CN114976157A - Hydrogen energy storage power station system - Google Patents
Hydrogen energy storage power station system Download PDFInfo
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- CN114976157A CN114976157A CN202210577897.9A CN202210577897A CN114976157A CN 114976157 A CN114976157 A CN 114976157A CN 202210577897 A CN202210577897 A CN 202210577897A CN 114976157 A CN114976157 A CN 114976157A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0656—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04052—Storage of heat in the fuel cell system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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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
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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
- 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
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention relates to a hydrogen energy storage power station system. In the system, a water electrolysis hydrogen production system, a power generation system, a hydrogen production auxiliary system, a heat recovery system, a heat dissipation system, a refrigeration system, a water supply/supplement system, a control system and a hydrogen storage system are arranged in the same workshop, and the workshop adopts an explosion-proof roof; the water electrolysis hydrogen production system adopts a proton exchange membrane electrolytic cell; the electric energy input of the electrolytic hydrogen production system is a grid-connected bus of a photovoltaic power generation system and commercial power; the hydrogen storage system is connected with the power generation system; the power generation system is used for generating power according to the hydrogen and merging the generated electric energy into the bus through the inversion boosting device; the hydrogen storage system and the water electrolysis hydrogen production system are isolated by an explosion-proof wall; the heat recovery system, the heat dissipation system, the refrigeration system and the water supply/supplement system are all connected with the water electrolysis hydrogen production system; the control system is respectively connected with the water electrolysis hydrogen production system and the power generation system. The invention can reduce the area and cost of the hydrogen energy storage power station system and improve the safety of the hydrogen energy storage power station system.
Description
Technical Field
The invention relates to the field of energy systems, in particular to a hydrogen energy storage power station system.
Background
The hydrogen energy is used as a clean and efficient carbon-free energy and is an important component for developing efficient clean energy and constructing a low-carbon and efficient energy system. International, europe and america have made national plans for developing hydrogen energy successively, and there are already some hydrogen energy demonstration applications on a considerable scale, and scale and commercialization are advancing. The electrolyzer is connected to an electrical grid and the electricity generated from the renewable energy source is used to split water into hydrogen and oxygen, which can be stored and subsequently used to generate electricity in a fuel cell. However, the hydrogen energy storage power station is not standardized and normalized, and a technical standard set for main equipment of the hydrogen energy storage power station is not provided domestically. The difficulties of conventional power stations include: (1) the hydrogen storage tank, the electrolytic cell and the fuel cell belong to hydrogen-related equipment, and are usually independent and separately arranged for ensuring safety, so that the area of the whole station is increased, and the application cost is increased; (2) in a traditional layout, the electrochemical energy storage power station usually places the battery in a battery compartment, and the battery compartment is placed outdoors and is greatly influenced by corrosion and temperature.
Disclosure of Invention
The invention aims to provide a hydrogen energy storage power station system, which can reduce the area and cost of the hydrogen energy storage power station system and improve the safety of the hydrogen energy storage power station system.
In order to achieve the purpose, the invention provides the following scheme:
a hydrogen energy storage power plant system comprising: the system comprises a water electrolysis hydrogen production system, a power generation system, a hydrogen production auxiliary system, a heat recovery system, a heat dissipation system, a refrigeration system, a water supply/supplement system, a control system, a hydrogen storage system and a photovoltaic power generation system;
the electrolytic water hydrogen production system, the power generation system, the hydrogen production auxiliary system, the heat recovery system, the heat dissipation system, the refrigeration system, the water supply/supplement system, the control system and the hydrogen storage system are arranged in the same workshop, and the workshop adopts an explosion-proof roof;
the water electrolysis hydrogen production system adopts a proton exchange membrane electrolytic cell; the electric energy input of the electrolytic hydrogen production system is a grid-connected bus of the photovoltaic power generation system and commercial power; the water electrolysis hydrogen production system converts electric energy into hydrogen, and the hydrogen enters the hydrogen storage system through the hydrogen production auxiliary system;
the hydrogen storage system is connected with the power generation system; the power generation system is used for generating power according to hydrogen and merging the generated electric energy into the bus through the inversion boosting device;
the power generation system, the control room power supply room and the water electrolysis hydrogen production system are isolated by explosion-proof walls;
the heat recovery system, the heat dissipation system, the refrigeration system and the water supply/supplement system are all connected with the water electrolysis hydrogen production system and the power generation system;
the control system is respectively connected with the water electrolysis hydrogen production system and the power generation system.
Optionally, the water electrolysis hydrogen production system comprises: 4 250kW proton exchange membrane electrolytic cells connected in parallel.
Optionally, the power generation system comprises: 6 groups of proton exchange membrane fuel cells connected in parallel.
Optionally, the hydrogen production auxiliary system comprises: a hydrogen separator, a water replenishing pump, a high-pressure water pump, an ion exchange column, a heat exchanger and a water chiller;
the hydrogen separator, the water replenishing pump, the high-pressure water pump, the ion exchange column, the heat exchanger and the water cooler are all arranged in one container.
Optionally, the heat dissipation system comprises: two cooling water towers are connected in parallel.
Optionally, the refrigeration system comprises: a water cooler, a water pump and a connecting pipeline.
Optionally, the control system comprises: the system comprises an upper computer, an ECU main controller, a gas processing PLC, a human-computer interface HMI, a bottom layer sensor and an execution structure.
Optionally, the hydrogen storage system comprises: a hydrogen storage bottle.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the hydrogen energy storage power station system provided by the invention, the whole hydrogen energy storage power station system is divided into 10 parts, and each part is mutually matched, so that a hydrogen energy full-chain production and utilization technology comprising hydrogen production, hydrogen storage, power generation and heat recovery is realized. The key components are isolated by the explosion-proof wall, and meanwhile, the explosion-proof roof and the whole explosion-proof electrical appliance are adopted, so that the range of explosion danger areas is reduced, and the design of a safe and compact layout scheme of the hydrogen energy storage power station is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a hydrogen energy storage power station system provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a hydrogen energy storage power station system, which can reduce the area and cost of the hydrogen energy storage power station system and improve the safety of the hydrogen energy storage power station system.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural diagram of a hydrogen energy storage power station system provided by the present invention, and as shown in fig. 1, the hydrogen energy storage power station system provided by the present invention includes: the system comprises a water electrolysis hydrogen production system, a power generation system, a hydrogen production auxiliary system, a heat recovery system, a heat dissipation system, a refrigeration system, a water supply/supplement system, a control system, a hydrogen storage system and a photovoltaic power generation system;
the electrolytic water hydrogen production system, the power generation system, the hydrogen production auxiliary system, the heat recovery system, the heat dissipation system, the refrigeration system, the water supply/supplement system, the control system and the hydrogen storage system are arranged in the same workshop, and the workshop adopts an explosion-proof roof;
the water electrolysis hydrogen production system adopts a proton exchange membrane electrolytic cell; the electric energy input of the electrolytic hydrogen production system is a grid-connected bus of the photovoltaic power generation system and commercial power; the water electrolysis hydrogen production system converts electric energy into hydrogen, and the hydrogen enters the hydrogen storage system through the hydrogen production auxiliary system;
the hydrogen storage system is connected with the power generation system; the power generation system is used for generating power according to hydrogen and merging the generated electric energy into a bus through the inversion boosting device;
the power generation system, the control room power supply room and the water electrolysis hydrogen production system are isolated by explosion-proof walls;
the heat recovery system, the heat dissipation system, the refrigeration system and the water supply/supplement system are all connected with the water electrolysis hydrogen production system;
the control system is respectively connected with the water electrolysis hydrogen production system and the power generation system.
The water electrolysis hydrogen production system comprises: 4 250kW proton exchange membrane electrolytic cells connected in parallel. Compared with an alkaline electrolytic cell, the PEM electrolytic cell is more miniaturized and has higher efficiency under the same power. The gas production rate of the electrolytic cell of the hydrogen production system is 220Nm 3 The hydrogen output pressure is 3.2 MPa. The working temperature of the electrolytic cell is 65-70 ℃, and the inlet temperature of circulating water entering the electrolytic cell is 60 ℃. The hydrogen purity target is not less than 99.995%. The water used in the hydrogen production system is deionized water or purified water, and the resistivity of the water is more than 15 MOmega-cm. The hydrogen production system adopts solid polymer electrolytic hydrogen production equipment to produce hydrogen, and the rated hydrogen production is 220Nm 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. The hydrogen production system mainly comprises an electrolytic cell, a hydrogen production/oxygen production system, a water system, a gas purification system and a control system.
As a specific example, a single 250kW proton exchange membrane electrolyzer key performance parameters: rated hydrogen production of 55Nm 3 The voltage efficiency of the electrolytic cell is more than or equal to 74% @0.8A/cm 2. The component is the heart of the whole hydrogen production system, and during the working process, water molecules are decomposed into oxygen and H at the anode of the electrolytic cell + ，H + Combined with water molecules to form H3O + And passes through the film to reach the cathode under the action of the electric field, so that hydrogen is generated at the cathode and oxygen is generated at the anode.
The power generation system includes: 6 groups of proton exchange membrane fuel cells connected in parallel. 6 groups of proton exchange membrane fuel cells are connected in parallel, supplied with gas uniformly and assembled in a centralized manner, and are isolated from an electrolytic cell through an explosion-proof wall, so that the whole hydrogen production power generation system, the hydrogen production system, the transformer, the inverter and the main control equipment are assembled in a production workshop, and the operation and maintenance workload and the maintenance cost are reduced.
The power generation system adopts a proton exchange membrane fuel cell to generate power, and the rated generating capacity is 1.2 megawatts. The power generation system mainly comprises subsystems such as a fuel cell, an inverter, water supply/supplement, gas delivery, water recovery, heat recovery and the like. The system design requirements are as follows:
6 groups of fuel cells are respectively connected into a grid-connected converter through a direct current power distribution cabinet, and then the voltage is boosted to 10kV through a double-split booster transformer, as shown in the figure. After the power generation system is boosted to 10kV, the power generation system is connected to a power grid through a 1-time 10kV line, and the length of the newly-built line is about 3.5 km.
The auxiliary hydrogen production system comprises: a hydrogen separator, a water replenishing pump, a high-pressure water pump, an ion exchange column, a heat exchanger and a water chiller;
the hydrogen separator, the water replenishing pump, the high-pressure water pump, the ion exchange column, the heat exchanger and the water cooler are all arranged in one container.
The hydrogen production auxiliary system is responsible for drying and purifying the generated hydrogen to finally obtain the hydrogen with the purity of 99.999 percent. Through assembling above auxiliary system equipment in a container completely, be convenient for transport and overhaul the change, reduce occupation space, mountable hydrogen monitoring devices in the container increases the security simultaneously.
A hydrogen production auxiliary system: hydrogen and oxygen generated by electrolyzing water through the electrolytic cell pass through the primary separator to remove liquid water, and after passing through the secondary separator, gas is cooled through a water cooler, and water vapor is condensed into liquid water which flows back to the primary separator. The hydrogen side secondary separator and the oxygen side secondary separator condense water vapor doped in the hydrogen and the oxygen through the water chiller to improve the purity of the hydrogen and the oxygen, and circulating cooling water needs to be provided for the hydrogen side secondary separator and the oxygen side secondary separator to provide cold energy for the condensation of the water vapor. And the gas separated by the secondary hydrogen side separator enters a gas purification module.
After passing through the gas purification module, the gas passes through a back pressure valve, a check valve and an electromagnetic valve in sequence and is input into the hydrogen storage tank and the oxygen storage tank. Wherein, the secondary separator needs to be provided with a gas bypass to avoid overhigh gas pressure.
Introduction to purification Process
The hydrogen yield of the engineering electrolytic cell is 220Nm 3 At a pressure of up to 3.2MPa, pure water is electrolyzed here into hydrogen and oxygen. The purification system adopts 506HT deoxidation catalyst for deoxidation, adopts 13X molecular sieve as dehydration and drying agent, and is respectively contained in a drying tower A, a drying tower B and a drying tower C. The purification system belongs to automatic on-line regeneration. After the hydrogen enters the purification, deoxidizingThe regeneration is automatically started, and the drying part of the purification equipment is divided into 3 working states: a Z1 state, a Z2 state, and a Z3 state. The three working states are automatically switched to operate in a cycle of 8 hours.
Technological parameters of purification system
The gas throughput of the purification apparatus is 0-220Nm 3 H, the working pressure is 3.5MPa, the working temperature is normal temperature, the high-purity hydrogen with the purity of more than 99.999 percent can be obtained by separating the hydrogen with the purity of more than 99.9 percent through a membrane component, and the performance of the purification device is shown in the table 1:
TABLE 1
| Direct hydrogen absorption rate | ＞90％ |
| System leak rate | ＜1×10-9Pa.m 3 /s |
| Accuracy of temperature control | ±1℃ |
| Continuous throughput of system | ＞260Nm 3 /h |
The heat recovery system specifically includes: circulating water (with higher temperature) after passing through the electrolytic cell flows out of the oxygen side secondary separator, cold fluid on the other side in the heat exchanger is subjected to heat exchange under the driving of the high-pressure circulating pump, and the circulating water enters the electrolytic cell through the ion exchange column after being cooled in the heat exchanger. The cooling water used for cooling the circulating water is heated after passing through the heat exchanger, and is driven by the water pump to flow through the radiator (fin heat exchanger) to transfer heat to the external environment and return to the water tank after being cooled.
The heat dissipation system includes: two cooling water towers are connected in parallel.
The electrolysis process will produce 70 ℃ high temperature water, through reducing high temperature water to low temperature water through closed cooling tower, when considering extreme weather heat dissipation unsatisfied condition summer, increase 45kW and freeze the water machine in order to satisfy the device operation.
When the system runs, the heat dissipation system and the heat recovery system can not run simultaneously, namely when the heat dissipation subsystem runs, the heat recovery subsystem is closed; and when the heat recovery subsystem operates, the heat dissipation subsystem is closed. The heat dissipation subsystem has the main function of measuring and calculating the heat quantity which can be recovered by the heat recovery subsystem.
A heat dissipation system: circulating water (with higher temperature) after passing through the electrolytic cell flows out of the oxygen side primary separator and enters one side of the heat exchanger under the driving of the high-pressure circulating pump; the cold fluid in the water tank is injected into the other side of the heat exchanger through the driving of the cooling water pump, and the two exchange heat. The cold fluid is heated after heat exchange, and the cold fluid is driven by the water pump to flow through the radiator (fin heat exchanger) to transfer heat to the external environment and then returns to the water tank after being cooled.
The refrigeration system includes: a water cooler, a water pump and a connecting pipeline.
(1) Water cooling machine
The water chiller of the refrigeration system provides cold energy for the condensation of water vapor. The refrigeration system needs to reduce the hydrogen and oxygen from 60 c to 20 c.
(2) Water pump
The water pump is used for driving cooling water of the water chiller to circulate so as to cool the secondary separator.
The water supply/supplement subsystem provides reaction raw material water for the electrolytic bath and mainly comprises an oxygen side primary water separator (a gas conveying subsystem), a circulating water pump, a water tank, a heat exchanger (a heat recovery subsystem), an ion exchange column and a water supplement pump.
(1) Water supply/supplement system design performance
1) The water supplied by the water supply/supplement system is deionized water or purified water, and the resistivity of the water is more than 15M omega cm.
2) The water supply system should provide enough water for the electrolytic cell to ensure that the electrolytic hydrogen production is 220Nm 3/h.
3) The water supply system is used for taking away the heat generated by the electrolysis reaction in time.
4) The inlet temperature of the circulating water into the electrolytic cell should be 60 ℃, and the temperature parameter is the boundary condition of the heat dissipation system.
5) The working pressure of the electrolytic cell is 3.2MPa, and the circulating water pump must have pressure resistance, and the maximum pressure resistance is not lower than 3.2 MPa.
(3) Water replenishing pump
Water supplement quantity
The water replenishing pump is the same as the water pump, and the water replenishing amount is determined firstly when the type of the water replenishing pump is selected.
The water replenishing system is used for replenishing water consumed and evaporated by electrolysis in circulating water, and the water replenishing pump is started or stopped according to the liquid level, so that the flow of the water replenishing pump is far larger than the water consumption.
Pressure (c)
The front end of the water replenishing pump is a water tank with normal pressure, and the rear end of the water replenishing pump is connected with a high-pressure water circulation system (more than 3.2MPa), so that the water replenishing pump needs to boost the normal-pressure water to high pressure.
(iii) type selection
The plunger pump is a typical positive displacement hydraulic machine, is driven by a prime mover, converts input mechanical energy into pressure energy of liquid, and then inputs the pressure energy and the flow into a system, is a power source of a hydraulic system, and is widely applied to various industries in industrial production and daily life because the plunger pump can convey liquid under high pressure. Since the make-up water needs to be pressurized, it is considered to select a plunger pump suitable for boosting the pressure.
4) Water tank
The volume of the water tank is matched with the flow of the water replenishing pump. And calculating the water replenishing amount for 12 hours according to the water replenishing quantity which can be guaranteed to be stably provided for the water replenishing system under the condition that no water is added into the water tank.
(3) Water system: the water system provides electrolysis water and cooling water for the whole system. Mainly comprises a water supply subsystem, a water replenishing subsystem and a heat dissipation/heat recovery subsystem:
1. a water supply subsystem: reaction water respectively enters from oxygen side inlets of the three electrolytic tanks, then respectively flows out from an oxygen outlet, passes through an oxygen side primary separator, passes through a circulating water pump, a heat exchanger (heat dissipation) and an ion exchange column, and then enters the electrolytic tanks again from the oxygen side inlets of the electrolytic tanks, so as to form circulation.
2. A water replenishing subsystem: circulating water through the electrolysis trough can reduce along with the reaction, consequently needs the moisturizing, and the moisturizing is through the moisturizing pump, from the normal pressure water tank with deionized water or pure water, supply to the water storage tank of oxygen side one-level separator, through opening of the liquid level monitoring control moisturizing pump of water storage tank.
The control system includes: the system comprises an upper computer, an ECU main controller, a gas processing PLC, a human-computer interface HMI, a bottom layer sensor and an execution structure.
The hydrogen storage system includes: a hydrogen storage bottle. Mainly considering pressurized storage, the total storage capacity is 1MWh, the storage pressure is 20Mpa, and a group of hydrogen storage bottles are configured. And (3) configuring a pressurizing device, wherein the pressurizing capacity reaches 20Mpa, the pressurizing storage device and the electrolysis device realize joint debugging and joint transportation and integrated control, after starting up, the hydrogen production machine and the pressurizing device automatically operate, and after reaching the preset storage capacity, the device automatically shuts down.
The photovoltaic total installation scale in the photovoltaic power generation system is 101.75kW, the photovoltaic total installation scale is respectively composed of a roof 52.25kW and a shed 49.5kW, and a scheme of block power generation and centralized grid connection is adopted. Compared with the economic synthesis through technology. The operation mode adopts a fixed mode, and the whole photovoltaic system is formed by a plurality of photovoltaic power generation matrixes. The polysilicon cell assembly is 550Wp, and the number of the assemblies is 185. The inverters are 50kW in group string type, 1 access point is set, 1 metering grid-connected cabinet is matched, the project plan adopts a self-power-utilization and residual-power grid-connection mode, and the access point is selected in a transformation and distribution substation of a power distribution comprehensive building.
As shown in fig. 1, a grid-connected bus of a photovoltaic power generation system and a mains supply is used as electric energy input of an electrolytic hydrogen production system, the electrolytic hydrogen production system converts the electric energy into hydrogen, the hydrogen enters a hydrogen buffer tank through a hydrogen compressor and finally enters a hydrogen storage tank, the hydrogen storage tank is decompressed, the hydrogen is input into a fuel cell stack and is supplied to a fuel cell for power generation, and finally the electric energy enters an inversion boosting device of the fuel cell system and is merged into a bus to be networked. The function of storing and utilizing electric energy is realized.
The cooling tower takes out the heat of the fuel cell and the electrolytic cell through the external circulating water and the external circulating water pump, and the cooling treatment is carried out through the cooling tower.
And the nitrogen pipeline is connected into an electrolytic cell and a fuel cell pipeline system, and purging is carried out before the equipment is started to remove pipeline impurities.
The invention is considered from two aspects:
(1) from the whole station area consideration
The compact layout scheme of adoption shortens the construction area, arranges electrolysis trough and fuel cell, hydrogen purification system, hydrogen buffer tank, air compressor in a workshop, has shortened the pipeline distance, has improved the operating efficiency of whole station, has reduced running cost and construction cost.
(2) From the viewpoint of safety
Keep apart the main equipment with blast wall, use explosion-proof roof in the workshop, all electrical equipment all use explosion-proof design, have improved the security of whole station. In addition, the main equipment is arranged indoors, so that the pipeline distance and the number of valves can be shortened, and potential safety hazards are reduced. And secondly, the influence of external high temperature or rain and snow weather on the operation of the equipment is reduced, and the service life of the equipment is prolonged.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A hydrogen energy storage power plant system, comprising: the system comprises a water electrolysis hydrogen production system, a power generation system, a hydrogen production auxiliary system, a heat recovery system, a heat dissipation system, a refrigeration system, a water supply/supplement system, a control system, a hydrogen storage system and a photovoltaic power generation system;
the electrolytic water hydrogen production system, the power generation system, the hydrogen production auxiliary system, the heat recovery system, the heat dissipation system, the refrigeration system, the water supply/supplement system, the control system and the hydrogen storage system are arranged in the same workshop, and the workshop adopts an explosion-proof roof;
the water electrolysis hydrogen production system adopts a proton exchange membrane electrolytic cell; the electric energy input of the electrolytic hydrogen production system is a grid-connected bus of the photovoltaic power generation system and commercial power; the water electrolysis hydrogen production system converts electric energy into hydrogen, and the hydrogen enters the hydrogen storage system through the hydrogen production auxiliary system;
the hydrogen storage system is connected with the power generation system; the power generation system is used for generating power according to hydrogen and merging the generated electric energy into a bus through the inversion boosting device;
the power generation system, the control room power supply room and the water electrolysis hydrogen production system are isolated by explosion-proof walls;
the heat recovery system, the heat dissipation system, the refrigeration system and the water supply/supplement system are all connected with the water electrolysis hydrogen production system and the power generation system;
the control system is respectively connected with the water electrolysis hydrogen production system and the power generation system.
2. The hydrogen energy storage power station system of claim 1 wherein the water electrolysis hydrogen production system comprises: 4 250kW proton exchange membrane electrolytic cells connected in parallel.
3. A hydrogen energy storage power plant system according to claim 1, characterized in that said power generation system comprises: 6 groups of proton exchange membrane fuel cells connected in parallel.
4. The hydrogen energy storage power station system of claim 1 wherein the auxiliary hydrogen generation system comprises: a hydrogen separator, a water replenishing pump, a high-pressure water pump, an ion exchange column, a heat exchanger and a water chiller;
the hydrogen separator, the water replenishing pump, the high-pressure water pump, the ion exchange column, the heat exchanger and the water cooler are all arranged in a container.
5. The hydrogen energy storage power station system of claim 1 wherein the heat removal system comprises: two cooling water towers in parallel.
6. The hydrogen energy storage power plant system of claim 1, wherein said refrigeration system comprises: a water cooler, a water pump and a connecting pipeline.
7. A hydrogen energy storage power plant system according to claim 1, characterized in that said control system comprises: the system comprises an upper computer, an ECU main controller, a gas processing PLC, a human-computer interface HMI, a bottom layer sensor and an execution structure.
8. The hydrogen storage power plant system of claim 1, wherein the hydrogen storage system comprises: a hydrogen storage bottle.
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Citations (7)
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| CN215365999U (en) * | 2021-01-06 | 2021-12-31 | 国网安徽省电力有限公司电力科学研究院 | Megawatt power station |
| CN113921873A (en) * | 2021-10-08 | 2022-01-11 | 赵洪山 | Box type hydrogen energy ecological power station |
| CN215580006U (en) * | 2021-05-31 | 2022-01-18 | 国网福建省电力有限公司 | Explosion-proof cabinet of high-efficient pressure release |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10840572B1 (en) * | 2017-06-26 | 2020-11-17 | Denis Luz | Solar hydrogen generation and off-peak storage |
| CN207731142U (en) * | 2018-01-17 | 2018-08-14 | 深圳市凯豪达氢能源有限公司 | A kind of hydrogen explosion protection system device of container-type |
| CN108716614A (en) * | 2018-06-06 | 2018-10-30 | 安徽锦美碳材科技发展有限公司 | A kind of distribution water electrolysis hydrogen production is used for the solution of hydrogen power hydrogen supply |
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| CN215365999U (en) * | 2021-01-06 | 2021-12-31 | 国网安徽省电力有限公司电力科学研究院 | Megawatt power station |
| CN215580006U (en) * | 2021-05-31 | 2022-01-18 | 国网福建省电力有限公司 | Explosion-proof cabinet of high-efficient pressure release |
| CN113921873A (en) * | 2021-10-08 | 2022-01-11 | 赵洪山 | Box type hydrogen energy ecological power station |
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