3039 results about "Hydrogen system" patented technology

The invention discloses a photovoltaic off-grid hydrogen production system and a control method thereof, and the method comprises the following steps: obtaining original data of an environment sensor, carrying out synchronous collection through a distributed data collection system, and obtaining standardized environment data through an STL algorithm, Z-score standardization and wavelet noise reduction processing; carrying out photovoltaic output power prediction by adopting an integrated learning method, and carrying out MPPT control optimization; an electrolytic cell dynamic model is constructed, multi-objective optimization and energy storage system state estimation are carried out, and energy storage optimization scheduling is achieved; and finally, realizing overall optimization of the system through a multi-time-scale coordination control framework. The system operation efficiency is improved, the system reliability is enhanced, the operation cost is reduced, and the system is particularly suitable for an off-grid hydrogen production scene with large photovoltaic energy volatility.

The invention discloses a non-energy-storage off-grid photovoltaic hydrogen production system and a control method. The control method comprises five steps of environmental data acquisition and preprocessing, photovoltaic cell output power estimation, electrolytic cell power management, converter control parameter optimization and system performance evaluation and adaptive adjustment. The method comprises the following steps: firstly, processing environmental data by adopting an isolation forest algorithm, Kriging interpolation and an empirical mode decomposition method, and extracting time sequence features; and then combining with the estimated photovoltaic output power. And then the genetic algorithm and dynamic programming are utilized to realize electrolytic cell power optimization distribution. And then converter control parameters are optimized through subspace identification, pole assignment and a hybrid optimization algorithm. And finally, system performance evaluation and adaptive adjustment are realized by adopting a sliding time window method, singular spectrum analysis and a fuzzy prediction control method. The technical problems of the energy-storage-free photovoltaic hydrogen production system in the aspects of environmental data processing, power estimation, energy management, control optimization and the like are solved, and the operation efficiency and reliability of the system are improved.

The invention provides a fuel cell hydrogen supply system and a hydrogen supply method. The fuel cell hydrogen supply system comprises a liquid hydrogen storage tank, a first gas path connected between the liquid hydrogen storage tank and a fuel cell, a second gas path connected in parallel with the first gas path, and a control assembly, a gasification device is arranged on the first gas path, and a gas storage bottle is arranged on the second gas path; the control assembly comprises a controller and a plurality of control valves; the controller controls the plurality of control valves and can respectively control the connection or disconnection of the first gas path and the second gas path, so that the liquid hydrogen in the liquid hydrogen storage tank is conveyed to the fuel cell through the first gas path, and when the pressure of the gaseous hydrogen in the liquid hydrogen storage tank exceeds a first preset pressure threshold value, the gaseous hydrogen is stored in the gas storage bottle through the second gas path; and hydrogen can be supplied to the fuel cell through the second gas path. According to the fuel cell hydrogen supply system, gaseous hydrogen exceeding the first preset pressure threshold in the liquid hydrogen storage tank can be recycled, so that the release of the gaseous hydrogen to the outside is reduced, and the waste of resources is reduced.

The invention discloses an acoustic emission intelligent detection method and system for hydrogen-induced damage of a high-pressure hydrogen system, and the method comprises the steps: collecting a system operation signal through an acoustic emission sensor, carrying out the combined preprocessing of variational mode decomposition and adaptive wavelet threshold noise reduction, restraining noise, constructing a lightweight MobileNet-TCN network, carrying out the deep feature extraction, and carrying out the detection of the hydrogen-induced damage of the high-pressure hydrogen system. GRU and a three-dimensional point cloud technology are fused to realize submillimeter-level positioning of an acoustic emission source, a big data damage case library is associated based on an acoustic emission parameter accumulation model, dynamic assessment and early warning of damage risks are realized, multi-physics field monitoring data are combined, damage classification is optimized through a GCNs (Graph Convolutional Networks), and the above processes are systematically integrated. And full-chain intelligent processing from signal acquisition to risk early warning is completed. The scheme has the advantages of strong anti-interference capability, submillimeter positioning precision, high edge end reasoning efficiency, high damage classification accuracy and dynamic early warning capability, and is suitable for safety monitoring of hydrogen energy storage and transportation equipment.

The invention discloses an electricity-hydrogen combined scheduling method and system for large-scale renewable energy source hydrogen production. The method comprises the steps of defining projects, equipment, units and systems, configuring topological relations, setting working conditions, grading loads and accessing data. Adjusting, optimizing and correcting ultra-short time power generation prediction, predicting hydrogen production allowance and identifying a current working condition; pre-judging future working conditions, power supply quantity and hydrogen production direct-current power; simulating balance, and solving an optimal scheduling strategy by multiple targets; and decomposing the scheduling strategy and issuing an asynchronous control instruction. According to the invention, the thought of mutual assistance of source and load is adopted, energy balance and hydrogen production balance are jointly dispatched, the purposes of power-hydrogen coupling as a main part, energy storage stabilization as an auxiliary part and off-grid or grid-connected non-grid are achieved, off-grid stability and 100% green power consumption of a renewable energy hydrogen production system are achieved, the policy requirements of green hydrogen production are met, the dependence on a large power grid is fundamentally reduced, and the green hydrogen production efficiency is improved. The electricity cost is reduced; and meanwhile, the support dependence on energy storage is reduced, and the use cost of energy storage is reduced.

The invention relates to the technical field of hydrogen production, in particular to a micro-grid hydrogen production system based on dynamic optimization control and a multi-mode energy scheduling method. Comprising a renewable energy power generation unit which comprises at least two distributed power supplies with different power generation characteristics; the multi-stage hydrogen production device is configured to receive the electric energy output of the renewable energy power generation unit and perform proton exchange membrane water electrolysis hydrogen production; the hybrid energy storage system comprises a super capacitor bank and a lithium ion battery pack which are connected in parallel to the direct current bus through a bidirectional DC / DC converter; the dynamic optimization controller is internally provided with a multi-time-scale coordination algorithm and is used for acquiring meteorological prediction data, load demand data and an energy storage SOC state in real time; the multi-mode scheduling module comprises three working modes including an island operation mode, a grid-connected operation mode and an emergency standby mode; according to the scheme, hydrogen production economy, equipment durability and power supply reliability can be considered at the same time.

The invention relates to an optimization method of an alkaline water electrolysis hydrogen production system based on multi-parameter cooperative control. The method comprises the following steps: acquiring real-time power and historical output data of renewable energy sources, environmental parameters and operation data of an electrolytic cell, and preprocessing the real-time power and historical output data, environmental parameters and operation data of the electrolytic cell; constructing a fusion renewable energy fluctuation prediction model, and inputting historical output data, environmental parameters and electrolytic cell operation data into the model to predict renewable energy fluctuation characteristics; establishing a wind-light output prediction model, and determining an optimal current density interval based on the real-time power of the renewable energy and the wind-light output prediction model; correcting the real-time electrolyte concentration by adopting a conductivity-pH dual channel, constructing a concentration-current two-dimensional compensation model, and inputting the corrected real-time electrolyte concentration into the model to obtain a target electrolyte concentration; and dynamically adjusting related parameters of the hydrogen production system, calculating a self-adaptive threshold value of the system, determining a grading response threshold value based on the self-adaptive threshold value, and controlling the hydrogen production system to operate. And high-efficiency hydrogen production and stable operation of the system are realized.

The invention provides a coordination control method for a photovoltaic off-grid hydrogen production system, which comprises the following steps of: acquiring voltage and current time domain signals of a photovoltaic array, constructing an impedance frequency characteristic mapping model through tensor decomposition and a radial basis function network, and calculating converter control parameters; based on converter control parameters and environment data, temperature-sensing-free self-correction photovoltaic characteristic prediction is achieved through electrical parameter indirect temperature estimation, and an MPPT reference track and a power prediction track are generated; multi-time-scale data coordination processing of millisecond-level electrical control, second-level pressure regulation and minute-level temperature optimization is executed, potential conflicts are solved, and an execution instruction set is generated; and generating and issuing a system comprehensive control instruction by adopting a double-layer deep reinforcement learning network. According to the method, the system efficiency and stability are improved, and the performance is excellent especially under the illumination fluctuation working condition.

The invention discloses a process system for separating and purifying helium from helium-containing natural gas, which comprises a pretreatment system, a membrane separation system, a VPSA decarburization system, a TSA refined removal system, a first pressurization system, a primary membrane separation system, a second pressurization system, a secondary membrane separation system, a third pressurization system, a PSA purification system and an alloy dehydrogenation system which are sequentially connected step by step through pipelines, the fourth pressurization system is arranged between the PSA purification system and the TSA refined removal system; the impermeable gas discharged by the membrane separation system is fed into a natural gas pipeline network; low-pressure desorbed gas discharged by the VPSA decarburization system and desorbed gas discharged by the TSA fine desorption system are used for being fed into a fuel pipe network; and impermeable gas discharged by the first-stage membrane separation system and desorbed gas discharged by the PSA purification system are used for refluxing to the TSA fine removal system. According to the process system, helium can be directly separated and purified from the helium-containing natural gas which is exploited from a gas field and pretreated, the helium recovery rate is high, the process flow is simple, and the energy consumption is low.

The invention relates to the technical field of hydrogen energy, and discloses an auxiliary-machine-free solid oxide electrolytic hydrogen production system and an auxiliary coal electricity deep adjustment method, the hydrogen production system comprises an SOE heat box system for electrolytic hydrogen production, a hydrogen circulation subsystem and a hydrogen storage subsystem; the ejector is driven by external heat source steam, part of hydrogen at an outlet of the SOE heat box system is ejected to a low-pressure suction inlet of the ejector through the hydrogen circulation subsystem, and formed reducing mixed gas of steam and hydrogen enters a cathode inlet of the SOE heat box system. The system is driven by an external heat source and operates in an internal stack heating mode, so that the power consumption of the electrolytic hydrogen production system is reduced; by adopting the modes of external material supply, cathode ejector material self-circulation and multi-stream heat exchange, a complex cold and hot auxiliary machine of a traditional solid oxide electrolytic hydrogen production system is omitted, the structure is simple, and the system compactness is greatly improved; electric power-steam-air-condensed water flow coupling is established with a coal-fired power plant, and efficient, flexible and deep peak shaving is adjusted in combination with steam extraction multi-stage adjustment.

The embodiment of the invention relates to a modular integrated photocatalytic hydrogen production system and a photocatalytic hydrogen production method thereof, and belongs to the technical field of new energy photocatalytic hydrogen production. The modularized integrated photocatalytic hydrogen production system comprises an integrated rack, a plurality of photocatalytic hydrogen production reaction devices are arranged in the integrated rack, and the photocatalytic hydrogen production reaction devices are connected with a monitoring control device. The modularized integrated photocatalytic hydrogen production system provided by the embodiment of the invention not only integrates the photocatalytic hydrogen production reactor, efficient utilization of light emitted by the light source and timely recycling of volatile reaction liquid, but also adopts a modularized structure to integrate a plurality of photocatalytic hydrogen production reaction devices, pipelines thereof and a control system; the whole device is simple in structure, convenient to machine, convenient to use and beneficial to equipment management and maintenance, the hydrogen production scale can be conveniently expanded according to needs, and application and popularization of the photocatalytic hydrogen production technology are facilitated.

The device is mainly used in the technical field of electrolytic hydrogen production. The invention discloses a water electrolysis hydrogen production system based on a proton exchange membrane electrolytic cell. The water electrolysis hydrogen production system comprises an electrolysis unit, a water circulation unit and a gas-liquid separation unit, the electrolysis unit is used for carrying out electrolysis treatment on the liquid water to obtain hydrogen, oxygen and gas-liquid mixed water; the gas-liquid separation unit comprises a primary separation module and a secondary separation module; the primary separation module is used for carrying out separation treatment on the gas-liquid mixed state water to obtain separated liquid water; the second-stage separation module is used for performing gas release treatment on the separated liquid water to obtain the liquid water after gas release; and the water circulation unit is used for transmitting liquid water after gas release to the electrolysis unit. According to the technical scheme, the release speed of the gas dissolved in the liquid water can be increased, the content of the gas in the liquid water is reduced, and therefore the safety risk of the water electrolysis hydrogen production system in the hydrogen production process is reduced.

The invention discloses a porous ejector, a use method thereof and a fuel cell system, and belongs to the technical field of fuel cells. Comprising a shell, a cavity is formed in the shell, and the cavity comprises a suction cavity, a mixing chamber, a second flow stabilizing chamber and a diffusion section which are sequentially arranged; a nozzle body is mounted in the suction cavity and is used for accelerating and depressurizing the driving fluid and spraying the accelerated and depressurized driving fluid into the suction cavity to form a negative pressure area; an ejection opening is formed in the side wall, corresponding to the suction cavity, of the shell and used for introducing an ejection fluid, and the ejection fluid and the driving fluid subjected to acceleration and pressure reduction are mixed in the mixing chamber; a nozzle assembly is arranged at the end, close to the mixing chamber, of the nozzle body and comprises at least one nozzle, and driving fluid is accelerated through a hole channel of the nozzle. The invention provides a porous ejector, a use method thereof and a fuel cell system, and solves the technical problems of low fuel injection efficiency and insufficient energy utilization of a single-hole ejector used in a traditional hydrogen supply system.

The invention discloses a hybrid hydrogen production system coupled with photovoltaic renewable energy and an optimal configuration method, and relates to the technical field of new energy utilization and energy storage control, and the hybrid hydrogen production system comprises a photovoltaic power generation unit, an alkaline water electrolytic tank unit, a proton exchange membrane electrolytic tank unit, a hydrogen storage unit, a control unit and the like. Photovoltaic electric energy is directly supplied to the two types of electrolytic cell stacks through the direct current bus, a traditional DC-DC power converter is omitted, and loss in the energy transmission process is reduced; and through a dynamic electrolytic cell switching algorithm configured by the control unit, the input proportion and the number of operation units of the two stacks are changed and adjusted in real time, and the quick response capability and the long-term stability are both considered. The system can stably produce hydrogen under the condition of renewable energy fluctuation, can dynamically adapt to input power change, can realize maximum power point tracking control on the premise of not using extra power conversion equipment, and remarkably reduces initial investment cost and operation energy consumption while ensuring hydrogen production efficiency.

The invention discloses a chassis arrangement structure of a hydrogen fuel cell tractor. The chassis arrangement structure comprises a frame, a bottle rack, a fuel cell radiator, a high-pressure accessory and a plurality of hydrogen conveying bottles, the frame is sequentially provided with a cab position, a gas cylinder position and a cargo compartment position in the longitudinal direction. The cylinder rack is arranged at the gas cylinder position and located on the upper end face of the frame, and a mounting end is arranged on one side of the frame in the transverse direction; the plurality of hydrogen storage bottles are mounted on the bottle rack and are sequentially arranged in the vertical direction, and the hydrogen storage bottles are arranged in the width direction of the frame; the fuel cell radiator comprises a refrigeration main body and a cooling fluid pipeline, the refrigeration main body is mounted at the mounting end, and the cooling fluid pipeline is connected with the refrigeration main body; and the high-pressure accessory is mounted on one side of the frame in the transverse direction and avoids the bottle rack, the hydrogen storage bottle, the refrigeration main body and the cooling fluid pipeline. According to the scheme, the length of the hydrogen storage system in the whole vehicle driving direction is greatly reduced, the main hanging gap is increased, the adaptation rate of a trailer is increased, the space utilization rate of a frame is increased, and the maintenance convenience of high-pressure accessories is improved.

A water electrolysis hydrogen production system, and a method and apparatus for controlling gas purity in a water electrolysis hydrogen production process, relating to the technical field of electrolytic hydrogen production. The water electrolysis hydrogen production system comprises an electrolytic cell, a hydrogen gas-liquid separation unit, and an oxygen gas-liquid separation unit. A hydrogen side gas outlet of the electrolytic cell is connected to the hydrogen gas-liquid separation unit, and an oxygen side gas outlet of the electrolytic cell is connected to the oxygen gas-liquid separation unit. A liquid outlet of the hydrogen gas-liquid separation unit is connected to a first pipeline; a liquid outlet of the oxygen gas-liquid separation unit is connected to a second pipeline; the first pipeline and the second pipeline are converged and then connected to one end of an alkaline liquor backflow main pipeline; and the other end of the alkaline liquor backflow main pipeline is connected to an oxygen side pipeline and a hydrogen side pipeline. The hydrogen side pipeline is connected to a hydrogen side alkaline liquor flow channel inlet of the electrolytic cell, and the oxygen side pipeline is connected to an oxygen side alkaline liquor flow channel inlet of the electrolytic cell. The hydrogen side pipeline and the oxygen side pipeline are each provided with a flow measurement assembly and a flow adjustment assembly. The flows at the hydrogen side inlet and the oxygen side inlet of the electrolytic cell are respectively controlled, and the concentration of the alkaline liquor is kept consistent at the two sides.

The invention discloses a multi-electrolytic cell collaborative optimization control method suitable for wide-range power fluctuation, and belongs to the technical field of new energy. According to the method, an optimization framework is adopted for collaborative optimization of hydrogen production power supply power, electrolytic cell power, electric energy storage power and electrolytic cell time sequence production state, a finite time domain rolling solving method is adopted in optimization, the rolling time domain length is hour level, the sampling time is minute level or hour level, an optimization objective function and a constraint model are established respectively, and the optimization objective function and the constraint model are optimized. And solving the optimization model by adopting a mathematical programming or heuristic algorithm to obtain the operation power of each device of the multi-electrolytic cell hydrogen production system and the electrolytic cell state. According to the method, under the wide-range power fluctuation working condition, battery energy storage weakening of frequent starting and stopping of the electrolytic cell is achieved, under the narrow-range power fluctuation working condition, battery energy storage is achieved, it is guaranteed that the electrolytic hydrogen production system operates at the optimal efficiency, and maximum energy utilization and efficient operation of the system are guaranteed; and a new method is provided for collaborative optimization control of the multi-electrolytic-bath hydrogen production system.

Herein discussed is a hydrogen production system comprising a first reactor zone and a second reactor zone, wherein both reactor zones comprise an ionically conducting membrane, wherein the first zone is capable of reforming a hydrocarbon electrochemically and the second zone is capable of performing water gas shift reactions electrochemically, wherein the electrochemical reforming reactions involve the exchange of an ion through the membrane to oxidize the hydrocarbon and wherein electrochemical water gas shift reactions involve the exchange of an ion through the membrane and include forward water gas shift reactions, or reverse water gas shift reactions, or both. In an embodiment, the membrane is mixed conducting. In an embodiment, the membrane comprises an electronically conducting phase and an ionically conducting phase.

The invention provides a solid hydrogen storage thermal management system and method, and relates to the technical field of thermal management, and the system comprises a solid hydrogen storage module, a heating liquid storage module, a heat exchanger and a cooling module. The solid hydrogen storage module is composed of a plurality of solid hydrogen storage units connected in parallel, a first control valve and a second control valve. The heating liquid storage module comprises a liquid storage tank and a heater and is communicated with each solid hydrogen storage unit; and the cooling module comprises a water chilling unit and is used for cooling the medium flowing out of the liquid storage tank during hydrogen filling. And in the hydrogen charging and discharging operation, a control valve of the target solid hydrogen storage unit is opened, so that the target solid hydrogen storage unit, the heating liquid storage module and the heat exchanger form a communication loop. The heater heats the heat exchange medium to a first temperature range required by hydrogen desorption, and the water chilling unit cools the heat exchange medium to a second temperature range during hydrogen charging. The temperature of the solid hydrogen storage system can be effectively controlled in the hydrogen charging and discharging process.

The invention relates to a green hydrogen grid-connected optimization method and a green hydrogen micro-grid system. The method comprises the following steps: S1, acquiring a generated power curve of a renewable energy source sub-module; s2, adopting an MPC control algorithm to control power generation and energy storage power in the green hydrogen micro-grid system so as to track a power generation power curve of the renewable energy source sub-module, and obtaining an optimal total power curve of the electrolytic cell; s3, constructing an electrolytic cell control objective function; obtaining an initial power distribution value of each sub-electrolytic cell; inputting the optimal total power curve of the electrolytic cell and the initial power distribution value of each sub-electrolytic cell into an electrolytic cell control objective function to obtain the optimal distribution power of each sub-electrolytic cell; and S4, adjusting the power of the sub-electrolytic cell by using the optimal distribution power of the sub-electrolytic cell. According to the method, the influence of the multi-electrolytic cell array on the overall operation efficiency of the micro-grid system combined with the green hydrogen system is comprehensively considered, the power distribution reasonability of the whole system is improved, and the energy utilization rate and the economical efficiency are improved.

The invention discloses a water electrolysis hydrogen production quick starting method and device, and the method comprises the steps: after a water electrolysis hydrogen production system is started, a make-up pump supplements water into an oxygen separator to an initial liquid level; obtaining pure water temperature of a water outlet of the electrolytic cell; pure water is controlled to circulate according to a small circulation path, and a heater is controlled to heat the pure water and then the pure water enters the electrolytic bath; if the temperature of the pure water is greater than a starting temperature threshold value, electrifying the electrolytic bath; and if the temperature of the pure water is larger than the operating temperature threshold value, the pure water is controlled to circulate according to a large circulation path, a make-up pump supplements water into an oxygen separator to a liquid level range corresponding to the temperature of the pure water, and the pure water enters the electrolytic bath after flowing through a radiator to be cooled. By connecting the heater and the radiator in parallel and combining liquid level control in the oxygen separator, the flowing path of pure water is divided into a large circulation path and a small circulation path, the specific circulation path is determined according to the temperature of the pure water, the temperature of the pure water can be rapidly increased to the temperature needed by reaction of the electrolytic bath, and the starting time of the water electrolysis hydrogen production system is shortened.

The invention provides a water electrolysis hydrogen production system and a control method thereof.The water electrolysis hydrogen production system comprises a water tank, a heat exchanger, an electrolytic bath and a hydrogen-water separator which are sequentially connected through a pipeline, and further comprises a water quality optimization branch, a water inlet end and a water outlet end of the water quality optimization branch communicate with the water tank; the system further comprises a branch variable frequency pump and a resin tank; the first drainage valve is arranged on a drainage pipeline communicated with the drainage port of the water tank; an inlet conductometer and an anode thermometer to detect a first real-time conductivity and real-time temperature of liquid entering the anode input end of the electrolytic cell; the outlet conductivity meter is used for detecting the second real-time conductivity of fluid flowing out of the oxygen output end of the electrolytic bath, and controlling the operation of the branch variable frequency pump and the opening and closing of the drain valve according to the first real-time conductivity, the real-time temperature and the second real-time conductivity; the problem that the service life of an electrolytic cell is short due to the water quality problem of a water electrolysis hydrogen production system in the prior art is solved.

The invention relates to the technical field of gas purification, in particular to a novel start-up method for a PSA (Pressure Swing Adsorption) hydrogen extraction device, which comprises the following steps: on the basis of the working environment of the PSA hydrogen extraction device, checking before start-up is carried out, nitrogen replacement is carried out, the oxygen content of a hydrogen extraction system is controlled within a preset range, and the pressure of the hydrogen extraction system is reduced to normal pressure; the difference between the current environment data and the standard environment data is analyzed, the valve opening degree and the adsorption pressure are adjusted, the equipment operation parameters are optimized to meet the current environment conditions, and an environment parameter adjusting instruction is obtained. By collecting and analyzing the current environmental data, dynamically adjusting the adsorption pressure and the valve opening and connecting the gas quality monitor to collect and analyze the hydrogen purity in real time, the concentration change of impure substances can be found in time, the adsorption time is optimized according to the data, and it is ensured that the hydrogen purity continuously reaches the high standard; and through continuous monitoring and quality verification of the hydrogen purity of the product, the consistency and reliability of the hydrogen product are guaranteed.

The invention discloses a wind and light off-grid hydrogen production two-stage power optimization method considering reserved energy of energy storage, and belongs to the technical field of wind and light off-grid hydrogen production system power optimization, and the technical scheme is that the method comprises the following steps: S1, establishing a wind and light off-grid hydrogen production system mathematical model; s2, inputting minute-level wind and light historical data; s3, formulating a power distribution rule considering deep coupling of an electrolytic bath operation condition and energy storage preparation energy in a first operation stage, and determining hydrogen production power and hybrid energy storage initial distribution power; and S4, in the second operation stage, with the minimum unit hydrogen production cost and the minimum average charge and discharge depth of the storage battery as targets, the hybrid energy storage power is optimized by adopting an improved multi-target particle swarm algorithm. The method has the beneficial effects that the hydrogen production stability and the energy storage and power supply capacity can be improved, and the wind and light abandoning rate and the unit hydrogen production cost can be reduced.

The invention discloses a multi-hydrogen-storage-tank solid hydrogen storage system based on temperature control, and relates to the technical field of hydrogen energy storage, and the key points of the technical scheme are that the system comprises a plurality of hydrogen storage tanks, each hydrogen storage tank adopts different types of alloy hydrogen storage materials, each hydrogen storage tank is provided with an independent temperature control system, and the temperature is adjusted according to the types of the hydrogen storage materials; therefore, the hydrogen storage efficiency is optimized. The system can accelerate the hydrogen storage rate and improve the storage density through temperature control, the heat exchange device is arranged to improve the heat energy management efficiency, and accurate temperature control and cycle counting functions are achieved. The service life of the hydrogen storage material can be effectively prolonged, performance degradation is reduced, and the long-term stability of a hydrogen storage system is improved.

The invention provides a fault diagnosis method and system for a water electrolysis hydrogen production system based on a graph neural network, and belongs to the technical field of water electrolysis hydrogen production, and the method comprises the steps: obtaining key operation parameters of the water electrolysis hydrogen production system; constructing a time-varying dynamic adjacency matrix based on the key operation parameters, wherein the time-varying dynamic adjacency matrix is obtained by weighting and fusing physical topological structure data and multivariate time sequence data through arbitration parameters; inputting the multivariate time sequence data into a time feature extraction module, and extracting time dependent features; inputting the dynamic adjacency matrix into spatial feature extraction module spatial dependency features based on the time dependency features; fusing the time dependency feature and the spatial dependency feature by adopting a time-space gating fusion mechanism to obtain a fused spatial-temporal feature; and a fault classification module is adopted to identify whether the water electrolysis hydrogen production system has a fault and a fault type based on the fusion features. The diagnosis method is high in accuracy and fast in response.

The invention discloses a photovoltaic photo-thermal coupling hydrogen production system control method for a hydrogen-burning heavy truck traffic network. The method comprises the following steps: S01, collecting operation data of a photovoltaic array, an electrolytic cell and a hydrogen storage tank; s02, based on a model prediction control algorithm, establishing a multi-objective optimization model containing an objective function and constraint conditions; s03, merging the sub-objective functions into a comprehensive objective function through a linear weighting method; s04, applying constraint conditions; S05, performing rolling optimization calculation by adopting a model prediction control algorithm; s06, outputting an optimal control variable; s07, adjusting corresponding parameters in the system; s08, monitoring the running state of the system; s09, whether the system meets constraint conditions is judged, according to the control method, through multi-target collaborative optimization and precise constraint control, the performance, efficiency, economical efficiency and safety of the photovoltaic photo-thermal coupling hydrogen production system can be remarkably improved, and clean, efficient and stable hydrogen energy supply is provided for a hydrogen combustion heavy truck traffic network.

The invention provides a hydrogen storage system control method and device, electronic equipment and a vehicle. The hydrogen storage system control method comprises the steps that gas leakage detection is conducted on a hydrogen pipeline of a vehicle-mounted hydrogen storage system; according to the method, the passage between the target pipeline with the gas leakage fault and the hydrogen source is controlled to be cut off instead of closing the whole hydrogen storage system, so that the hydrogen storage system can continue to work through other pipelines, the reliability of the vehicle-mounted hydrogen storage system is improved, the stability of the hydrogen fuel cell vehicle is guaranteed, and the driving experience is improved.

The invention discloses a water electrolysis hydrogen production system life monitoring method and system, and the method comprises the steps: collecting the monitoring data of a target part in a system, and collecting the voltage information of an electrolytic cell in the system; calculating the loss rate of the target component according to the monitoring data of the target component; according to the loss rate of the target component and the voltage information of the electrolytic cell, calculating operation data of the target component at the end of life of the system; and controlling the current of the electrolytic bath according to the operation data of the target component at the end of life of the system and the priority mode of the system. Thus, full life cycle monitoring and life prediction are performed on the water electrolysis hydrogen production system, the service life and the safety coefficient of the water electrolysis hydrogen production system are improved, and safe operation of the system is promoted.

The invention discloses an electrolytic hydrogen production system and method for deeply reducing the hydrogen content in oxygen. Comprising an alkaline electrolytic bath, an oxygen side gas-liquid separator, a hydrogen side gas-liquid separator, an alkaline liquor circulating pump, a first gas-liquid separator additionally arranged on the front side of the oxygen side gas-liquid separator, and a hydrogen-in-oxygen deep separation device for deeply removing hydrogen in an oxygen side gas-phase product, the first gas-liquid separator is additionally arranged in the oxygen-side gas-liquid separation system, so that a deep separation device capable of purifying and dehydrogenating the oxygen-side gas-phase product can be realized, and when the hydrogen content in oxygen at the gas-phase outlet of the oxygen-side gas-liquid separator is relatively high, the hydrogen-in-oxygen deep separation device is started to deeply remove hydrogen in the oxygen-side gas-liquid separation system, so that the hydrogen content in the oxygen-side gas-liquid separation system is greatly reduced. And the hydrogen content in oxygen in the water electrolysis hydrogen production system is reduced, and the safety of the system is improved.