Safety control method, device and equipment of water electrolysis hydrogen production system and medium

By monitoring the voltage value of the electrolysis chamber in the water electrolysis hydrogen production system in real time, and using changes in voltage consistency characteristics to trigger early warnings and implement graded pressure regulation, the problem of safety control lag in the water electrolysis hydrogen production system is solved, thereby improving the system's safety and production continuity.

CN121718921APending Publication Date: 2026-03-24GUOHUA HEBEI NEW ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-14
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

The existing safety control methods for water electrolysis hydrogen production systems are reactive, resulting in delayed early warnings and an inability to identify early local faults. This can easily lead to unnecessary shutdowns, affecting production continuity and economic efficiency.

Method used

By synchronously collecting the voltage value of each electrolysis cell in the series electrolyzer in real time, calculating the real-time statistical characteristics of voltage consistency and establishing a dynamic baseline, and based on the early consistency risk warning triggered by deviation, the system performs graded active pressure control to adjust the gas path pressure parameters of suspected faulty cells.

Benefits of technology

It enables early identification of local faults, avoids the development of risks, significantly improves the system's early warning foresight and operational safety, reduces unnecessary emergency shutdowns, improves system energy efficiency, and provides a data foundation for predictive maintenance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a safety control method, device and equipment for a water electrolysis hydrogen production system and a medium, and relates to the field of water electrolysis hydrogen production. The safety control method comprises the steps that S1, the real-time voltage value of each small electrolysis chamber in series connection electrolytic cells is synchronously collected in real time; s2, calculating real-time statistical characteristics representing voltage consistency, and establishing a dynamic baseline for the real-time statistical characteristics; s3, if the deviation of the real-time statistical characteristics relative to the dynamic baseline meets a preset early warning condition, triggering early consistency risk early warning; s4, positioning at least one suspected fault cell based on the real-time voltage value of each electrolysis cell; according to the method, the voltage data of all the series electrolysis cells are synchronously collected and analyzed in real time, and the statistical characteristic change of voltage consistency is used as an early risk sensitive index, so that early warning can be given out at the early stage of a fault and before the gas concentration exceeds the standard, and a suspected fault cell is accurately positioned.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen production by water electrolysis, and in particular to a safety control method, device, equipment and medium for a hydrogen production system by water electrolysis. BACKGROUND

[0002] Hydrogen production by water electrolysis is one of the core technologies for producing green hydrogen, and its operation safety is crucial. In systems such as alkaline electrolysis cells (ALK) or proton exchange membrane electrolysis cells (PEM), multiple electrolysis cells work in series, and physical isolation of hydrogen and oxygen is the fundamental measure to prevent explosion risks.

[0003] Currently, the mainstream safety control scheme in the industry relies on installing hydrogen-in-oxygen or oxygen-in-hydrogen online analyzers at the gas outlet pipeline for concentration monitoring, and using a passive response logic of "threshold alarm-emergency shutdown".

[0004] However, this traditional method has a risk warning lag; since the gas detection point is located at the end of the system for overall monitoring, there is an unavoidable physical time delay from early failures in the electrolysis cell interior (such as membrane micro-permeation, electrode local degradation) to the diffusion, mixing and final identification of the trace cross-gas by the remote analyzer. During this period, the safety hazard may have accumulated and even escalated, causing the system to only take shutdown measures after the risk has already appeared, which not only fails to achieve early intervention, but also easily causes non-planned shutdown due to disturbance false alarms, affecting production continuity and economy. SUMMARY

[0005] The purpose of the present application is to provide a safety control method, device, equipment and medium for a hydrogen production system by water electrolysis, to solve the problems of early warning lag, inability to identify early local faults and easy to cause unnecessary shutdown caused by passive response in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] In a first aspect, the present application provides a safety control method for a hydrogen production system by water electrolysis, comprising:

[0008] S1, real-time synchronous acquisition of real-time voltage values of each electrolysis cell in a series electrolysis cell;

[0009]

[0009] S2, based on the real-time voltage values of all electrolysis cells, calculating a real-time statistical feature representing voltage consistency, and establishing a dynamic baseline for the real-time statistical feature;

[0010] S3, comparing the real-time statistical feature with the corresponding dynamic baseline, if the deviation of the real-time statistical feature relative to the dynamic baseline meets a preset early warning condition, triggering an early consistency risk warning;

[0011] S4, in response to the early consistency risk warning, positioning at least one suspected fault cell based on the real-time voltage value of each electrolysis cell;

[0012] S5, according to at least one of the level of the early consistency risk warning and the positioning result of the suspected fault cell, performing a hierarchical active pressure regulation to adjust the pressure parameter of the gas path where the suspected fault cell is located.

[0013] Further, in step S2, the real-time statistical feature at least includes the standard deviation of the real-time voltage values of all electrolysis cells; and the dynamic baseline is the moving average of the standard deviation within a preset time window.

[0014] Further, in step S3, the preset warning condition is that the exceeding amplitude of the standard deviation relative to the moving average continuously reaches or exceeds a preset proportion, and this state lasts for a first preset time length.

[0015] Further, the positioning of at least one suspected fault cell based on the real-time voltage value of each electrolysis cell includes: calculating the voltage deviation degree of each electrolysis cell, and marking the cell with a voltage deviation degree greater than a preset positioning threshold as the suspected fault cell; the voltage deviation degree calculation formula is as follows:

[0016]

[0017] wherein, is the average of the real-time voltage values of all electrolysis cells, is the standard deviation of the real-time voltage values of all electrolysis cells, is the voltage deviation degree, is the real-time voltage value.

[0018] Further, the hierarchical active pressure regulation includes:

[0019] Primary regulation: when the early consistency risk warning is triggered and the suspected fault cell is located, adjust the pressure difference between the hydrogen side and the oxygen side of the electrolytic cell, so that it changes in the direction of inhibiting gas cross-seepage through the suspected fault cell diaphragm;

[0020] Secondary regulation: if the primary regulation is performed and the real-time statistical feature does not return to normal, further open the inert gas injection to the gas path where the suspected fault cell is located for purging.

[0021] Further, the method further comprises:

[0022] Step S6, collecting system operation data after the hierarchical active pressure regulation is performed, and adaptively optimizing the calculation parameters of the warning condition or the dynamic baseline based on the system operation data.

[0023] In a second aspect, the present application provides a safety control device of a hydrogen production system by water electrolysis, for implementing the method described above, comprising:

[0024] a voltage sensing array module, configured to synchronously collect real-time voltage values of each electrolytic cell in the series electrolytic cell in real time;

[0025] a data processing module, in communication connection with the voltage sensing array module, configured to calculate a real-time statistical feature representing voltage consistency based on the real-time voltage values of all electrolytic cells, and establish a dynamic baseline for the real-time statistical feature;

[0026] a safety analysis and decision module, in communication connection with the data processing module, configured to compare the real-time statistical feature with the corresponding dynamic baseline, and trigger an early consistency risk warning if the deviation of the real-time statistical feature relative to the dynamic baseline meets a preset early warning condition;

[0027] a positioning module, in communication connection with the safety analysis and decision module, configured to locate at least one suspected fault cell based on the real-time voltage values of each electrolytic cell in response to the early consistency risk warning;

[0028] an active pressure regulation execution module, in communication connection with the safety analysis and decision module and the positioning module, configured to perform a hierarchical active pressure regulation according to at least one of the level of the early consistency risk warning and the positioning result of the suspected fault cell, to adjust the pressure parameter of the gas path where the suspected fault cell is located.

[0029] Further, the active pressure regulation execution module comprises a differential pressure regulating valve and an inert gas injection valve; the differential pressure regulating valve is configured to adjust the pressure difference between the hydrogen side and the oxygen side of the electrolytic cell, and the inert gas injection valve is configured to inject inert gas into the designated gas path.

[0030] In a third aspect, the present application provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the method described above when executing the computer program.

[0031] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method described above.

[0032] Compared with the prior art, the safety control method, device, equipment and medium of the hydrogen production system by electrolysis of water provided by the application can realize early warning and accurate positioning to the suspected fault cell by synchronously collecting and analyzing the voltage data of all series electrolysis cells in real time, using the statistical characteristic change of voltage consistency as an early risk sensitive index, and can give an early warning before the fault occurs and the gas concentration exceeds the standard, and can accurately locate the suspected fault cell; then, the method can execute graded active pressure regulation based on the warning level, so as to inhibit the risk development in most cases and avoid unnecessary emergency shutdown, and significantly improve the early warning foresight, operation safety and availability of the system; in addition, the method can indirectly improve the system energy efficiency by maintaining the balance of the cells while ensuring safety, and provide a data basis for predictive maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0034] Figure 1 The method step block diagram provided by the embodiments of the present application. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail with reference to the drawings.

[0036] As shown in the accompanying Figure 1 As shown:

[0037] Embodiment one:

[0038] The present application provides a safety control method of a hydrogen production system by electrolysis of water, comprising:

[0039] S1, synchronously collecting the real-time voltage value of each electrolysis cell in the series electrolysis tank in real time;

[0040] The voltage sensing module deployed on the electrolysis tank is used to synchronously collect the real-time voltage value of each electrolysis cell in the series electrolysis tank at a sampling frequency of not less than 1 Hz The total number of electrolysis cells.

[0041] S2, based on the real-time voltage value of all electrolysis cells, calculating the real-time statistical characteristic representing voltage consistency, and establishing a dynamic baseline for the real-time statistical characteristic;

[0042] Specifically, in step S2, the real-time statistical characteristic at least includes the standard deviation of the real-time voltage value of all electrolysis cells; the dynamic baseline is the moving average of the standard deviation within a preset time window.

[0043] Calculate the statistical characteristics of all N cell voltages at the current sampling time t, including at least:

[0044] Average voltage:

[0045] Voltage standard deviation:

[0046] Simultaneously, a dynamic baseline is established for statistical characteristics. The moving average of the voltage standard deviation is calculated over a preset time window T (10 minutes). , which serves as the dynamic baseline reference value for the standard deviation at the current moment.

[0047] S3. Compare the real-time statistical features with the corresponding dynamic baseline. If the deviation of the real-time statistical features from the dynamic baseline meets the preset warning conditions, then trigger an early consistency risk warning.

[0048] Specifically, in step S3, the preset warning condition is: the standard deviation exceeds the moving average by a preset percentage continuously, and this state lasts for a first preset duration.

[0049] As shown above, early warning rules are set based on statistical processes. When real-time statistical characteristics deviate significantly from their corresponding dynamic baseline, an early consistency risk warning is triggered. Specific warning conditions include:

[0050] Condition A (Abnormally Increased Dispersion): Real-time Voltage Standard Deviation Continuously exceeding its dynamic baseline value A certain percentage (50%) reached the preset duration (30 seconds).

[0051] Condition B (Abnormal voltage distribution pattern): Calculate the skewness or kurtosis of the voltage distribution, and trigger an alarm when its absolute value exceeds a preset threshold.

[0052] If any of the early warning conditions are met, it is determined that the voltage consistency between the electrolysis chambers has been disrupted, indicating a risk of local fault, and an early warning signal is generated.

[0053] S4. In response to early consistency risk warning, locate at least one suspected faulty cell based on the real-time voltage value of each electrolysis cell;

[0054] Specifically, locating at least one suspected faulty cell based on the real-time voltage value of each electrolysis cell includes: calculating the voltage deviation of each electrolysis cell, and marking cells with a voltage deviation greater than a preset location threshold as suspected faulty cells; the formula for calculating the voltage deviation is as follows:

[0055]

[0056] in, This represents the average real-time voltage values ​​of all electrolysis cells. The standard deviation of the real-time voltage values ​​of all electrolysis cells. Voltage deviation, This is the real-time voltage value.

[0057] As shown above, once an early warning system is triggered, all cell voltages are immediately scanned and analyzed to locate abnormal cells. Specifically, this includes:

[0058] Calculate the deviation of each cell voltage from the current average voltage;

[0059] Cells with deviations greater than the preset positioning threshold (2.5 or 3) are marked as "suspected faulty cells". Based on the sign of the real-time voltage value relative to the average real-time voltage values ​​of all electrolysis cells, a preliminary assessment of the fault type can be made: low voltage may indicate a short circuit, abnormally high catalyst activity, or decreased membrane resistance in the cell; high voltage may indicate poor contact, partial blockage, or abnormally high membrane resistance in the cell.

[0060] S5. Based on at least one of the early consistency risk warning level and the location result of the suspected faulty compartment, perform graded active pressure control to adjust the pressure parameters of the gas path where the suspected faulty compartment is located.

[0061] Specifically, tiered proactive pressure control includes:

[0062] Level 1 control: When an early consistency risk warning is triggered and a suspected faulty cell is located, adjust the pressure difference between the hydrogen side and the oxygen side of the electrolyzer to change it in the direction of inhibiting the cross-permeation of the gas through the membrane of the suspected faulty cell.

[0063] Secondary control: If the real-time statistical characteristics do not return to normal after the primary control is executed, then the gas path of the suspected faulty chamber will be further purged by injecting inert gas.

[0064] As can be seen from the above: Based on the warning level and fault location results, a tiered, non-shutdown active control strategy is implemented. The core of the control strategy is to adjust the pressure difference between the hydrogen and oxygen sides in the area where the suspected faulty compartment is located.

[0065] Level 1 control (for early warning): When only condition A or B is triggered, and a few suspected cells are located, initiate micro differential pressure regulation. Fine-tune the pressure difference in a direction that helps suppress gas cross-contamination (for suspected cells with low voltage, slightly increase their oxygen-side pressure). Simultaneously, monitor the trend of the real-time voltage standard deviation after adjustment. If the real-time voltage standard deviation begins to fall and tends to stabilize, maintain this control parameter; otherwise, escalate the response.

[0066] Secondary control (for confirmed alarms): If primary control is ineffective, or the deviation exceeds a higher threshold (4), then local purging and enhanced differential pressure control are initiated. While maintaining differential pressure regulation, a low-flow inert gas (such as nitrogen) purging is initiated for the gas path of the suspected faulty chamber to further dilute and isolate potential risks;

[0067] Level 3 Response (Emergency Protection): If voltage consistency continues to deteriorate after the above adjustments, or if excessive gas purity is detected, system-level protection commands will be executed, including significant load reduction or emergency shutdown. At this time, the system can provide precise fault location information.

[0068] Specifically, the methods also include:

[0069] Step S6: Collect system operation data after implementing graded active pressure regulation, and adaptively optimize the calculation parameters of early warning conditions or dynamic baselines based on the system operation data.

[0070] The system operation data (including voltage data, control commands, and gas purity data) after active control is fed back to the early warning and positioning model to verify the control effect. The parameters such as the early warning threshold and dynamic baseline calculation window are adaptively optimized through machine learning algorithms (such as online recursive least squares method) to form a closed-loop control system.

[0071] Example 2:

[0072] This embodiment provides a safety control device for a water electrolysis hydrogen production system, used to implement the above-mentioned method, including:

[0073] The voltage sensing array module is used to synchronously acquire the real-time voltage value of each electrolysis cell in the series electrolytic cell.

[0074] Specifically, the voltage sensing array module consists of N high-precision isolated voltage sensors, which are connected one-to-one to each electrolysis cell of the electrolytic cell to collect the voltage signal of each cell in real time.

[0075] The data processing module, which is connected in communication with the voltage sensing array module, is used to calculate real-time statistical characteristics that characterize voltage consistency based on the real-time voltage values ​​of all electrolysis cells, and to establish a dynamic baseline for the real-time statistical characteristics.

[0076] The security analysis and decision module communicates with the data processing module and is used to compare real-time statistical features with the corresponding dynamic baseline. If the deviation of the real-time statistical features from the dynamic baseline meets the preset warning conditions, an early consistency risk warning is triggered.

[0077] The positioning module, which communicates with the safety analysis and decision module, is used to respond to early consistency risk warnings and locate at least one suspected faulty cell based on the real-time voltage value of each electrolysis cell.

[0078] The active pressure regulation execution module communicates with the safety analysis and decision module and the positioning module. It is used to perform graded active pressure regulation and adjust the pressure parameters of the gas path where the suspected faulty compartment is located based on at least one of the early consistent risk warning level and the positioning results of the suspected faulty compartment.

[0079] Specifically, the active pressure control execution module includes a differential pressure regulating valve and an inert gas injection valve; the differential pressure regulating valve is used to regulate the pressure difference between the hydrogen side and the oxygen side of the electrolyzer, and the inert gas injection valve is used to inject inert gas into a designated gas path.

[0080] Example 3:

[0081] This embodiment provides a computer device, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method described above.

[0082] Example 4:

[0083] This embodiment provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described method.

[0084] Example 5:

[0085] This embodiment is applied to an alkaline water electrolysis hydrogen production system with 100 electrolysis chambers connected in series.

[0086] Hardware configuration:

[0087] Voltage sensing array module: Employs 100 high-precision isolated DC voltage transmitters to measure the voltage across each electrolysis chamber (typically approximately 1-3V DC). All transmitters ensure data acquisition synchronization via synchronous trigger signals and upload data via an industrial fieldbus (such as RS-485).

[0088] Data processing and decision-making unit: An industrial edge computing controller is used, and the programs running inside it constitute a data processing module, a security analysis and decision-making module, and a positioning module.

[0089] Active pressure regulation execution module:

[0090] Differential pressure regulating valve: Utilizes the existing precision pressure regulating valves on the hydrogen and oxygen side main pipelines of the system;

[0091] Inert gas injection valve: Nitrogen injection valves with micro-adjustment function and corresponding flow meters are added to the pipelines after the gas separators on the hydrogen and oxygen sides, respectively.

[0092] Software implementation process:

[0093] The edge controller synchronously reads the voltage values ​​V1 to V100 of 100 electrolysis cells at a frequency of 10 times per second.

[0094] The average and standard deviation of these 100 voltage values ​​are calculated in real time. Simultaneously, the moving average of the standard deviation over the past 10 minutes is calculated as the dynamic baseline for the current standard deviation.

[0095] The warning rule is set so that if the real-time standard deviation exceeds 50% of its dynamic baseline value for 30 consecutive seconds, it is determined that the voltage consistency between the electrolysis chambers is abnormal and the "early consistency risk warning" signal is triggered.

[0096] Upon triggering the warning, the voltage deviation of each cell is immediately calculated, which is the absolute value of (cell voltage - average voltage) divided by the standard deviation. The location threshold is set to 2.5. Calculations show that the deviation of cell 35 reaches 3.1, and its voltage is lower than the average voltage, while the deviations of other cells are all less than 2.0. Therefore, cell 35 is marked as a "suspected fault cell," and it is preliminarily determined that there may be a fault that causes its voltage drop (such as a minor short circuit or abnormal decrease in membrane resistance).

[0097] Tiered active pressure regulation:

[0098] Primary control: The controller sends a command to the oxygen-side main pipeline pressure regulating valve to gently increase the oxygen-side system pressure by 8 kPa (from 1.000 MPa to 1.008 MPa) within 1 minute, thereby slightly increasing the hydrogen-oxygen pressure difference and suppressing possible hydrogen permeation into the anode;

[0099] After adjustment, continuously monitor the voltage standard deviation and the deviation of cell 35. If, within the next 3 minutes, the standard deviation begins to decrease and stabilizes, and the deviation falls below 3.0, the first-level adjustment is considered effective; maintain the current state and record the data in the log. If the standard deviation and deviation continue to rise, initiate the second-level adjustment.

[0100] Secondary control: While maintaining the differential pressure, the controller opens the nitrogen injection valve to the oxygen-side gas chamber near compartment 35, purging at a flow rate of 1 liter per minute to further dilute and isolate potentially hazardous gases. Simultaneously, a clear alarm is sent to the central control room, indicating that "compartment 35 requires planned inspection."

[0101] The system continuously records all operational data. Each week, it automatically fine-tunes parameters such as "preset ratio" and "first preset duration" in the warning rules using recent data, enabling the system to adapt to the slow performance changes that may occur as the equipment runs for longer periods.

[0102] Performance Verification: In the simulation test, a controllable micro-simulated defect was created in chamber 35. Traditional gas analyzers only detected the excessive hydrogen concentration (reaching 2.1%) in oxygen and triggered an alarm approximately 6 minutes after the defect occurred. Using the method of this invention, the voltage standard deviation triggered an early warning approximately 70 seconds after the defect occurred, and the system was successfully stabilized through primary pressure regulation. Throughout the entire one-hour test cycle, the purity of the outlet gas remained within a safe range, and the system did not require an emergency shutdown. This fully demonstrates the superior effectiveness of this invention in early risk warning and avoiding unnecessary shutdowns.

[0103] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A safety control method for a water electrolysis hydrogen production system, characterized in that, include: S1. Real-time synchronous acquisition of the real-time voltage value of each electrolysis cell in the series electrolytic cell; S2. Based on the real-time voltage values ​​of all electrolysis cells, calculate the real-time statistical characteristics characterizing voltage consistency, and establish a dynamic baseline for the real-time statistical characteristics; S3. Compare the real-time statistical features with the corresponding dynamic baseline. If the deviation of the real-time statistical features from the dynamic baseline meets the preset warning conditions, then trigger an early consistency risk warning. S4. In response to the early consistency risk warning, locate at least one suspected faulty cell based on the real-time voltage value of each electrolysis cell; S5. Based on at least one of the early consistency risk warning level and the location result of the suspected faulty compartment, perform graded active pressure regulation to adjust the pressure parameters of the gas path where the suspected faulty compartment is located.

2. The safety control method for a water electrolysis hydrogen production system according to claim 1, characterized in that, In step S2, the real-time statistical features include at least the standard deviation of the real-time voltage values ​​of all electrolysis cells; the dynamic baseline is the moving average of the standard deviation within a preset time window.

3. The safety control method for a water electrolysis hydrogen production system according to claim 2, characterized in that, In step S3, the preset warning condition is: the standard deviation exceeds the moving average by a preset percentage continuously, and this state lasts for a first preset duration.

4. The safety control method for a water electrolysis hydrogen production system according to claim 1, characterized in that, The step of locating at least one suspected faulty cell based on the real-time voltage value of each electrolysis cell includes: calculating the voltage deviation of each electrolysis cell, and marking cells with a voltage deviation greater than a preset location threshold as the suspected faulty cells; the voltage deviation calculation formula is as follows: in, This represents the average real-time voltage values ​​of all electrolysis cells. The standard deviation of the real-time voltage values ​​of all electrolysis cells. Voltage deviation, This is the real-time voltage value.

5. The safety control method for a water electrolysis hydrogen production system according to claim 1, characterized in that, The graded active pressure regulation includes: Level 1 control: When the early consistency risk warning is triggered and the suspected faulty chamber is located, the pressure difference between the hydrogen side and the oxygen side of the electrolyzer is adjusted to change in the direction of inhibiting the cross-permeation of the gas through the membrane of the suspected faulty chamber. Secondary control: If the real-time statistical characteristics do not return to normal after the primary control is performed, then inert gas is injected into the gas path where the suspected faulty chamber is located for purging.

6. The safety control method for a water electrolysis hydrogen production system according to claim 1, characterized in that, The method further includes: S6. Collect system operation data after the implementation of the graded active pressure regulation, and adaptively optimize the calculation parameters of the early warning conditions or the dynamic baseline based on the system operation data.

7. A safety control device for a water electrolysis hydrogen production system, used to implement the method according to any one of claims 1-6, characterized in that, include: The voltage sensing array module is used to synchronously acquire the real-time voltage value of each electrolysis cell in the series electrolytic cell. The data processing module is communicatively connected to the voltage sensing array module and is used to calculate real-time statistical features characterizing voltage consistency based on the real-time voltage values ​​of all electrolysis cells, and to establish a dynamic baseline for the real-time statistical features. The security analysis and decision module is communicatively connected to the data processing module and is used to compare the real-time statistical features with the corresponding dynamic baseline. If the deviation of the real-time statistical features from the dynamic baseline meets the preset warning conditions, an early consistency risk warning is triggered. The positioning module is communicatively connected to the safety analysis and decision module and is used to locate at least one suspected faulty cell based on the real-time voltage value of each electrolysis cell in response to the early consistency risk warning. The active pressure regulation execution module is communicatively connected to the safety analysis and decision module and the positioning module. It is used to perform graded active pressure regulation based on at least one of the early consistency risk warning level and the positioning result of the suspected fault compartment, and to adjust the pressure parameters of the gas path where the suspected fault compartment is located.

8. The safety control device for a water electrolysis hydrogen production system according to claim 7, characterized in that, The active pressure control execution module includes a differential pressure regulating valve and an inert gas injection valve; the differential pressure regulating valve is used to regulate the pressure difference between the hydrogen side and the oxygen side of the electrolyzer, and the inert gas injection valve is used to inject inert gas into a designated gas path.

9. A computer device, comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor executes the computer program to implement the method of any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1-6.