Water electrolysis hydrogen production control system suitable for renewable energy sources

Abstract

The water electrolysis hydrogen production control system comprises an energy conversion unit, an electric energy storage unit, an electrolysis hydrogen production unit, a hydrogen storage unit, a data acquisition unit, a data transmission unit, a data storage unit, a data processing unit, an intelligent regulation and control unit and a remote monitoring unit, and the energy conversion unit is used for converting renewable energy into electric energy. Temperature, pH value, current, voltage, electric quantity, air pressure and hydrogen concentration data are collected in real time, then intelligent analysis and judgment are conducted, an analysis and judgment result is obtained, a regulation and control instruction can be issued in time, it is ensured that the temperature of the electrolytic cell is appropriate, electric energy supply is stable, and the efficiency and safety of electrolytic hydrogen production are effectively improved. And meanwhile, the remote monitoring unit realizes data visualization and abnormity alarm, so that operation and maintenance personnel can master the state of the system in time and quickly respond and process.

Description

Technical Field

[0001] The invention relates to the technical field of automatic control, and more specifically discloses a water electrolysis hydrogen production control system adapted to renewable energy. Background Art

[0002] As a clean and low-carbon energy, hydrogen energy has various advantages such as cleanliness, storage and high energy carrier, and is considered to be the most promising secondary energy in the 21st century. However, at present, hydrogen production from fossil energy is the mainstream method of hydrogen production, and the purity of the produced hydrogen is relatively low. Green hydrogen will be the mainstream in the future.

[0003] Among them, in the hydrogen production process, alkaline water electrolysis is the most promising method for industrial production of green hydrogen. However, due to the uncertainty of renewable energy such as wind and light power generation, the given power of the electrolyzer will have large fluctuations, which may cause some key parameters in the electrolyzer system to exceed the safety boundary conditions, thereby affecting the electrolysis efficiency. For example, overheating inside the electrolyzer will reduce the electrolysis efficiency and increase maintenance costs. At the same time, too high electrolyte temperature may also cause the electrolyte to decompose or evaporate, further affecting the electrolysis process. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to solve the problem that due to the uncertainty of power generation from renewable energy sources such as wind and light, the given power of the electrolyzer will have large fluctuations, which may cause some key parameters in the electrolyzer system to exceed the safety boundary conditions and thus affect the electrolysis efficiency.

[0005] To solve the above technical problems, according to one aspect of the present invention, more specifically, a water electrolysis hydrogen production control system adapted to renewable energy includes: an energy conversion unit, an electric energy storage unit, an electrolysis hydrogen production unit, a hydrogen storage unit, a data acquisition unit, a data transmission unit, a data storage unit, a data processing unit, an intelligent control unit and a remote monitoring unit;

[0006] Energy conversion unit: used to convert renewable energy into electrical energy;

[0007] Electric energy storage unit: used to store the electric energy converted by the energy conversion unit and supply power to the electrolytic hydrogen production unit;

[0008] Electrolysis hydrogen production unit: used to electrolyze water and produce hydrogen;

[0009] Hydrogen storage unit: used to collect hydrogen produced by the electrolytic hydrogen production unit;

[0010] Data acquisition unit: used to collect real-time information data generated during the process of hydrogen production by electrolysis of water using renewable energy;

[0011] Data transmission unit: used for real-time transmission of information data collected by the data collection unit;

[0012] Data storage unit: used to store the information data transmitted in real time by the data transmission unit;

[0013] Data processing unit: used to process and analyze the information data stored in the data storage unit, obtain the processing and analysis results, and then forward the obtained processing and analysis results to the remote monitoring unit, and at the same time issue control instructions to the intelligent control unit according to the processing and analysis results;

[0014] Intelligent control unit: used to receive the control signal of the data processing unit, and control the temperature and electric energy in the process of electrolytic hydrogen production according to the control signal;

[0015] Remote monitoring unit: used to display the information data stored in the data storage unit and the analysis results of the data processing unit in real time on the background terminal. At the same time, when the results obtained by the data processing unit analysis are abnormal, an alarm is issued to the background terminal.

[0016] Furthermore, the data acquisition unit includes: a temperature acquisition module, an acid-base acquisition module, a current acquisition module, a voltage acquisition module, a power acquisition module, an air pressure acquisition module and a concentration acquisition module;

[0017] Temperature acquisition module: used to collect temperature information data of the electrolyzer in the electrolytic hydrogen production unit in real time;

[0018] Acid-base acquisition module: used to collect real-time pH value information data of the solution in the electrolytic cell of the electrolytic hydrogen production unit;

[0019] Current acquisition module: used to collect the current flowing through the electrolytic cell in the electrolytic hydrogen production unit and the current information data output by the electric energy storage unit in real time;

[0020] Voltage acquisition module: used to collect the voltage loaded on the electrolytic cell in the electrolytic hydrogen production unit and the voltage information data output by the electric energy storage unit in real time;

[0021] Electricity collection module: used to collect the electricity output by the energy storage unit and the electricity consumed by the electrolyzer in real time;

[0022] Gas pressure collection module: used to collect real-time pressure information data in the electrolytic cell of the electrolytic hydrogen production unit;

[0023] Concentration acquisition module: used to collect hydrogen concentration information data in the hydrogen storage unit in real time.

[0024] Furthermore, the data processing unit includes: a data acquisition module, an analysis and judgment module, a result forwarding module and a signal sending module;

[0025] Data acquisition module: used for real-time acquisition of information data stored in the data storage unit;

[0026] Analysis and judgment module: used to process and analyze the information data obtained by the data acquisition module and obtain the results of analysis and judgment;

[0027] Result forwarding module: used to forward the results of analysis processed by the analysis and judgment module to the remote monitoring unit;

[0028] Signal sending module: used to send control command signals to the intelligent control unit according to the results of analysis and judgment when abnormal conditions are found in the results of analysis and judgment by the analysis and judgment module.

[0029] Furthermore, the intelligent control unit includes: a signal receiving module, a temperature control module and a power grid energy storage module;

[0030] Signal receiving module: used to receive the control command signal sent by the signal sending module in real time;

[0031] Temperature control module: used to control the temperature in the electrolyzer during the process of electrolyzing water to produce hydrogen;

[0032] Grid energy storage module: used to store excess electric energy produced by the energy conversion unit. At the same time, when the electric energy produced by the energy conversion unit is not enough to meet the electric energy consumed by water electrolysis to produce hydrogen, the stored electric energy is transferred from the grid energy storage unit to supply power to the hydrogen production unit together with the electric energy storage unit.

[0033] Furthermore, the remote monitoring unit includes: a data receiving module, a data display module and an abnormal alarm module;

[0034] Data receiving module: used for receiving the information data stored in the data storage unit and the analysis result information of the data processing unit in real time;

[0035] Data display module: used to display the information data received by the data receiving module on the background terminal display screen;

[0036] Abnormal alarm module: used to send an alarm prompt to the background terminal when the result obtained by the analysis and judgment module is abnormal.

[0037] Furthermore, the analysis and judgment module can obtain the information data of the temperature of the electrolytic cell, the pH value of the solution in the electrolytic cell and the current flowing in the electrolytic cell from the data acquisition module, and obtain the temperature index by analyzing the above acquired data. If:

[0038]

[0039] This indicates that the temperature of the electrolyzer is within the appropriate range and the efficiency of hydrogen production by electrolysis is stable. Temp is the temperature index, time is the time for collecting information data, and T i is the temperature of the electrolytic cell at the ith second, T e The optimal temperature and pH for the preset water electrolysis hydrogen production i is the pH value of the electrolytic cell solution at the ith second, pH start is the initial pH value of the electrolytic cell solution before electrolysis, pH min is the minimum pH value of the electrolytic solution within time, pH max is the maximum pH value of the electrolytic solution within the time period, is the current flowing through the electrolytic cell at the i-th second, I e is the preset rated current of the electrolytic cell, is the minimum current flowing through the electrolytic cell during the time period, is the maximum current flowing through the electrolytic cell during time, temp e is the preset temperature threshold parameter.

[0040] Furthermore, the analysis and judgment module can obtain the current and voltage flowing through the electrolyzer in the electrolytic hydrogen production unit, the current and voltage output by the electric energy storage unit, the amount of electricity output by the electric energy storage unit, and the amount of electricity consumed by the electrolyzer from the data acquisition module, and obtain the electric energy index through the above acquired data analysis, if:

[0041]

[0042] This means that the electric energy delivered by the electric energy storage unit is stable, where Q is the electric energy index and time is the duration of information data collection. is the voltage applied to the electrolytic cell at the ith second, is the current flowing through the electrolytic cell at the ith second, U e is the preset rated voltage of the electrolytic cell, I e is the preset rated current of the electrolytic cell, is the voltage value of the electric energy storage unit outputting electric energy at the i-th second, is the current value of the energy storage unit outputting electric energy at the i-th second, is the amount of electricity consumed by the electrolytic cell in the i-th second, is the amount of electricity output by the energy storage unit, and δ is the preset energy threshold parameter.

[0043] Furthermore, the analysis and judgment module can obtain the pressure in the electrolytic cell in the electrolytic hydrogen production unit and the hydrogen concentration information data in the hydrogen storage unit from the data acquisition module, and obtain a comprehensive stability index through the analysis of the above acquired data. If:

[0044]

[0045] This means that the system is running stably, where stab is the comprehensive stability index, time is the time for collecting information data, and F i is the pressure value in the electrolytic cell at the ith second, F e is the preset rated pressure value of the electrolytic cell, temp is the temperature index, Q is the power index, G is the ing is the actual hydrogen concentration in the hydrogen storage unit, G e is the preset rated hydrogen concentration of the hydrogen storage unit, It is the preset threshold parameter of system stability.

[0046] Furthermore, the electrolytic hydrogen production unit includes: an electrolytic cell, a cathode and an anode. After the cathode and the anode are energized, the aqueous solution in the electrolytic cell is electrolyzed to generate hydrogen.

[0047] The beneficial effects of the water electrolysis hydrogen production control system adapted to renewable energy of the present invention are as follows: by real-time collection of temperature, pH, current, voltage, electricity, air pressure and hydrogen concentration data, and then through intelligent analysis and judgment, and obtaining the analysis and judgment results, control instructions can be issued in time to ensure that the temperature of the electrolyzer is appropriate and the power supply is stable, which effectively improves the efficiency and safety of hydrogen production by electrolysis. At the same time, the remote monitoring unit realizes data visualization and abnormal alarm, which is convenient for operation and maintenance personnel to grasp the system status in time and respond quickly. In addition, the introduction of the power grid energy storage module further enhances the power regulation capability of the system, ensures the efficient utilization of renewable energy and the continuous and stable operation of water electrolysis hydrogen production, and provides strong support for the green development of the hydrogen energy industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0049] Figure 1 This is a schematic diagram of the system principle. DETAILED DESCRIPTION

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0051] According to one aspect of the present invention, Figure 1As shown, a water electrolysis hydrogen production control system adapted to renewable energy is provided. First, renewable energy is converted into electric energy, such as wind power generation or solar power generation, by an energy conversion unit. Then, the electric energy converted by the energy conversion unit is stored by an electric energy storage unit, and the cathode and anode in the electrolysis hydrogen production unit are energized to electrolyze the aqueous solution in the electrolyzer to generate hydrogen. The hydrogen produced by the electrolysis hydrogen production unit is then collected by the hydrogen storage unit.

[0052] During the hydrogen production process, the temperature of the electrolyzer in the electrolytic hydrogen production unit, the pH value of the solution in the electrolyzer, the current flowing through the electrolyzer in the electrolytic hydrogen production unit and the current output by the electric energy storage unit, the voltage loaded on the electrolyzer in the electrolytic hydrogen production unit and the voltage output by the electric energy storage unit, the amount of electricity output by the electric energy storage unit and the amount of electricity consumed by the electrolyzer, the pressure in the electrolyzer and the hydrogen concentration information data in the hydrogen storage unit are respectively collected in real time through the temperature acquisition module, the acid-base acquisition module, the current acquisition module, the voltage acquisition module, the current acquisition module, the voltage acquisition module, the electric energy acquisition module, the electric energy acquisition module and the air pressure acquisition module and the concentration acquisition module.

[0053] Then, the collected data is transmitted to the data storage unit in real time through the data transmission unit, and then the information data is obtained from the data storage unit through the data acquisition module in the data processing unit, and then the obtained information data is processed and analyzed by the analysis and judgment module.

[0054] Afterwards, when the analysis and judgment module finds an abnormal situation in the results of the analysis and judgment, it will trigger the abnormal alarm module and alarm the background terminal. At the same time, the signal sending module will send control instructions to the intelligent control unit to control the temperature and electric energy in the electrolytic hydrogen production process.

[0055] The data receiving module in the remote monitoring unit can receive the information data stored in the data storage unit and the analysis results of the data processing unit in real time, and display the received information data on the background terminal display screen through the data display module.

[0056] The analysis and judgment module can obtain the information data of the temperature of the electrolytic cell, the pH value of the solution in the electrolytic cell and the current flowing through the electrolytic cell from the data acquisition module, and obtain the temperature index through the analysis of the above acquired data. If:

[0057]

[0058] This means that the temperature of the electrolyzer is within the appropriate range and the efficiency of hydrogen production by electrolysis is stable. eThis means that the temperature of the electrolytic cell is too high and the efficiency of hydrogen production by electrolysis is reduced, which will trigger the abnormal alarm module to alarm the background terminal, and then cool the electrolytic cell through the temperature control module to ensure that the temperature of the electrolytic cell is within the appropriate range. Among them, temp is the temperature index, time is the duration of information data collection, and T i is the temperature of the electrolytic cell at the ith second, T e The optimal temperature for hydrogen production by water electrolysis is preset to be 25°C, pH i is the pH value of the electrolytic cell solution at the ith second, pH start is the initial pH value of the electrolytic cell solution before electrolysis, pH min is the minimum pH value of the electrolytic solution within time, pH max is the maximum pH value of the electrolytic solution within the time period, is the current flowing through the electrolytic cell at the i-th second, I e is the preset rated current of the electrolytic cell, is the minimum current flowing through the electrolytic cell during the time period, is the maximum current flowing through the electrolytic cell during time, temp e is the preset temperature threshold parameter. During the data collection process, the preset optimal temperature T for water electrolysis hydrogen production e =25, The initial pH value of the electrolytic solution before electrolysis start =7, during the time period, the maximum and minimum pH values ​​of the electrolytic solution are: pH max =9, pH min =7, The preset rated current I of the electrolytic cell e =2, during the time period, the maximum and minimum currents flowing through the electrolytic cell are: The preset temperature threshold parameter temp e =1,

[0059] Therefore, 1.04>1, it means that the temperature of the electrolytic cell is too high and the efficiency of hydrogen production by electrolysis is reduced, which will trigger the abnormal alarm module to alarm the background terminal, and then cool the electrolytic cell through the temperature control module to ensure that the temperature of the electrolytic cell is within the appropriate range.

[0060] The analysis and judgment module can obtain the current and voltage flowing through the electrolyzer in the electrolytic hydrogen production unit, the current and voltage output by the electric energy storage unit, the power output by the electric energy storage unit, and the power consumed by the electrolyzer from the data acquisition module, and obtain the power index through the above acquired data analysis. If:

[0061]

[0062] This means that the power storage unit delivers stable power. This means that the power delivered by the power storage unit is unstable, which will trigger the abnormal alarm module to send an alarm to the background terminal. This means that the power consumption is too slow, and the power produced by the energy conversion unit exceeds the power consumed by water electrolysis to produce hydrogen. The excess power converted by the energy conversion unit will be transmitted to the grid energy storage unit for storage. This means that the electricity consumption is too fast, and the electricity produced by the energy conversion unit is not enough to meet the electricity consumption of water electrolysis to produce hydrogen. Electric energy will be transferred from the grid energy storage unit to supplement the electricity consumption of water electrolysis to produce hydrogen. Among them, Q is the electricity index, and time is the duration of information data collection. is the voltage applied to the electrolytic cell at the ith second, is the current flowing through the electrolytic cell at the ith second, U e is the preset rated voltage of the electrolytic cell, I e is the preset rated current of the electrolytic cell, is the voltage value of the electric energy storage unit outputting electric energy at the i-th second, is the current value of the energy storage unit outputting electric energy at the i-th second, is the amount of electricity consumed by the electrolytic cell in the i-th second, is the amount of electricity output by the energy storage unit, and δ is the preset energy threshold parameter. During data collection, the preset rated voltage U e =220, The preset rated current of the electrolytic cell is Ie=2, The preset power threshold parameter δ=0.01, therefore, This means that the power delivered by the power storage unit is unstable, which will trigger the abnormal alarm module to send an alarm to the background terminal, and This means that the electricity consumption is too slow, and the electricity produced by the energy conversion unit exceeds the electricity consumed by water electrolysis to produce hydrogen. The excess electricity converted by the energy conversion unit will be transmitted to the grid energy storage unit for storage.

[0063] The analysis and judgment module can obtain the pressure in the electrolytic cell of the electrolytic hydrogen production unit and the hydrogen concentration information data in the hydrogen storage unit from the data acquisition module, and obtain the comprehensive stability index through the analysis of the above acquired data. If:

[0064]

[0065] This means that the system is running stably. This means that the system is running unstably, which will trigger the abnormal alarm module to send an alarm to the back-end terminal, and then send staff to the site for overall maintenance. Among them, stab is the comprehensive stability index, time is the time for information data collection, and F i is the pressure value in the electrolytic cell at the ith second, F e is the preset rated pressure value of the electrolytic cell, temp is the temperature index, Q is the power index, G is the ing is the actual hydrogen concentration in the hydrogen storage unit, G e is the preset rated hydrogen concentration of the hydrogen storage unit, is the preset threshold parameter for system stability. During the data collection process, the temperature index temp=1.04, the power index Q=0.979, and the preset rated pressure value F of the electrolytic cell e =0.1, The preset rated hydrogen concentration G of the hydrogen storage unit e =20, the actual hydrogen concentration in the hydrogen storage unit is G ing =18, so, Preset threshold parameters for system stability 1.3∈[0.65,1.43], it means that the system runs stably.

[0066] The above-mentioned embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A water electrolysis hydrogen production control system adapted to renewable energy, characterized in that: include: Energy conversion unit, electric energy storage unit, electrolysis hydrogen production unit, hydrogen storage unit, data acquisition unit, data transmission unit, data storage unit, data processing unit, intelligent control unit and remote monitoring unit; Energy conversion unit: used to convert renewable energy into electrical energy; Electric energy storage unit: used to store the electric energy converted by the energy conversion unit and supply power to the electrolytic hydrogen production unit; Electrolysis hydrogen production unit: used to electrolyze water and produce hydrogen; Hydrogen storage unit: used to collect hydrogen produced by the electrolytic hydrogen production unit; Data acquisition unit: used to collect real-time information data generated during the process of hydrogen production by electrolysis of water using renewable energy; Data transmission unit: used for real-time transmission of information data collected by the data collection unit; Data storage unit: used to store the information data transmitted in real time by the data transmission unit; Data processing unit: used to process and analyze the information data stored in the data storage unit, obtain the processing and analysis results, and then forward the obtained processing and analysis results to the remote monitoring unit, and at the same time issue control instructions to the intelligent control unit according to the processing and analysis results; Intelligent control unit: used to receive the control signal of the data processing unit, and control the temperature and electric energy in the process of electrolytic hydrogen production according to the control signal; Remote monitoring unit: used to display the information data stored in the data storage unit and the analysis results of the data processing unit in real time on the background terminal. At the same time, when the results obtained by the data processing unit analysis are abnormal, an alarm is issued to the background terminal.

2. The water electrolysis hydrogen production control system adapted to renewable energy according to claim 1 is characterized in that: The data acquisition unit includes: a temperature acquisition module, an acid-base acquisition module, a current acquisition module, a voltage acquisition module, a power acquisition module, an air pressure acquisition module and a concentration acquisition module; Temperature acquisition module: used to collect temperature information data of the electrolyzer in the electrolytic hydrogen production unit in real time; Acid-base acquisition module: used to collect the pH value information data of the solution in the electrolytic cell of the electrolytic hydrogen production unit in real time; Current acquisition module: used to collect the current flowing through the electrolytic cell in the electrolytic hydrogen production unit and the current information data output by the electric energy storage unit in real time; Voltage acquisition module: used to collect the voltage loaded on the electrolytic cell in the electrolytic hydrogen production unit and the voltage information data output by the electric energy storage unit in real time; Electricity collection module: used to collect the electricity output by the energy storage unit and the electricity consumed by the electrolyzer in real time; Gas pressure acquisition module: used to collect real-time pressure information data in the electrolytic cell of the electrolytic hydrogen production unit; Concentration acquisition module: used to collect hydrogen concentration information data in the hydrogen storage unit in real time.

3. The water electrolysis hydrogen production control system adapted to renewable energy according to claim 2 is characterized in that: The data processing unit includes: a data acquisition module, an analysis and judgment module, a result forwarding module and a signal sending module; Data acquisition module: used for real-time acquisition of information data stored in the data storage unit; Analysis and judgment module: used to process and analyze the information data obtained by the data acquisition module and obtain the results of analysis and judgment; Result forwarding module: used to forward the results of analysis processed by the analysis and judgment module to the remote monitoring unit; Signal sending module: used to send control command signals to the intelligent control unit according to the results of analysis and judgment when abnormal conditions are found in the results of analysis and judgment by the analysis and judgment module.

4. The water electrolysis hydrogen production control system adapted to renewable energy according to claim 3 is characterized in that: The intelligent control unit includes: a signal receiving module, a temperature control module and a power grid energy storage module; Signal receiving module: used to receive the control command signal sent by the signal sending module in real time; Temperature control module: used to control the temperature in the electrolyzer during the process of electrolyzing water to produce hydrogen; Grid energy storage module: used to store excess electric energy produced by the energy conversion unit. At the same time, when the electric energy produced by the energy conversion unit is not enough to meet the electric energy consumed by water electrolysis to produce hydrogen, the stored electric energy is transferred from the grid energy storage unit to supply power to the hydrogen production unit together with the electric energy storage unit.

5. The water electrolysis hydrogen production control system adapted to renewable energy according to claim 4 is characterized in that: The remote monitoring unit includes: a data receiving module, a data display module and an abnormal alarm module; Data receiving module: used for receiving the information data stored in the data storage unit and the analysis result information of the data processing unit in real time; Data display module: used to display the information data received by the data receiving module on the background terminal display screen; Abnormal alarm module: used to send an alarm prompt to the background terminal when the result obtained by the analysis and judgment module is abnormal.

6. The control system for producing hydrogen from electrolyzed water adapted to renewable energy according to claim 5 is characterized in that: The analysis and judgment module can obtain the information data of the temperature of the electrolytic cell, the pH value of the solution in the electrolytic cell and the current flowing in the electrolytic cell from the data acquisition module, and obtain the temperature index by analyzing the above acquired data. If: This indicates that the temperature of the electrolyzer is within the appropriate range and the efficiency of hydrogen production by electrolysis is stable. Temp is the temperature index, time is the time for collecting information data, and T i is the temperature of the electrolytic cell at the ith second, T e The optimal temperature and pH for the preset water electrolysis hydrogen production i is the pH value of the electrolytic cell solution at the ith second, pH start is the initial pH value of the electrolytic cell solution before electrolysis, pH min is the minimum pH value of the electrolytic solution within time, pH max is the maximum pH value of the electrolytic solution within the time period, is the current flowing through the electrolytic cell at the i-th second, I e is the preset rated current of the electrolytic cell, is the minimum current flowing through the electrolytic cell during the time period, is the maximum current flowing through the electrolytic cell during time, temp e is the preset temperature threshold parameter.

7. The water electrolysis hydrogen production control system adapted to renewable energy according to claim 6 is characterized by: The analysis and judgment module can obtain the current and voltage flowing through the electrolyzer in the electrolytic hydrogen production unit, the current and voltage output by the electric energy storage unit, the amount of electricity output by the electric energy storage unit, and the amount of electricity consumed by the electrolyzer from the data acquisition module, and obtain the electric energy index through the above acquired data analysis, if: This means that the electric energy delivered by the electric energy storage unit is stable, where Q is the electric energy index and time is the duration of information data collection. is the voltage applied to the electrolytic cell at the ith second, is the current flowing through the electrolytic cell at the ith second, U e is the preset rated voltage of the electrolytic cell, I e is the preset rated current of the electrolytic cell, is the voltage value of the electric energy storage unit outputting electric energy at the i-th second, is the current value of the energy storage unit outputting electric energy at the i-th second, is the amount of electricity consumed by the electrolytic cell in the i-th second, is the amount of electricity output by the energy storage unit, and δ is the preset energy threshold parameter.

8. The control system for producing hydrogen from electrolyzed water adapted to renewable energy according to claim 7 is characterized in that: The analysis and judgment module can obtain the pressure in the electrolytic cell of the electrolytic hydrogen production unit and the hydrogen concentration information data in the hydrogen storage unit from the data acquisition module, and obtain the comprehensive stability index through the above acquired data analysis, if: This means that the system is running stably, where stab is the comprehensive stability index, time is the time for collecting information data, and F i is the pressure value in the electrolytic cell at the ith second, F e is the preset rated pressure value of the electrolytic cell, temp is the temperature index, Q is the power index, G is the ing is the actual hydrogen concentration in the hydrogen storage unit, G e is the preset rated hydrogen concentration of the hydrogen storage unit, It is the preset threshold parameter of system stability.

9. The water electrolysis hydrogen production control system adapted to renewable energy according to claim 8, characterized in that: The electrolytic hydrogen production unit comprises: an electrolytic cell, a cathode and an anode. When the cathode and the anode are energized, the aqueous solution in the electrolytic cell is electrolyzed to generate hydrogen.

Images