the power grid port of the multi-port converter stabilizes alternating current voltage, the photovoltaic power generation power, the lithium battery energy storage system and the fuel battery power generation system provide power for a load, and when the power of the photovoltaic inverter is larger than the load power, the lithium battery performs charging control and the fuel battery stops working. When the lithium battery is charged, starting the electrolytic cell to produce hydrogen, and consuming redundant power; when photovoltaic power generation power efficiency is used for load power, the lithium battery is discharged preferentially, and then the fuel battery is started to serve as a long-time power supply support.
When the system monitors that the power supply of the power grid is recovered, the grid-connected working condition control is switched, under the working condition, 400V alternating voltage is stable, only the power of each part is required to be controlled, the control target is to use photovoltaic as much as possible, when the photovoltaic power generation power is larger than the load demand power, the charging of the lithium battery is controlled through the multiport converter, and when the charging is completed, the electrolytic tank is started to produce hydrogen; when the hydrogen storage amount is lower than the minimum hydrogen storage limit value, the water electrolysis is started to produce hydrogen no matter what the photovoltaic power generation power is, and hydrogen production and hydrogen storage are carried out, so that the defect that the power grid fails and the standby energy is insufficient is avoided; when the photovoltaic power is less than the load power and the battery is powered on, the missing power is supplemented by the battery energy storage.
The specific new energy power supply system is described in detail in the new energy power supply system embodiment, and will not be described herein.
The invention can be applied to the distributed power generation hydrogen production, hydrogen storage and hydrogen-electricity conversion system, promotes the construction of a novel micro-grid based on the hydrogen energy storage technology, realizes that the carbon emission of the novel power system is 0, and the absorption rate of the distributed power generation system reaches 100 percent, and has good economic and social benefits. Meanwhile, by means of the design of an external expandable hydrogen storage unit, the capacity of the system is flexibly adjusted, and the system can be expanded and applied in the environment of high-efficiency consumption of three north green electric resources and the environment of green hydrogen preparation application in the area of the Yangtze river economic zone and the environment of offshore wind power hydrogen production in coastal economic areas.
Specific embodiments are given above, but the invention is not limited to the described embodiments. The basic idea of the invention is that the above basic scheme, it is not necessary for a person skilled in the art to design various modified models, formulas, parameters according to the teaching of the invention to take creative effort. Variations, modifications, substitutions and alterations are also possible in the embodiments without departing from the principles and spirit of the present invention.
Claims (10)
1. The new energy power supply system is characterized by comprising a container, wherein the container is internally divided into 3 areas, namely a power distribution area, a hydrogen production and storage area and a fuel cell power generation area, and a multiport converter and an energy storage battery are arranged in the power distribution area; the hydrogen producing and storing area comprises an electrolytic tank, a hydrogen liquid separating device and a hydrogen storing bottle; the fuel cell power generation region includes a fuel cell engine; the multi-port converter comprises an alternating current port, a hydrogen production output port, an energy storage battery output port, a direct current power supply output port and a fuel cell input port; the alternating current port is used for connecting with a power grid; the hydrogen production output port is connected with the electrolytic tank; the output port of the energy storage battery is connected with the energy storage battery; the direct current power supply output port is used for being connected with a direct current load; the fuel cell input port is connected with the direct current output end of the fuel cell engine; the hydrogen-liquid separation equipment is connected with the electrolytic tank and is used for extracting hydrogen and storing the extracted hydrogen into the hydrogen storage bottle; the hydrogen storage bottle is also used to provide hydrogen gas to the fuel cell engine.
2. The new energy power supply system of claim 1, wherein the multi-port converter comprises an AC/DC conversion module, a first DC/DC conversion module, a second DC/DC conversion module, and a third DC/DC conversion module; the alternating-current end of the AC/DC conversion module is connected with an alternating-current port, and the direct-current end of the AC/DC conversion module is connected with one end of the second DC/DC conversion module; one end of the first DC/DC conversion module is connected with a direct current power supply output port, and the other end of the first DC/DC conversion module is connected with one end of the second DC/DC conversion module; one end of the second DC/DC conversion module is connected with the hydrogen production output port through the third DC/DC conversion module, is also connected with the fuel cell input port, and the other end of the second DC/DC conversion module is connected with the energy storage cell output port.
3. The new energy power supply system according to claim 1, further comprising an external hydrogen storage unit, wherein the external hydrogen storage unit is connected with a hydrogen storage pipeline in the container through a prefabricated pipeline interface, and a closable valve is arranged on the prefabricated pipeline interface.
4. The new energy power supply system according to claim 1, wherein a partition wall is provided between the power distribution area, the hydrogen production and storage area and the fuel cell power generation area of the container.
5. The new energy power supply system according to claim 1, wherein a first radiator and a second radiator are arranged outside the container, the first radiator is used for radiating heat of the electrolytic cell, and the second radiator is used for radiating heat of the fuel cell.
6. The new energy power supply system according to any one of claims 1 to 5, further comprising a photovoltaic power generation unit for connecting to a power grid.
7. A control method of a new energy power supply system based on claim 6, characterized in that if the new energy power supply system is in an off-grid state, if the photovoltaic power generation power is greater than the load power, the photovoltaic power generation unit charges the energy storage battery and stops the fuel cell, and when the energy storage battery is charged, the electrolyzer is started to produce hydrogen so as to consume the redundant power of the photovoltaic power generation.
8. The control method of the new energy power supply system according to claim 7, wherein when the photovoltaic generation power is less than or equal to the load power, the load is supplied by discharging the energy storage battery and discharging the fuel cell, and the energy storage battery is higher in discharge priority than the fuel cell.
9. The method according to claim 7, wherein if the new energy power supply system is in a grid-connected state, if the photovoltaic power generation power is greater than the load power, the extra photovoltaic power generation power outside the load is supplied to charge the energy storage battery, and when the charging of the energy storage battery is completed, the electrolyzer is started to produce hydrogen.
10. The method of claim 9, wherein when the photovoltaic power is less than the load power and the energy storage battery is in an energized condition, the energy storage battery is activated to supply power to the load to supplement the missing power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310375029.7A CN116470572A (en) | 2023-04-10 | 2023-04-10 | New energy power supply system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310375029.7A CN116470572A (en) | 2023-04-10 | 2023-04-10 | New energy power supply system and control method thereof |
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| CN116470572A true CN116470572A (en) | 2023-07-21 |
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| CN202310375029.7A Pending CN116470572A (en) | 2023-04-10 | 2023-04-10 | New energy power supply system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116845934A (en) * | 2023-09-01 | 2023-10-03 | 国电投山西能源服务有限公司 | Power distribution circuit system |
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2023
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116845934A (en) * | 2023-09-01 | 2023-10-03 | 国电投山西能源服务有限公司 | Power distribution circuit system |
| CN116845934B (en) * | 2023-09-01 | 2023-11-14 | 国电投山西能源服务有限公司 | Power distribution circuit system |
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