CN215300161U - Hydrogen production system based on surplus electric power of nuclear power station and nuclear power system - Google Patents
Hydrogen production system based on surplus electric power of nuclear power station and nuclear power system Download PDFInfo
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- CN215300161U CN215300161U CN202121320547.1U CN202121320547U CN215300161U CN 215300161 U CN215300161 U CN 215300161U CN 202121320547 U CN202121320547 U CN 202121320547U CN 215300161 U CN215300161 U CN 215300161U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a hydrogen production system based on surplus electric power of nuclear power station, the system includes: the hydrogen production system comprises an alkaline electrolyzed water hydrogen production system, an oxyhydrogen separation scrubber, a hydrogen purification device, a first hydrogen pressure regulating device and a hydrogen storage bottle group; the alkaline electrolyzed water hydrogen production system, the hydrogen-oxygen separation scrubber, the hydrogen purification device, the first hydrogen pressure adjusting device and the hydrogen storage bottle group are sequentially connected; the alkaline electrolyzed water hydrogen production system is connected with an external nuclear power station to prepare hydrogen by utilizing surplus electric power of the alkaline electrolyzed water hydrogen production system. The utility model discloses utilize the surplus electric power of nuclear power station to carry out electrolysis water hydrogen manufacturing, suitably store the energy with the hydrogen form to mix hydrogen and natural gas as the fuel of gas turbine electricity generation at the higher period of load, or through other utilization ways, realize the production of the hydrogen energy, store and the integration flow of utilization.
Description
Technical Field
The utility model relates to a technical field of the electric power reutilization of nuclear power station especially relates to a hydrogen production system and nuclear power system based on surplus electric power of nuclear power station.
Background
In recent years, the nuclear power technology in China is rapidly developed, and the occupation proportion of nuclear power units in the energy composition in China is increased year by year. With the continuous increase of the peak-valley difference of the power grid and the large-scale development of nuclear power, the disadvantages of load reduction operation and participation in peak shaving of the nuclear power unit are increasingly obvious. In extreme weather or other special periods (such as holidays and the like), the nuclear power unit can be scheduled to be shut down or operated in a power reduction mode so as to cooperate with peak shaving of a power grid. However, from the aspects of nuclear fuel utilization rate, equipment reliability, system operation economy and the like, the nuclear power unit is more suitable for mainly operating with the base load for a long time and is not suitable for shutdown or power reduction operation.
In order to relieve peak load regulation pressure of a nuclear power unit and enable a nuclear power plant to operate in a base load state as much as possible, a currently common mode is to prepare hydrogen by using 'three-waste' electric quantity and low-valley electric quantity of the nuclear power plant. In addition to the hydrogen production by water electrolysis, other hydrogen production methods include the hydrogen production by methanol water. The hydrogen prepared by various ways can be finally used by a hydrogen combustion engine or a power generation subsystem, thereby achieving the effect of recycling energy.
However, the conventional method has the technical problems that the hydrogen prepared by using the 'three abandoned' electricity and the off-peak electricity of the nuclear power station is difficult to coordinate with the actual operation characteristics and the peak regulation condition of the nuclear power station, and the power is difficult to regulate; the hydrogen preparation method by adopting methanol water is characterized in that methanol cracking reaction and carbon monoxide shift reaction are carried out under the action of a catalyst, and hydrogen and carbon dioxide are separated, so that high-purity hydrogen is obtained and simultaneously the emission of greenhouse gas is increased along with the emission of carbon.
Disclosure of Invention
The utility model provides a hydrogen production system based on surplus electric power of nuclear power station, the system can utilize the surplus electric power of nuclear power station to make hydrogen through electrolysis water hydrogen manufacturing equipment, realizes the production of the hydrogen energy, stores and the integration flow of utilization.
The utility model discloses the first aspect of embodiment provides a hydrogen production system based on surplus electric power of nuclear power station, the system includes:
the hydrogen production system comprises an alkaline electrolyzed water hydrogen production system, an oxyhydrogen separation scrubber, a hydrogen purification device, a first hydrogen pressure regulating device and a hydrogen storage bottle group;
the alkaline electrolyzed water hydrogen production system, the hydrogen-oxygen separation scrubber, the hydrogen purification device, the first hydrogen pressure adjusting device and the hydrogen storage bottle group are sequentially connected;
the alkaline electrolyzed water hydrogen production system is connected with an external nuclear power station.
In one possible implementation manner of the first aspect, the hydrogen production system further includes: an alkali liquor cooler connected with the alkaline water electrolysis hydrogen production system
In one possible implementation manner of the first aspect, the hydrogen production system further includes: and the alkali liquor filter is respectively connected with the alkali liquor cooler and the hydrogen-oxygen separation washer.
In one possible implementation manner of the first aspect, the hydrogen production system further includes: and the pure water supply system is connected with the alkali liquor filter.
In one possible implementation manner of the first aspect, the hydrogen production system further includes: the fuel premixing device is connected with the hydrogen storage cylinder group.
In one possible implementation manner of the first aspect, the hydrogen production system further includes: one end of the hydrogen-rich gas turbine generator set is connected with the fuel premixing device, and the other end of the hydrogen-rich gas turbine generator set is connected with a power grid or a user.
In one possible implementation manner of the first aspect, the hydrogen production system further includes: the long tube trailer is connected with the first hydrogen pressure adjusting device and the second hydrogen pressure adjusting device respectively.
In one possible implementation manner of the first aspect, the hydrogen production system further includes: and the hydrogen filling machine is connected with the second hydrogen pressure adjusting device.
In one possible implementation manner of the first aspect, the hydrogen production system further includes: the hydrogen fuel cell automobile is connected with the hydrogen filling machine.
A second aspect of the embodiments of the present invention provides a nuclear power system, including: the system comprises a nuclear power station, a main transformer, a high-voltage station transformer, a generator, an excitation device and the hydrogen production system based on the surplus power of the nuclear power station;
the hydrogen production system based on the surplus electric power of the nuclear power station is connected with the connecting end of the main transformer and the generator or connected with the connecting end of the nuclear power station and the main transformer.
Compared with the prior art, the embodiment of the utility model provides a pair of hydrogen production system and nuclear power system based on surplus electric power of nuclear power station, including following beneficial effect:
the method comprises the following steps of (1) recycling power, namely, utilizing surplus power of a nuclear power station, namely low-cost off-peak power, preparing hydrogen through large-scale water electrolysis hydrogen production equipment, storing energy in a hydrogen form, mixing the hydrogen with natural gas at a time interval with higher load, and using the mixture as a fuel for power generation of a gas turbine;
hydrogen preparation-the hydrogen product prepared by the hydrogen production method by water electrolysis has high purity, no carbon emission and other pollution, and the preparation efficiency can reach 60% -80%, but the cost is higher compared with other hydrogen production methods, and a large part of the hydrogen is from the electricity cost (about 80%). According to the difference of the electrolyte, the method can be mainly divided into three modes of hydrogen production by alkaline water electrolysis, hydrogen production by proton exchange membrane water electrolysis and hydrogen production by solid oxide water electrolysis. The technical route is that a hydrogen production system is configured for the nuclear power station to reduce the peak shaving depth of a unit and ensure and improve the operation economy of the nuclear power station, and the technical maturity and the system operation safety are the primary consideration. Considering the factors of cost, commercial maturity and the like of the hydrogen production technology comprehensively, the technical route adopts the alkaline water electrolysis hydrogen production technology which is most mature in market development, large in single hydrogen production scale and relatively low in cost;
hydrogen storage and transportation-hydrogen storage modes mainly include high-pressure gaseous hydrogen storage, low-temperature liquid hydrogen storage, organic liquid hydrogen storage and solid hydrogen storage. The technical route adopts a high-pressure gaseous hydrogen storage and transportation mode, namely, hydrogen is compressed to a certain pressure level by a hydrogen compressor, stored in a hydrogen storage cylinder group and transported by tools such as a long-tube trailer and the like;
the application of hydrogen generation, namely hydrogen, can cover various fields, wherein the problem that electric energy is difficult to store can be effectively solved in the electric power field, namely, hydrogen is used as an energy storage medium, surplus electric power is properly used for preparing and storing the hydrogen when the electric power is over-produced, and the hydrogen is used for producing the electric power again through a fuel cell or a hydrogen-rich gas turbine when the electric power is under-produced. Because the conventional nuclear power station has a large installed scale, the purpose of improving the operation economy of the nuclear power station is achieved by adjusting the peak shaving depth, a large amount of surplus electricity is generated, and correspondingly, the amount of hydrogen obtained by the hydrogen production mode through water electrolysis is large. Various hydrogen energy utilization ways are comprehensively considered, and the hydrogen energy suitable for the scene is preferably applied in a large scale mode by utilizing a hydrogen-rich gas turbine to generate electricity. In this way, in addition to ensuring the utilization hours of the nuclear power plant and improving the operation safety and economy of the nuclear power plant, the hydrogen prepared and stored by the electricity in the valley time can be utilized, and if the hydrogen is used for generating electricity in the peak load time, the part of the peak-valley electricity price difference can bring extra economic benefits.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogen production system based on surplus power of a nuclear power plant according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a nuclear power system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a nuclear power system according to an embodiment of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The current common mode has the following technical problems that the hydrogen prepared by using the 'three abandoned' electric quantity and the low-ebb electric quantity of the nuclear power station is difficult to be coordinated with the actual operation characteristic and the peak regulation condition of the nuclear power station, and the electric power is difficult to be regulated; the hydrogen preparation method by adopting methanol water is characterized in that methanol cracking reaction and carbon monoxide shift reaction are carried out under the action of a catalyst, and hydrogen and carbon dioxide are separated, so that high-purity hydrogen is obtained and simultaneously the emission of greenhouse gas is increased along with the emission of carbon.
In order to solve the above problem, a hydrogen production system based on surplus power of a nuclear power plant according to an embodiment of the present application will be described and explained in detail with reference to the following specific embodiments.
Referring to fig. 1, a schematic structural diagram of a hydrogen production system based on surplus power of a nuclear power plant according to an embodiment of the present invention is shown.
Specifically, the hydrogen production system includes: the hydrogen production system comprises an alkaline electrolyzed water hydrogen production system, an oxyhydrogen separation scrubber, a hydrogen purification device, a first hydrogen pressure regulating device and a hydrogen storage bottle group;
the alkaline electrolyzed water hydrogen production system, the hydrogen-oxygen separation scrubber, the hydrogen purification device, the first hydrogen pressure adjusting device and the hydrogen storage bottle group are sequentially connected;
the alkaline electrolyzed water hydrogen production system is connected with the nuclear power station.
Further, the hydrogen production system further includes: and the alkali liquor cooler is connected with the alkaline electrolytic water hydrogen production system.
Further, the hydrogen production system further includes: and the alkali liquor filter is respectively connected with the alkali liquor cooler and the hydrogen-oxygen separation washer.
Further, the hydrogen production system further includes: and the pure water supply system is connected with the alkali liquor filter.
Further, the hydrogen production system further includes: the fuel premixing device is connected with the hydrogen storage cylinder group.
Further, the hydrogen production system further includes: one end of the hydrogen-rich gas turbine generator set is connected with the fuel premixing device, and the other end of the hydrogen-rich gas turbine generator set is connected with a power grid or a user.
Further, the hydrogen production system further includes: the long tube trailer is connected with the first hydrogen pressure adjusting device and the second hydrogen pressure adjusting device respectively.
Further, the hydrogen production system further includes: and the hydrogen filling machine is connected with the second hydrogen pressure adjusting device.
Further, the hydrogen production system further includes: the hydrogen fuel cell automobile is connected with the hydrogen filling machine.
In the embodiment, the pure water required in the hydrogen production link is provided by an independent pure water supply system, and the pure water is required to pass through the processes of ultrafiltration and secondary reverse osmosis treatment before entering the system and then is sent to the alkaline electrolytic water hydrogen production device by a water replenishing pump so as to replenish the water consumed in the previous cycle.
In the alkaline water electrolysis hydrogen production device, pure water is electrolyzed into hydrogen and oxygen under the action of surplus electric power provided by a nuclear power unit, a gas product and circulating electrolyte form mixed liquid, and the mixed liquid and the circulating electrolyte enter a hydrogen-oxygen separation scrubber together for gas-liquid separation treatment. The alkali liquor rich in hydrogen and oxygen is subjected to the processes of sedimentation separation, washing, cooling and the like in an oxyhydrogen separation washer to obtain a product: the residual circulating electrolyte (product 1) is pressurized by an alkali liquor circulating pump and then conveyed back to the alkaline water electrolysis hydrogen production device for next electrolysis, so that alkali liquor circulation is realized; the oxygen (product 2) can be directly discharged to the outside after being separated out or can be sold on the market after being collected, and the income of byproducts is obtained; and the hydrogen (product 3) enters a purification device for further treatment.
The normal working pressure range of the alkaline electrolyzed water hydrogen production system is 1.5-2.0 MPa, the normal working temperature is 85 +/-5 ℃, and the system is controlled by a full-automatic microcomputer and can carry out remote centralized management. Because the reaction speed of hydrogen production can be influenced by the temperature of the electrolytic bath, the safe and stable operation of the hydrogen production link can be ensured by controlling the working temperature of the system, and the temperature of the returned alkali liquor needs to be properly adjusted by using the action of the alkali liquor cooler before the electrolyte enters the electrolytic bath.
The purity of oxygen prepared by the alkaline water electrolysis device can reach more than 98.5 percent, and the purity of hydrogen can reach more than 99.8 percent. Generally, oxygen and moisture impurities in hydrogen can be removed through a hydrogen purification device so as to meet users with higher requirements on oxygen content and water content of the hydrogen, in the hydrogen purification device, the hydrogen and oxygen remained in the hydrogen are subjected to synthesis reaction under the action of a catalyst, and water and oxygen in products are removed through processes of cooling, adsorption, separation and the like, so that high-purity hydrogen with purity of over 99.99% is finally obtained. Under the pressurization effect of a hydrogen pressurization device (the exhaust pressure is 45MPa), after hydrogen reaches a certain pressure level, the hydrogen can be directly discharged into a high-pressure hydrogen storage cylinder group at a hydrogen production point for storage (the storage pressure is about 45MPa), or compressed hydrogen is transported to the vicinity of a hydrogen utilization point through a long-tube trailer (the highest working pressure is 25MPa) to start gas discharge, and the gas discharge stops when the pressure of the hydrogen in the long-tube trailer is reduced to 5MPa, and the hydrogen returns to a hydrogen production station for next gas transport.
Before the hydrogen is utilized, the output of the hydrogen can be controlled by the gas regulating valve, and the hydrogen is subjected to a series of pressure treatment processes such as pressurization of a hydrogen compression system or depressurization of a buffer tank, so that the requirement of a user on the gas pressure is met.
For a hydrogen-rich gas turbine power plant, hydrogen pre-stored in a hydrogen storage cylinder group needs to be mixed with natural gas from a pipe network in a certain proportion (the actual hydrogen mixing proportion needs to be determined according to the hydrogen mixing capacity of each hydrogen-rich gas turbine type), and then the hydrogen is used as fuel of the hydrogen-rich gas turbine to generate electricity, so that the application of the hydrogen in the energy field is realized; for the hydrogen filling station, hydrogen can be filled into a vehicle-mounted hydrogen storage bottle of a hydrogen fuel cell automobile through a filling machine, so that the hydrogen utilization in the traffic field is realized, and the working pressure of a hydrogen gun arranged on the hydrogen filling machine is 35 MPa.
In this embodiment, the embodiment of the utility model provides a pair of hydrogen production system based on surplus electric power of nuclear power station, including following beneficial effect:
the method comprises the following steps of (1) recycling power, namely, utilizing surplus power of a nuclear power station, namely low-cost off-peak power, preparing hydrogen through large-scale water electrolysis hydrogen production equipment, storing energy in a hydrogen form, mixing the hydrogen with natural gas at a time interval with higher load, and using the mixture as a fuel for power generation of a gas turbine;
hydrogen preparation-the hydrogen product prepared by the hydrogen production method by water electrolysis has high purity, no carbon emission and other pollution, and the preparation efficiency can reach 60% -80%, but the cost is higher compared with other hydrogen production methods, and a large part of the hydrogen is from the electricity cost (about 80%). According to the difference of the electrolyte, the method can be mainly divided into three modes of hydrogen production by alkaline water electrolysis, hydrogen production by proton exchange membrane water electrolysis and hydrogen production by solid oxide water electrolysis. The technical route is that a hydrogen production system is configured for the nuclear power station to reduce the peak shaving depth of a unit and ensure and improve the operation economy of the nuclear power station, and the technical maturity and the system operation safety are the primary consideration. Considering the factors of cost, commercial maturity and the like of the hydrogen production technology comprehensively, the technical route adopts the alkaline water electrolysis hydrogen production technology which is most mature in market development, large in single hydrogen production scale and relatively low in cost;
hydrogen storage and transportation-hydrogen storage modes mainly include high-pressure gaseous hydrogen storage, low-temperature liquid hydrogen storage, organic liquid hydrogen storage and solid hydrogen storage. The technical route adopts a high-pressure gaseous hydrogen storage and transportation mode, namely, hydrogen is compressed to a certain pressure level by a hydrogen compressor, stored in a hydrogen storage cylinder group and transported by tools such as a long-tube trailer and the like;
the application of hydrogen generation, namely hydrogen, can cover various fields, wherein the problem that electric energy is difficult to store can be effectively solved in the electric power field, namely, hydrogen is used as an energy storage medium, surplus electric power is properly used for preparing and storing the hydrogen when the electric power is over-produced, and the hydrogen is used for producing the electric power again through a fuel cell or a hydrogen-rich gas turbine when the electric power is under-produced. Because the conventional nuclear power station has a large installed scale, the purpose of improving the operation economy of the nuclear power station is achieved by adjusting the peak shaving depth, a large amount of surplus electricity is generated, and correspondingly, the amount of hydrogen obtained by the hydrogen production mode through water electrolysis is large. Various hydrogen energy utilization ways are comprehensively considered, and the hydrogen energy suitable for the scene is preferably applied in a large scale mode by utilizing a hydrogen-rich gas turbine to generate electricity. In this way, in addition to ensuring the utilization hours of the nuclear power plant and improving the operation safety and economy of the nuclear power plant, the hydrogen prepared and stored by the electricity in the valley time can be utilized, and if the hydrogen is used for generating electricity in the peak load time, the part of the peak-valley electricity price difference can bring extra economic benefits.
Referring to fig. 2-3, a first schematic structural diagram of a nuclear power system provided by an embodiment of the present invention and a second schematic structural diagram of a nuclear power system provided by an embodiment of the present invention are respectively shown.
As an example, the nuclear power system may include:
the system comprises a nuclear power station, a main transformer, a high-voltage station transformer, a generator, an excitation device and a hydrogen production system based on surplus power of the nuclear power station, wherein the hydrogen production system comprises a power station, a main transformer, a high-voltage station transformer, a generator and an excitation device;
the hydrogen production system based on the surplus electric power of the nuclear power station is connected with the connecting end of the main transformer and the generator or connected with the connecting end of the nuclear power station and the main transformer.
In the present embodiment, the output power P of the generatorGIn (B), there is a part (P)Plant (S.A.)) After the voltage is reduced by the service transformer, the service transformer supplies power to various auxiliary equipment in the factory through a cable by the service power distribution device.
In the normal starting, running, shutdown, detection and accident shutdown processes of a nuclear power unit, service power is needed to ensure the required power load of the nuclear power unit, and the nuclear power unit has high requirements on running safety and reliability, so the take-out scheme of a hydrogen production system must be considered on the premise of ensuring the service power.
For this purpose, the present invention proposes two connection schemes, as shown in fig. 2 and 3, respectively. In the figure, PHydrogen productionRepresents the required power, P, of the electrolyzed water hydrogen production system0Representing the main transformer output power, P1Representing the power of the access grid; power value P of generatorGThe method is determined by the installed scale of the nuclear power unit and the load rate of the unit; service electric power PPlant (S.A.)Influenced by the load rate of the unit, generally speaking, the power consumption rate of a nuclear power plant is 5% -8% of the generating capacity of the unit; pHydrogen productionIs determined by the hydrogen production scale of the water electrolysis hydrogen production system.
When the nuclear power does not participate in peak shaving or the peak shaving depth is reduced, the utilization hours and the total power generation capacity of the nuclear power unit are ensured, PGThe added part is used for hydrogen production (P) of the hydrogen production systemHydrogen production) Access to grid power (P)0) The operation is kept unchanged, and the safe and stable operation of the nuclear power unit can be ensured.
Specifically, referring to fig. 2, in actual operation, if the approval of the nuclear power enterprise is given, the water electrolysis hydrogen production system can be taken out from one side of the nuclear power plant, and the taking-out position of the hydrogen production system is the same as the service power, i.e. PG-P Plant (S.A.)-PHydrogen production＝P0＝P1. At the moment, the unit generator simultaneously supplies power to the auxiliary power and hydrogen production system and the main transformer of the nuclear power unit.
Referring to fig. 3, in actual operation, if a nuclear power enterprise does not agree to take electricity from the power plant side for hydrogen production due to the consideration of safe and stable operation of the unit, the electricity utilization connection position of the water electrolysis hydrogen production system should be on the power grid side, that is, the electricity utilization connection position is connected from the main transformer outlet voltage: p0-PHydrogen production＝P1(wherein: P0＝PG-PPlant (S.A.)). At the moment, the generator of the unit only supplies power to the main transformer of the service power and nuclear power unit, the outlet of the main transformer is divided into two paths, one path supplies power to the hydrogen production system, and the other path supplies power to the hydrogen production systemOne path is 500kV power grid power transmission.
In addition, the service power of the nuclear power station is kept unchanged, and the actual on-line electric quantity is determined according to the requirement of the central regulation, namely P in the two formulasPlant (S.A.)And access to the power P of the power grid1All remain unchanged through a newly connected hydrogen production system (P)Hydrogen production) The surplus electric quantity produced by the nuclear power station is consumed, and the power P of the outlet of the generator of the nuclear power unit can be increasedGAnd the unit is allowed to run at full capacity as much as possible.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A hydrogen production system based on surplus power of a nuclear power plant, the system comprising: the hydrogen production system comprises an alkaline electrolyzed water hydrogen production system, an oxyhydrogen separation scrubber, a hydrogen purification device, a first hydrogen pressure regulating device and a hydrogen storage bottle group;
the alkaline electrolyzed water hydrogen production system, the hydrogen-oxygen separation scrubber, the hydrogen purification device, the first hydrogen pressure adjusting device and the hydrogen storage bottle group are sequentially connected;
the alkaline electrolyzed water hydrogen production system is connected with an external nuclear power station.
2. The nuclear power plant surplus power-based hydrogen production system according to claim 1, further comprising: and the alkali liquor cooler is connected with the alkaline electrolytic water hydrogen production system.
3. The nuclear power plant surplus power-based hydrogen production system according to claim 2, further comprising: and the alkali liquor filter is respectively connected with the alkali liquor cooler and the hydrogen-oxygen separation washer.
4. The nuclear power plant surplus power-based hydrogen production system according to claim 3, further comprising: and the pure water supply system is connected with the alkali liquor filter.
5. The nuclear power plant surplus power-based hydrogen production system according to claim 1, further comprising: the fuel premixing device is connected with the hydrogen storage cylinder group.
6. The nuclear power plant surplus power-based hydrogen production system according to claim 5, further comprising: one end of the hydrogen-rich gas turbine generator set is connected with the fuel premixing device, and the other end of the hydrogen-rich gas turbine generator set is connected with a power grid or a user.
7. The nuclear power plant surplus power-based hydrogen production system according to claim 1, further comprising: the long tube trailer is connected with the first hydrogen pressure adjusting device and the second hydrogen pressure adjusting device respectively.
8. The nuclear power plant surplus power-based hydrogen production system according to claim 7, further comprising: and the hydrogen filling machine is connected with the second hydrogen pressure adjusting device.
9. The nuclear power plant surplus power-based hydrogen production system according to claim 8, further comprising: the hydrogen fuel cell automobile is connected with the hydrogen filling machine.
10. A nuclear power system, comprising: a nuclear power plant, a main transformer, a high-voltage plant transformer, a generator, an excitation device, and a hydrogen production system based on surplus power of the nuclear power plant according to any one of claims 1 to 9;
the hydrogen production system based on the surplus electric power of the nuclear power station is connected with the connecting end of the main transformer and the generator or connected with the connecting end of the nuclear power station and the main transformer.
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