Wind hydrogen storage collaborative digital real-time management and control platform and method

Abstract

The invention discloses a wind hydrogen storage collaborative digital real-time management and control platform and method, and relates to the technical field of power grids, and the platform comprises a time calculation module which calculates the structure propagation time based on the effective length of a blind branch pipe; the segmentation module is used for obtaining a plurality of continuous time periods based on the structure propagation time; an amplification module that calculates a first statistical value based on the continuous time period, and calculates a structure amplification factor based on the first statistical value; the coupling module is used for defining a tank opening pipe section and calculating the three-way parallel coupling amount according to the tank opening pressure time sequence and the structure amplification factor of the tank opening pipe section; and the correction module obtains a corrected hydrogen production power adjustment amount according to the three-way parallel coupling amount. According to the invention, invalid charging and discharging times of the energy storage system can be effectively reduced, and grid-connected power fluctuation amplitude is reduced.

Description

Technical Field

[0001] This invention relates to the field of power grid technology, and in particular to a digital real-time management and control platform for wind, energy storage and hydrogen co-operation. Background Technology

[0002] With the increasing proportion of new energy power generation, the integrated application of wind power and hydrogen production, namely wind-storage-hydrogen, is gradually becoming an important technical path for new energy consumption and multi-energy synergistic utilization. In this type of application scenario, wind power, as the main power source, exhibits significant randomness and fluctuation in its output power. The hydrogen production unit, as an important flexible load, converts electrical energy into hydrogen energy through an electrolyzer and operates in coordination with downstream compression, storage, and transportation units. To ensure the continuity and safety of the hydrogen production process, hydrogen transportation typically connects electrolyzers, compressors, and buffer tanks via main pipelines. In actual engineering, due to process layout, instrumentation, and safety requirements, the main pipeline often contains various pipe structures such as valve bodies, blind branch pipes, and buffer tank interfaces. These structures participate in the propagation and reflection of pressure fluctuations during hydrogen transportation, causing the pressure signals before valves and at key nodes to exhibit complex variation characteristics. During the integrated operation of wind power and hydrogen storage, the regulation of hydrogen production power not only affects the operating status of the hydrogen side but also directly relates to the charging and discharging behavior of the energy storage unit and the balance of grid-connected power. Therefore, higher requirements are placed on the regulation accuracy and stability of hydrogen production power.

[0003] Existing technologies for regulating hydrogen production power and coordinating wind and hydrogen storage typically rely directly on pressure signals collected from upstream valves or pipeline measuring points as the basis for judging and adjusting operating conditions. This fails to adequately distinguish between pressure fluctuations caused by actual operating condition changes and localized pressure amplification due to reflections from pipeline structures. In the presence of blind branches, buffer tank interfaces, or other structural features, pressure signals within the pipeline are easily amplified or distorted by structural influences. This causes the regulation logic to misinterpret localized pressure fluctuations as changes in hydrogen production load, leading to excessively large or frequent adjustments to hydrogen production power. This further exacerbates problems such as increased charge / discharge cycles in the energy storage system and unstable grid-connected power. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where pressure signals within pipelines are easily amplified or distorted by structural influences, and to propose a wind-hydrogen storage collaborative digital real-time management and control platform and method.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: A collaborative digital real-time management and control platform for wind and hydrogen storage includes: The time calculation module calculates the structure propagation time based on the effective length of the blind branch pipe; The segmentation module obtains multiple consecutive time segments based on the structure propagation time. The amplification module calculates a first statistical value based on a continuous time period, and then calculates a structural amplification factor based on the first statistical value. The coupling module defines the tank opening pipe section and calculates the parallel coupling amount of the tee based on the tank opening pressure time series and structural amplification factor of the tank opening pipe section. The correction module obtains the corrected hydrogen production power adjustment amount based on the three-way parallel coupling amount; The allocation module proportionally allocates the active power of the energy storage system and the grid connection based on the adjusted hydrogen production power.

[0006] To address the aforementioned problems, this invention also provides a method for coordinated digital real-time management and control of wind and hydrogen storage, the method comprising: S1. Calculate the structural propagation time based on the effective length of the blind branch pipe; S2. Multiple consecutive time periods are obtained based on the structure propagation time; S3. Calculate the first statistical value based on the continuous time period, and calculate the structure amplification factor based on the first statistical value; S4. Define the tank opening pipe section and calculate the parallel coupling amount of the tee according to the tank opening pressure time series and structural amplification factor; S5. Obtain the corrected hydrogen production power adjustment amount based on the three-way parallel coupling amount; S6. Based on the adjusted hydrogen production power, the active power of the energy storage system and the grid connection is proportionally allocated.

[0007] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention introduces a structural propagation time calculation mechanism based on the effective length of the blind branch pipe and the sound velocity of the medium. This mechanism corresponds the analysis timescale of pressure disturbances in hydrogen pipelines to the actual physical propagation process. This allows the pressure changes of structures such as the main pipe before the valve, the blind branch pipe, and the buffer tank within the same propagation cycle to be synchronously aligned and segmented. This effectively avoids the shortcomings of traditional methods that only analyze instantaneous pressure or fixed time windows and ignore the propagation characteristics of pipeline structures. It establishes the analysis of pressure signals on the basis of real propagation laws, improves the ability to identify the source and evolution process of pressure fluctuations in pipelines, and helps to accurately distinguish the pressure fluctuations caused by the superposition of operating condition changes and structural reflections.

[0008] 2. This invention further statistically processes the pressure segments of the main pipe, blind branch pipe, and tank opening pipe section, and constructs a structural amplification factor and a tee parallel action quantity to quantify the amplification and superposition effect of pipeline structure on pressure fluctuations. This introduces a structural influence correction mechanism in the hydrogen production power adjustment process, which can effectively weaken the interference of apparent pressure amplification caused by structural factors such as blind branch pipe reflection and buffer tank interface on the judgment of hydrogen production power adjustment, avoid misjudging local structural pressure fluctuations as real load changes, reduce the excessiveness and frequency of hydrogen production power adjustment, and improve the stability and continuity of hydrogen production operation.

[0009] 3. Based on the corrected hydrogen production power adjustment amount, this invention uniformly coordinates and allocates the remaining power, enabling the energy storage device and grid-connected power to work synergistically under the same adjustment logic. This achieves the overall power balance and smooth operation of the wind-hydrogen storage system. By prioritizing the actual power adjustment demand after removing structural influences to the hydrogen production stage and rationally allocating the remaining power to the energy storage and grid-connected sides, it can effectively reduce the number of ineffective charging and discharging cycles of the energy storage system and reduce the fluctuation range of grid-connected power. Attached Figure Description

[0010] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a functional module diagram of a wind-storage-hydrogen collaborative digital real-time management and control platform provided in an embodiment of the present invention. Detailed Implementation

[0011] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0012] Example: This example provides a real-time digital management and control platform for coordinated wind and hydrogen storage. See [link to relevant documentation]. Figure 1 Specifically, including: The time calculation module calculates the structure propagation time based on the effective length of the blind branch pipe; In an embodiment of the present invention, calculating the structural propagation time based on the effective length of the blind branch includes: Position the main hydrogen pipeline between the outlet of the electrolyzer and the inlet of the diaphragm compressor; It should be noted that the hydrogen main pipeline refers to the pipeline body installed between the outlet of the electrolyzer and the inlet of the diaphragm compressor, which is used to transport hydrogen medium. This pipeline is responsible for continuously transporting the hydrogen produced by the electrolyzer to the subsequent compression equipment.

[0013] It should be noted that the electrolyzer outlet refers to the output port of the electrolyzer equipment used to discharge the hydrogen gas produced by the electrolysis reaction. This output port is connected to the subsequent hydrogen delivery pipeline, allowing the hydrogen generated inside the electrolyzer to enter the pipeline system under pressure and be transported to downstream equipment. A diaphragm compressor is a compression device that uses the reciprocating motion of a flexible diaphragm to compress the hydrogen gas. It isolates the hydrogen gas from the drive mechanism through the diaphragm, preventing contact between the hydrogen and the lubricating medium during compression, thereby achieving clean compression of the hydrogen and providing the necessary pressure conditions for hydrogen storage, transportation, or subsequent processes.

[0014] Specifically, first, examine the process flow diagram and equipment layout drawings of the wind-storage-hydrogen co-production system to clarify the physical installation locations of the electrolyzer and diaphragm compressor, as well as their connection relationship in the hydrogen delivery chain. Then, based on the process flow direction of hydrogen from the electrolyzer to the diaphragm compressor, determine the core pipeline path connecting the electrolyzer and the diaphragm compressor. Next, identify the output port on the electrolyzer used to discharge hydrogen; this port is the starting point for hydrogen leaving the electrolyzer and entering the delivery pipeline. Simultaneously, identify the input port on the diaphragm compressor used to receive hydrogen; this port is the ending point for hydrogen entering the diaphragm compressor. Then, proceed along the starting point... Path tracing to the termination node identifies pipelines that directly connect the two ports without the involvement of other core hydrogen generation or compression equipment. These pipelines must meet the functional requirement of continuously supplying hydrogen generated by the electrolyzer to the diaphragm compressor. Branch pipes and auxiliary pipelines used only for installing pressure gauges, pressure taps, or process joints are excluded. Finally, through on-site verification, it is confirmed that both ends of the pipeline are sealed and connected to the hydrogen output port of the electrolyzer and the hydrogen input port of the diaphragm compressor, respectively. The pipeline is uninterrupted throughout and constitutes the main channel for hydrogen transportation, thus completing the location of the main hydrogen pipeline between the electrolyzer outlet and the diaphragm compressor inlet.

[0015] Obtain the effective length and inner diameter of the blind branch pipe in the hydrogen main pipeline; It should be noted that a blind branch pipe refers to a pipe branching off from the main hydrogen pipeline. One end of the blind branch pipe is connected to the main hydrogen pipeline, while the other end is a closed end and is not connected to downstream equipment or other pipelines. The blind branch pipe does not undertake the main hydrogen transport function, but rather forms a local closed space during the operation of the hydrogen system. When pressure disturbances occur in the main hydrogen pipeline, the pressure disturbances will enter the blind branch pipe and be reflected at its closed end, thus forming a back-and-forth pressure change process within the blind branch pipe. This makes the blind branch pipe an important structural component affecting the pipeline pressure distribution and transient pressure behavior.

[0016] The effective length of a blind branch pipe refers to the distance from the point where the blind branch pipe connects to the main pipe, along the pipe axis, to the closed end of the blind branch pipe. This length determines the range of the path for hydrogen propagation and reflection within the blind branch pipe. The inner diameter of the blind branch pipe refers to the cross-sectional diameter inside the blind branch pipe. This parameter reflects the flow cross-sectional area and volumetric characteristics of the hydrogen medium inside the blind branch pipe.

[0017] Specifically, based on the located main hydrogen pipeline, branch pipelines are checked segment by segment along its route to identify those that connect to the main pipeline at one end and are closed at the other, not participating in the main hydrogen transport. This determines the exact location of the blind branch. Next, relevant documents such as the hydrogen pipeline engineering design drawings and pipeline construction technical files of the wind-storage-hydrogen co-location system are retrieved to preliminarily review the markings of the blind branch's connection to the main pipeline, the location of its closed end, and the pipeline's cross-sectional dimensions. Then, using a laser ranging device with sufficient accuracy, measurements are taken on-site from the connection point of the blind branch to the main pipeline, continuously measuring along the pipeline axis to the closed end of the blind branch. Three independent measurements are completed, and the data from each measurement is recorded. The arithmetic mean of the three measurements is taken as the... The preliminary results of the effective length of the blind branch pipe were obtained. Simultaneously, an inner diameter measuring instrument suitable for the blind branch pipe specifications was selected. Measurement sections were chosen at the middle of the blind branch pipe, near the connection point with the main pipe, and near the closed end. Four measurement points were evenly selected along the circumference of each section. The inner diameter data at each point was measured and recorded sequentially. The arithmetic mean of the four measurement points at each section was calculated to obtain the average inner diameter of that section. The arithmetic mean of the average inner diameters of the three sections was then taken as the preliminary result of the inner diameter of the blind branch pipe. Finally, the preliminary data obtained from technical literature review was compared and analyzed with the preliminary results of on-site measurements. Abnormal data caused by measurement errors or data labeling deviations were eliminated. After confirming data consistency, the final effective length and inner diameter of the blind branch pipe were obtained.

[0018] Acquire instantaneous temperature and pressure data of the hydrogen medium inside the blind branch pipe; It should be noted that the instantaneous temperature data of the hydrogen medium in the blind branch pipe refers to the hydrogen temperature value collected by a temperature detection device installed inside or adjacent to the blind branch pipe at a certain moment. This value reflects the thermal state of the hydrogen medium at that moment. The instantaneous pressure data refers to the hydrogen pressure value collected by a pressure detection device in the blind branch pipe at the corresponding moment. This value reflects the pressurized state of the hydrogen medium in the pipeline.

[0019] Specifically, a temperature detection device is first installed on a blind branch pipe near the closed end and away from pipe bends, interfaces, and other locations prone to measurement interference. The device's sensing element is ensured to be in complete contact with the hydrogen medium inside the blind branch pipe without obstructing the hydrogen's state. Then, a pressure detection device is installed on the same blind branch pipe, maintaining a reasonable distance from the temperature detection device and close to the connection point between the main pipe and the blind branch pipe. The pressure tap of this device is ensured to be fully connected to the inside of the blind branch pipe and to be leak-free. Subsequently, standard calibration equipment is used to calibrate both the temperature and pressure detection devices at multiple levels to ensure their measurement accuracy meets the control requirements of the wind-hydrogen storage co-processing system. Next, a unified data acquisition time interval is set, causing both detection devices to synchronously start data acquisition according to this interval. During normal system operation, the hydrogen temperature value output by the temperature detection device at each acquisition moment is captured in real time, and the hydrogen pressure value output by the pressure detection device at the corresponding acquisition moment is captured simultaneously, forming a one-to-one correspondence of instantaneous temperature and pressure data.

[0020] The speed of sound in hydrogen is determined based on the instantaneous temperature and pressure data of the hydrogen medium. The speed of sound in hydrogen is the speed at which pressure disturbances propagate in hydrogen, determined based on collected instantaneous temperature and pressure data. It is used to describe the propagation capability of pressure waves in a hydrogen medium.

[0021] Specifically, the instantaneous temperature and pressure data of the hydrogen medium at the same sampling moment are obtained, and the instantaneous temperature data is converted into the absolute temperature form required for thermodynamic calculations to ensure the accuracy of subsequent gas state calculations. Then, based on the thermodynamic state of the hydrogen medium under the current pressure and temperature conditions, the specific heat properties and gas state parameters of the hydrogen medium are determined, so that the specific heat properties can reflect the compression and expansion behavior of hydrogen in this instantaneous state. Then, based on the basic relationship of sound wave propagation in gaseous media in gas dynamics, the specific heat properties, gas state parameters, and absolute temperature are introduced into the sound speed calculation relationship to obtain the hydrogen sound speed corresponding to the current instantaneous temperature and instantaneous pressure.

[0022] The propagation time of the structure is calculated based on the effective length of the blind branch and the sound speed of hydrogen.

[0023] The structural propagation time refers to the time required for a pressure disturbance to propagate along the effective length of the blind branch and return. This time is determined by the effective length of the blind branch and the speed of sound of hydrogen gas, and is used to characterize the time scale for a pressure wave to complete one propagation process within the blind branch structure.

[0024] Specifically, the effective length L of the blind branch pipe is obtained. The effective length is the actual pipe length from the connection point between the blind branch pipe and the main hydrogen pipe, extending along the axis of the blind branch pipe to the closed end of the blind branch pipe. This length is used to characterize the spatial distance corresponding to the one-way propagation of pressure disturbance in the blind branch pipe. Next, the hydrogen sound velocity c corresponding to the current operating state is obtained. The hydrogen sound velocity is the pressure disturbance propagation speed calculated based on the instantaneous temperature and instantaneous pressure data of the hydrogen medium. Based on this, combined with the propagation mechanism of pressure disturbance in the blind branch pipe, it is determined that the pressure disturbance propagates from the connection point between the blind branch pipe and the main pipe to the closed end, and after reflection, returns to the connection point. A complete standing wave period is formed during the round-trip propagation process. The propagation path length corresponding to this complete propagation process is four times the effective length of the blind branch pipe, that is, four times L. Then, the ratio of the four times effective length of the blind branch pipe 4L to the hydrogen sound velocity c is calculated. The structural propagation time Ts is obtained by dividing 4L by c.

[0025] The segmentation module obtains multiple consecutive time segments based on the structure propagation time. In embodiments of the present invention, multiple consecutive time periods are obtained based on the structure propagation time, including: Collect the first pressure time series of the main pipeline before the valve in the hydrogen main pipeline; It should be noted that the first pressure time series refers to the set of data on pressure changes over time collected by a pressure detection device located upstream of the valve body in the hydrogen main pipe during continuous operation. This time series reflects the overall pressure changes as hydrogen flows in the main pipe and pressure disturbances propagate.

[0026] It should be noted that the upstream main pipe refers to the pipeline section located upstream of the valve body and directly connected to the valve body in the hydrogen main pipe. This pipeline section is used to transport the hydrogen medium before the hydrogen enters the valve body. Its internal pressure state directly reflects the flow and pressure of the hydrogen medium upstream of the valve body. Since the upstream main pipe is spatially closely connected to the valve body and the downstream pipeline structure, the pressure changes within it are easily affected by the reflection and disturbance of the downstream structure.

[0027] Specifically, a section of the main pipeline upstream of the valve body and directly connected to the valve body is identified in the hydrogen main pipeline. A pressure detection device is installed on this section of the main pipeline, with its pressure tap connected to the internal space of the main pipeline. This allows the device to sense pressure changes in the hydrogen medium within the main pipeline. During the operation of the hydrogen system, the pressure detection device continuously samples the hydrogen pressure within the main pipeline and records each sampled pressure data point in relation to the corresponding sampling time. This creates a data sequence reflecting the continuous pressure change over time within the main pipeline. This data sequence is the first pressure-time series, used to characterize the pressure change process of hydrogen within the main pipeline upstream of the valve body.

[0028] Collect the time series of the second pressure inside the blind branch; The second pressure time series refers to the set of data on pressure changes over time collected by a pressure detection device installed inside the blind branch. This time series reflects the pressure change process of hydrogen medium in the closed branch under the action of pressure wave propagation and reflection.

[0029] Specifically, a blind branch pipe is determined at the branch position of the main hydrogen pipeline, connected to the main pipeline and with a closed end. A pressure detection device is installed inside the blind branch pipe or near the closed end, so that the pressure detection device can directly sense the pressure change of the hydrogen medium inside the blind branch pipe. During the operation of the hydrogen system, the pressure detection device collects the pressure inside the blind branch pipe in a continuous sampling manner, and records the pressure data corresponding to each sampling time in chronological order to form a continuous data set reflecting the pressure change inside the blind branch pipe over time, thereby obtaining a second pressure time series. This second pressure time series is used to reflect the pressure change caused by the propagation and reflection of pressure disturbances in the closed space after entering the blind branch pipe.

[0030] Based on the structural propagation time, the acquisition time axis of the first pressure time series and the second pressure time series is divided to obtain multiple continuous time periods.

[0031] A continuous time period refers to several adjacent time intervals obtained by synchronously dividing the acquisition time axes of the first pressure time series and the second pressure time series using the structural propagation time as the basic time scale. Each continuous time period corresponds to the pressure disturbance completing a complete propagation process within the blind branch pipe structure, and is used to analyze the pressure changes of the main pipe and the blind branch pipe within the same propagation period.

[0032] Specifically, firstly, the complete acquisition time axes corresponding to the first and second pressure time series are obtained. The acquisition time axes are formed by arranging the continuously recorded acquisition moments during the pressure detection process in chronological order. Secondly, the structural propagation time calculated based on the effective length of the blind branch pipe and the sound velocity of hydrogen is obtained, and the structural propagation time is used as the basic time scale for dividing the time axis. Then, the earliest common acquisition moment in the first and second pressure time series is taken as the starting moment, and continuous segments are extracted along the time axis with the structural propagation time as the length. Thus, the acquisition time axes of the first and second pressure time series are synchronously divided into several adjacent and non-overlapping time intervals. The time length between the start and end moments of each time interval is equal to the structural propagation time. Multiple continuous time periods are obtained in the above manner, so that the pressure data corresponding to the first and second pressure time series are within the same structural propagation cycle in each continuous time period. This provides a unified time benchmark for subsequent corresponding analysis of the pressure changes of the main pipe and blind branch pipe before the valve under the same propagation time scale.

[0033] The amplification module calculates a first statistical value based on a continuous time period, and then calculates a structural amplification factor based on the first statistical value. In an embodiment of the present invention, calculating a first statistical value based on a continuous time period includes: Within each consecutive time period, extract the first pressure data segment corresponding to the consecutive time period from the first pressure time series; Specifically, the start and end times of the continuous time periods divided according to the structure propagation time are obtained, and each continuous time period is traversed sequentially according to the time order. Then, all pressure sampling points whose sampling time falls between the start and end times of the corresponding continuous time period are found in the first pressure time series. Then, the pressure sampling points are arranged and collected according to their original time order to form a pressure data set that corresponds one-to-one with the time range of the continuous time period, thereby obtaining the first pressure data segment of the continuous time period. The first pressure data segment fully reflects the continuous process of the hydrogen medium pressure in the main pipe before the valve changing with time within the continuous time period.

[0034] The first pressure data segment is used as the main pipeline pressure segment for a continuous time period. It should be noted that the main pipe pressure segment is a set of pressure data corresponding to a continuous time period obtained according to the structure propagation time. This pressure data set contains multiple pressure sampling values ​​from the start time to the end time of the continuous time period, which is used to characterize the overall situation of the hydrogen medium pressure in the main pipe changing with time within the structure propagation cycle. Since this pressure segment corresponds to the propagation cycle of pressure disturbance in the blind branch pipe, the main pipe pressure segment can reflect the pressure fluctuation impact on the main pipe under the same propagation time scale.

[0035] Within each consecutive time period, the pressure segments of the main pipeline are squared point by point and summed to obtain the first sum of squares; Specifically, the pressure segment of the main pipe corresponding to the current continuous time period is obtained. Then, according to the arrangement order of the pressure sampling values ​​in the pressure segment of the main pipe, each pressure sampling value is squared in turn to convert each pressure sampling value into a corresponding square value, which is used to characterize the energy contribution of the pressure amplitude at that sampling time. Then, all the pressure square values ​​obtained in the continuous time period are accumulated one by one to form a summary result. The summary result is the first sum of squares in the continuous time period, so that the first sum of squares can reflect the overall accumulation of the pressure fluctuation intensity of the main pipe within the propagation period of the structure.

[0036] Divide the sum of the first squares by the structure propagation time to obtain the average of the first squares; The first statistical value is obtained by taking the square root of the first squared mean.

[0037] It should be noted that the first sum of squares reflects the cumulative energy of pressure fluctuations in the main pipeline within that time period; the first average square refers to the average result obtained by processing the first sum of squares in relation to the structural propagation time, used to eliminate the influence of the time scale on the sum of squares result, thus making the pressure fluctuations between different consecutive time periods comparable. The first statistical value refers to the value obtained by taking the square root of the first average square, which comprehensively reflects the overall pressure fluctuation intensity of the main pipeline within the corresponding consecutive time period.

[0038] Specifically, the first statistical value is obtained by dividing the first sum of squares by the structure propagation time and taking the square root of the result. This is determined based on the fundamental laws governing the propagation and energy characterization of pressure fluctuations in a gaseous medium. The first sum of squares reflects the cumulative square of the main pipe pressure change over time within a structure propagation period. This cumulative square result characterizes the overall intensity distribution of the pressure fluctuation amplitude within that time range. By dividing the first sum of squares by the structure propagation time, the influence of the length of the continuous time period on the cumulative square result can be eliminated, thus obtaining the average squared pressure level per unit time scale. This average squared value reflects the average energy state of the main pipe pressure fluctuation within a complete structure propagation cycle. Further square-rooting this average squared value restores the result to a form consistent with the original pressure dimensions, thereby obtaining the first statistical value that comprehensively characterizes the intensity of the main pipe pressure fluctuation within that continuous time period. This first statistical value is equivalent to the root mean square characterization of the pressure fluctuation amplitude within that time period. It retains the overall amplitude information of the pressure fluctuation and avoids the problem of positive and negative pressure changes canceling each other out. Therefore, it can stably reflect the strength of the pressure disturbance experienced by the main pipe within the corresponding structure propagation cycle.

[0039] In an embodiment of the present invention, calculating the structure amplification factor based on a first statistical value includes: Within each consecutive time period, extract the second pressure data segment corresponding to the consecutive time period from the second pressure time series; The second pressure data segment is used as a continuous time segment of blind branch pressure. It should be noted that the pressure segment of the blind branch refers to the pressure data set corresponding to a certain continuous time period obtained from the pressure time series set inside the blind branch according to the structure propagation time. The pressure data set contains multiple pressure sampling values ​​from the start time to the end time of the continuous time period, which is used to characterize the overall pressure change of hydrogen medium in the closed branch of the blind branch during the process of pressure disturbance entry, reflection and round-trip propagation within the same structure propagation cycle.

[0040] Within each consecutive time period, the root mean square of the pressure segment of the blind branch is calculated to obtain the second statistical value. It should be noted that the second statistical value refers to the value obtained by performing the root mean square calculation on the pressure segment of the blind branch within each consecutive time period. This value comprehensively reflects the overall intensity of the pressure fluctuation inside the blind branch within the corresponding structural propagation cycle.

[0041] Divide the second statistical value by the first statistical value to obtain the structural amplification factor.

[0042] It should be noted that the structural amplification factor refers to a quantity used to characterize the amplification effect of pipeline structures such as blind branches on the amplitude of pressure fluctuations during the propagation of pressure disturbances. This quantity reflects that due to structural factors such as the reflection at the closed end of the blind branch, the length of the pipeline, and the connection method with the main pipeline, the pressure disturbances entering the blind branch propagate back and forth and superimpose inside the pipeline, thus forming a more significant pressure fluctuation phenomenon inside the blind branch than in the main pipeline. The magnitude of the structural amplification factor reflects the degree to which the pipeline structure concentrates and enhances the energy of pressure disturbances, and is used to describe the overall effect of pressure waves being amplified in the branch under specific pipeline structure conditions.

[0043] It should be noted that when a branch pipe with a closed end and filled with hydrogen is connected to the main pipe before the valve via a tee, the pressure wave in the main pipe will enter the closed branch pipe after propagating to the tee position and be reflected at the end of the branch pipe. The reflected pressure wave returns to the main pipe and superimposes with the original pressure wave in the main pipe. This makes the pressure fluctuation near the measuring point before the valve significantly greater than the pressure fluctuation amplitude caused by changes in hydrogen flow or compressor operating status alone. This pressure enhancement caused by the superposition of reflections from the branch pipe does not represent a corresponding change in the actual operating conditions. If control is directly based on the pressure signal before the valve, it is easy to misjudge the local pressure amplification caused by the structure as load or operating status fluctuations. Therefore, it is necessary to calculate the structural amplification factor to quantify the degree of enhancement of the pressure fluctuation in the blind branch pipe relative to the pressure fluctuation in the main pipe, so as to identify the component in the pressure signal generated by the reflection amplification of the pipeline structure, and provide a more realistic and reliable pressure basis for the subsequent hydrogen production power adjustment and grid connection power allocation in the coordinated management of wind and hydrogen storage.

[0044] It should be noted that the branch pipe connected to the main pipe upstream of the valve via a tee is a closed-end pipe filled with hydrogen. This means that a tee fitting is installed upstream of the valve body in the main hydrogen pipe, allowing the main hydrogen pipe to branch off into a branch while maintaining its original delivery channel. One end of this branch pipe is connected to the main pipe, while the other end is closed and not connected to other equipment or pipes. During system operation, the branch pipe is filled with hydrogen but does not form a continuous flow. When a pressure change occurs in the main pipe, the pressure change will enter the branch pipe and be reflected at the closed end, thus affecting the pressure fluctuation in the main pipe.

[0045] The coupling module defines the tank opening pipe section and calculates the parallel coupling amount of the tee based on the tank opening pressure time series and structural amplification factor of the tank opening pipe section. In an embodiment of the present invention, a tank opening pipe section is defined, including: Obtain equipment layout data for the buffer tank located next to the hydrogen main pipeline; It should be noted that the equipment layout data refers to the set of information used to describe the installation location of the buffer tank in the hydrogen pipeline system and its relationship with the surrounding pipelines. This information includes the spatial position of the buffer tank relative to the main hydrogen pipeline, its installation direction, and the connection method between the buffer tank and the main hydrogen pipeline, which is used to reflect the actual layout of the buffer tank in the entire hydrogen transportation structure.

[0046] It should be noted that a buffer tank refers to a volumetric device installed in a hydrogen pipeline system and connected to the main hydrogen pipeline. It forms a relatively stable gas space inside and is used to absorb or release a certain amount of hydrogen during hydrogen transportation and processing. When the hydrogen flow rate or pressure in the main pipeline changes, the buffer tank can mitigate the pressure change through its own volume, thus suppressing pressure fluctuations in the main pipeline and providing relatively stable gas supply conditions for downstream equipment.

[0047] Specifically, firstly, the installation location and corresponding number of the buffer tank in the hydrogen pipeline system are determined, so that the buffer tank can be uniquely identified in the overall equipment configuration. Secondly, the layout information corresponding to the buffer tank is retrieved from engineering design data, equipment installation records, or operation and maintenance data. The layout information describes the installation position relationship of the buffer tank relative to the main hydrogen pipeline. Then, the layout information is organized to clarify whether the buffer tank and the main hydrogen pipeline are directly connected by a pipeline, and the direction and direction of the connection. This forms a data set that reflects the spatial relationship and connection relationship between the buffer tank and the main hydrogen pipeline. This data set serves as the equipment layout data of the buffer tank, which is used to subsequently determine the connection position and pipe segment division between the buffer tank and the main hydrogen pipeline.

[0048] Based on the equipment layout data, determine the connection point between the buffer tank and the main hydrogen pipeline; The connection point refers to the specific location where gas communication is achieved between the buffer tank and the main hydrogen pipeline. This location is a spatial node on the main hydrogen pipeline where direct gas exchange occurs between the buffer tank and the main pipeline. When hydrogen flows in the main pipeline or generates pressure disturbances, this connection point is the channel through which pressure waves enter or leave the buffer tank.

[0049] Specifically, the acquired buffer tank equipment layout data is analyzed to clarify the installation orientation of the buffer tank in the hydrogen pipeline system and its relative position to the main hydrogen pipeline. Next, the pipeline routing and interface information describing the connection between the buffer tank and the pipeline are searched within the equipment layout data to identify the specific pipeline connection point between the buffer tank and the main hydrogen pipeline for gas communication. This connection point is then mapped onto the spatial location of the main hydrogen pipeline to determine its specific location range on the main pipeline. This location uniquely represents the point where gas exchange occurs between the buffer tank and the main hydrogen pipeline, thus defining this location as the connection point between the buffer tank and the main hydrogen pipeline. This connection is used for subsequent identification of connecting fittings and division of tank opening sections.

[0050] Identify the connecting pipe fittings corresponding to the connection points on the main hydrogen pipeline; It should be noted that the connecting pipe fitting refers to the pipe component installed between the hydrogen main pipe and the buffer tank to enable gas communication between the two. The pipe component includes one end connected to the hydrogen main pipe and one end connected to the buffer tank, allowing hydrogen to flow between the main pipe and the buffer tank.

[0051] Specifically, the connection point between the buffer tank and the main hydrogen pipeline is determined and used as a positioning reference point. Then, along the axial direction of the main hydrogen pipeline, the pipe components near the connection point are identified one by one to confirm the pipe components that are directly connected to the connection point and used to realize gas conduction. Then, based on the actual installation form of the pipe component on the main hydrogen pipeline, the connection method and connection direction between the pipe component and the main hydrogen pipeline are determined so that the pipe component can uniquely correspond to the connection point. Finally, the pipe component used to connect the main hydrogen pipeline and the buffer tank is determined as the connecting pipe corresponding to the connection point.

[0052] The pipe section located between the hydrogen main pipe and the buffer tank in the connecting fittings is defined as the tank opening pipe section of the buffer tank.

[0053] The tank opening section refers to the section of pipe located between the main hydrogen pipeline and the buffer tank in the connecting pipe fittings. This section is directly connected to the buffer tank and serves as the channel for hydrogen to enter or leave the buffer tank. Its length, location, and connection relationship with the main pipeline determine the behavior of pressure disturbances propagating and reflecting between the main pipeline and the buffer tank.

[0054] It should be noted that defining the pipe section between the main hydrogen pipeline and the buffer tank as the tank opening section of the buffer tank is to clarify the specific pipeline range used for gas exchange between the main hydrogen pipeline and the buffer tank. This pipe section directly serves as the channel for hydrogen to enter the buffer tank from the main pipeline or return from the buffer tank to the main pipeline. Its spatial location is adjacent to the buffer tank body and connected to the main pipeline. Therefore, by dividing the connecting pipes and separately identifying this section of the pipeline connecting the main pipeline and the buffer tank as the tank opening section, it is beneficial to conduct targeted analysis and processing of pressure changes, pressure wave propagation, and structural impacts at this location, thereby giving the relevant pressure data and structural analysis objects a clear physical correspondence.

[0055] In an embodiment of the present invention, the parallel coupling amount of the tee is calculated based on the tank inlet pressure time series and structural amplification factor of the tank inlet pipe section, including: Collect the time series of tank inlet pressures for the tank inlet pipe section; It should be noted that the tank opening pressure time series refers to the set of data on pressure changes over time continuously collected by the pressure detection device installed at the tank opening pipe section during operation. This time series reflects the pressure changes generated at the tank opening pipe section when hydrogen flows between the main pipe and the buffer tank and pressure disturbances interact.

[0056] Specifically, a pressure tapping point is selected at the determined location of the buffer tank inlet pipe section, communicating with the internal space of the pipe section. This pressure tapping point can directly reflect the pressure changes of the hydrogen medium within the inlet pipe section. A pressure detection device is then installed at the pressure tapping point to continuously sense the pressure status within the inlet pipe section during operation. Under normal operating conditions of the hydrogen system, the pressure detection device continuously samples the pressure within the inlet pipe section in real time, recording each collected pressure value and its corresponding sampling time synchronously. The pressure data is then arranged in chronological order to form a data set reflecting the continuous change of pressure within the inlet pipe section over time. This data set is the inlet pressure time series of the inlet pipe section.

[0057] Within each consecutive time period, extract the third pressure data segment corresponding to the consecutive time period from the tank opening pressure time series; The third pressure data segment refers to the set of pressure data extracted from the tank opening pressure time series within a certain continuous time period. This data set corresponds to the pressure change process of the tank opening pipe section within the same structural propagation time scale.

[0058] Specifically, the start and end times of each continuous time period obtained according to the structure propagation time are acquired, and each continuous time period is selected in chronological order. Then, all pressure sampling points whose acquisition time falls between the start and end times of the corresponding continuous time period are searched in the tank opening pressure time series. Then, the pressure sampling points are arranged and collected according to their original acquisition time order to form a pressure data set that corresponds one-to-one with the time range of the continuous time period, thereby obtaining the third pressure data segment of the continuous time period. The third pressure data segment fully reflects the continuous process of the hydrogen medium pressure at the tank opening pipe section changing with time within the continuous time period.

[0059] The third pressure data segment is used as a continuous time segment of the tank opening pipe pressure. The tank inlet pressure segment refers to the data representation formed by corresponding the third pressure data segment with its corresponding continuous time period, which is used to characterize the pressure fluctuation at the inlet of the buffer tank during that time period.

[0060] It should be noted that the third pressure data segment is used as a continuous time segment of the tank opening pipe pressure to clarify the pressure change range of the tank opening pipe segment within each continuous time period. This establishes a one-to-one correspondence between the pressure data and its corresponding structural propagation time period. Since the third pressure data segment completely contains all the pressure change information collected at the tank opening pipe segment within that continuous time period, defining it as a tank opening pipe pressure segment allows the pressure fluctuation of the tank opening pipe segment within that time period to be described as a whole. This facilitates subsequent analysis of the pressure fluctuation of the tank opening pipe segment in relation to the pressure fluctuation of the main pipe and blind branch pipe at the same time scale, giving the pressure changes between different pipe segments a unified time reference and a clear physical orientation.

[0061] Statistical processing of the tank opening pipe pressure segment yields the tank opening pressure fluctuation. The pressure fluctuation at the tank opening refers to the quantity obtained after statistical processing of the pressure segment at the tank opening pipe. This quantity is used to reflect the overall intensity of the pressure fluctuation at the tank opening pipe segment within the corresponding continuous time period.

[0062] Specifically, a pressure segment of the can opening pipe corresponding to a certain continuous time period is obtained. The pressure segment consists of multiple pressure sampling values ​​arranged in chronological order of acquisition. Next, the pressure sampling values ​​in the can opening pipe pressure segment are analyzed as a whole to determine the concentration level of pressure changes within the time period. Then, the average pressure of the can opening pipe pressure segment within the continuous time period is used as a benchmark value. The deviation of each pressure sampling value from the benchmark value is calculated one by one, and the absolute value of the deviation is processed to eliminate the influence of positive and negative directions on the result. Subsequently, all the absolute values ​​of pressure deviation obtained within the continuous time period are accumulated and averaged to obtain a value that characterizes the pressure fluctuation intensity of the can opening pipe segment within the continuous time period. This value is the can opening pressure fluctuation amount, which reflects the overall pressure fluctuation level experienced by the can opening pipe segment within the corresponding structural propagation time scale.

[0063] Multiply the structural amplification factor by the pressure fluctuation at the tank opening to obtain the parallel coupling quantity of the three-way valve.

[0064] It should be noted that the T-junction parallel coupling quantity refers to the quantity used to characterize the degree of joint effect of different branches on the pressure behavior of the main pipe in the T-junction connection structure before the valve. This quantity reflects the comprehensive effect formed when the main pipe is connected to blind branches and buffer tanks in parallel through the T-junction, the pressure disturbances from each branch are superimposed and mutually influenced at the T-junction position and act together on the main pipe. The magnitude of the T-junction parallel coupling quantity reflects the overall strength of the influence of the parallel branches on the pressure change of the main pipe, and is used to describe the degree of structural interference contained in the pressure response of the main pipe under the condition of multi-branch structure.

[0065] Specifically, the pressure fluctuation at the tank opening obtained from the tank opening pipe segment is multiplied by the structural amplification factor to characterize the parallel coupling of the tee. This is based on the fundamental law of pressure disturbance propagation and superposition in a multi-branch parallel structure. The pressure fluctuation at the tank opening reflects the intensity of pressure fluctuations exerted by the buffer tank through the tank opening pipe segment to the tee position. This pressure fluctuation represents the instantaneous impact of the buffer tank branch on the main pipe. The structural amplification factor reflects the amplification capability of the blind branch in the parallel structure to pressure disturbances. When the main pipe is simultaneously subjected to pressure from the buffer tank branch at the tee position... When the pressure fluctuations of the road and the reflection amplification effect from the blind branch pipe are combined at the same spatial node, they jointly affect the pressure behavior in the main pipe. Therefore, by multiplying the pressure fluctuation of the tank opening by the structural amplification factor, the pressure disturbance intensity of the buffer tank branch and the amplification effect of the blind branch pipe structure can be comprehensively characterized into a quantity. This quantity can reflect the degree of comprehensive influence on the main pipe after the pressure of different branches in the T-junction parallel structure is coupled at the same location, thus obtaining the T-junction parallel coupling quantity used to describe the strength of the T-junction parallel coupling effect.

[0066] It should be noted that, under the structural condition where the main pipeline before the valve is connected to both the blind branch and the buffer tank via a tee, the pressure change in the main pipeline is not caused by a single branch, but is simultaneously affected by the pressure fluctuations at the buffer tank inlet and the reflection amplification effect of the blind branch. The pressure change in the buffer tank directly affects the tee position through the tank inlet pipe section, while the pressure disturbance in the blind branch returns to the tee after reflection and amplifies the pressure in the main pipeline. If the pressure effects of the buffer tank or the blind branch are analyzed separately, the actual pressure response formed by the superposition and interaction of multiple branches at the tee position cannot be accurately reflected. Therefore, it is necessary to calculate the parallel coupling of the tee to quantify the combined effect of the buffer tank pressure fluctuation and the blind branch amplification effect at the tee node, thereby identifying the change component in the main pipeline pressure signal caused by the coupling of the parallel structure, and providing a reliable basis for the subsequent accurate judgment of hydrogen production power regulation and grid-connected power allocation.

[0067] The correction module obtains the corrected hydrogen production power adjustment amount based on the three-way parallel coupling amount; In an embodiment of the present invention, the corrected hydrogen production power adjustment amount is obtained based on the three-way parallel coupling amount, including: Obtain the actual hydrogen production power over a continuous time period; It should be noted that the actual hydrogen production power value refers to the amount of electrical power consumed or corresponding to the hydrogen production unit during actual operation within a certain continuous time period. This value reflects the actual electrical energy input level of the electrolyzer during that time period.

[0068] Specifically, a hydrogen production operation record interval is determined that corresponds one-to-one with the continuous time period range, ensuring that this time range is consistent with the continuous time period used in the aforementioned pressure analysis. Then, during the operation of the hydrogen production unit, the power consumption of the electrolyzer within this time range is continuously recorded to obtain data reflecting the power consumption of the electrolyzer at each acquisition time. This power data is then arranged according to the acquisition time sequence. Finally, all power records between the start and end times of the continuous time period are extracted from the power data, and the power records within this time period are summarized to obtain the actual hydrogen production power value characterizing the true operating state of the hydrogen production unit within this continuous time period.

[0069] Obtain the planned target value of hydrogen production capacity from the scheduling system; The hydrogen production power target value refers to the hydrogen production power level given in advance by the dispatching side based on the system operation requirements, which is used to indicate the expected operating state of the hydrogen production unit within the corresponding time period.

[0070] Specifically, a planned time range corresponding to the continuous time period is determined, ensuring that the planned time range is consistent with the statistical time range of the actual hydrogen production power. Next, hydrogen production power arrangement information corresponding to this time range is retrieved from the operation plan issued by the dispatching side. This arrangement information indicates the power level that the hydrogen production unit should achieve within the continuous time period. Then, the hydrogen production power arrangement information is parsed to extract the power values ​​corresponding one-to-one with the continuous time period, and these power values ​​are used as the planned target value for hydrogen production power. This allows the planned target value for hydrogen production power to be used for subsequent comparative analysis with the actual hydrogen production power.

[0071] Subtracting the actual hydrogen production power from the planned target value yields the original hydrogen production power adjustment amount; The original hydrogen production power adjustment refers to the difference between the planned target value and the actual value of hydrogen production power. This difference reflects the degree of deviation between the current hydrogen production operation status and the planned status, and is used to characterize the magnitude and direction of the adjustment required for hydrogen production power.

[0072] The structural influence coefficient is obtained by averaging the parallel coupling of the three-way valve. It should be noted that the structural influence coefficient refers to the quantity obtained after comprehensively characterizing the parallel coupling of the three-way valves over multiple consecutive time periods. It is used to reflect the overall influence level of the pipeline structure on the regulation of hydrogen production power over a period of time.

[0073] Specifically, the parallel coupling quantities of the three-way valves calculated in multiple consecutive time periods are obtained, and the parallel coupling quantities of the three-way valves corresponding to each consecutive time period are collected in chronological order to form a data set reflecting the overall effect of the parallel three-way valve structure during a period of operation. Then, the parallel coupling quantities of the three-way valves in the data set are uniformly processed and accumulated one by one to obtain a sum. Then, according to the number of consecutive time periods contained in the data set, the sum is evenly distributed to obtain a value that can characterize the overall influence of the parallel three-way valve structure on the regulation of the main pipeline pressure and hydrogen production power within the time range. This value is the structural influence coefficient, which is used to reflect the comprehensive effect of the pipeline parallel structure on the operation regulation within the time range.

[0074] Determine the structural adjustment ratio coefficient based on the structural influence coefficient; The structural adjustment ratio coefficient refers to the proportional relationship determined based on the structural influence coefficient, which is used to characterize the degree of structural influence that needs to be considered and weakened during the adjustment of hydrogen production power.

[0075] Specifically, historical operating data of the wind-storage-hydrogen co-operation system is first collected, covering the parallel coupling amount of the three-way valves, structural influence coefficient, hydrogen production power adjustment effect, and corresponding system stability data under different operating conditions. Then, based on this data, a mapping model between the structural influence coefficient and the structural adjustment ratio coefficient is established through regression analysis and simulation. This model must reflect the corresponding logic that a larger structural influence coefficient corresponds to a smaller structural adjustment ratio coefficient, and vice versa. Simultaneously, it must ensure that the structural adjustment ratio coefficient output by the model is within a reasonable range to avoid excessive or insufficient adjustment of hydrogen production power. Finally, the current structural influence coefficient, obtained by averaging the parallel coupling amount of the three-way valves, is input into this mapping model. The model processes the input structural influence coefficients according to its built-in calculation rules, outputting the corresponding preliminary structural adjustment ratio coefficients. Then, it verifies the preliminary structural adjustment ratio coefficients by combining the real-time operating status of the current wind-storage-hydrogen co-operation system, including wind power output, energy storage system charging and discharging status, hydrogen production unit operating parameters, and grid connection power requirements. If the preliminary structural adjustment ratio coefficients are compatible with the current system operating status and can meet the structural influence reduction requirements, they are directly adopted. If there is a compatibility deviation, the preliminary structural adjustment ratio coefficients are fine-tuned according to the real-time operating status of the system. Finally, the structural adjustment ratio coefficients that can accurately characterize the degree of structural influence that needs to be considered and reduced during the hydrogen production power adjustment process are obtained.

[0076] For example, historical data of the wind-storage-hydrogen co-operation system under different operating conditions over the past year were first collected, covering fifty sets of structural influence coefficients corresponding to different three-way parallel coupling quantities. Each set of data included corresponding hydrogen production power adjustment effect data and system stability data. The structural influence coefficient ranged from 0.1 to 1.8. The hydrogen production power adjustment effect data was obtained by comparing the stability of hydrogen production load and the smoothness of grid-connected power before and after adjustment. The system stability data was obtained by monitoring the compressor inlet pressure fluctuation amplitude and the charging and discharging frequency of the energy storage system. Based on this historical data, a mapping relationship model between the structural influence coefficient and the structural adjustment ratio coefficient was established using linear regression analysis. The model's calculation logic was set as the structural adjustment ratio coefficient equal to 2 divided by 1 plus the square of the structural influence coefficient. Subsequently, assuming that the current structural influence coefficient obtained by averaging the three-way parallel coupling quantities is 0.3, this value was input into the mapping relationship model. After calculation, the preliminary structural adjustment ratio coefficient was obtained to be approximately 1.83. Then, the current operating status of the wind-storage-hydrogen co-operation system was monitored in real time, with the wind power output at 35 With a current energy storage system capacity of 80 kW and a remaining capacity of 60%, and a hydrogen production unit operating at 220 kW, the grid-connected power requirement is maintained at around 250 kW. The initial structural adjustment ratio of 1.83 was checked to ensure it was suitable for the current system state. It was found that the adjustment range of the hydrogen production power corresponding to this ratio would not cause overcharging and discharging of the energy storage system, and would also meet the stable grid-connected power requirement. Therefore, no fine-tuning was necessary, and the final structural adjustment ratio was determined to be 1.83. If the current structural impact coefficient is 1.5, the initial structural adjustment ratio obtained after inputting it into the model is approximately 0.64. Considering the current real-time status of 280 kW wind power output, 50 kW energy storage system charging / discharging power with a remaining capacity of 30%, 180 kW hydrogen production unit operating power, and a grid-connected power requirement of 200 kW, it was found that the adjustment range corresponding to this initial ratio might lead to excessive load on the energy storage system. Therefore, the initial structural adjustment ratio was fine-tuned to 0.58 to ensure that it could mitigate the structural impact while maintaining overall system stability, thus obtaining the final structural adjustment ratio.

[0077] Multiply the structural adjustment ratio by the original hydrogen production power adjustment amount to obtain the corrected hydrogen production power adjustment amount.

[0078] The corrected hydrogen production power adjustment amount refers to the result obtained by introducing a structural adjustment ratio coefficient on the basis of the original hydrogen production power adjustment amount. This result is used to represent the hydrogen production power adjustment demand after eliminating or weakening the influence of pipeline structure.

[0079] It should be noted that multiplying the structural adjustment ratio coefficient by the original hydrogen production power adjustment to obtain the corrected hydrogen production power adjustment is based on the adjustment logic after distinguishing the sources of hydrogen production power deviation. The original hydrogen production power adjustment reflects the overall deviation between the current operating state of the hydrogen production unit and the planned target. However, this deviation also includes the apparent changes amplified by pressure amplification and coupling effects caused by the parallel pipeline structure. The structural adjustment ratio coefficient is used to characterize the proportion of the influence of pipeline structural factors on this deviation under the current operating conditions. By applying the structural adjustment ratio coefficient to the original hydrogen production power adjustment, the part amplified by structural factors can be weakened or corrected proportionally, so that the adjustment reflects more the actual hydrogen production operation demand itself. Thus, the corrected hydrogen production power adjustment is obtained after eliminating or reducing the structural influence. This corrected hydrogen production power adjustment can be used to guide the adjustment of hydrogen production power to avoid excessive or insufficient adjustments due to structural pressure disturbances.

[0080] The allocation module proportionally allocates the active power of the energy storage system and the grid connection based on the adjusted hydrogen production power.

[0081] In embodiments of the present invention, the active power of the energy storage system and the grid connection is proportionally allocated based on the adjusted hydrogen production power, including: Add the corrected hydrogen production power adjustment amount to the actual hydrogen production power value to obtain the corrected hydrogen production power setting value; It should be noted that the corrected hydrogen production power setpoint refers to the target power level obtained by combining the actual operating power of the hydrogen production unit with the corrected hydrogen production power adjustment under the current operating conditions. This setpoint is used to indicate the power state that the hydrogen production unit should achieve in subsequent operation, so that the hydrogen production process can meet the scheduling requirements and avoid interference from pipeline structure factors.

[0082] Subtract the corrected hydrogen production power setting value from the original hydrogen production power adjustment to obtain the remaining power adjustment. The remaining power adjustment amount refers to the amount of power change that has not been absorbed or consumed by the hydrogen production unit after the hydrogen production power correction has been completed. This power change amount represents the electrical power space that can still be adjusted in the system.

[0083] Specifically, the remaining power adjustment is obtained by subtracting the corrected hydrogen production power setpoint from the original hydrogen production power adjustment. This is based on the fundamental principles of power conservation and power allocation. The original hydrogen production power adjustment represents the total power adjustment required by the system to meet the planned targets within a continuous time period. The corrected hydrogen production power setpoint represents the actual power change that the hydrogen production unit needs to absorb or release within that time period after eliminating the influence of pipeline structure. After the hydrogen production unit completes the corresponding adjustment according to the corrected hydrogen production power setpoint, the portion of the original power adjustment demand that has not yet been absorbed by the hydrogen production unit is retained in the form of a power difference. This power difference reflects the remaining power margin available for allocation in the system. Therefore, the result obtained through the above difference calculation can accurately characterize the remaining power adjustment space after the hydrogen production power correction is completed. This result is the remaining power adjustment, which is used for subsequent coordinated allocation between energy storage units and grid-connected power.

[0084] The active power of the energy storage system and the grid is proportionally allocated based on the remaining power adjustment.

[0085] The active power of an energy storage system refers to the actual electrical power exchanged between the energy storage device and the power grid or electrical equipment during charging and discharging, used to balance system power fluctuations. Grid-connected active power refers to the electrical power input to or obtained from the power grid through the grid connection interface. This power reflects the energy exchange level between the system and the external power grid. By proportionally allocating the remaining power adjustment between the energy storage system and the grid-connected active power, the overall power coordination and stable operation of the wind-hydrogen storage system can be achieved.

[0086] Specifically, first, real-time operating data of the energy storage system is collected, including current charging and discharging power, remaining capacity, maximum charging and discharging power limit, minimum charging and discharging power limit, and charging and discharging conversion efficiency. Simultaneously, real-time operating parameters from the grid-connected side are collected, including the current grid frequency, voltage stability, active power acceptance limit, active power acceptance limit, and the allowable range of grid-connected power fluctuations stipulated by the dispatching department. Then, the adjustable capacity of the energy storage system is determined based on its remaining capacity. If the remaining capacity is higher than 70%, the energy storage system is considered to have strong charging regulation capability; if the remaining capacity is lower than 30%, the energy storage system is considered to have limited charging regulation capability; and if the remaining capacity is between 30% and 70%, the energy storage system is considered to have moderate regulation capability. The allocation priority is determined by combining the grid-connected side's active power acceptance capability and the allowable fluctuation range. If the energy storage system has strong regulation capability and the grid-connected side is sensitive to power fluctuations, the allocation priority of the remaining power adjustment is tilted towards the energy storage system. If the energy storage system has limited regulation capability but the grid-connected side has strong acceptance capability, the allocation priority of grid-connected active power is increased. Subsequently, an initial allocation ratio is set based on the allocation priority, and the target charging capacity of the energy storage system is calculated according to this ratio. The system verifies whether the target charging and discharging power of the energy storage system is between its maximum charging and discharging power limit and minimum charging and discharging power limit, and whether it will not exceed the actual regulation capacity of the energy storage system after considering the charging and discharging conversion efficiency. At the same time, it verifies whether the target active power of the grid-connected side is within the upper and lower limits of the grid's active power acceptance limit, and whether the fluctuation range meets the requirements stipulated by the dispatching department. If both verifications are satisfied, the allocation is executed according to the preliminary allocation ratio. If the target charging and discharging power of the energy storage system exceeds the regulation range, its allocation ratio is reduced and the allocation ratio of the grid-connected active power is increased accordingly. If the target active power of the grid-connected side exceeds the acceptance range or the fluctuation range exceeds the standard, its allocation ratio is reduced and the allocation ratio of the energy storage system is increased accordingly. The above verification and adjustment process is repeated until the final allocation ratio that meets all constraints is obtained. Finally, the remaining power adjustment amount is allocated to the energy storage system and the grid-connected side according to the final allocation ratio, generating charging and discharging power instructions for the energy storage system and active power instructions for the grid-connected side. These instructions are sent to the corresponding execution units in real time and the execution status of the instructions is monitored to ensure that the overall active power of the wind-hydrogen storage system is balanced and operates stably.

[0087] It should be noted that after the structural correction of hydrogen production power is completed, the adjusted hydrogen production power only reflects the actual power change that the hydrogen production unit needs to adjust under the current operating conditions. However, there may still be power fluctuations in the system that are not absorbed or released by the hydrogen production unit. If this part of the power is not further allocated, it will lead to system power imbalance or aggravated grid-connected power fluctuations. Therefore, based on the adjusted hydrogen production power, it is necessary to proportionally allocate the active power of the energy storage system and the grid connection so that the remaining power changes can be reasonably shared between the local energy storage and the external power grid. The charging and discharging capacity of the energy storage system can smooth the power changes, while the grid connection interface can be used to achieve overall power balance, thereby ensuring that the wind-hydrogen storage system can meet the hydrogen production demand while maintaining the stability and continuity of the power side operation.

[0088] To address the aforementioned problems, this invention also provides a method for coordinated digital real-time management and control of wind and hydrogen storage, specifically including: S1. Calculate the structural propagation time based on the effective length of the blind branch pipe; S2. Multiple consecutive time periods are obtained based on the structure propagation time; S3. Calculate the first statistical value based on the continuous time period, and calculate the structure amplification factor based on the first statistical value; S4. Define the tank opening pipe section and calculate the parallel coupling amount of the tee according to the tank opening pressure time series and structural amplification factor; S5. Obtain the corrected hydrogen production power adjustment amount based on the three-way parallel coupling amount; S6. Based on the adjusted hydrogen production power, the active power of the energy storage system and the grid connection is proportionally allocated.

[0089] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A real-time digital management and control platform for wind-storage-hydrogen collaboration, characterized in that, include: The time calculation module calculates the structure propagation time based on the effective length of the blind branch pipe; The segmentation module obtains multiple consecutive time segments based on the structure propagation time. The amplification module calculates a first statistical value based on a continuous time period, and then calculates a structural amplification factor based on the first statistical value. The coupling module defines the tank opening pipe section and calculates the parallel coupling amount of the tee based on the tank opening pressure time series and structural amplification factor of the tank opening pipe section. The correction module obtains the corrected hydrogen production power adjustment amount based on the three-way parallel coupling amount; The allocation module proportionally allocates the active power of the energy storage system and the grid connection based on the adjusted hydrogen production power.

2. The wind-storage-hydrogen collaborative digital real-time management and control platform according to claim 1, characterized in that, The calculation of structural propagation time based on the effective length of the blind branch includes: Position the main hydrogen pipeline between the outlet of the electrolyzer and the inlet of the diaphragm compressor; Obtain the effective length and inner diameter of the blind branch pipe in the hydrogen main pipeline; Acquire instantaneous temperature and pressure data of the hydrogen medium inside the blind branch pipe; The speed of sound in hydrogen is determined based on the instantaneous temperature and pressure data of the hydrogen medium. The propagation time of the structure is calculated based on the effective length of the blind branch and the sound speed of hydrogen.

3. The wind-storage-hydrogen collaborative digital real-time management and control platform according to claim 2, characterized in that, Based on the structure propagation time, multiple consecutive time periods are obtained, including: Collect the first pressure time series of the main pipeline before the valve in the hydrogen main pipeline; Collect the time series of the second pressure inside the blind branch; Based on the structural propagation time, the acquisition time axis of the first pressure time series and the second pressure time series is divided to obtain multiple continuous time periods.

4. The wind-storage-hydrogen collaborative digital real-time control platform according to claim 3, characterized in that, The first statistical value is calculated based on a continuous time period, including: Within each consecutive time period, extract the first pressure data segment corresponding to the consecutive time period from the first pressure time series; The first pressure data segment is used as the main pipeline pressure segment for a continuous time period. Within each consecutive time period, the pressure segments of the main pipeline are squared point by point and summed to obtain the first sum of squares; Divide the sum of the first squares by the structure propagation time to obtain the average of the first squares; The first statistical value is obtained by taking the square root of the first squared mean.

5. The wind-storage-hydrogen collaborative digital real-time management and control platform according to claim 3, characterized in that, The structure amplification factor is calculated based on the first statistical value, including: Within each consecutive time period, extract the second pressure data segment corresponding to the consecutive time period from the second pressure time series; The second pressure data segment is used as a continuous time segment of blind branch pressure. Within each consecutive time period, the root mean square of the pressure segment of the blind branch is calculated to obtain the second statistical value. Divide the second statistical value by the first statistical value to obtain the structural amplification factor.

6. The wind-storage-hydrogen collaborative digital real-time management and control platform according to claim 2, characterized in that, Define the tank opening pipe section, including: Obtain equipment layout data for the buffer tank located next to the hydrogen main pipeline; Based on the equipment layout data, determine the connection point between the buffer tank and the main hydrogen pipeline; Identify the connecting pipe fittings corresponding to the connection points on the main hydrogen pipeline; The pipe section located between the hydrogen main pipe and the buffer tank in the connecting fittings is defined as the tank opening pipe section of the buffer tank.

7. The wind-storage-hydrogen collaborative digital real-time management and control platform according to claim 1, characterized in that, The parallel coupling of the tee is calculated based on the tank inlet pressure time series and structural amplification factor of the tank inlet pipe section, including: Collect the time series of tank inlet pressures for the tank inlet pipe section; Within each consecutive time period, extract the third pressure data segment corresponding to the consecutive time period from the tank opening pressure time series; The third pressure data segment is used as a continuous time segment of the tank opening pipe pressure. Statistical processing of the tank opening pipe pressure segment yields the tank opening pressure fluctuation. Multiply the structural amplification factor by the pressure fluctuation at the tank opening to obtain the parallel coupling quantity of the three-way valve.

8. The wind-storage-hydrogen collaborative digital real-time management and control platform according to claim 1, characterized in that, The corrected hydrogen production power adjustment is obtained based on the three-way parallel coupling amount, including: Obtain the actual hydrogen production power over a continuous time period; Obtain the planned target value of hydrogen production capacity from the scheduling system; Subtracting the actual hydrogen production power from the planned target value yields the original hydrogen production power adjustment amount; The structural influence coefficient is obtained by averaging the parallel coupling of the three-way valve. Determine the structural adjustment ratio coefficient based on the structural influence coefficient; Multiply the structural adjustment ratio by the original hydrogen production power adjustment amount to obtain the corrected hydrogen production power adjustment amount.

9. The wind-storage-hydrogen collaborative digital real-time control platform according to claim 8, characterized in that, The active power of the energy storage system and the grid is proportionally allocated based on the adjusted hydrogen production power, including: Add the corrected hydrogen production power adjustment amount to the actual hydrogen production power value to obtain the corrected hydrogen production power setting value; Subtract the corrected hydrogen production power setting value from the original hydrogen production power adjustment to obtain the remaining power adjustment. The active power of the energy storage system and the grid is proportionally allocated based on the remaining power adjustment.

10. A method for coordinated digital real-time control of wind and hydrogen storage, characterized in that, The method includes: S1. Calculate the structural propagation time based on the effective length of the blind branch pipe; S2. Multiple consecutive time periods are obtained based on the structure propagation time; S3. Calculate the first statistical value based on the continuous time period, and calculate the structure amplification factor based on the first statistical value; S4. Define the tank opening pipe section and calculate the parallel coupling amount of the tee according to the tank opening pressure time series and structural amplification factor; S5. Obtain the corrected hydrogen production power adjustment amount based on the three-way parallel coupling amount; S6. Based on the adjusted hydrogen production power, the active power of the energy storage system and the grid connection is proportionally allocated.

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