Hydrogen production power supply ripple monitoring method and device matched with water electrolysis hydrogen production system

Abstract

The invention relates to the technical field of electronics, and discloses a hydrogen production power supply ripple monitoring method and device matched with a water electrolysis hydrogen production system, and the method comprises the steps: calculating a ripple coefficient based on a voltage time sequence signal outputted by a hydrogen production power supply; calculating the electric energy utilization efficiency of an electrolytic cell based on a working voltage time sequence signal and a working current time sequence signal of the electrolytic cell in the water electrolysis hydrogen production system and the flow and purity of hydrogen generated by the electrolytic cell; calculating the Faraday efficiency of the electrolytic cell based on the working current time sequence signal and the flow and purity of hydrogen generated by the electrolytic cell; based on the ripple coefficient, the electric energy utilization power of the electrolytic cell and the Faraday efficiency, the influence degree of the ripple output by the hydrogen production power supply on the water electrolysis hydrogen production system is determined, so that the influence degree of the ripple output by the hydrogen production power supply on the water electrolysis hydrogen production system is effectively monitored; therefore, an operator or an automatic energy management and control system can determine the influence of the ripple level on the operation of the water electrolysis hydrogen production system, so that the operation of the system is intervened.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and particularly to a method and device for monitoring the ripple of a hydrogen production power supply that matches an electrolytic water hydrogen production system. Background Art

[0002] The hydrogen production power supply is an important part of the electrolytic water hydrogen production system. Especially in the power supply scenario of wind and solar renewable energy power generation, the hydrogen production power supply rectifies and steps down the electric energy output by the wind and solar renewable energy to provide a low-voltage and large-current electric energy output for the rear-end electrolyzer, ensuring the continuous and efficient production of hydrogen. Due to the principle limitation of the circuit structure, the direct current output by the power supply inevitably contains an alternating current component, which is the ripple. The ripple will cause many safety hazards to the power supply circuit and the hydrogen production system, and cause additional energy consumption to affect the system efficiency. It should be noted that the switching of the power switch element, the instability of the input signal, and the instantaneous change of the output voltage caused by the load change will all generate or enhance the power supply ripple, and the power supply volatility caused by wind and solar power generation will exacerbate this trend, increasing the start-stop of the circuit and the change frequency of the load, so that the ripple level in the circuit has variability. Therefore, it is very important to monitor the ripple of the hydrogen production power supply that matches the electrolytic water hydrogen production system.

[0003] In the related technologies, major hydrogen production manufacturers continuously upgrade and iterate their products and optimize the circuit design to continuously reduce the ripple level generated by the power supply, so as to output direct current with low ripple characteristics to protect the hydrogen production system and improve the power utilization efficiency. However, most of the hydrogen production power supplies currently on the market are not equipped with a ripple monitoring device or system, and the specific ripple level inside the electrolytic water hydrogen production system cannot be directly obtained, thus leaving a large hidden danger of safe operation and power waste. Long-term operation at an abnormally high ripple level will reduce the service life of circuit components, lower the power utilization efficiency of the system, and cause relatively serious economic losses. In the current mainstream wind and solar power generation electrolytic water hydrogen production system in the industry, due to adapting to the power supply volatility, the switching start-stop and load change are more obvious, and the change of the ripple level is more difficult to predict. This uncertainty increases the system hidden danger affected by the ripple. Therefore, it is urgent to propose a method for monitoring the ripple of a hydrogen production power supply that matches an electrolytic water hydrogen production system. Summary of the Invention

[0004] In view of this, the present invention provides a method and device for monitoring the ripple of a hydrogen production power supply that matches an electrolytic water hydrogen production system to solve the problem that most of the hydrogen production power supplies in the related technologies are not equipped with a ripple monitoring device or system and cannot detect the specific ripple level inside the electrolytic water hydrogen production system.

[0005] In a first aspect, the present invention provides a method for monitoring the ripple of a hydrogen production power supply matching an electrolytic water hydrogen production system. The method includes: obtaining a voltage time series signal output by the hydrogen production power supply, a working voltage time series signal of the electrolytic cell in the electrolytic water hydrogen production system, a working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell; calculating a ripple coefficient based on the voltage time series signal output by the hydrogen production power supply; calculating the electrical energy utilization efficiency of the electrolytic cell based on the working voltage time series signal, the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell in the electrolytic water hydrogen production system; calculating the Faraday efficiency of the electrolytic cell based on the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell; and determining the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency.

[0006] The method for monitoring the ripple of a hydrogen production power supply matching an electrolytic water hydrogen production system provided by the present invention calculates a ripple coefficient based on the voltage time series signal output by the hydrogen production power supply; calculates the electrical energy utilization efficiency of the electrolytic cell based on the working voltage time series signal, the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell in the electrolytic water hydrogen production system; calculates the Faraday efficiency of the electrolytic cell based on the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell; and determines the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency. It effectively realizes the monitoring of the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system, enabling operators or an automatic energy management and control system to more clearly understand the specific influence of the ripple level on the operation of the electrolytic water hydrogen production system, thereby intervening in the operation of the electrolytic water hydrogen production system, effectively protecting the electrolytic water hydrogen production system from the adverse effects of abnormal ripple levels, enhancing the safe and stable operation ability of the system, reducing the power conversion loss, and contributing to the improvement of the hydrogen production efficiency of the hydrogen production system.

[0007] In an optional implementation manner, the voltage time series signal output by the hydrogen production power supply is obtained through the following steps: obtaining a voltage continuous signal collected by a preset sensor; filtering the voltage continuous signal using a preset filter to obtain a noise-reduced signal; and performing analog-to-digital conversion on the noise-reduced signal using an analog-to-digital converter to obtain a voltage time series signal.

[0008] The method provided in this optional implementation manner facilitates subsequent data processing and storage work by performing filtering and analog-to-digital conversion on the voltage continuous signal collected by a preset sensor.

[0009] In an alternative embodiment, the steps of calculating the ripple coefficient based on the voltage time series signal output by the hydrogen production power source include: performing a fast Fourier transform on the voltage time series signal to obtain a target signal; extracting the AC component information and the DC component information from the target signal; calculating the effective value of the ripple voltage based on the AC component information; calculating the effective value of the DC voltage based on the DC component information; and calculating the ripple coefficient based on the effective value of the ripple voltage and the effective value of the DC voltage.

[0010] In an alternative embodiment, the steps of calculating the electrical energy utilization efficiency of the electrolyzer based on the working voltage time series signal, the working current time series signal, the hydrogen production flow rate, and the purity of the hydrogen produced by the electrolyzer in the electrolytic water hydrogen production system include: calculating the operating power of the electrolyzer based on the working voltage time series signal and the working current time series signal of the electrolyzer in the electrolytic water hydrogen production system; calculating the molar flow rate of hydrogen based on the hydrogen production flow rate and the purity of the hydrogen produced by the electrolyzer; and calculating the electrical energy utilization efficiency of the electrolyzer based on the molar flow rate of hydrogen and the operating power of the electrolyzer.

[0011] In an alternative embodiment, the steps of determining the influence degree of the ripple output by the hydrogen production power source on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency include: obtaining the preset thresholds corresponding to the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency respectively; taking the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency as three monitoring indicators, and when any one of the values of the three monitoring indicators is greater than the corresponding preset threshold, recording the alarm information.

[0012] In an alternative embodiment, the steps of determining the influence degree of the ripple output by the hydrogen production power source on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency further include: taking the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency as three monitoring indicators, and when any two of the values of the three monitoring indicators are greater than the corresponding preset thresholds, sending a visual information alarm; and when the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency are all greater than the corresponding preset thresholds respectively, sending an auditory information alarm.

[0013] Second aspect, the present invention provides a ripple monitoring device for a hydrogen production power supply matching an electrolytic water hydrogen production system. The device includes: an acquisition module, configured to acquire a voltage time series signal output by the hydrogen production power supply, a working voltage time series signal of an electrolytic cell in the electrolytic water hydrogen production system, a working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell; a first calculation module, configured to calculate a ripple coefficient based on the voltage time series signal output by the hydrogen production power supply; a second calculation module, configured to calculate the electrical energy utilization efficiency of the electrolytic cell based on the working voltage time series signal, the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell in the electrolytic water hydrogen production system; a third calculation module, configured to calculate the Faraday efficiency of the electrolytic cell based on the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell; a determination module, configured to determine the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency.

[0014] Third aspect, the present invention provides a computer device, including: a memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the method for monitoring the ripple of the hydrogen production power supply matching the electrolytic water hydrogen production system according to the first aspect or any corresponding embodiment thereof.

[0015] Fourth aspect, the present invention provides a computer-readable storage medium, on which computer instructions are stored. The computer instructions are used to cause a computer to execute the method for monitoring the ripple of the hydrogen production power supply matching the electrolytic water hydrogen production system according to the first aspect or any corresponding embodiment thereof.

[0016] Fifth aspect, the present invention provides a computer program product, including computer instructions, which are used to cause a computer to execute the method for monitoring the ripple of the hydrogen production power supply matching the electrolytic water hydrogen production system according to the first aspect or any corresponding embodiment thereof. Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic flowchart of the method for monitoring the ripple of the hydrogen production power supply matching the electrolytic water hydrogen production system according to an embodiment of the present invention;

[0019] Figure 2It is a schematic flowchart of a method for monitoring the ripple of a hydrogen production power supply of another electrolytic water hydrogen production system according to an embodiment of the present invention;

[0020] Figure 3 It is a schematic flowchart of a method for monitoring the ripple of a hydrogen production power supply of yet another electrolytic water hydrogen production system according to an embodiment of the present invention;

[0021] Figure 4 It is a structural block diagram of a device for monitoring the ripple of a hydrogen production power supply of an electrolytic water hydrogen production system according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments 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 some, rather than all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] In related technologies, major hydrogen production manufacturers continuously reduce the ripple level generated by the power supply through product upgrade iterations and circuit optimization designs, so as to output direct current with low ripple characteristics to protect the hydrogen production system and improve the power utilization efficiency. However, most of the hydrogen production power supplies currently on the market do not come with a ripple monitoring device or system, and it is impossible to directly obtain the specific ripple level inside the electrolytic water hydrogen production system. This leaves relatively large potential safety operation and power waste hazards. Operating at an abnormally high ripple level for a long time will reduce the lifespan of circuit components, lower the power utilization efficiency of the system, and cause relatively serious economic losses. In the currently mainstream wind-solar power generation electrolytic water hydrogen production system in the industry, due to the need to adapt to the volatility of power supply, the switching on and off of switches and the load changes are more obvious, and the change of the ripple level is more difficult to predict. This uncertainty increases the potential hazards of the system affected by the ripple.

[0025] In view of this, a method for monitoring the ripple of a hydrogen production power supply for an electrolytic water hydrogen production system provided by an embodiment of the present application can be applied to a server to realize the monitoring of the ripple of the hydrogen production power supply for the electrolytic water hydrogen production system. The method provided by the embodiment of the present application calculates the ripple coefficient based on the voltage time series signal output by the hydrogen production power supply; calculates the electrical energy utilization efficiency of the electrolytic cell based on the working voltage time series signal, the working current time series signal, the hydrogen production flow rate and the purity of the electrolytic cell in the electrolytic water hydrogen production system; calculates the Faraday efficiency of the electrolytic cell based on the working current time series signal, the hydrogen production flow rate and the purity of the electrolytic cell; determines the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolytic cell and the Faraday efficiency, effectively realizing the monitoring of the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system, enabling the operator or the automatic energy management and control system to more clearly understand the specific influence of the ripple level on the operation of the electrolytic water hydrogen production system, thereby intervening in the operation of the electrolytic water hydrogen production system, effectively protecting the electrolytic water hydrogen production system from the adverse effects of abnormal ripple levels, enhancing the safe and stable operation ability of the system, reducing the power conversion loss, and contributing to the improvement of the hydrogen production efficiency of the hydrogen production system.

[0026] According to an embodiment of the present invention, an embodiment of a method for monitoring the ripple of a hydrogen production power supply for an electrolytic water hydrogen production system is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0027] In this embodiment, a method for monitoring the ripple of a hydrogen production power supply for an electrolytic water hydrogen production system is provided, which can be used for the above-mentioned server. Figure 1 It is a flowchart of a method for monitoring the ripple of a hydrogen production power supply for an electrolytic water hydrogen production system according to an embodiment of the present invention, as Figure 1 shown, and the process includes the following steps:

[0028] Step S101, obtain the voltage time series signal output by the hydrogen production power supply, the working voltage time series signal of the electrolytic cell in the electrolytic water hydrogen production system, the working current time series signal, the hydrogen production flow rate of the electrolytic cell, and the purity.

[0029] Exemplarily, the hydrogen production power supply is used to provide stable electrical energy for the water electrolysis hydrogen production system. In the embodiments of the present application, the input end of the hydrogen production power supply can be connected to the wind-solar power generation unit, and the input end is connected to the water electrolysis hydrogen production system, which is used to step down the direct current of the electrical energy input by the wind-solar power generation unit and transmit the processed electrical energy to the subsequent water electrolysis hydrogen production system to provide hydrogen production electrical energy for the water electrolysis hydrogen production system. The voltage time series signal output by the hydrogen production power supply can be collected by a pre-set first circuit sensor. The voltage time series signal output by the hydrogen production power supply includes a direct current component and an alternating current ripple component. The working voltage time series signal and the working current time series signal of the electrolytic cell can be collected by a pre-set second circuit sensor. The flow rate of hydrogen generated by the electrolytic cell can be collected by a pre-set flow meter, and the purity of hydrogen can be collected by a pre-set hydrogen sensor.

[0030] Step S102, calculate the ripple coefficient based on the voltage time series signal output by the hydrogen production power supply.

[0031] Exemplarily, the ripple coefficient is an index to measure the proportion of the alternating current ripple component in the output voltage of the power supply, which is used to evaluate the stability of the power supply output. In the embodiments of the present application, the specific calculation process of the ripple coefficient is not limited, and those skilled in the art can determine it according to requirements.

[0032] Step S103, calculate the electrical energy utilization efficiency of the electrolytic cell based on the working voltage time series signal, the working current time series signal, the flow rate of hydrogen generated by the electrolytic cell, and the purity in the water electrolysis hydrogen production system.

[0033] Exemplarily, the electrical energy utilization efficiency refers to the proportion of the effectively utilized electrical energy in the total consumed electrical energy during the production, transmission, distribution, and use of electrical energy, which reflects the utilization effect and energy-saving level of electrical energy in each link. In the embodiments of the present application, the total consumed electrical energy is calculated through the working voltage time series signal and the working current time series signal of the electrolytic cell in the water electrolysis hydrogen production system, and the effectively utilized electrical energy is calculated through the flow rate of hydrogen generated by the electrolytic cell and the purity, so as to calculate the electrical energy utilization rate of the electrolytic cell.

[0034] Step S104, calculate the Faraday efficiency of the electrolytic cell based on the working current time series signal, the flow rate of hydrogen generated by the electrolytic cell, and the purity.

[0035] Exemplarily, the Faraday efficiency refers to the ratio of the amount of substance actually participating in the target electrode reaction to the theoretical amount of substance calculated according to the Faraday's law, usually expressed as a percentage. The Faraday efficiency reflects the utilization efficiency of the current in a specific reaction. The closer the value is to 100%, the less current is wasted. In the embodiments of the present application, the Faraday efficiency of the electrolytic cell is calculated based on the working current time series signal of the electrolytic cell, the flow rate and purity of the hydrogen generated by the electrolytic cell. In the embodiments of the present application, the Faraday efficiency of the electrolytic cell can be calculated by the following formula:

[0036]

[0037] wherein, F represents the Faraday constant, i represents the working current of the electrolytic cell, A represents the surface area of the electrolytic cell, represents the actual hydrogen production molar number per unit time, and the actual hydrogen production molar number can be calculated from the flow rate and purity of the hydrogen generated by the electrolytic cell.

[0038] Step S105, determining the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the power utilization efficiency of the electrolytic cell, and the Faraday efficiency.

[0039] Exemplarily, based on the ripple coefficient, the power utilization efficiency of the electrolytic cell, and the Faraday efficiency as evaluation indicators, the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system is determined. In the embodiments of the present application, each evaluation indicator is compared with the corresponding threshold value to determine the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system. For example, when the ripple coefficient is greater than the corresponding ripple coefficient threshold value, it is considered that the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system should be warned and intervened.

[0040] The hydrogen production power supply ripple monitoring method for a matching electrolytic water hydrogen production system provided in this embodiment calculates the ripple coefficient based on the voltage time series signal output by the hydrogen production power supply; calculates the electrical energy utilization efficiency of the electrolytic cell based on the working voltage time series signal, working current time series signal, hydrogen production flow rate, and purity of the electrolytic cell in the electrolytic water hydrogen production system; calculates the Faraday efficiency of the electrolytic cell based on the working current time series signal, hydrogen production flow rate, and purity of the electrolytic cell; determines the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency, effectively realizing the monitoring of the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system, enabling the operator to more clearly understand the specific influence of the ripple level on the operation of the electrolytic water hydrogen production system, thereby intervening in the operation of the electrolytic water hydrogen production system or linking to an energy management system for automated processing, effectively protecting the electrolytic water hydrogen production system from the adverse effects of abnormal ripple levels, enhancing the safe and stable operation ability of the system, reducing the power conversion loss, and contributing to the improvement of the hydrogen production efficiency of the hydrogen production system.

[0041] In this embodiment, a hydrogen production power supply ripple monitoring method for a matching electrolytic water hydrogen production system is provided, which can be used in the above-mentioned server. Figure 2 It is a flowchart of the hydrogen production power supply ripple monitoring method for a matching electrolytic water hydrogen production system according to an embodiment of the present invention, as Figure 2 shown, and this process includes the following steps:

[0042] Step S201, obtain the voltage time series signal output by the hydrogen production power supply, the working voltage time series signal, working current time series signal of the electrolytic cell in the electrolytic water hydrogen production system, the hydrogen production flow rate of the electrolytic cell, and the purity. For details, please refer to Figure 1 Step S101 of the shown embodiment, which will not be elaborated here.

[0043] In some alternative embodiments, the voltage time series signal output by the hydrogen production power supply is obtained through the following steps:

[0044] Step a1, obtain the voltage continuous signal collected by a preset sensor.

[0045] Exemplarily, the preset sensor can be a sensor for collecting the output voltage signal of the hydrogen production power supply. The specific content of the preset sensor is not limited in the embodiments of the present application, and those skilled in the art can determine it according to requirements.

[0046] Step a2, filter the voltage continuous signal using a preset filter to obtain a noise-reduced signal.

[0047] Exemplarily, in the embodiments of the present application, a filter can be constructed according to the pre-monitored ripple-related signal and the selected RC filter circuit to match the set cut-off frequency. The preset filter is used to filter the voltage continuous signal to suppress the high-frequency noise and interference of the signal and retain the low-frequency components of the signal.

[0048] Step a3, perform analog-to-digital conversion on the noise-reduced signal using an analog-to-digital converter to obtain a voltage-time series signal.

[0049] Exemplarily, in the embodiments of the present application, the continuous noise-reduced signal is converted into a digital signal by an analog-to-digital converter to facilitate subsequent data processing and storage work.

[0050] Step S202, calculate the ripple coefficient based on the voltage-time series signal output by the hydrogen production power supply.

[0051] Specifically, the above step S202 includes:

[0052] Step S2021, perform a fast Fourier transform on the voltage-time series signal to obtain a target signal.

[0053] Exemplarily, in the embodiments of the present application, the voltage-time series signal is processed using a fast Fourier transform to obtain a target signal.

[0054] Step S2022, extract the AC component information and DC component information from the target signal.

[0055] Exemplarily, in the embodiments of the present application, the AC component information includes the number of AC components and the amplitude of each AC component. The amplitude of each AC component is extracted from the target signal. The present application does not limit the specific extraction method, and those skilled in the art can determine it according to requirements. The DC component information may include, but is not limited to, the amplitude of the DC component.

[0056] Step S2023, calculate the effective value of the ripple voltage based on the AC component information.

[0057] Exemplarily, the ripple is usually a high-frequency AC component, and the effective value of the ripple voltage is calculated through the ripple amplitude and ripple frequency. The effective value of the ripple voltage can be calculated by the following formula:

[0058]

[0059] Among them, f≠0, N represents the number of AC components, V(f) represents the amplitude of the AC component, and V rms represents the effective value of the ripple voltage.

[0060] Step S2024, calculate the effective value of the DC voltage based on the DC component information.

[0061] Exemplarily, in the embodiments of the present application, the effective value of the DC voltage is calculated by the following formula:

[0062] V dc = |V(0)|

[0063] where V(0) represents the amplitude of the DC component, and V dc represents the effective value of the DC voltage.

[0064] Step S2025: Calculate the ripple coefficient based on the effective value of the ripple voltage and the effective value of the DC voltage.

[0065] Exemplarily, in the embodiments of the present application, the ripple coefficient is calculated by the following formula:

[0066]

[0067] where δ represents the ripple coefficient, V rms represents the effective value of the ripple voltage, and V dc represents the effective value of the DC voltage.

[0068] Step S203: Calculate the electrical energy utilization efficiency of the electrolyzer based on the working voltage time series signal, the working current time series signal, the hydrogen production flow rate, and the purity of the electrolyzer in the electrolytic hydrogen production system.

[0069] Specifically, the above step S203 includes:

[0070] Step S2031: Calculate the operating power of the electrolyzer based on the working voltage time series signal and the working current time series signal of the electrolyzer in the electrolytic hydrogen production system.

[0071] Exemplarily, in the embodiments of the present application, the operating power of the electrolyzer can be calculated by the following formula:

[0072]

[0073] where P avg represents the operating power of the electrolyzer, U represents the voltage of the electrolyzer, I represents the current of the electrolyzer, t represents the moment; T represents the sum of all moments in the working voltage time series signal, and can also be understood as the sampling duration of the signal segment.

[0074] Step S2032: Calculate the molar flow rate of hydrogen based on the hydrogen production flow rate and the purity of the electrolyzer.

[0075] Exemplarily, in the embodiments of the present application, calculate the liters per minute flow rate of hydrogen based on the hydrogen production flow rate and the purity of the electrolyzer, and specifically, it can be calculated by the following formula:

[0076] nPLMr = nPLM·α

[0077] Wherein, nPLM r represents the liter flow rate of hydrogen per minute; nPLM represents the flow rate of hydrogen produced by the electrolyzer, and this flow rate value is measured by a flow meter; α represents the purity of hydrogen, which is used to characterize the percentage of hydrogen content in the gas produced by the electrolyzer.

[0078] Calculate the molar flow rate of hydrogen based on the liter flow rate of hydrogen per minute, and it is specifically calculated by the following formula:

[0079]

[0080] Wherein, represents the molar flow rate of hydrogen, and the meanings of the remaining variables will not be elaborated.

[0081] Step S2033, calculate the power utilization efficiency of the electrolyzer based on the molar flow rate of hydrogen and the operating power of the electrolyzer.

[0082] Exemplarily, the power utilization efficiency of the electrolyzer is calculated by the following formula:

[0083]

[0084] Wherein, ε1 represents the power utilization efficiency of the electrolyzer, HHV is the calorific value of hydrogen combustion, and the meanings of the remaining variables will not be elaborated.

[0085] Step S204, calculate the Faraday efficiency of the electrolyzer based on the working current time series signal, the flow rate and purity of hydrogen produced by the electrolyzer. For details, please refer to Figure 1 Step S104 of the illustrated embodiment, which will not be elaborated here.

[0086] Step S205, determine the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the power utilization power of the electrolyzer and the Faraday efficiency. For details, please refer to Figure 1 Step S105 of the illustrated embodiment, which will not be elaborated here.

[0087] In this embodiment, a method for monitoring the ripple of the hydrogen production power supply matching the electrolytic water hydrogen production system is provided, which can be used for the above-mentioned server. Figure 3 is a flowchart of the method for monitoring the ripple of the hydrogen production power supply matching the electrolytic water hydrogen production system according to the embodiment of the present invention, as Figure 3 shown, and this process includes the following steps:

[0088] Step S301: Obtain the voltage-time series signal output by the hydrogen production power supply, the working voltage-time series signal, the working current-time series signal of the electrolyzer in the water electrolysis hydrogen production system, the hydrogen production flow rate and purity of the electrolyzer. For details, please refer to Figure 2 Step S201 of the embodiment shown herein, which will not be elaborated herein.

[0089] Step S302: Calculate the ripple coefficient based on the voltage-time series signal output by the hydrogen production power supply. For details, please refer to Figure 2 Step S202 of the embodiment shown herein, which will not be elaborated herein.

[0090] Step S303: Calculate the electrical energy utilization efficiency of the electrolyzer based on the working voltage-time series signal, the working current-time series signal of the electrolyzer in the water electrolysis hydrogen production system, the hydrogen production flow rate and purity of the electrolyzer. For details, please refer to Figure 2 Step S203 of the embodiment shown herein, which will not be elaborated herein.

[0091] Step S304: Calculate the Faraday efficiency of the electrolyzer based on the working current-time series signal, the hydrogen production flow rate and purity of the electrolyzer. For details, please refer to Figure 2 Step S204 of the embodiment shown herein, which will not be elaborated herein.

[0092] Step S305: Determine the influence degree of the ripple output by the hydrogen production power supply on the water electrolysis hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolyzer and the Faraday efficiency.

[0093] Specifically, the above Step S305 includes:

[0094] Step S3051: Obtain the preset thresholds corresponding to the ripple coefficient, the electrical energy utilization power of the electrolyzer and the Faraday efficiency respectively.

[0095] Exemplarily, the specific content of the preset threshold can be determined based on experience, and the embodiments of the present application do not make specific limitations thereto. In the embodiments of the present application, the preset threshold of the ripple coefficient may include but is not limited to 3%, the preset threshold of the electrical energy utilization rate of the electrolyzer may include but is not limited to 61%, and the preset threshold of the Faraday efficiency may include but is not limited to 61%.

[0096] Step S3052: Take the ripple coefficient, the electrical energy utilization power of the electrolyzer and the Faraday efficiency as three monitoring indicators. When the value of any one of the three monitoring indicators is greater than the corresponding preset threshold, record the alarm information.

[0097] Exemplarily, in the embodiments of the present application, when any one of the following occurs: the ripple coefficient is too high (recommended to be set at ≥3%), the Faraday efficiency is too low (recommended to be less than or equal to 73%), and the power utilization efficiency of the electrolyzer is too low (recommended to be less than or equal to 61%), alarm information is recorded.

[0098] In some alternative embodiments, step S305 further includes:

[0099] In step S3053, the ripple coefficient, the power utilization power of the electrolyzer, and the Faraday efficiency are used as three monitoring indicators. When the values of any two of the three monitoring indicators are greater than the corresponding preset thresholds, a visual information alarm is sent.

[0100] Exemplarily, in the embodiments of the present application, when any two of the following occur: the ripple coefficient is too high (recommended to be set at ≥3%), the Faraday efficiency is too low (recommended to be less than or equal to 73%), and the power utilization efficiency of the electrolyzer is too low (recommended to be less than or equal to 61%), a visual information alarm is issued.

[0101] In step S3054, when the ripple coefficient, the power utilization power of the electrolyzer, and the Faraday efficiency are all greater than the respectively corresponding preset thresholds, an auditory information alarm is sent.

[0102] Exemplarily, in the embodiments of the present application, when all of the following occur: the ripple coefficient is too high (recommended to be set at ≥3%), the Faraday efficiency is too low (recommended to be less than or equal to 73%), and the power utilization efficiency of the electrolyzer is too low (recommended to be less than or equal to 61%), an auditory information alarm is issued, which helps the operator to comprehensively grasp the operating conditions of the hydrogen production system.

[0103] Next, a specific implementation manner is used to specifically describe the ripple monitoring method for the hydrogen production power supply matching the electrolytic water hydrogen production system provided by the embodiments of the present application.

[0104] Embodiment:

[0105] A power supply ripple monitoring system for matching an electrolytic water hydrogen production system includes the following modules and shows the actual operation scheme:

[0106] 1. Signal extraction module:

[0107] In the first sub-unit, a sensor is used to capture the voltage and current signals output by the hydrogen production power supply, which should include the DC component and the AC ripple component.

[0108] In the second sub-unit, a circuit sensor is used to collect the working voltage and working current of the electrolyzer.

[0109] In the third sub-unit, a flow meter and a hydrogen sensor are connected to collect the hydrogen production flow rate and purity.

[0110] 2. Signal Processing Module:

[0111] 2-1. For the monitoring ripple-related signals extracted by the first subunit of the signal extraction module, select an appropriate RC filter circuit to match the set cut-off frequency K. Construct a filter to suppress the high-frequency noise and interference of the signal and retain the low-frequency components of the signal.

[0112] 2-2. For the monitoring ripple-related signals extracted by the first subunit of the signal extraction module, convert the continuous ripple analog signal into a digital signal through an analog-to-digital converter to facilitate subsequent data processing and storage work.

[0113] 3. Data Analysis and Storage Module:

[0114] 3-1. For the monitoring ripple-related signals extracted by the first subunit of the signal extraction module, process this section of the signal using the fast Fourier transform technology to obtain the ripple amplitude (the difference between the maximum and minimum peak values) and the ripple frequency (the frequency corresponding to the maximum peak value). And calculate the ripple coefficient from the above data:

[0115]

[0116] where V rms is the effective value of the ripple voltage, and V dc is the output voltage.

[0117] 3-2. For the electrolytic cell voltage and current signals extracted by the second subunit of the signal extraction module, calculate the operating power of the electrolytic cell:

[0118]

[0119] where U is the working voltage of the electrolytic cell in the signal section, I is the working current of the electrolytic cell in the signal section, and T is the sampling duration of the signal section.

[0120] 3-3. For the flowmeter data and hydrogen purity data extracted by the third subunit of the signal extraction module, calculate the liter flow per minute of hydrogen:

[0121] nPLM r = nPLM·α

[0122] where nPLM is the liter flow per minute of the gas measured by the flowmeter, and α is the percentage of hydrogen content in the gas. Further, the hydrogen molar flow can be calculated:

[0123]

[0124] 3-4. Based on the data information obtained in 3-2 and 3-3, the actual utilization efficiency of the electrolytic cell can be calculated:

[0125]

[0126] Among them, HHV is the combustion calorific value of hydrogen, is the hydrogen molar flow rate, and P avg is the actual working power of the electrolyzer.

[0127] 3-5. Based on the data extracted by the second / third sub-unit of the signal extraction module, the Faraday efficiency can be calculated to evaluate the loss of electric energy:

[0128]

[0129] Among them, F is the Faraday constant, i is the working current of the electrolyzer, A is the surface area of the electrolytic cell, is the actual number of moles of hydrogen produced per unit time.

[0130] 3-6. Based on the ripple level data obtained in 3-1, the electrolyzer working efficiency obtained in 3-4, and the Faraday efficiency obtained in 3-5, construct a comprehensive curve of ripple level - power utilization efficiency / hydrogen production efficiency to comprehensively evaluate the operating state of water electrolysis hydrogen production and the influence degree of the ripple level.

[0131] 3-7. Comprehensively organize all the primary data and secondary data obtained in the data analysis part, import them into the storage module for storage, or upload them to the energy management system to which the water electrolysis hydrogen production belongs if conditions permit, for working condition preservation for subsequent inquiry or renovation and upgrade.

[0132] 4. Alarm module:

[0133] 4-1. Set thresholds for the ripple level and hydrogen production efficiency respectively to determine whether the water electrolysis hydrogen production system is working under suitable working conditions.

[0134] 4-2. When any one of the following three situations occurs: the ripple level is too high (recommended to be set as ≥3%), the Faraday efficiency is too low (recommended to be set as less than or equal to 73%), and the actual utilization efficiency of the electrolyzer is too low (recommended to be set as less than or equal to 61%), record the alarm information; when two of them occur, send a visual information alarm; when all three occur, send an auditory information alarm.

[0135] The system provided by the embodiment of the present application effectively protects the water electrolysis hydrogen production system from the adverse effects of abnormal ripple levels, enhances the safe and stable operation ability of the system, reduces the power conversion loss, and helps to improve the hydrogen production efficiency of the hydrogen production system. At the same time, the large amount of data collected and stored by the present invention helps the operator to more comprehensively master the operating conditions of the hydrogen production system and provides data support for the subsequent upgrade and transformation of the system.

[0136] In this embodiment, a hydrogen production power supply ripple monitoring device for an electrolytic water hydrogen production system is also provided. This device is used to implement the above-mentioned embodiments and preferred implementation manners, and those that have been described will not be elaborated again. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0137] This embodiment provides a hydrogen production power supply ripple monitoring device for an electrolytic water hydrogen production system, as Figure 4 shown, including:

[0138] An acquisition module 401, configured to acquire a voltage time series signal output by the hydrogen production power supply, a working voltage time series signal of the electrolytic cell in the electrolytic water hydrogen production system, a working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell;

[0139] A first calculation module 402, configured to calculate a ripple coefficient based on the voltage time series signal output by the hydrogen production power supply;

[0140] A second calculation module 403, configured to calculate the electrical energy utilization efficiency of the electrolytic cell based on the working voltage time series signal, the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell in the electrolytic water hydrogen production system;

[0141] A third calculation module 404, configured to calculate the Faraday efficiency of the electrolytic cell based on the working current time series signal, the flow rate and purity of hydrogen generated by the electrolytic cell;

[0142] A determination module 405, configured to determine the influence degree of the ripple output by the hydrogen production power supply on the electrolytic water hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency.

[0143] In some alternative implementation manners, the voltage time series signal output by the hydrogen production power supply is acquired through the following steps:

[0144] Acquire a continuous voltage signal collected by a preset sensor;

[0145] Filter the continuous voltage signal by using a preset filter to obtain a noise-reduced signal;

[0146] Perform analog-to-digital conversion on the noise-reduced signal by using an analog-to-digital converter to obtain a voltage time series signal.

[0147] In some alternative implementation manners, the first calculation module 402 includes:

[0148] A processing sub-module, configured to perform a fast Fourier transform on the voltage time series signal to obtain a target signal;

[0149] An extraction sub-module, configured to extract AC component information and DC component information from a target signal;

[0150] A first calculation sub-module, configured to calculate the effective value of the ripple voltage based on the AC component information;

[0151] A second calculation sub-module, configured to calculate the effective value of the DC voltage based on the DC component information.

[0152] A ripple coefficient calculation sub-module, configured to calculate the ripple coefficient based on the effective value of the ripple voltage and the effective value of the DC voltage.

[0153] In some alternative embodiments, the second calculation module 403 includes:

[0154] A third calculation sub-module, configured to calculate the operating power of the electrolytic cell based on the time series signal of the operating voltage and the time series signal of the operating current of the electrolytic cell in the hydrogen production system by electrolyzing water;

[0155] A fourth calculation sub-module, configured to calculate the molar flow rate of hydrogen based on the flow rate and purity of the hydrogen generated by the electrolytic cell;

[0156] A fifth calculation sub-module, configured to calculate the electrical energy utilization efficiency of the electrolytic cell based on the molar flow rate of hydrogen and the operating power of the electrolytic cell.

[0157] In some alternative embodiments, the determination module 405 includes:

[0158] An acquisition sub-module, configured to acquire the preset thresholds corresponding to the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency respectively;

[0159] A first alarm sub-module, configured to use the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency as three monitoring indicators, and record alarm information when the value of any one of the three monitoring indicators is greater than the corresponding preset threshold.

[0160] In some alternative embodiments, the determination module 405 further includes:

[0161] A second alarm sub-module, configured to use the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency as three monitoring indicators, and send a visual information alarm when the values of any two of the three monitoring indicators are greater than the corresponding preset thresholds;

[0162] A third alarm sub-module, configured to send an auditory information alarm when the ripple coefficient, the electrical energy utilization power of the electrolytic cell, and the Faraday efficiency are all greater than the corresponding preset thresholds.

[0163] The further function descriptions of the above-mentioned modules and units are the same as those in the corresponding embodiments above, and will not be elaborated here.

[0164] In this embodiment, the hydrogen production power ripple monitoring device for the matching electrolytic water hydrogen production system is presented in the form of functional units. Here, the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and a memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0165] An embodiment of the present invention also provides a computer device having the above-mentioned Figure 4 hydrogen production power ripple monitoring device for the matching electrolytic water hydrogen production system shown.

[0166] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a computer device provided by an optional embodiment of the present invention. As shown in Figure 5 , the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including a high-speed interface and a low-speed interface. Each component communicates with each other using different buses and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed within the computer device, including instructions stored in the memory or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a set of blade servers, or a multi-processor system). Figure 5 In

[0167] the example of one processor 10 is taken.

[0168] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiments.

[0169] The memory 20 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some alternative embodiments, the memory 20 may optionally include a memory remotely provided with respect to the processor 10, and these remote memories can be connected to the computer device through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0170] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk, or a solid-state drive; the memory 20 may further include a combination of the above types of memories.

[0171] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or communication networks.

[0172] Embodiments of the present invention also provide a computer-readable storage medium. The method according to the embodiments of the present invention can be implemented in hardware, firmware, or be implemented as computer code that can be recorded on a storage medium, or be implemented as computer code originally stored in a remote storage medium or a non-transitory machine-readable storage medium and to be downloaded through a network and stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid-state drive, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code, and when the software or computer code is accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0173] A part of the present invention can be applied as a computer program product, for example, computer program instructions, which, when executed by a computer, can call or provide the methods and / or technical solutions according to the present invention through the operations of the computer. Those skilled in the art should understand that the forms in which computer program instructions exist in a computer-readable medium include but are not limited to source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include but are not limited to: the computer directly executes the instructions, or the computer compiles the instructions and then executes the corresponding compiled program, or the computer reads and executes the instructions, or the computer reads and installs the instructions and then executes the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to the computer.

[0174] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for monitoring the ripple of a hydrogen production power source for an electrolytic water hydrogen production system, characterized in that, The method includes: Obtaining the voltage time series signal output by the hydrogen production power supply, the working voltage time series signal, the working current time series signal of the electrolyzer in the water electrolysis hydrogen production system, the flow rate and purity of the hydrogen generated by the electrolyzer; Calculating the ripple coefficient based on the voltage time series signal output by the hydrogen production power supply; Calculating the electrical energy utilization efficiency of the electrolyzer based on the working voltage time series signal, the working current time series signal of the electrolyzer in the water electrolysis hydrogen production system, the flow rate and purity of the hydrogen generated by the electrolyzer; Calculating the Faraday efficiency of the electrolyzer based on the working current time series signal, the flow rate and purity of the hydrogen generated by the electrolyzer; Determining the influence degree of the ripple output by the hydrogen production power supply on the water electrolysis hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency.

2. The method according to claim 1, wherein The voltage time series signal output by the hydrogen production power supply is obtained through the following steps: Obtaining the voltage continuous signal collected by a preset sensor; Filtering the voltage continuous signal by using a preset filter to obtain a noise-reduced signal; Performing analog-to-digital conversion on the noise-reduced signal by using an analog-to-digital converter to obtain the voltage time series signal.

3. The method according to claim 1, characterized in that, The steps of calculating the ripple coefficient based on the voltage time series signal output by the hydrogen production power supply include: Performing a fast Fourier transform on the voltage time series signal to obtain a target signal; Extracting the AC component information and the DC component information from the target signal; Calculating the effective value of the ripple voltage based on the AC component information; Calculating the effective value of the DC voltage based on the DC component information; Calculating the ripple coefficient based on the effective value of the ripple voltage and the effective value of the DC voltage.

4. The method according to claim 1 or 3, characterized in that, The steps of calculating the electrical energy utilization efficiency of the electrolyzer based on the working voltage time series signal, the working current time series signal of the electrolyzer in the water electrolysis hydrogen production system, the flow rate and purity of the hydrogen generated by the electrolyzer include: Calculating the operating power of the electrolyzer based on the working voltage time series signal and the working current time series signal of the electrolyzer in the water electrolysis hydrogen production system; Calculating the molar flow rate of hydrogen based on the flow rate and purity of the hydrogen generated by the electrolyzer; Calculating the electrical energy utilization efficiency of the electrolyzer based on the molar flow rate of hydrogen and the operating power of the electrolyzer.

5. The method according to claim 3, characterized in that The steps of determining the influence degree of the ripple output by the hydrogen production power supply on the water electrolysis hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency include: Obtaining the preset thresholds corresponding to the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency respectively; Taking the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency as three monitoring indicators, and when the value of any one of the three monitoring indicators is greater than the corresponding preset threshold, recording alarm information.

6. The method according to claim 5, characterized in that, The steps of determining the influence degree of the ripple output by the hydrogen production power supply on the water electrolysis hydrogen production system based on the ripple coefficient, the electrical energy utilization power of the electrolyzer, and the Faraday efficiency further include: Taking the ripple coefficient, the power utilization efficiency of the electrolytic cell, and the Faraday efficiency as three monitoring indicators, when the values of any two of the three monitoring indicators are greater than the corresponding preset thresholds, send a visual information alarm; When the ripple coefficient, the power utilization efficiency of the electrolytic cell, and the Faraday efficiency are all greater than their respective corresponding preset thresholds, send an auditory information alarm.

7. A hydrogen production power ripple monitoring device for an electrolytic water hydrogen production system, characterized in that, The device includes: An acquisition module, configured to acquire the voltage time series signal output by the hydrogen production power supply, the working voltage time series signal, the working current time series signal of the electrolytic cell in the water electrolysis hydrogen production system, the hydrogen production flow rate and purity of the electrolytic cell; A first calculation module, configured to calculate the ripple coefficient based on the voltage time series signal output by the hydrogen production power supply; A second calculation module, configured to calculate the power utilization efficiency of the electrolytic cell based on the working voltage time series signal, the working current time series signal of the electrolytic cell in the water electrolysis hydrogen production system, the hydrogen production flow rate and purity of the electrolytic cell; A third calculation module, configured to calculate the Faraday efficiency of the electrolytic cell based on the working current time series signal, the hydrogen production flow rate and purity of the electrolytic cell; A determination module, configured to determine the influence degree of the ripple output by the hydrogen production power supply on the water electrolysis hydrogen production system based on the ripple coefficient, the power utilization power of the electrolytic cell, and the Faraday efficiency.

8. A computer device, characterized in that, Includes: A memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to execute the method for monitoring the ripple of the hydrogen production power supply matching the water electrolysis hydrogen production system according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, Computer instructions are stored on the computer-readable storage medium, and the computer instructions are used to cause a computer to execute the method for monitoring the ripple of the hydrogen production power supply matching the water electrolysis hydrogen production system according to any one of claims 1 to 6.

10. A computer program product, characterized in that, Includes computer instructions, and the computer instructions are used to cause a computer to execute the method for monitoring the ripple of the hydrogen production power supply matching the water electrolysis hydrogen production system according to any one of claims 1 to 6.

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