34 results about "Solar hydrogen" patented technology

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.

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 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.

The application discloses a hydrogen storage-hydrogen transmission rolling optimization scheduling method and system for wind-solar hydrogen production. The method constructs a dynamic model containing storage tank material balance, pressure state and hydrogen transmission capacity constraints, and supports time-varying working condition description of effective volume of the storage tank. In order to avoid optimization infeasibility, a total amount feasibility pre-check based on hydrogen production prediction, maximum hydrogen transmission capacity and hydrogen storage capacity of the storage tank is proposed, which is used for identifying over-tank risk in advance and triggering scheduling degradation. In view of the amplitude and frequency requirements of hydrogen transmission change of the downstream hydrogen utilization process, the method introduces integer variables and sliding windows to construct minimum adjustment frequency and minimum adjustment interval constraints. Based on real-time storage tank data and hydrogen production prediction, the method uses a mixed integer optimization algorithm to solve the optimal hydrogen transmission strategy in the rolling prediction time domain, and only executes the first step instruction of the current period, so that the rapid response to operation is realized. The application can improve the pressure safety margin of the storage tank, reduce the system adjustment frequency and enhance the operation stability of wind-solar hydrogen production.

The invention discloses a near-zero-emission system and process for preparing ethylene glycol by coupling wind, light and gas, and belongs to the technical field of green new energy. The system comprises a wind-solar hydrogen production system, a chemical looping system, a combined heat and power generation system, a carbon sequestration system, an ethylene glycol synthesis and separation system and a fuel cell peak regulation system, the wind-light hydrogen production system conveys hydrogen to the ethylene glycol synthesis and separation system through a pipeline; the wind-solar hydrogen production system is connected with the fuel cell peak regulation system through an oxygen pipeline; the chemical chain system is respectively communicated with the ethylene glycol synthesis and separation system, the combined heat and power generation system and the carbon sequestration system through pipelines; the combined heat and power generation system provides electric power and steam for the ethylene glycol synthesis and separation system and provides residual electric power for the wind-solar hydrogen production system; and the fuel cell peak regulation system and the combined heat and power generation system respectively supply power to the wind-solar hydrogen production system through the power bus. By means of the synergistic effect of the systems, near-zero emission is achieved.

The invention provides a method and a device for calculating a double-sided single-layer solar hydrogen production efficiency limit. The method comprises the following steps: reading vacuum energy level difference data of a double-sided material input by a user; inputting the vacuum energy level difference data into a solar hydrogen production efficiency limit formula for calculation to obtain a solar hydrogen production efficiency limit value of the double-sided material; according to the method, high-precision and reliable calculation is realized by deducing a solar hydrogen production efficiency limit formula of a two-dimensional double-sided single-layer material in combination with vacuum energy level difference data input by a user, and comprehensive performance analysis and optimization suggestions are provided by traversing a plurality of physical property parameter data to draw an efficiency analysis map. Meanwhile, the user operation process is simplified, the analysis efficiency is improved, and the scientificity, practicability and user experience of solar hydrogen production efficiency evaluation and optimization are remarkably improved.

The invention discloses an optimal configuration method for a wind-solar hydrogen storage isolated network system containing network construction type energy storage, and belongs to the field of isolated network power system configuration. The method comprises the steps that an equipment model of the wind and light hydrogen storage isolated network system is established, the equipment model comprises a wind generating set model, a photovoltaic generating set model, a network construction type energy storage model and a hydrogen production electrolytic cell model, and the wind generating set model and the network construction type energy storage model are inertia supporting sources of the system. According to the method, the inertia level of a system is quantified based on generalized kinetic energy, a system frequency safety index is constructed accordingly, and the index serves as a constraint condition to be introduced into a double-layer optimization configuration model comprising an outer-layer planning model with the maximum annual total income as a target and an inner-layer operation model with operation safety and economical efficiency as targets. On the premise that the frequency safety requirement of the system is met, reasonable configuration of the net-forming type energy storage and hydrogen production equipment is achieved, and the operation stability and the overall economical efficiency of the wind and light hydrogen storage isolated net system are improved.

The invention provides a wind and light hydrogen production system double-layer optimization method based on an improved genetic algorithm (IGA) and an optimal efficiency interval of an electrolytic cell. Aiming at the problem of insufficient economy of the wind-solar hydrogen production system, the double-layer optimization problem of the wind-solar hydrogen production system is established. Wherein the upper layer problem is electrolytic cell and storage battery capacity configuration optimization considering maximization of the internal yield rate, and the lower layer problem is electrolytic cell starting and stopping and energy storage charging and discharging dynamic scheduling based on the upper layer configuration result. Besides, an improved genetic algorithm (IGA) is further provided for an upper-layer optimization problem, and by introducing abnormal value screening, the stability and convergence speed of genetic manipulation are remarkably enhanced; in order to solve the problem of the lower layer, a method for determining the dynamic response characteristics of the hydrogen production efficiency and the per-unit power value is designed, and intelligent scheduling is realized by adopting a CPLEX mathematical programming solver. Compared with a traditional method, the method has the advantages that the net present value of the system is increased by 15.6%, the annual operation cost is increased by 34.4%, and the overall economical efficiency of the system is effectively improved.

The invention provides a wind-solar hydrogen production intelligent control system, and relates to the technical field of electric power, and the system comprises an energy input module which is used for collecting and obtaining a hydrogen production power prediction sequence in real time; the control instruction module is used for obtaining a maximum absorption electrolytic bath state prediction table through the hydrogen production power prediction sequence by utilizing a maximum absorption algorithm; utilizing a minimum action algorithm to obtain a minimum action electrolytic bath state prediction table through the hydrogen production power prediction sequence; obtaining a performance index through the maximum consumption expected income and the minimum action expected income; using the maximum consumption electrolytic bath state prediction table or the minimum action electrolytic bath state prediction table as a target electrolytic bath state prediction table through performance indexes; and the energy conversion and storage module is used for controlling hydrogen conversion and storage according to the target electrolytic cell state prediction table. According to the invention, the load distribution efficiency is improved, and meanwhile, a wind-solar hydrogen production unified scheduling mechanism is realized.

The utility model discloses a kind of hydrogen storage devices for solar hydrogen production belongs to hydrogen storage device technical field.This kind of hydrogen storage devices for solar hydrogen production, including installation component, storage component and plugging component, storage component is used to store hydrogen, plugging component is used to plugging storage component, plugging component includes communicating pipe, the side of communicating pipe is equipped with communicating plate, communicating plate is installed with communicating seat on the side away from communicating pipe, the inside of communicating seat is equipped with conical chamber, conical chamber is equipped with magnetic ball in the inside, first electromagnet is installed on the inner wall of one end away from communicating plate of conical chamber, and magnetic ball is magnetically attracted between first electromagnet, the bottom of communicating seat is communicated with hydrogen gas inlet pipe at first electromagnet, storage component includes hydrogen storage tank, the bottom of hydrogen storage tank is equipped with inlet hole, flowmeter is installed on the bottom of hydrogen storage tank at inlet hole, and flowmeter is fixedly connected with the upper end of communicating pipe on one end away from hydrogen storage tank.

This invention belongs to the field of green hydrogen and ammonia technology, specifically disclosing a skid-mounted flexible wind-solar hydrogen and ammonia system and its operation control method. The system includes a wind-solar power generation system, an alkaline and PEM hydrogen production subsystem, a low-pressure hydrogen storage tank, several skid-mounted nitrogen production subsystems, several skid-mounted ammonia synthesis subsystems, and a control unit. Based on the traditional automatic regulation and control of ammonia synthesis, this invention combines nitrogen production and ammonia synthesis in a skid-mounted configuration, enhancing the system's regulatory flexibility and significantly improving the response speed and operational elasticity of the ammonia synthesis process under various new energy power generation conditions. By using the by-product steam from ammonia synthesis to heat the standby equipment for hydrogen production and ammonia synthesis, the problems of slow temperature rise and slow load adjustment under corresponding loads can be greatly shortened, improving its ability to quickly match load fluctuations with upstream new energy power. Furthermore, this system, combined with energy storage, is expected to achieve off-grid or weakly grid-connected green hydrogen and ammonia production.

The invention discloses equipment and a process for synthesizing methanol by solar hydrogen production, the equipment comprises a base fixed on the ground, two support plates are symmetrically arranged on the base, and flow reactors are symmetrically arranged between the two support plates and located at two ends of the support plates; a secondary reflector is arranged on one side, close to the middle position of the supporting plate, of each flow reactor; a groove type condenser parallel to the flow reactor is arranged outside the base; a symmetrical and modularized double-reactor structure is adopted, the two flow reactors with the same capture-desorption-conversion function are subjected to day-night role alternation, CO2 conversion in the daytime and CO2 capture at night through a rotating mechanism, and the problem that the CO2 capture rate and the CO2 conversion rate are not matched is successfully solved in a cyclic operation mode; a secondary reflector is further adopted, heat flux of the upper surface and the lower surface of the absorption tube is effectively balanced, and therefore the photo-thermal performance and the operation reliability of the groove type condenser are improved.

The invention relates to the technical field of hydrogen purification, and discloses a TSA dehydration system and method suitable for large-scale wind and light hydrogen production, and the system comprises the following modules: an adsorption module which is composed of a plurality of drying towers and is used for adsorbing moisture in upstream crude hydrogen; the regeneration treatment module comprises a regeneration gas heater, a regeneration gas heat exchanger, a regeneration gas cooler and a regeneration gas gas-liquid separator which are sequentially connected in series and are respectively used for regeneration gas heating, heat exchange of hot-state and cold-state regeneration gas, regeneration gas cooling and gas-water separation, and the regeneration treatment module is provided with a regulating valve for controlling the gas taking amount of the regeneration gas; a valve control module; a monitoring module; and a main control module. Four operation modes are divided according to the real-time crude hydrogen flow, mode switching is executed only when an adsorption time sequence period is finished and dew point monitoring and temperature monitoring both meet qualified conditions, and therefore the number of online towers of an adsorption unit is adjusted along with the change of the crude hydrogen flow, and adaptation to the change of the crude hydrogen flow under the wind-solar hydrogen production condition is achieved.

The invention discloses a coal-fired boiler and wind-light hydrogen ammonia alcohol preparation coupling system which comprises a wind-light power generation system, an electrolysis device, an oxygen separator, a hydrogen separator, a premixer, a coal-fired boiler, a desulfurization device, a decarbonization device, a carbon dioxide compressor, a methanol synthesis device, a PSA device, a nitrogen compressor, a synthesis ammonia device and a hydrogen compressor. Electricity generated by the wind-solar power generation system is used for preparing hydrogen and oxygen through the electrolytic cell, the hydrogen is pressurized to synthesize methanol with carbon dioxide captured by the coal-fired boiler decarburization device under the action of a catalyst of the methanol synthesis device, and organic nitrogen and ammonia in coal are combusted through the coal-fired boiler to generate nitrogen. Purifying through the PSA device, and synthesizing ammonia with hydrogen in the ammonia synthesis device. According to the invention, two-stage synthesis of ammonia and three-stage synthesis of methanol are realized through gradient utilization of flue gas energy, the synthesis efficiency of ammonia and methanol is improved, oxygen, ammonia, flue gas and pulverized coal are premixed, the flue gas decarburization efficiency is improved, and ammonia is used for flue gas desulfurization, so that reduced emission of SO2, CO2 and NOX of the coal-fired boiler is realized.

The invention relates to the technical field of hydrogen production technologies, in particular to solar hydrogen production equipment. According to the solar hydrogen production equipment disclosed by the invention, an evaporation chamber of a high-temperature evaporation module is used for introducing pure water and evaporating the pure water into water vapor by utilizing a heat source; a power supply unit of the electrolysis module is used for supplying power to a positive electrode electrolysis unit and a negative electrode electrolysis unit, and the positive electrode electrolysis unit and the negative electrode electrolysis unit are arranged in an electrolysis chamber to electrolyze water vapor into oxygen and hydrogen respectively; a hydrogen storage unit of the gas storage module is used for receiving and storing electrolyzed hydrogen, and an oxygen storage unit is used for receiving and storing electrolyzed oxygen. According to the solar hydrogen production equipment, sunlight is gathered through the light gathering and heat collecting unit to directly provide a heat source for the evaporation chamber, so that the pure water fully absorbs the solar energy and converts the solar energy into high-temperature water vapor, the heat conversion rate is relatively high, less electric energy is required during subsequent electrolysis of the high-temperature water vapor, and the running cost is relatively low.

The wind and light hydrogen storage capacity configuration planning method of wind and light output interval uncertainty of the application, through cooperation planning of wind and light hydrogen storage capacity, the planning mode guarantees that the cooperation benefits of wind power, photovoltaic and hydrogen production are not lower than the benefits of independent operation, realizes balanced consideration of multi-subject benefits, and realizes double optimization targets of system operation cost reduction and total benefit significant improvement through optimization of equipment capacity configuration and electricity trading strategy. In addition, the application not only effectively improves wind and light clean energy consumption efficiency and overall resource utilization efficiency, but also greatly improves the comprehensive economy of the wind and light hydrogen storage multi-energy system, and further verifies the practical application value and practical feasibility of the cooperation game theory in the field of wind and light hydrogen storage multi-subject energy system capacity configuration and optimal operation.

This invention provides a method, apparatus, and equipment for controlling the hydrogen supply balance of a wind-solar-hydrogen production system. The method includes: obtaining the initial allocable power available for hydrogen production from the wind and solar power sides of the target wind-solar-hydrogen production system; allocating power to each electrolyzer in the target wind-solar-hydrogen production system based on the initial allocable power to obtain preliminary hydrogen production results; judging the hydrogen supply capacity based on downstream hydrogen demand to obtain a judgment result; adjusting the target wind-solar-hydrogen production system to increase hydrogen production or adjust hydrogen consumption based on the judgment result to obtain the hydrogen supply balance result at the current time step; and controlling the target wind-solar-hydrogen production system at the current time step based on the hydrogen supply balance result at the current time step. The solution of this invention can reduce power and hydrogen waste, decrease ineffective hydrogen production and ineffective energy storage operations, and improve the feasibility and consistency of hourly operation control of the wind-solar-hydrogen production system while ensuring the reliability of hydrogen supply.

The present disclosure provides a functional (photovoltaic) PV powered facilitated Water electrolyzer system for solar hydrogen generation having two components: a functional PV panel and a facilitated water electrolyzer. The present invention provides functional PV powered facilitated water electrolyzer (F-PV-WE) systems. The invention provides a process using integrated functional PV with facilitated water electrolysis for multiproduct generation including hydrogen, oxygen and hypochlorite with reduction in energy and environmental footprint.

The application discloses a capacity configuration method and device of wind-solar hydrogen storage ammonia alcohol, equipment and medium, relates to the new energy technology field, and includes: obtaining multi-dimensional input data containing historical meteorological data, system operation and supply and demand state data, wind-solar power and grid-connected regulation benchmark data;The multi-dimensional input data is input into the pre-training capacity configuration model, so that the multi-dimensional input data is predicted and analyzed by the pre-training capacity configuration model, and the full-cycle capacity configuration scheme of the wind-solar hydrogen storage ammonia alcohol system is output;Wherein, the pre-training capacity configuration model is a capacity configuration and path regulation structure of second-hour-season three time domain cooperation, and through the output full-cycle capacity configuration scheme, the efficient cooperative control of electrolytic cell power smooth regulation, synthesis path intelligent switching and seasonal resource allocation is realized.

The invention discloses an output prediction method of a wind and light power generation system, and a wind and light hydrogen production scheduling method and system, and relates to the technical field of renewable energy source production control, and the method comprises the steps: obtaining wind and light prediction output data, carrying out the preprocessing, and carrying out the interpolation completion of the missing data; acquiring wind and light predicted output data in the future 0-a hours, and recording the data as first data; acquiring wind and light predicted output data from a to b hours in the future, and recording the data as second data; 0 < a < b; acquiring historical wind and light prediction output data to correct the second data to generate third data; combining the first data and the third data into final predicted output data; outputting final predicted output data in real time; performing real-time rolling correction on the final predicted output data; the real-time rolling correction is to update the final predicted output data by taking a preset time interval as a period. Through real-time feedback and correction of wind and light prediction output data, a continuously updated high-precision basis is provided for a downstream power utilization system.

This invention belongs to the field of energy regulation technology and relates to a calculation method for a hydro-wind-solar hybrid power generation and green electricity consumption hydrogen production regulation system. The method includes the following steps: establishing a hydro-wind-solar hybrid hydrogen regulation model, improving the traditional particle swarm optimization algorithm, solving the multi-objective function based on the improved particle swarm optimization algorithm, and solving the objective function based on the lower-level model. This invention explores an optimized regulation mode for a hydro-wind-solar hybrid green electricity consumption hydrogen production system. By establishing mathematical models of wind turbine generators, solar power generation equipment, and hydropower station generators, and further introducing the green electricity consumption hydrogen production system, the feasibility of the hydro-wind-solar hybrid green electricity consumption hydrogen production system is analyzed. The mathematical model of the hydro-wind-solar hydrogen storage system is further deepened, making the system operation mode more flexibly responding to output, and effectively solving the multi-dimensional and constrained difficulties in solving the hydro-wind-solar hydrogen problem.

The invention belongs to the technical field of photoelectrochemical water decomposition photoelectrode material preparation, and particularly relates to a biased-voltage-free dual-electrode coupling hydrogen production system and a preparation method thereof. When the lattice matching degree between a metal chalcogenide precursor film and a transparent conductive substrate is larger than or equal to 95%, the biased-voltage-free dual-electrode coupling hydrogen production system is obtained based on the good lattice matching characteristic; through a hydrothermal method and annealing treatment, the photoelectric cathode film with large grain size and high crystal quality is prepared on the transparent conductive substrate. The optimized crystal orientation and obviously reduced grain boundary density effectively promote efficient separation and rapid transmission of photo-induced electron-hole pairs. On the basis, the unbiased solar-driven dual-electrode hydrogen production system is successfully prepared by coupling the photoelectric cathode film with a Cu2O anode, and in the system, a photocathode can efficiently generate electron-hole pairs. The system provided by the invention provides a new strategy for large-scale efficient solar hydrogen production, and realizes synergistic synthesis of high-added-value chemicals at the same time.

The application discloses an electricity-carbon-hydrogen collaborative optimization scheduling method for carbon emission management and wind-solar power consumption, first, a dynamic model of "knowing carbon by electricity" is constructed by fusing multi-source data, and key carbon sources are identified; second, the uncertainty of wind-solar power output is described by using the Copula theory and clustering method; then, an electricity-carbon-hydrogen multi-energy flow system state model is established; then, a robust optimization model is constructed with the minimum carbon emission and the minimum interactive power as the target; finally, a multi-objective intelligent algorithm is used for solving and closed-loop verification. The application innovatively deeply fuses carbon emission online perception, carbon source tracking evaluation and wind-solar hydrogen system robust scheduling, and solves the problem of carbon-electricity collaborative optimization.

The invention discloses an operation optimization method of an alkaline water electrolysis system for multi-scene wind-solar hydrogen production. The method comprises the following steps: firstly, establishing a mathematical model between the physical hydrogen production capacity of the alkaline water electrolysis hydrogen production system and the current, temperature, Faraday efficiency and the like of the system, then establishing a relation model between the voltage of an operation chamber of the electrolysis system and various potentials, and then respectively setting physical constraints such as system operation temperature, pressure, alkaline electrolyte concentration, current density and the like; and finally, establishing an operation optimization proposition supporting multiple production scene targets, and obtaining an optimal system operation condition according to the model and constraint established in the previous steps and the real-time wind-solar power generation power. By optimizing the operation conditions of the alkaline water electrolysis hydrogen production system in real time, the fluctuation of upstream wind-light-electricity power data and the demand change of downstream hydrogen load can be quickly responded, the energy consumption cost of the system is reduced, and the safety and economic benefits of system operation are improved.

The invention discloses a perylene bisimide-based COF material as well as a preparation method and application thereof in photocatalysis. The material is prepared by taking perylene bisimide as an electron donor and a monomer with high hydrogen evolution catalytic activity as an electron acceptor and adopting a traditional COF synthesis technology, and has double active sites required by full water splitting, a wide light absorption range and excellent charge separation capacity. The PDI-COF catalyst realizes low-cost and high-efficiency photocatalytic full water splitting hydrogen production under visible light, and has huge potential in the field of commercial solar hydrogen production.