Collaborative Support Method and Energy Management Platform for Hydrogen Production and Storage Devices via Water Electrolysis

Abstract

This invention relates to the technical field of hydrogen production through water electrolysis, and discloses a collaborative support method and energy management platform for hydrogen production through water electrolysis energy storage devices. The platform includes a data acquisition layer, a collaborative control layer, and an execution layer. Instantaneous charge and discharge compensation is performed by the energy storage device to cover the response vacuum period during the initial stage of hydrogen production power ramp-up. Simultaneously, a stepped hydrogen production power adjustment mechanism is adopted to adjust the single power change amplitude to be lower than the rated power and adjacent adjustment intervals, forming a multi-timescale collaborative chain of "instantaneous energy storage compensation + stable hydrogen production follow-up." Through the hydrogen production start-up threshold and the energy storage device start-up threshold, combined with the energy storage power dynamic calculation model, the discharge power is linearly adjusted in real time following the frequency deviation amplitude, achieving intelligent division of labor of "high-frequency fluctuation energy storage main control and continuous fluctuation hydrogen production relay."

Description

Technical Field

[0001] This invention relates to the technical field of hydrogen production by water electrolysis, specifically to a collaborative support method and energy management platform for hydrogen production and storage devices by water electrolysis. Background Technology

[0002] With the continued expansion of global industrial and economic activities, the need to reduce carbon emissions has become an urgent issue. To address this problem, hydrogen is considered a next-generation energy source due to its zero carbon emissions, lack of toxic byproducts, and high energy density. The electricity generated by water electrolysis to produce hydrogen can be derived from renewable energy sources such as solar, wind, hydro, and geothermal energy. This conversion between these sustainable energy sources not only enables the storage of renewable energy through water electrolysis into chemical fuels but also bridges the gaps in sustainable energy supply over time and space. Therefore, water electrolysis for hydrogen production is a promising green hydrogen production route.

[0003] The main shortcomings of existing energy storage support methods and energy management platforms for water electrolysis hydrogen production and energy storage devices include:

[0004] 1. Single device regulation failure: Relying solely on hydrogen production for frequency regulation only addresses the power regulation issue and does not solve the response delay problem. While pure energy storage frequency regulation improves the response speed, the SOC boundary effect leads to insufficient continuous support capacity.

[0005] 2. Lack of coordination mechanism: Current hybrid control systems mostly adopt a simple power superposition strategy: dynamic power allocation logic is not established, energy storage is discharged first, but after the capacity is exhausted, hydrogen production has not yet completed the power ramp-up, the dynamic characteristics of the equipment are ignored, and the membrane electrode stress fatigue life of the electrolyzer decreases under frequent start-up and shutdown conditions.

[0006] 3. Economic imbalance: Over-allocation of energy storage extends the investment payback period of projects, and hydrogen production costs increase due to adjustment losses.

[0007] Therefore, in response to the above problems, the present invention provides a collaborative support method and energy management platform for water electrolysis hydrogen production and storage devices, which can integrate multi-timescale response, dynamic power allocation and equipment protection mechanisms for collaborative control, thereby extending equipment life and reducing system costs while ensuring grid frequency stability. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a collaborative support method and energy management platform for water electrolysis hydrogen production and storage devices, thus solving the problems mentioned in the background section.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the present invention provides the following technical solution: a collaborative support method and energy management platform for a water electrolysis hydrogen production and storage device, wherein the method includes the following steps:

[0012] S1. Real-time monitoring of power grid frequency: Collect real-time frequency data of the power grid through power monitoring devices and calculate the frequency deviation value;

[0013] S2. Set the coordinated response threshold: Based on the historical frequency fluctuation range of the power grid, set the first response threshold for water electrolysis to produce hydrogen and the second response threshold for the energy storage device respectively.

[0014] S3, Dynamic Allocation and Adjustment Command: When the frequency deviation value exceeds the first response threshold, a power adjustment command for hydrogen production by water electrolysis is generated; when the frequency deviation value exceeds the second response threshold but is lower than the first response threshold, a charge and discharge command for the energy storage device is generated.

[0015] S4. Stepped adjustment of hydrogen production power: The hydrogen production power of water electrolysis is gradually increased and decreased according to a preset time gradient. The single adjustment range is less than 10% of the rated power, and the interval between adjacent adjustments is more than 30 seconds.

[0016] S5, Instantaneous charge and discharge compensation: Controls the energy storage device to respond to charge and discharge commands within 100 milliseconds to compensate for the power regulation delay of water electrolysis for hydrogen production;

[0017] S6. Feedback and Coordination Effect: Real-time calculation of frequency deviation recovery rate. When the recovery rate is lower than the set target value, the electrolysis of water to produce hydrogen and the energy storage device will perform power superposition compensation.

[0018] Preferably, the calculation of the frequency deviation value in S1 includes the following steps:

[0019] The fundamental frequency component of the power grid is extracted using Fourier transform, and a frequency time-series curve is generated with a sampling period of 0.1 seconds; a frequency reference value is set. For 50Hz, according to the formula Calculate the deviation value. It can be negative, when it is within 5 consecutive sampling periods. At Hz, a frequency over-limit alarm is triggered, where This represents the power grid frequency deviation value. For real-time frequency measurement of the power grid, Power grid reference frequency.

[0020] Preferably, setting the coordinated response threshold in S2 includes: obtaining the peak frequency fluctuation of the power grid over the past 24 hours. Set according to the following rules:

[0021] First response threshold ;

[0022] Second response threshold ;

[0023] in, and The dynamic update cycle is 1 hour.

[0024] Preferably, the logic for dynamically allocating adjustment instructions in S3 is as follows:

[0025] when Then, the power reduction command for hydrogen production via water electrolysis will be executed, and the reduction amount will be... ,in This is the hydrogen production power adjustment coefficient. The amount of power reduction for hydrogen production via water electrolysis;

[0026] and Then the energy storage device executes the discharge command, and the discharge power... ,in This is the energy storage power regulation coefficient; The discharge power of the energy storage device; when In this case, the hydrogen production process via water electrolysis executes a power increase command, and the energy storage device simultaneously executes a charging command.

[0027] Preferably, the stepped adjustment of hydrogen production power in S4 includes a protection mechanism:

[0028] When the temperature change rate of the electrolytic cell exceeds 5℃ / minute and the voltage fluctuation rate exceeds 10%, power regulation is suspended and cooling protection is activated.

[0029] During the power increase phase, electrolytic cell units in the high-efficiency operating range are activated first, while inefficient load ranges are avoided.

[0030] Preferably, the response of the energy storage device in S5 needs to satisfy:

[0031] The operating state of charge (SOC) is maintained at 60%, and the discharge mode is forcibly exited when the SOC is less than 20%.

[0032] A hybrid topology of battery and supercapacitor is adopted, with the supercapacitor handling high-frequency fluctuation compensation within 2 seconds.

[0033] Preferably, the power superposition compensation in S6 includes:

[0034] When frequency deviation recovery rate At that time, according to the formula:

[0035] ;

[0036] in, Frequency deviation recovery rate, range 0 100%, This represents the absolute value of the initial frequency deviation, in Hz. The absolute value of the frequency deviation at the current moment, in Hz, is then calculated using the formula:

[0037] ;

[0038] Calculate the compensation power gap, and use water electrolysis to produce hydrogen. Of the compensation amount, the energy storage device will bear the remaining 30%.

[0039] in The total power to be compensated is required. For frequency deviation recovery rate, For the unrecovered power gap, This represents the proportion of unrecovered deviations.

[0040] Preferred platforms include:

[0041] Data acquisition layer: The PMU synchronous phasor measurement unit acquires the grid frequency, voltage, and operating parameters for hydrogen production via water electrolysis.

[0042] Collaborative control layer: Includes built-in frequency deviation analysis module, power allocation optimization algorithm module, and fault diagnosis module;

[0043] Execution layer: includes hydrogen production power converter interface, energy storage PCS converter interface and GOOSE high-speed communication protocol stack.

[0044] Preferably, the collaborative control layer further includes:

[0045] The power allocation optimization algorithm module adopts a two-level decision structure:

[0046] The upper layer aims to minimize the grid frequency recovery time and solves for the optimal power ratio of hydrogen production by water electrolysis and energy storage devices.

[0047] The lower layer generates the electrolytic cell start-up and shutdown sequence and the energy storage charge-discharge depth limit value based on the constraint of minimizing equipment loss cost.

[0048] Preferably, the execution layer ensures real-time performance in the following ways:

[0049] The frequency deviation calculation task is processed using an FPGA hardware accelerator, and the latency is compressed to less than 10 milliseconds.

[0050] Commands for the water electrolysis hydrogen production and energy storage device are transmitted synchronously via an optical fiber ring network, with an end-to-end latency of less than 5 milliseconds.

[0051] (III) Beneficial Effects

[0052] Compared with existing technologies, this invention provides a collaborative support method and energy management platform for a water electrolysis hydrogen production and storage device, which has the following beneficial effects:

[0053] 1. Resolve the response speed mismatch defect and achieve millisecond-level and minute-level control coordination:

[0054] Instantaneous charge and discharge compensation is performed by energy storage devices to cover the response vacuum period in the early stage of hydrogen production power ramp-up; at the same time, a stepped hydrogen production power adjustment mechanism is adopted to adjust the single power change amplitude to be lower than the rated power and the adjacent adjustment interval, forming a multi-timescale collaborative chain of "instantaneous energy storage compensation + stable hydrogen production follow-up".

[0055] 2. Address the pain point of lack of dynamic coupling by establishing an intelligent adaptive power allocation mechanism:

[0056] The response threshold is dynamically updated based on historical frequency fluctuation peaks.

[0057] By setting hydrogen production start-up thresholds and energy storage device start-up thresholds, and combining them with a dynamic calculation model for energy storage power, the discharge power is linearly adjusted in real time to follow the frequency deviation amplitude, thus achieving an intelligent division of labor of "high-frequency fluctuation energy storage as the main controller and continuous fluctuation hydrogen production as the relay".

[0058] 3. Eliminate blind spots in equipment protection and build a triple active protection system:

[0059] (1) Temperature protection: stepped power regulation forced electrolytic cell temperature change rate;

[0060] (2) Voltage protection: Real-time monitoring of the electrolytic cell terminal voltage, and automatic suspension of adjustment when the fluctuation rate increases;

[0061] (3) Lifespan optimization: The energy storage system strictly limits the state of charge, and the supercapacitor bears the high-frequency impact. Attached Figure Description

[0062] Figure 1 This is a schematic diagram of the overall system architecture of the present invention;

[0063] Figure 2 This is a flowchart of the method of the present invention. Detailed Implementation

[0064] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] Please see Figure 1-2 The collaborative support method and energy management platform for the water electrolysis hydrogen production and storage device

[0066] S1. Real-time monitoring of power grid frequency: Collect real-time frequency data of the power grid through power monitoring devices and calculate the frequency deviation value;

[0067] S2. Set the coordinated response threshold: Based on the historical frequency fluctuation range of the power grid, set the first response threshold for water electrolysis to produce hydrogen and the second response threshold for the energy storage device respectively.

[0068] S3, Dynamic Allocation and Adjustment Command: When the frequency deviation value exceeds the first response threshold, a power adjustment command for hydrogen production by water electrolysis is generated; when the frequency deviation value exceeds the second response threshold but is lower than the first response threshold, a charge and discharge command for the energy storage device is generated.

[0069] S4. Stepped adjustment of hydrogen production power: The hydrogen production power of water electrolysis is gradually increased and decreased according to a preset time gradient. The single adjustment range is less than 10% of the rated power, and the interval between adjacent adjustments is more than 30 seconds.

[0070] S5, Instantaneous charge and discharge compensation: Controls the energy storage device to respond to charge and discharge commands within 100 milliseconds to compensate for the power regulation delay of water electrolysis for hydrogen production;

[0071] S6. Feedback and Coordination Effect: Real-time calculation of frequency deviation recovery rate. When the recovery rate is lower than the set target value, the electrolysis of water to produce hydrogen and the energy storage device will perform power superposition compensation.

[0072] The calculation of the frequency deviation value in S1 includes the following steps:

[0073] The fundamental frequency component of the power grid is extracted using Fourier transform, and a frequency time-series curve is generated with a sampling period of 0.1 seconds; a frequency reference value is set. For 50Hz, according to the formula Calculate the deviation value. It can be negative, when it is within 5 consecutive sampling periods. At Hz, a frequency over-limit alarm is triggered, where This represents the power grid frequency deviation value. For real-time frequency measurement of the power grid, Power grid reference frequency.

[0074] The coordinated response threshold set in S2 includes: obtaining the peak frequency fluctuation of the power grid over the past 24 hours. Set according to the following rules:

[0075] First response threshold ;

[0076] Second response threshold ;

[0077] in, and The dynamic update cycle is 1 hour.

[0078] The logic for dynamically allocating adjustment instructions in S3 is as follows:

[0079] when Then, the power reduction command for hydrogen production via water electrolysis will be executed, and the reduction amount will be... ,in This is the hydrogen production power adjustment coefficient. The amount of power reduction for hydrogen production via water electrolysis;

[0080] and Then the energy storage device executes the discharge command, and the discharge power... ,in This is the energy storage power regulation coefficient; This refers to the discharge power of the energy storage device.

[0081] when In this case, the hydrogen production process via water electrolysis executes a power increase command, and the energy storage device simultaneously executes a charging command.

[0082] S4's stepped regulation of hydrogen production power includes a protection mechanism:

[0083] When the temperature change rate of the electrolytic cell exceeds 5℃ / minute and the voltage fluctuation rate exceeds 10%, power regulation is suspended and cooling protection is activated.

[0084] During the power increase phase, electrolytic cell units in the high-efficiency operating range are activated first, while inefficient load ranges are avoided.

[0085] The response of the energy storage device in S5 must meet the following requirements:

[0086] The operating state of charge (SOC) is maintained at 60%, and the discharge mode is forcibly exited when the SOC is less than 20%.

[0087] A hybrid topology of battery and supercapacitor is adopted, with the supercapacitor handling high-frequency fluctuation compensation within 2 seconds.

[0088] The power superposition compensation in S6 includes:

[0089] When frequency deviation recovery rate At that time, according to the formula:

[0090] ;

[0091] in, Frequency deviation recovery rate, range 0 100%, This represents the absolute value of the initial frequency deviation, in Hz. The absolute value of the frequency deviation at the current moment, in Hz, is then calculated using the formula:

[0092] ;

[0093] Calculate the compensation power gap, and use water electrolysis to produce hydrogen. Of the compensation amount, the energy storage device will bear the remaining 30%.

[0094] in The total power to be compensated is required. For frequency deviation recovery rate, For the unrecovered power gap, This represents the proportion of unrecovered deviations.

[0095] The platform includes:

[0096] Data acquisition layer: The PMU synchronous phasor measurement unit acquires the grid frequency, voltage, and operating parameters for hydrogen production via water electrolysis.

[0097] Collaborative control layer: Includes built-in frequency deviation analysis module, power allocation optimization algorithm module, and fault diagnosis module;

[0098] Execution layer: includes hydrogen production power converter interface, energy storage PCS converter interface and GOOSE high-speed communication protocol stack.

[0099] The collaborative control layer further includes:

[0100] The power allocation optimization algorithm module adopts a two-level decision structure:

[0101] The upper layer aims to minimize the grid frequency recovery time and solves for the optimal power ratio of hydrogen production by water electrolysis and energy storage devices.

[0102] The lower layer generates the electrolytic cell start-up and shutdown sequence and the energy storage charge-discharge depth limit value based on the constraint of minimizing equipment loss cost.

[0103] The execution layer ensures real-time performance through the following methods:

[0104] The frequency deviation calculation task is processed using an FPGA hardware accelerator, and the latency is compressed to less than 10 milliseconds.

[0105] Commands for the water electrolysis hydrogen production and energy storage device are transmitted synchronously via an optical fiber ring network, with an end-to-end latency of less than 5 milliseconds.

[0106] Example 1: Wind farm frequency drop scenario:

[0107] 1. System Configuration:

[0108] In a 200MW wind farm, 20 alkaline electrolyzers are deployed for hydrogen production, each with a rated power of 5MW; 40 lithium-ion energy storage units are installed, each with a capacity of 1MW / 4MWh; 10 supercapacitors are added, each with a capacity of 0.5MW / 0.1MWh; the control core uses an FPGA processor and a fiber optic ring network to form an energy management platform.

[0109] 2. Implementation process:

[0110] When the power grid frequency was detected to drop sharply from 50.00Hz to 49.45Hz:

[0111] (1) Dynamic threshold triggering:

[0112] The historical maximum frequency deviation was 0.72Hz.

[0113] The hydrogen production start-up threshold is 70% of 0.72 Hz, which is 0.50 Hz;

[0114] The energy storage start-up threshold is 30% of 0.72Hz, which is 0.22Hz;

[0115] (2) Collaborative control execution:

[0116] The energy storage system discharged 0.99MW within 100 milliseconds;

[0117] The supercapacitor carries 0.3MW of high-frequency components in the first 2 seconds;

[0118] Hydrogen production is reduced in three stages:

[0119] The percentage dropped from 100% to 90% at second 0.

[0120] The percentage dropped from 90% to 80% in the 30th second.

[0121] The percentage dropped from 80% to 70% at the 60th second.

[0122] (3) Equipment protection mechanism:

[0123] The real-time monitoring showed that the rate of temperature change in the electrolytic cell was less than 4.2℃ / minute;

[0124] The energy storage state of charge is maintained within the safe range of 45%.

[0125] Example 2: Cloud shading fluctuation scenario at a photovoltaic base:

[0126] 1. System Configuration:

[0127] The 500MW photovoltaic base is equipped with 30 sets of proton exchange membrane electrolyzers, each with a power of 10MW; and 20 sets of vanadium redox flow electrolyzers.

[0128] Each pool has 2MW / 10MWh of energy storage; 15 additional supercapacitors have been installed, each with 1MW / 0.2MWh.

[0129] 2. Implementation process:

[0130] When cloud cover causes photovoltaic output to drop from 400MW to 150MW within 3 minutes, and the frequency drops to 49.30Hz:

[0131] (1) Dynamic power allocation:

[0132] The reduction in hydrogen production capacity is calculated by multiplying the coefficient by 0.9, the deviation by 0.70 Hz, and then by the 300 MW baseline, resulting in 189 MW.

[0133] The energy storage discharge power is calculated to be 1.54MW by multiplying the coefficient by 2.2 and the Hz deviation by 0.70.

[0134] (2) Step-by-step adjustment execution:

[0135] Initial power remains at 100%;

[0136] It dropped to 85% in 30 seconds;

[0137] The percentage dropped to 70% in 60 seconds;

[0138] (3) Boundary protection strategy:

[0139] The state of charge of the flow battery decreased from 55% to 48%.

[0140] The voltage fluctuation rate of the electrolytic cell is controlled within 5%;

[0141] Example 3: Emergency Scenario for Microgrid Collapse on an Island;

[0142] 1. System Configuration:

[0143] The island microgrid is equipped with 5 solid oxide electrolyzers, each with a power of 2MW; 8 sets of zinc-air battery energy storage, each with a power of 0.5MW / 2MWh; and 6 sets of flywheel energy storage, each with a power of 0.2MW / 0.05MWh.

[0144] 2. Implementation process:

[0145] By monitoring the frequency deviation in real time, and calculating using the η formula, 35% is obtained. When the main diesel generator trips, causing a 35% load shortfall and the frequency collapses to 48.80Hz:

[0146] (1) Emergency power compensation:

[0147] The calculated unrecovered power shortfall is 4.2MW;

[0148] Based on a 65% recovery rate shortfall, the additional power output is 1.47MW.

[0149] (2) Multi-device collaboration:

[0150] Flywheel energy storage can respond to 0.4MW within 100 milliseconds;

[0151] Compensation is initiated within 500 milliseconds in the zinc-air cell;

[0152] Hydrogen production capacity is 1.03MW;

[0153] The energy storage system will handle 0.44MW;

[0154] (3) Fault protection mechanism:

[0155] The electrolytic cell will automatically stop when the voltage fluctuation exceeds 8%.

[0156] Flywheel energy storage can handle 90% of high-frequency fluctuations.

[0157] Example 4: Midday load surge scenario in regional power grid:

[0158] 1. System Configuration:

[0159] The 500MW hydropower station in the regional power grid is equipped with 15 sets of proton exchange membrane electrolyzers for hydrogen production, each with a power of 10MW; 25 sets of lithium iron phosphate battery energy storage units are configured, each with a capacity of 2MW / 8MWh; the control platform adopts a dual FPGA redundancy architecture and a dedicated 5G communication network.

[0160] 2. Implementation process:

[0161] When a sudden increase in load at midday causes the frequency to drop from 50.00Hz to 49.35Hz:

[0162] (1) Dynamic threshold setting:

[0163] The maximum frequency deviation over the past 12 hours was 0.85 Hz;

[0164] The hydrogen production start-up threshold is 70% of 0.85Hz, which is 0.60Hz;

[0165] The energy storage start-up threshold is 30% of 0.85Hz, which is 0.26Hz;

[0166] (2) Collaborative response execution:

[0167] The energy storage system discharged 1.43MW within 80 milliseconds;

[0168] Hydrogen production is regulated in three stages:

[0169] The power dropped from 100% to 92% at second 0.

[0170] The power level dropped from 92% to 84% in the 30th second.

[0171] At the 60th second, the power dropped from 84% to 76%.

[0172] (3) Protection mechanism activated:

[0173] Real-time monitoring shows that the voltage fluctuation rate of the electrolytic cell remains stable within 6%.

[0174] The energy storage state of charge decreased from 68% to 61%;

[0175] Example 5: Frequency Modulation Auxiliary Scenario in Nuclear Power Plants:

[0176] 1. System Configuration:

[0177] The 1000MW nuclear power plant will be equipped with 40 high-temperature solid oxide electrolyzers, each with a power of 5MW; 30 sets of vanadium redox flow batteries will be deployed for energy storage, each with a power of 3MW / 12MWh; and the control system will use optical quantum computing chips for backup communication with low-Earth orbit satellites.

[0178] 2. Implementation process:

[0179] When a nearby wind farm disconnects from the grid, causing the frequency to drop sharply from 50.00Hz to 49.28Hz:

[0180] (1) Emergency power distribution:

[0181] The reduction in hydrogen production capacity is calculated as 122.4MW based on a coefficient of 0.85 × 0.72Hz deviation × 200MW.

[0182] The energy storage discharge power is calculated to be 1.37MW with a factor of 1.9 × 0.72Hz deviation.

[0183] (2) Step-by-step adjustment execution:

[0184] Initial power remains at 100%;

[0185] The percentage dropped to 88% in the 30th second;

[0186] The percentage dropped to 76% in 60 seconds;

[0187] (3) Extreme operating condition protection:

[0188] The temperature change rate of the electrolytic cell was controlled at 3.8℃ / minute;

[0189] The electrolyte temperature alarm threshold for flow batteries is set to 45℃.

[0190] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0191] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A collaborative support method for a water electrolysis hydrogen production and storage device, characterized in that: Includes the following steps: S1. Real-time monitoring of power grid frequency: Collect real-time frequency data of the power grid through power monitoring devices and calculate the frequency deviation value; S2. Set the coordinated response threshold: Based on the historical frequency fluctuation range of the power grid, set the first response threshold for water electrolysis to produce hydrogen and the second response threshold for the energy storage device respectively. S3, Dynamic Allocation and Adjustment Command: When the frequency deviation value exceeds the first response threshold, a power adjustment command for hydrogen production by water electrolysis is generated; when the frequency deviation value exceeds the second response threshold but is lower than the first response threshold, a charge and discharge command for the energy storage device is generated. S4. Stepped adjustment of hydrogen production power: The hydrogen production power of water electrolysis is gradually increased and decreased according to a preset time gradient. The single adjustment range is less than 10% of the rated power, and the interval between adjacent adjustments is more than 30 seconds. S5, Instantaneous charge and discharge compensation: Controls the energy storage device to respond to charge and discharge commands within 100 milliseconds to compensate for the power regulation delay of water electrolysis for hydrogen production; S6. Feedback and Coordination Effect: Real-time calculation of frequency deviation recovery rate. When the recovery rate is lower than the set target value, the electrolysis of water to produce hydrogen and the energy storage device will perform power superposition compensation.

2. The collaborative support method for the water electrolysis hydrogen production and storage device according to claim 1, characterized in that, The calculation of the frequency deviation value in S1 includes the following steps: The fundamental frequency component of the power grid is extracted using Fourier transform, and a frequency time-series curve is generated with a sampling period of 0.1 seconds; a frequency reference value is set. For 50Hz, according to the formula Calculate the deviation value. It can be negative, when it is within 5 consecutive sampling periods. At Hz, a frequency over-limit alarm is triggered, among which... This represents the power grid frequency deviation value. For real-time frequency measurement of the power grid, Power grid reference frequency.

3. The collaborative support method for the water electrolysis hydrogen production and storage device according to claim 1, characterized in that, The coordinated response threshold set in S2 includes: obtaining the peak frequency fluctuation of the power grid over the past 24 hours. Set according to the following rules: First response threshold ; Second response threshold ; in, and The dynamic update cycle is 1 hour.

4. The collaborative support method for the water electrolysis hydrogen production and storage device according to claim 1, characterized in that, The logic for dynamically allocating adjustment instructions in S3 is as follows: when Then, the power reduction command for hydrogen production via water electrolysis will be executed, and the reduction amount will be... ,in This is the hydrogen production power adjustment coefficient. The amount of power reduction for hydrogen production via water electrolysis; and Then the energy storage device executes the discharge command, and the discharge power... ,in This is the energy storage power regulation coefficient; This refers to the discharge power of the energy storage device. when In this case, the hydrogen production process via water electrolysis executes a power increase command, and the energy storage device simultaneously executes a charging command.

5. The collaborative support method for the water electrolysis hydrogen production and storage device according to claim 1, characterized in that, The stepped adjustment of hydrogen production power in S4 includes a protection mechanism: When the temperature change rate of the electrolytic cell exceeds 5℃ / minute and the voltage fluctuation rate exceeds 10%, power regulation is suspended and cooling protection is activated. During the power increase phase, electrolytic cell units in the high-efficiency operating range are activated first, while inefficient load ranges are avoided.

6. The collaborative support method for the water electrolysis hydrogen production and storage device according to claim 1, characterized in that, The response of the energy storage device in S5 must meet the following requirements: The operating state of charge (SOC) is maintained at 60%, and the discharge mode is forcibly exited when the SOC is less than 20%. A hybrid topology of battery and supercapacitor is adopted, with the supercapacitor handling high-frequency fluctuation compensation within 2 seconds.

7. The collaborative support method for the water electrolysis hydrogen production and storage device according to claim 1, characterized in that, The power superposition compensation in S6 includes: When frequency deviation recovery rate At that time, according to the formula: ； in, Frequency deviation recovery rate, range 0 100%, This represents the absolute value of the initial frequency deviation, in Hz. The absolute value of the frequency deviation at the current moment, in Hz, is then calculated using the formula: ； Calculate the compensation power gap, and use water electrolysis to produce hydrogen. Of the compensation amount, the energy storage device will bear the remaining 30%. in The total power to be compensated is required. For frequency deviation recovery rate, For the unrecovered power gap, This represents the proportion of unrecovered deviations.

8. An energy management platform for implementing the method of any one of claims 1-7, characterized in that the platform... include: Data acquisition layer: The PMU synchronous phasor measurement unit acquires the grid frequency, voltage, and operating parameters for hydrogen production via water electrolysis. Collaborative control layer: Includes built-in frequency deviation analysis module, power allocation optimization algorithm module, and fault diagnosis module; Execution layer: includes hydrogen production power converter interface, energy storage PCS converter interface and GOOSE high-speed communication protocol stack.

9. The energy management platform according to claim 8, characterized in that, The collaborative control layer further includes: The power allocation optimization algorithm module adopts a two-level decision structure: The upper layer aims to minimize the grid frequency recovery time and solves for the optimal power ratio of hydrogen production by water electrolysis and energy storage devices. The lower layer generates the electrolytic cell start-up and shutdown sequence and the energy storage charge-discharge depth limit value based on the constraint of minimizing equipment loss cost.

10. The energy management platform according to claim 8, characterized in that, The execution layer ensures real-time performance in the following ways: The frequency deviation calculation task is processed using an FPGA hardware accelerator, and the latency is compressed to less than 10 milliseconds. Commands for the water electrolysis hydrogen production and energy storage device are transmitted synchronously via an optical fiber ring network, with an end-to-end latency of less than 5 milliseconds.

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