94 results about "Solar hydrogen" patented technology

The present invention relates to a system, apparatus, and method for the dual-purpose functionality of capturing carbon dioxide (CO2) from atmospheric and flue gas sources and concurrently generating electrical energy. More specifically, this patent application focuses exclusively on the non-ionized hydrogen gas turbine variant of the apparatuses and methods for capturing carbon dioxide and electrical energy generating system invention. The invention embodies an integrated system designed for the efficient capture of CO2 and simultaneous production of clean electricity. To simultaneously generate electric power at maximum efficiency and capture carbon dioxide, the present invention comprises different integrated processes, integrated systems, and techniques. The present system comprises; a non-ionized hydrogen gas turbine system unit, a carbon dioxide capturing system unit, a hybrid solar Hydrogen-Oxygen gas generator system system unit and waste heat recovery system unit. Moreover, the system comprises waste-heat-based carbon dioxide absorption and waste-heat-based regeneration sub-units to power carbon dioxide capturing parts by waste heat. All the systems of units are developed, integrated, hybrid, and co-functionally working to simultaneously enhance both CO2 capture efficiency and electricity generation. Through these integrated processes, systems, and techniques, the invention aims to generate and maximize clean electrical power output while effectively capture CO2 and reducing CO2 emission impacts on the environment with a dual solution approach. The invention further includes various alternative embodiments, and invention versions for versatile application in CO2 capture and energy production fields.

The invention provides a wind-solar hydrogen production and ammonia synthesis system and a configuration method thereof, electronic equipment and a storage medium. The wind and light hydrogen production and ammonia synthesis system comprises a wind and light hydrogen production subsystem, an ammonia synthesis subsystem and a coordination controller which are relatively independent, the ammonia synthesis subsystem comprises a hydrogen storage tank, the hydrogen storage tank is connected with the wind and light hydrogen production subsystem, and the configuration method of the wind and light hydrogen production and ammonia synthesis system can be executed by the coordination controller. The configuration method of the wind-solar hydrogen production ammonia synthesis system comprises the following steps: firstly, determining capacity configuration parameters of a wind-solar hydrogen production subsystem by taking the minimum leveling hydrogen production cost as a target; and determining the capacity configuration parameters of the ammonia synthesis subsystem based on the capacity configuration parameters of the wind-solar hydrogen production subsystem by taking the maximization of the wind-solar absorption rate, the minimization of the total cost of the system and the minimization of the operation cost of the system as targets. The wind and light hydrogen production subsystem and the ammonia synthesis subsystem are subjected to two-stage decoupling type system configuration, and stable operation of the ammonia synthesis process is ensured while efficient utilization of green electricity is achieved.

The invention relates to the technical field of electric energy storage systems, in particular to an offshore wind-solar hydrogen storage ammonia-alcohol-based constructed network control system and a broadband oscillation prevention and control method. Comprising an offshore hydrogen-ammonia-alcohol base, an offshore wind power base, an offshore photovoltaic base, an inverter station, an offshore wind-light base energy storage power station, a booster station, a network-forming type energy storage phase modulation power station and a broadband oscillation control and prevention device, so that the network-forming type energy storage control research of the offshore wind-light hydrogen-ammonia-alcohol multi-energy complementary base can be carried out under low-short-circuit-ratio access and isolated network operation. Voltage, frequency and short-circuit capacity adjustment and inertia supporting are achieved, oscillation prevention and control can be carried out, and the purposes of power grid supporting optimization adjustment and oscillation treatment are achieved; meanwhile, multi-energy complementation is achieved, the energy utilization rate is increased, hydrogen ammonia alcohol can be prepared through green energy, and carbon emission is reduced. Therefore, the problems of poor frequency stability, weak voltage supporting capability, serious weak power grid oscillation and the like in the prior art are solved.

The invention discloses a capacity configuration optimization method for preparing methanol by coupling wind-solar hydrogen production with biomass gasification, belongs to the field of methanol preparation, and develops a comprehensive optimization framework to evaluate the technical economic feasibility of renewable methanol production. According to the framework, renewable energy power generation, an energy storage technology, hydrogen production through water electrolysis and methanol synthesis are integrated together, so that a production system with cost effectiveness is constructed. And establishing an optimization model to determine the optimal investment and operation strategy of green methanol production. According to the model, investment and operation decisions of a plurality of system components are considered, and a series of decision variables are set. Through the solution of the optimization model, the problem of insufficient economic evaluation and comparison technology of synthesizing methanol from renewable energy sources is solved, a scientific basis is provided for a project in planning, design and decision-making stages, and the development of the field of synthesizing methanol from renewable energy sources is promoted.

The invention discloses a hydrogen storage and transportation system under a wind-solar hydrogen production project and a control method. The hydrogen storage and transportation system at least comprises a hydrogen flowing pipeline and a water flowing pipeline, the hydrogen flowing pipeline at least comprises a first compressor, a low-pressure hydrogen storage container, a third compressor and a second heat exchanger which are connected in sequence; the first compressor is further sequentially connected with a second compressor, a high-pressure hydrogen storage tank, an eighth valve connected with the pressure reducing valve in parallel and a third compressor; the second compressor, the high-pressure hydrogen storage tank and the low-pressure hydrogen storage container are connected in parallel; the high-pressure hydrogen storage tank is connected with the pressure reducing valve through a ninth valve connected with the third compressor in parallel; the first compressor pressure is smaller than the third compressor pressure and smaller than the second compressor pressure; the water flow pipeline at least comprises a first heat exchanger, a first water pump and a second water pump which are sequentially arranged in the water flow direction. The second water pump is in fluid communication with the second heat exchanger; the first heat exchanger is arranged on the cooling water pipeline corresponding to the compressor. The multi-aspect requirements of stable output, efficient storage, energy conservation, environmental protection and the like can be met.

The invention discloses an optimal configuration method and device for a wind-solar hydrogen production system and a storage medium, and belongs to the technical field of new energy system coupling and optimizing.The method comprises the steps that basic parameters of a target area are collected, and a wind-solar hydrogen production system optimization model is constructed based on the basic parameters; and with the minimum annual operation cost of the system as a target, constructing a target function and a constraint condition of the wind-solar hydrogen production system optimization model, and based on the target function and the constraint condition, solving by a solver to obtain a capacity configuration scheme of each unit in the wind-solar hydrogen production system optimization model. According to the invention, the utilization rate of wind and light resources is improved while the power consumption of the load is met, the system operation cost is minimized, and the fluctuation problem of single energy supply can be effectively solved.

The invention discloses a multi-objective hierarchical rolling optimization scheduling method and system for off-grid wind-solar green hydrogen production. The method comprises the following steps: firstly, establishing a total power balance model of an off-grid wind-solar hydrogen production scene, secondly, respectively establishing charging and discharging models of an energy storage device, introducing integer state variables of 0 and 1 to uniformly describe the independent charging and discharging models, and then respectively setting physical constraints. And finally, by establishing a multi-target hierarchical optimization proposition and according to the model and constraint established in the previous step, real-time wind and light power generation power and future power prediction data, performing optimization solution by adopting a nonlinear programming algorithm mixed with 0-1 integers. The system researched and developed based on the method can update a scheduling plan in a rolling manner through a prediction model and optimization according to high and low priority optimization targets set by an operator based on real-time and predicted wind-solar power generation power data, so that the dynamic optimization of a scheduling strategy is ensured, and reliable operation guidance is provided for wind-solar hydrogen production scheduling personnel in real time.

The invention provides a polygeneration system and method for coupling wind-solar hydrogen production with CO2 capture and utilization, and relates to the technical field of green energy. The system comprises a renewable energy source driving subsystem used for providing green electric energy and preparing green hydrogen as an energy carrier and a synthetic raw material to be supplied to a multi-path utilization subsystem; the carbon source conversion and capture subsystem is used for receiving the biomass raw material, generating gasified synthesis gas and biomass charcoal through gasification reaction, and capturing and recycling CO2 in flue gas discharged by the system; the multi-path utilization subsystem is used for receiving H2, the gasified synthesis gas and CO2 and blending reaction components to realize synthesis of green methanol, conventional methanol and green ammonia; closed-loop circulation of carbon resources is formed among the subsystems through continuous conversion, capture and feedback paths of H2, CO2 and biomass charcoal. According to the scheme, efficient synergistic conversion of hydrogen and carbon resources and full-amount utilization of carbon elements can be achieved in regions with limited carbon sources.

The invention relates to the technical field of new energy system fault diagnosis, in particular to a solar cell coupling hydrogen production system fault diagnosis method based on big data, and the method comprises the steps: collecting photovoltaic, electrolytic cell and control unit multi-source heterogeneous data, and detecting the abnormality through an abnormality detection core model; matching and repairing by combining historical similar sections to obtain operation re-repairing data; a multi-scale expansion convolutional neural network is adopted to extract time sequence fault features, a backbone network is adopted to extract infrared image high-order features, and heterogeneous aggregation features are obtained through fusion of a spiking neuron model and virtual dendritic branches; constructing dynamic graph nodes and attributes according to features and components, and integrating multiple indexes to fit a causal association strength weight; and multi-link diagnosis: obtaining a fault type through a quantum annealing algorithm, positioning a fault through causal discovery and a virtual dry prediction algorithm, integrating and reporting to a server. The method can improve the fault diagnosis accuracy and real-time performance, and is suitable for fault monitoring of the solar hydrogen production system.

There is disclosed a method of constructing a layered double hydroxide (LDH) material comprising selected metal ions, and employing metallic vanadium carbide (V2C) for promoting conductive properties of the LDH material, wherein the layered LDH material is a trimetallic LDH material. The trimetallic LDH material comprises selected Ni2+, Co2+, and A3+ metal ions with its cationic configuration for improving photocatalytic properties of the LDH material, wherein trimetallic nickel-cobalt-aluminium layered double hydroxide (NixCoyAlz LDH) and vanadium carbide MXene (V2C)-based composite is coupled with a graphitic carbon nitride (g-C3N4) nanosheet, to form a hybrid-junction photocatalyst. Also disclosed is a layered structure of vanadium carbide (V2C) MXenes, comprising trimetallic nickel-cobalt-aluminium layered double hydroxide (NixCoyAlz LDH) and vanadium carbide MXene (V2C) coupled with graphitic carbon nitride (g-C3N4), forming a NixCoyAlz LDH / g-C3N4 hybrid-junction photocatalyst.

The invention relates to the technical field of renewable energy source and process industrial intelligent control, and discloses a full-process optimization method and system for synthesizing ammonia through wind-solar hydrogen production, which can realize full-process collaboration and self-adaption to wind-solar fluctuation, and can guarantee system safety and economy in long-term operation. According to the scheme, the method comprises the steps that running state data of a wind-solar power generation system, a hydrogen production system, a hydrogen storage system and a synthetic ammonia system are collected in real time, and the collected data are preprocessed; establishing a device-level adaptive boundary model, and calculating a dynamic safe operation boundary of the key device; inputting wind-solar power prediction of a future time domain, performing rolling optimization based on the multi-objective optimization model according to constraint conditions, and generating load setting instructions of each system; and executing the load setting instruction, collecting real response data of the system, comparing a deviation between a real response and a predicted response, calculating a multi-dimensional deviation index, and when the deviation exceeds a set threshold value, performing feedback calibration on the equipment-level adaptive boundary model.

The invention relates to a method for improving solar hydrogen production efficiency of a polar heterojunction material. The method comprises the following steps: firstly, selecting a first polar two-dimensional semiconductor with asymmetric upper and lower layer elements, and coupling and stacking the first polar two-dimensional semiconductor and a second two-dimensional semiconductor through Van der Waals force to form a polar heterojunction; the intrinsic electric field, the vacuum energy level difference and the energy band arrangement of the polar heterojunction are regulated and controlled by turning polarity orientation and applying biaxial strain; under the illumination condition, the intrinsic electric field drives photo-induced electrons and hole space separation, and the vacuum energy level difference enables the oxidation or reduction potential of water to be matched with the energy band boundary, so that the condition of photocatalytic full decomposition of water is met, and the solar hydrogen production efficiency is further improved. Taking a polar heterojunction as an example, the first principle calculation shows that the solar hydrogen production efficiency of the heterojunction is remarkably improved under the regulation and control of an intrinsic electric field and biaxial strain; the method has universality and can be popularized to other two-dimensional polar heterojunction photocatalytic systems.

The invention discloses a wind-solar hydrogen production system capacity configuration method based on dynamic ant colony clustering and a main kitchen optimization algorithm, and relates to the field of comprehensive energy, and the method comprises the steps: obtaining wind-solar output data, and carrying out the clustering processing of the wind-solar output data through employing a dyeing clustering algorithm of an ant colony path-finding mechanism, and obtaining a wind-solar combined output combination set; based on the wind-solar combined output combination set and a pre-obtained electrolytic cell response feature set, an electrolytic cell combination operation mode is constructed, and an electrolytic cell power distribution model is constructed according to the electrolytic cell combination operation mode in combination with the output fluctuation rate and the output coincidence rate; and constructing a capacity configuration multi-target optimization model according to a preset hydrogen production condition in combination with the electrolytic cell power distribution model, and solving the capacity configuration multi-target optimization model by using a multi-target main-kitchen optimization algorithm with a hybrid dominant relationship to obtain a capacity configuration optimal solution. According to the method, the adaptability to complex resource distribution and engineering constraints is remarkably improved through dyeing clustering.

The invention discloses a wind and light hydrogen production electrolytic cell cluster power distribution method based on multi-objective optimization. The method comprises the following steps that a hydrogen production demand load curve and a wind and light output prediction curve are obtained; a hydrogen storage system is introduced to optimize the hydrogen production demand load curve to obtain a hydrogen production pseudo demand load curve under hydrogen storage parameters, and the hydrogen production pseudo demand load curve is used for calculating hydrogen storage loss; generating a power distribution curve under the specific power distribution parameters through a pre-constructed power distribution model; based on pre-constructed constraint conditions, enabling the power distribution scheme to meet the hydrogen production demand of the pseudo demand load curve and the system output of the wind and light output prediction curve; calculating corresponding power consumption loss according to the power distribution scheme; carrying out collaborative optimization by taking the minimum hydrogen storage loss and the minimum power consumption loss as targets to obtain an optimal power distribution parameter under a specific hydrogen storage parameter; and an additional hydrogen storage module is introduced to calculate hydrogen storage loss, so that parameter optimization of power distribution is realized by taking reduction of the hydrogen storage loss and power consumption loss as a target, and the overall efficiency is improved.

The invention provides the preparation method of the efficient photocatalyst which is simple and convenient, does not contain noble metals or toxic metals and does not need a cocatalyst. In the invention, a strategy for synergistically improving the catalytic performance by regulating and controlling sulfur vacancies and doping copper ions is provided, zinc indium sulfide (ZIS) is selected as a substrate material, the content of sulfur atoms is increased in the synthesis process through a solvothermal method to introduce the vacancies, and Cu (NO) is synchronously added to introduce Cu, so that the catalytic performance is improved. The Cin-VZIS catalyst is successfully prepared (n is a doping proportion relative to Zn). A TEOA aqueous solution is used as a sacrificial agent to carry out photocatalytic hydrogen production reaction, the synergistic effect of the two modification modes can significantly improve the performance of the catalyst, and when the copper doping ratio is 1.5%, the catalytic activity reaches the highest and is 1.799 mmol.g.h, which is 7.5 times of that of an original ZIS catalyst. The prepared catalyst is high in activity and good in stability, and a new way is provided for developing efficient and stable solar hydrogen production materials.

The invention discloses a wind and light hydrogen storage ammonia alcohol capacity configuration method, device and equipment and a medium, and relates to the technical field of new energy, and the method comprises the steps: obtaining multi-dimensional input data including historical meteorological data, system operation and supply and demand state data, and wind and light power and grid-connected regulation reference data; inputting the multi-dimensional input data into a pre-training capacity configuration model to predict and analyze the multi-dimensional input data through the pre-training capacity configuration model so as to output a full-cycle capacity configuration scheme of the wind-solar hydrogen storage ammonia-alcohol system; wherein the pre-trained capacity configuration model is a second-hour-season three-time-domain coordinated capacity configuration and path regulation and control structure, and efficient coordinated control of stable regulation and control of electrolytic cell power, intelligent switching of synthetic paths and seasonal resource allocation is realized through an output full-period capacity configuration scheme.

The invention discloses a wind-solar hydrogen storage and charging multi-energy complementary integrated system and a cooperative control method thereof, and belongs to the technical field of supervision control and data acquisition, and the method comprises the following steps: firstly detecting the fluctuation index of the output power of a power generation side, and starting the absorption of a super capacitor and the PID adjustment buffering of a lithium battery; and evaluating the state of the electrolytic cell, and determining whether or not and how to accurately adjust the feed water flow according to the water content and humidity distribution variance. And finally responding to the load change rate. According to the wind and light hydrogen storage and charging multi-energy complementary cooperative control method provided by the invention, accurate management of all working conditions of the electrolytic cell is realized through a three-step cooperative closed-loop control logic. A complete chain of'prevention-response-optimization 'is formed from source protection of power fluctuation on a power generation side, dynamic correction of the state of the electrolytic cell and graded adjustment of load change. The core value of the method lies in that through multi-parameter linkage, the damage risk of the proton exchange membrane is reduced to the maximum extent, and efficient and stable operation of the electrolytic cell is guaranteed.

The invention relates to a wind-solar optimal configuration ratio-based capacity configuration optimization method for an off-grid wind-solar hydrogen production system, which comprises the following steps of: firstly, solving an optimal wind-solar ratio by taking a wind-solar complementary principle as a basis and taking economic cost and fluctuation of a wind-solar power generation overall curve as optimization targets according to the wind-solar complementary principle; then, on the basis of the optimal configuration ratio, an improved particle swarm optimization algorithm is adopted for an off-grid wind-solar hydrogen production system which has been successfully modeled according to hydrogen production demand data and historical data such as wind speed and illumination of a target area, so that the optimal configuration ratio of the wind-solar hydrogen production system is obtained, and the optimal configuration ratio of the wind-solar hydrogen production system is obtained. In the optimization process, optimization parameters such as inertia weights and learning factors change adaptively according to system parameters, capacity configuration optimization of the off-grid wind and light hydrogen production system is carried out, and finally an optimal capacity configuration result is obtained.

The invention discloses a flexible ammonia synthesis system capacity configuration optimization method based on wind-solar combined power generation. Comprising the following steps: constructing a wind-solar hydrogen production coupling ammonia synthesis system; determining flexible boundary parameters of modules for producing hydrogen by electrolyzing water, synthesizing ammonia and the like; building an energy mass flow model of the flexible system under variable working conditions by utilizing dynamic analogue simulation of coupling of water electrolysis hydrogen production and ammonia synthesis; and by taking the minimum leveling production cost as a target parameter, constructing a wind-solar hydrogen production coupling ammonia synthesis system capacity configuration optimization model, and solving a target function to obtain wind-solar installed capacity, energy storage, the scale of hydrogen storage equipment, rated power of an electrolytic bath and ammonia synthesis equipment, and the optimal leveling production cost of ammonia. The universal capacity configuration optimization method of the green ammonia synthesis system for the flexible process is realized, the leveling production cost of the green ammonia is reduced, and the method is suitable for guiding the construction, popularization and application of an actual industrial green ammonia synthesis system.

The invention discloses a multi-electrolytic cell power distribution method and device for an off-grid type wind-solar hydrogen production system. The method comprises the steps that a model of the off-grid type wind-solar hydrogen production system is established; establishing a system operation constraint condition; determining an optimization objective function; and an optimization algorithm is applied, and according to the model of the off-grid type wind and light hydrogen production system, the system operation constraint condition and the optimization target, an optimal power distribution scheme of each electrolytic cell is solved. By means of the scheme, the potential safety hazard of explosion possibly caused by too high hydrogen concentration in oxygen can be solved, it is ensured that the system operates within the safety range by controlling the operation power and duration, and the accident risk is reduced. Meanwhile, the power distribution strategy not only considers technical feasibility, but also pays more attention to economy, and is beneficial to improving the profitability of the whole system. In addition, on the premise of meeting various constraints, unstable wind energy and solar energy resources can be more effectively utilized for hydrogen production, and the absorption proportion of renewable energy sources is increased.

The invention relates to the field of new energy hydrogen production, in particular to a wind-solar hydrogen production and storage integrated system operation planning method and system. The operation planning method for the wind-solar hydrogen production and storage integrated system comprises the steps that according to annual hourly power generation capacity and at least two preset electrolytic cell loads, predicted power generation and abandoning rates corresponding to the at least two preset electrolytic cell loads are calculated respectively; according to the predicted power generation and abandoning rates corresponding to the at least two preset electrolytic cell loads, determining a target electrolytic cell configuration load so as to determine an electrolytic cell configuration scale; determining the number of at least two hydrogen storage spherical tanks according to the target electrolytic cell configuration load capacity and the annual hourly generating capacity; respectively calculating comprehensive electricity abandoning rates corresponding to the at least two hydrogen storage spherical tanks and economic costs corresponding to the at least two hydrogen storage spherical tanks; and according to the comprehensive electricity abandoning rates corresponding to the number of the at least two hydrogen storage spherical tanks and the economic costs corresponding to the number of the at least two hydrogen storage spherical tanks, optimal hydrogen storage spherical tank configuration is determined, so that operation planning of the new energy hydrogen production system is completed.

The embodiment of the invention discloses a wind-solar hydrogen production ammonia synthesis scheduling method adapting to wind-solar fluctuation. The method comprises the following steps: acquiring a pre-constructed target scheduling model; determining the ammonia production amount of the wind-solar hydrogen production ammonia synthesis system and the electric energy consumption and the water consumption corresponding to a plurality of workshop sections of the wind-solar hydrogen production ammonia synthesis system, and determining an ammonia production net income item according to the ammonia production amount, the electric energy consumption and the water consumption; determining the ammonia production amount and the hydrogen production amount of the wind-solar hydrogen production synthetic ammonia system, and determining a hydrogen production and ammonia production load fluctuation penalty term according to the ammonia production amount and the hydrogen production amount; determining the wind and light abandoning electric quantity of the wind and light hydrogen production ammonia synthesis system, and determining an electricity abandoning penalty term according to the wind and light abandoning electric quantity; and substituting the determined ammonia production net income item, the hydrogen production ammonia production load fluctuation penalty item and the electricity abandoning penalty item into the target scheduling model so as to schedule the production operation loads of the plurality of workshop sections. According to the technical scheme provided by the embodiment of the invention, the stability and safety of the green ammonia production process can be improved.

The invention relates to a double-channel hydrogen production capacity optimization method and a double-channel hydrogen production capacity optimization device for an off-grid wind and light system, and belongs to the technical field of new energy. Off-grid wind and light output is divided into low-frequency energy, medium-frequency energy and high-frequency energy according to the maximum fluctuation value of minute-level power of the alkaline electrolytic cell, the PEM electrolytic cell and the energy storage battery, and therefore the optimal capacity configuration of the alkaline electrolytic cell, the PEM electrolytic cell and the energy storage battery is determined. The method has the characteristics that the alkaline electrolytic bath is low in cost, the PEM electrolytic bath is high in capacity of adapting to a fluctuating power supply, and the energy storage battery can realize energy transfer, so that the off-grid wind and light hydrogen production system can give consideration to the aims of improving wind and light absorption, reducing the construction investment of the hydrogen production system and the like, and the capacity and the system cost of each device in the off-grid wind and light hydrogen production system are greatly optimized.

The invention provides a two-dimensional material solar hydrogen production efficiency prediction method and device based on machine learning. The method comprises the following steps: reading a non-magnetic hexagonal crystal system single-layer material in a database to construct an initial data set; for samples with complete labels in the data set, training a single-layer material band edge position prediction model by adopting a feature engineering and gradient boosting decision tree algorithm; next, predicting and complementing samples with missing labels by using the trained model so as to generate a complete data set and further construct heterojunction double layers; carrying out data enhancement on a heterojunction sample of literature investigation through a CVAE-GAN hybrid architecture, and optimizing a feature vector; then training the new model by adopting a random forest algorithm to realize accurate prediction of the band edge position of the previously constructed heterojunction; and finally, the heterojunction type is judged in combination with a work function and a band edge position, the solar hydrogen production efficiency is calculated in batches by utilizing a program, and a high-efficiency heterojunction material is screened out.

The invention discloses a titanium dioxide nanorod / dissimilar metal MOFs heterojunction material and a preparation method and application thereof, and belongs to the technical field of photoelectrochemistry seawater hydrogen production. Soluble nickel salt, soluble cadmium salt or soluble cobalt salt and ammonium molybdate are adopted as metal sources, spherical dissimilar metal MOFs grow on the surface of a TiO2 nanorod in situ, and the TiO2 nanorod / dissimilar metal MOFs heterojunction material is prepared. According to the present invention, the oxygen deficiency-regulated dissimilar metal MOFs material (i.e., the titanium dioxide nanorod / dissimilar metal MOFs heterojunction material) is obtained through subsequent acid etching and annealing treatment, the material is subjected to in-situ reconstruction during the OER process to spontaneously form the active hydroxide (NiOOH) of anion protection (MoO4 < 2->), and the excellent stability is represented; only small Faraday efficiency loss (1.2-2.3%) occurs in a high chloride ion environment (3.5 wt%-7wt% of NaCl), and an extensible path is provided for industrial-scale solar hydrogen production by using seawater.

The application provides a multi-scenario mode wind-solar hydrogen production energy system construction method, device and equipment, relates to the new energy hydrogen production technical field, and the multi-scenario mode wind-solar hydrogen production energy system construction method comprises the following steps: obtaining component parameters of a unit in a wind-solar hydrogen production energy system, wind-solar environmental data of a planned construction site of the wind-solar hydrogen production energy system and a scenario mode of operation of the wind-solar hydrogen production energy system; determining an operation strategy of the wind-solar hydrogen production energy system according to the scenario mode; generating a target function under different operation strategies according to the component parameters and the wind-solar environmental data; and determining the capacity of each unit in the wind-solar hydrogen production energy system under different operation strategies according to the target function. The application completes the construction and optimization of the wind-solar hydrogen production energy system.

The invention relates to the technical field of energy scheduling, in particular to a scheduling method and system for an off-grid wind-solar hydrogen production and biomass gasification methanol production system, and the method comprises the steps: obtaining system prediction data; judging whether an extreme weather event occurs or not based on the environment temperature predicted value; dynamically calculating the thermal power for maintaining the lowest safe activity of the synthetic tower catalyst; taking the maximum methanol output value as a scheduling target, constructing a target function, and generating an optimal scheduling plan of a specific period in the future; executing the optimal scheduling plan; according to the method, a prediction-based dynamic guaranteed threshold model is introduced; according to the method, the future environment temperature is analyzed in real time, a catalyst activity attenuation kinetic model is combined, and the thermal power required for maintaining the lowest safe activity of the synthetic tower catalyst is dynamically calculated; according to the method, the energy scheduling decision is improved from passive response to active defense, absolute safety of chemical production core equipment under extreme conditions is ensured, and huge loss caused by non-planned shutdown is effectively avoided.

This invention discloses a method for optimizing the operation of a wind-solar hydrogen production system based on hierarchical verification deep reinforcement learning, belonging to the field of new energy hydrogen production system operation optimization technology. The method includes: collecting environmental and equipment information to construct a system state vector; establishing a multi-agent framework based on the soft actor-critic algorithm, defining the energy storage battery and electrolyzer as independent agents, and outputting control commands through continuous-discrete hybrid actions. Before execution, a Level I safety verification is performed, and the state is updated after passing; a fusion reward is calculated based on the new state using a global-local fusion reward mechanism. State samples are stored in an experience buffer for network parameter updates. During training, a Level II model performance verification is periodically performed, and qualified models are included in the candidate set; after training, a Level III deployment verification is performed, and the optimal model is selected for use in the actual system. This invention improves the operational efficiency, equipment lifespan, and system deployment reliability of wind-solar hydrogen production systems under fluctuating environments.

This invention discloses a photothermal catalyst based on Ni supported on porous carbon derived from tea residue and its application in hydrogen production from waste natural biomass. The catalyst preparation method includes tea residue raw material pretreatment, preparation of tea residue-derived carbon materials, KOH chemical activation, acid washing and water washing followed by drying, then impregnation and loading with a nickel precursor, and finally reduction in a hydrogen atmosphere to obtain the catalyst. This catalyst can catalyze the biomass steam reforming hydrogen production reaction under focused sunlight irradiation. This invention organically couples the resource utilization of tea residue solid waste with the solar photothermal-driven biomass reforming hydrogen production process, achieving synergistic effects of high-value utilization of agricultural and forestry waste and clean solar hydrogen production. The process is simple, the raw materials are readily available, and it is environmentally friendly, possessing good prospects for industrial application.

The application discloses a solar energy conversion system and an operation method thereof, and belongs to the technical field of renewable energy utilization. The system comprises a hydrogen and oxygen preparation and storage unit, a combustion and power generation unit and a flue gas treatment unit. A solar light condensation high-temperature heat collector supplies heat for a hydrogen preparation device to decompose water to prepare hydrogen and oxygen, the hydrogen and oxygen are stored after being cooled and compressed, and are sent into a combustion chamber to be mixed with circulating carbon dioxide to realize oxygen-rich combustion, supercritical carbon dioxide-water vapor flue gas is generated to drive a gas turbine to generate power, the flue gas is subjected to waste heat recovery and condensation separation, water is returned to the hydrogen preparation in a closed loop, and the pressurized carbon dioxide is branched to control the temperature of the combustion chamber and the gas turbine, so that full circulation of the working medium and cascade heat exchange are realized. The solar hydrogen preparation and supercritical carbon dioxide circulation are deeply integrated, energy utilization rate is high, and operation is stable. The application can solve problems of intermittency of solar energy, low efficiency of a traditional system, large thermal pollution and the like, is energy-saving and environment-friendly, and is good in economy.