Electric hydrogen production load control method and device, readable medium and electronic equipment

Abstract

The invention discloses an electric hydrogen production load control method and device, a readable medium and electronic equipment, and relates to the field of electric power control systems. The efficient control of electrical energy can be improved. The electrical hydrogen production load control method comprises the following steps: determining an electrical model when the electrical hydrogen production equipment works; acquiring electrical parameters of working of the electrical hydrogen production equipment, and calculating identification parameters of the electrical hydrogen production equipment based on the electrical parameters and the electrical model; acquiring a conversion model of the electrical hydrogen production equipment connected with a power grid, wherein the conversion model comprises adjustable parameters of a converter connected with the electrical hydrogen production equipment and the power grid; calculating a parameter value of an adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter; and adjusting the adjustable parameter based on the parameter value so as to control the load power of the electric hydrogen production equipment.

Description

Technical Field

[0001] The present application relates to the field of power control systems, and in particular to a method, device, readable medium and electronic device for controlling electric hydrogen production load. Background Art

[0002] As energy strategies gradually move toward large-scale renewable energy generation and networking, the impact of renewable energy uncertainty on the safe and stable operation of the power grid has become an urgent problem that needs to be solved. From the perspective of economy and feasibility, it is of great significance to use load demand-side response as a new type of flexible resource to participate in grid peak and frequency regulation and absorb renewable energy.

[0003] At present, the regulation of load resources is mainly concentrated on small-capacity and dispersed objects such as electric vehicles and temperature control loads, which is not conducive to the unified regulation of the power dispatching center. The electric hydrogen load has the characteristics of large power capacity, fast regulation speed, centralized and easy transformation, and short-term regulation does not affect production safety. It has huge power regulation potential. However, there is no effective method for power regulation of electric hydrogen loads. Therefore, realizing efficient control of electric hydrogen loads based on actual production data is an urgent problem to be solved to enable it to participate in grid demand response. Summary of the invention

[0004] The present application provides a method, device, readable medium and electronic device for controlling the load of hydrogen production by electricity, which can control the load of hydrogen production equipment on the power grid, and is conducive to improving energy control efficiency.

[0005] In a first aspect, the present application provides a method for controlling load of hydrogen production by electricity, comprising:

[0006] Determine the electrical model of the electric hydrogen production equipment when it is working;

[0007] Acquire electrical parameters of the electric hydrogen production equipment, and calculate identification parameters of the electric hydrogen production equipment based on the electrical parameters and the electrical model;

[0008] Acquire a conversion model for connecting the electric hydrogen production device to a power grid, wherein the conversion model includes adjustable parameters of a converter connected to the electric hydrogen production device and the power grid;

[0009] Calculate the parameter value of the adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter;

[0010] The adjustable parameter is adjusted based on the parameter value to control the load power of the electric hydrogen production equipment.

[0011] In this exemplary embodiment, the identification parameters of the electric hydrogen production equipment can be determined through the electrical characteristics of the electric hydrogen production equipment and the conversion model between the electric hydrogen production equipment and the power grid, and then the adjustment value of the adjustable parameter at the expected load power is determined, and the load power of the electric hydrogen production equipment is adjusted to stabilize at the expected load power, thereby achieving the control of the load required by the electric hydrogen production equipment. In addition, by adjusting the adjustable parameters to achieve the control of the load required by the electric hydrogen production equipment, the electric hydrogen production equipment can be more adapted to the actual power grid transmission, thereby changing in response to the adjustment of the power grid, which is conducive to saving energy consumption and improving power control efficiency.

[0012] In an exemplary embodiment, the conversion model is:

[0013]

[0014] Among them, U E is the DC voltage of the electric hydrogen production equipment; U ac is the bus voltage of the power grid; D is the equivalent value of the saturated reactor, which is expressed in the s domain as:

[0015]

[0016] Among them, K p With K i is the proportional integral link coefficient, P ref is the expected load power.

[0017] In an exemplary embodiment, the electrical model includes:

[0018] U E =I el ΣR+U re

[0019] Among them, U E is the DC voltage of the electric hydrogen production equipment, I el is the DC current of the electric hydrogen production equipment, ΣR is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment, and the equivalent resistance and equivalent potential are identification parameters.

[0020] In an exemplary embodiment, the step of obtaining electrical parameters of the hydrogen production equipment and calculating identification parameters of the hydrogen electrolysis equipment based on the electrical parameters and the electrical model includes:

[0021] Acquiring electrical parameters of the electric hydrogen production equipment when it is in operation, wherein the electrical parameters include multiple groups of voltages and currents;

[0022] The electrical model is solved by using the least square method based on the multiple groups of voltages and currents to obtain the equivalent resistance and equivalent potential of the electric hydrogen production equipment.

[0023] In an exemplary embodiment, the calculating the parameter value of the adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter includes:

[0024] Calculate the required voltage of the expected load power of the electric hydrogen production equipment based on the identification parameters;

[0025] Calculating the required current of the electric hydrogen production equipment according to the required voltage;

[0026] The conversion model is solved based on the required voltage and the required current to obtain a parameter value of an adjustable parameter, where the adjustable parameter is an equivalent value of a saturated reactor.

[0027] In an exemplary embodiment, the step of calculating the required voltage of the expected load power of the electric hydrogen production equipment according to the identified parameters includes:

[0028] Obtain a load power relationship formula for the electric hydrogen production equipment, the load power relationship formula being:

[0029]

[0030] Among them, P el is the load power of the electric hydrogen production equipment, U E is the DC voltage of the electric hydrogen production equipment, ΣR is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment;

[0031] When the load power of the electric hydrogen production equipment is the expected load power, the load power relationship is solved based on the expected load power, the equivalent resistance and the equivalent potential to obtain the required voltage.

[0032] In an exemplary embodiment, adjusting the adjustable parameter based on the parameter value to control the load power of the electric hydrogen production device includes:

[0033] Obtaining the current of the electric hydrogen production equipment;

[0034] Determine a difference between the current current and the required current, and calculate an adjustment value of the adjustable parameter based on the difference;

[0035] A control instruction is generated according to the adjustment value to control the adjustment parameter to reach the parameter value.

[0036] In a second aspect, the present application provides an electric hydrogen production load control device, comprising:

[0037] An electrical model determination module, used to determine the electrical model of the electric hydrogen production equipment when it is working;

[0038] A parameter identification module, used to obtain the electrical parameters of the electric hydrogen production equipment, and calculate the identification parameters of the electric hydrogen production equipment based on the electrical parameters and the electrical model;

[0039] A conversion model determination module, used to obtain a conversion model for connecting the electric hydrogen production equipment to the power grid, wherein the conversion model includes adjustable parameters of a converter connected to the electric hydrogen production equipment and the power grid;

[0040] A conversion parameter calculation module, used to calculate the parameter value of the adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter;

[0041] A parameter adjustment module is used to adjust the adjustable parameter based on the parameter value to control the load power of the electric hydrogen production equipment.

[0042] In a third aspect, the present application provides an electronic device, the electronic device comprising a memory and one or more processors. The memory stores one or more computer programs, the computer programs comprising instructions, and when the instructions are executed by the processor, the electronic device can execute the electric hydrogen production load control method as in the first aspect.

[0043] In a fourth aspect, the present application provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on an electronic device, the electronic device executes the electric hydrogen production load control method as in the first aspect.

[0044] In a fifth aspect, the present application provides a computer program product. When the computer program product is run on an electronic device, the electronic device executes the electric hydrogen production load control method as described in the first aspect.

[0045] It can be understood that the beneficial effects that can be achieved by the above-mentioned hydrogen production load control device, electronic device, computer-readable storage medium, and computer program product can refer to the beneficial effects in the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A schematic flow chart of a method for controlling the load of hydrogen produced by electricity provided in an embodiment of the present application;

[0047] Figure 2 A schematic diagram of the structure of the electric hydrogen production load control device provided in an embodiment of the present application;

[0048] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish the same items or similar items with substantially the same functions and effects. For example, the first chip and the second chip are only used to distinguish different chips, and their order is not limited. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit the difference. It should be noted that in the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design solutions. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way. In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more.

[0050] It should be noted that the “at…” in the embodiments of the present application may be the instant when a certain situation occurs, or may be a period of time after the occurrence of a certain situation, and the embodiments of the present application do not specifically limit this.

[0051] The implementation of this embodiment will be described in detail below with reference to the accompanying drawings.

[0052] The present embodiment provides a method for controlling the load of hydrogen produced by electricity. By way of example, the method can be applied to various electronic devices such as computers (PCs), tablet computers, virtual reality / augmented reality devices, wearable devices, industrial computers, and vehicle computers; it can also be applied to servers, cloud computing, server clusters, etc., and the present embodiment does not make any special limitation on this.

[0053] Figure 1 A flow chart of a method for controlling the load of hydrogen produced by electricity provided in an embodiment of the present application is shown.

[0054] like Figure 1 As shown, the electric hydrogen production load control method may include the following:

[0055] Step 101: Determine the electrical model of the electric hydrogen production equipment when it is in operation.

[0056] According to the production process of hydrogen production by electricity, the main electrical equipment for hydrogen production by electricity is the electrolyzer. In this embodiment, the hydrogen production equipment by electricity may refer to the electrolyzer. The electrical model of the hydrogen production equipment by electricity can be obtained by modeling according to the volt-ampere characteristics of the electrolyzer, as follows:

[0057] U E =I el ΣR+U re (1)

[0058] Among them, U E is the DC voltage of the electric hydrogen production equipment, I el is the DC current of the electric hydrogen production equipment, ΣR is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment. The electrical model includes identification parameters that need to be identified, specifically equivalent resistance and equivalent potential.

[0059] Step 102: Acquire the electrical parameters of the hydrogen production equipment, and calculate the identification parameters of the hydrogen electrolysis equipment based on the electrical parameters and the electrical model.

[0060] The electrical parameters of the electric hydrogen production equipment when in operation may include DC voltage and DC current. The DC voltage and DC current can be obtained by measuring the DC voltage and DC current when the electric hydrogen production equipment is in operation. Substituting the measured DC voltage and DC current into formula (1) and solving the equivalent resistance and equivalent potential, the equivalent resistance and equivalent potential of the electric hydrogen production equipment can be obtained.

[0061] Equivalent resistance ΣR and equivalent potential U re It is very important to control the active power of hydrogen production load. In order to realize the modeling of hydrogen production load control, it is necessary to identify the parameters through field testing of the electrolyzer. Formula (1) represents the DC voltage U of the electrolyzer. E and DC current I el The linear relationship can be obtained through this formula:

[0062] U re =U E -I el ·ΣR (2)

[0063] Among them, the equivalent resistance ΣR and the equivalent potential U re To identify the parameters, U E and I el As measurable data, it can be directly read in the monitoring main station of the hydrogen production plant. After reading the values ​​of DC voltage and DC current, they can be substituted into the above formula (2) to calculate the equivalent resistance and equivalent potential.

[0064] In an exemplary embodiment, electrical parameters of the hydrogen production device are obtained when it is working, and the electrical parameters include multiple sets of voltages and currents; the electrical model is solved using the least squares method based on the multiple sets of voltages and currents to obtain the equivalent resistance ΣR and equivalent potential U of the hydrogen production device. re .

[0065] By substituting multiple sets of voltages and currents into the above formula (1) or formula (2), the equivalent resistance and equivalent potential can be calculated using the least squares method.

[0066] For example, the following table shows the average voltage and current data of the workshop electrolyzer series (three spans and four series connected in series) during the experimental period in a production test of a hydrogen production plant.

[0067] Table 1 Voltage and current of production test electrolytic cell series

[0068] Serial number Current / kA Voltage / V 1 13.22 37.54*4 2 12.53 38.96*4 3 12.41 39.07*4 4 18.31 52.13*4 5 12.81 37.36*4 6 14.52 43.06*4

[0069] Based on the data in Table 1, the electrical model of formula (1) is solved and the equivalent resistance ΣR = 9.738 mΩ and the equivalent electromotive force U can be identified by using the least squares method. re =29.4V.

[0070] Step 103: Obtain a conversion model for connecting the electric hydrogen production equipment to a power grid, wherein the conversion model includes adjustable parameters of a converter connected to the electric hydrogen production equipment and the power grid.

[0071] DC bus voltage U of the electric hydrogen production equipment E The high-voltage bus voltage U of the power grid connected to the electric hydrogen production load ac The relationship is as follows:

[0072]

[0073] This relationship is the conversion model for connecting the electric hydrogen production equipment to the power grid.

[0074] Among them, U E is the DC voltage of the electric hydrogen production equipment; U ac is the bus voltage of the power grid; D is the equivalent value of the saturated reactor, which is expressed in the s domain as:

[0075]

[0076] Among them, K p With K i is the proportional integral link coefficient, P ref is the expected load power.

[0077] The expected load power refers to the power required by the electric hydrogen production equipment when it is working, which is output by the power grid. The adjustable parameters can include the equivalent value of the saturated reactor D, the proportional integral link coefficient K p With K i .

[0078] Since the electric hydrogen production load is connected to a Buck converter (DC-DC Converter), the Buck converter can convert the voltage and current output by the power grid. The Buck converter can achieve the stability of the output voltage and current by adding a feedback link. The power of the electric hydrogen production load can be controlled by using this feedback link and formula (4).

[0079] Step 104: Calculate parameter values ​​of adjustable parameters corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameters.

[0080] Specifically, the required voltage of the expected load power of the electric hydrogen production equipment is calculated according to the identification parameters; the required current of the electric hydrogen production equipment is calculated according to the required voltage; the conversion model is solved based on the required voltage and the required current to obtain the parameter value of the adjustable parameter, and the adjustable parameter is the equivalent value of the saturated reactor.

[0081] The DC voltage corresponding to the expected load power is the required voltage, and the corresponding current is the required current.

[0082] According to the relationship between power and current and voltage, the load power relationship of the electric hydrogen production equipment can be obtained. The load power relationship of the electric hydrogen production equipment is as follows:

[0083]

[0084] Among them, P el The load power required for hydrogen production from electricity.

[0085] Among them, P el is the load power of the electric hydrogen production equipment, U E is the DC voltage of the electric hydrogen production equipment, ΣR is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment. When the load power of the electric hydrogen production equipment is the expected load power, the load power relationship is solved based on the expected load power, the equivalent resistance and the equivalent potential to obtain the required voltage.

[0086] When the load power is the expected load power, the expected load power is combined with the obtained identification parameters ΣR and U re Substituting into the above formula (5), the required voltage under the expected load power can be calculated.

[0087] The required current can be obtained from the required voltage. By solving the conversion model of formula (3) and formula (4) in combination with the required voltage and the required current, the equivalent value of the saturated reactor can be calculated. The equivalent value is the parameter value of the adjustable parameter.

[0088] Step 105: Adjust the adjustable parameter based on the parameter value to control the load power of the electric hydrogen production equipment.

[0089] The electric hydrogen production load has the following basic electrical characteristics: Electric hydrogen production is a thermal energy storage load, that is, it relies on low voltage and high current to pass through the electrolyte to achieve its production. The inertia time constant of the thermal energy storage load is large, and a short-term reduction in power supply will not have a significant impact on the temperature. This property is the main support for the electric hydrogen production load to adjust its own power in a short time and participate in grid regulation.

[0090] By adjusting the equivalent value of the saturated reactor, the duty cycle of the DC rectifier conversion circuit can be adjusted, thereby changing the DC side bus voltage U re , and monitor the corresponding DC current I el Specifically, the current current of the electric hydrogen production equipment is obtained; the difference between the current current and the required current is determined, and the adjustment value of the adjustable parameter is calculated based on the difference; and a control instruction is generated according to the adjustment value to control the adjustment parameter to reach the parameter value.

[0091] The adjustment value refers to the adjustment degree of the adjustable parameters, namely, the equivalent value of the saturated reactor and the proportional-integral link coefficient.

[0092] The optimal adjustment value for achieving the difference can be obtained by multiple simulations of the calculated difference. Proportional-Integral (PI) control and pulse width modulation (PWM) control are used to obtain the control instructions corresponding to the adjustment value, and the adjustable parameters are adjusted to adjust the duty cycle D in the DC-DC direct current conversion circuit to achieve the equivalent value of the saturated reactor to reach the expected parameter value, and the electric hydrogen production load power reaches the reference load power.

[0093] In this implementation, a load control model for hydrogen production is established based on the process flow of hydrogen production load; the model parameters are identified in combination with actual production test data; on this basis, a method for controlling the power of hydrogen production load is proposed by considering the feedback regulation characteristics of the DC converter of hydrogen production load. The above results can provide basic conditions for electrolysis loads represented by hydrogen production to participate in power demand response, which is of great significance to the development of flexible regulation resources on the load side and the safe, stable and economic operation of the power system.

[0094] Furthermore, this embodiment also provides a hydrogen production load control device, which can be used to execute the above hydrogen production load control method.

[0095] like Figure 2As shown, the electric hydrogen production load control device 200 may specifically include: an electrical model determination module 201, used to determine the electrical model of the electric hydrogen production equipment when it is working; a parameter identification module 202, used to obtain the electrical parameters of the electric hydrogen production equipment when it is working, and calculate the identification parameters of the electric hydrogen production equipment based on the electrical parameters and the electrical model; a conversion model determination module 203, used to obtain the conversion model of the electric hydrogen production equipment connected to the power grid, and the conversion model includes adjustable parameters of the converter connected to the electric hydrogen production equipment and the power grid; a conversion parameter calculation module 204, used to calculate the parameter value of the adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter; a parameter adjustment module 205, used to adjust the adjustable parameter based on the parameter value to control the load power of the electric hydrogen production equipment.

[0096] In an exemplary embodiment, the conversion model is:

[0097]

[0098] Among them, U E is the DC voltage of the electric hydrogen production equipment; U ac is the bus voltage of the power grid; D is the equivalent value of the saturated reactor, which is expressed in the s domain as:

[0099]

[0100] Among them, K p With K i is the proportional integral link coefficient, P ref is the expected load power.

[0101] In an exemplary embodiment, the electrical model includes:

[0102] U E =I el ΣR+U re

[0103] Among them, U E is the DC voltage of the electric hydrogen production equipment, I el is the DC current of the electric hydrogen production equipment, ΣR is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment, and the equivalent resistance and equivalent potential are identification parameters.

[0104] In an exemplary embodiment, the parameter identification module 202 is specifically used to: obtain electrical parameters of the electric hydrogen production equipment when it is working, and the electrical parameters include multiple sets of voltages and currents; solve the electrical model using the least squares method based on the multiple sets of voltages and currents to obtain the equivalent resistance and equivalent potential of the electric hydrogen production equipment.

[0105] In an exemplary embodiment, the conversion parameter calculation module is specifically used to: calculate the required voltage of the expected load power of the electric hydrogen production equipment according to the identification parameters; calculate the required current of the electric hydrogen production equipment according to the required voltage; solve the conversion model based on the required voltage and the required current to obtain the parameter value of the adjustable parameter, and the adjustable parameter is the equivalent value of the saturated reactor.

[0106] In an exemplary embodiment, the conversion parameter calculation module is specifically used to obtain a load power relationship formula of the electric hydrogen production equipment, and the load power relationship formula is:

[0107]

[0108] Among them, P el is the load power of the electric hydrogen production equipment, U E is the DC voltage of the electric hydrogen production equipment, ΣR is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment; when the load power of the electric hydrogen production equipment is the expected load power, the load power relationship is solved based on the expected load power, the equivalent resistance and the equivalent potential to obtain the required voltage.

[0109] In an exemplary embodiment, the parameter adjustment module is specifically used to: obtain the current current of the electric hydrogen production equipment; determine the difference between the current current and the required current, and calculate the adjustment value of the adjustable parameter based on the difference; generate a control instruction according to the adjustment value to control the adjustment parameter to reach the parameter value.

[0110] The specific details of each module or unit in the above-mentioned electric hydrogen production load control device have been described in detail in the corresponding electric hydrogen production load control method, so they will not be repeated here.

[0111] The embodiment of the present application also provides an electronic device, Figure 3 A schematic diagram of the structure of an electronic device suitable for implementing the embodiments of the present disclosure is shown. Figure 3 The electronic device 600 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0112] like Figure 3As shown, electronic device 600 includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage part 608 into a random access memory (RAM) 603. In RAM 603, various programs and data required for system operation are also stored. CPU 601, ROM 602 and RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to bus 604.

[0113] The following components are connected to the I / O interface 605: an input section 606 including a keyboard, a mouse, etc.; an output section 607 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN card, a modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 610 as needed, so that a computer program read therefrom is installed into the storage section 608 as needed.

[0114] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable storage medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 609, and / or installed from the removable medium 611. When the computer program is executed by the central processing unit (CPU) 601, the above-mentioned functions defined in the embodiment of the present application are executed.

[0115] It should be noted that the computer-readable medium shown in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0116] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0117] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware, and the units described may also be arranged in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0118] As another aspect, the present application also provides a computer-readable medium, which may be included in the electronic device described in the above embodiment; or may exist independently without being assembled into the electronic device. The above computer-readable medium carries one or more programs, and the one or more programs include instructions, and when the instructions are executed by the electronic device, the electronic device implements the method described in the above embodiment.

[0119] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0120] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for controlling load of hydrogen production by electricity, characterized in that: include: Determine the electrical model of the electric hydrogen production equipment when it is working; Acquire electrical parameters of the electric hydrogen production equipment, and calculate identification parameters of the electric hydrogen production equipment based on the electrical parameters and the electrical model; Acquire a conversion model for connecting the electric hydrogen production device to a power grid, wherein the conversion model includes adjustable parameters of a converter connected to the electric hydrogen production device and the power grid; Calculate the parameter value of the adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter; The adjustable parameter is adjusted based on the parameter value to control the load power of the electric hydrogen production equipment.

2. The method for controlling the load of hydrogen production by electricity according to claim 1, characterized in that: The conversion model is: Among them, U E is the DC voltage of the electric hydrogen production equipment; U ac is the bus voltage of the power grid; D is the equivalent value of the saturated reactor, which is expressed in the s domain as: Among them, K p With K i is the proportional integral coefficient, P ref is the expected load power.

3. The method for controlling the load of hydrogen production by electricity according to claim 1, characterized in that: The electrical model includes: IN E =I el ·∑R+U re Among them, U E is the DC voltage of the electric hydrogen production equipment, I el is the DC current of the electric hydrogen production equipment, ∑R is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment, and the equivalent resistance and equivalent potential are identification parameters.

4. The method for controlling the load of hydrogen production by electricity according to claim 3, characterized in that: The step of obtaining the electrical parameters of the hydrogen production equipment and calculating the identification parameters of the hydrogen electrolysis equipment based on the electrical parameters and the electrical model includes: Acquiring electrical parameters of the electric hydrogen production equipment when it is in operation, wherein the electrical parameters include multiple groups of voltages and currents; The electrical model is solved by using the least square method based on the multiple groups of voltages and currents to obtain the equivalent resistance and equivalent potential of the electric hydrogen production equipment.

5. The method for controlling the load of hydrogen production by electricity according to claim 2, characterized in that: The step of calculating the parameter value of the adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter includes: Calculate the required voltage of the expected load power of the electric hydrogen production equipment based on the identification parameters; Calculating the required current of the electric hydrogen production equipment according to the required voltage; The conversion model is solved based on the required voltage and the required current to obtain a parameter value of an adjustable parameter, where the adjustable parameter is an equivalent value of a saturated reactor.

6. The method for controlling the load of hydrogen production by electricity according to claim 5, characterized in that: The step of calculating the required voltage of the expected load power of the electric hydrogen production equipment according to the identified parameters includes: Obtain a load power relationship formula for the electric hydrogen production equipment, the load power relationship formula being: Among them, P el is the load power of the electric hydrogen production equipment, U E is the DC voltage of the electric hydrogen production equipment, ∑R is the equivalent resistance of the electric hydrogen production equipment, U re is the equivalent potential of the electric hydrogen production equipment; When the load power of the electric hydrogen production equipment is the expected load power, the load power relationship is solved based on the expected load power, the equivalent resistance and the equivalent potential to obtain the required voltage.

7. The method for controlling the load of hydrogen production by electricity according to claim 5, characterized in that: The step of adjusting the adjustable parameter based on the parameter value to control the load power of the electric hydrogen production equipment includes: Obtaining the current of the electric hydrogen production equipment; Determine a difference between the current current and the required current, and calculate an adjustment value of the adjustable parameter based on the difference; A control instruction is generated according to the adjustment value to control the adjustment parameter to reach the parameter value.

8. A load control device for hydrogen production by electricity, characterized in that: include: An electrical model determination module is used to determine the electrical model of the electric hydrogen production equipment when it is working; A parameter identification module, used to obtain the electrical parameters of the electric hydrogen production equipment, and calculate the identification parameters of the electric hydrogen production equipment based on the electrical parameters and the electrical model; A conversion model determination module, used to obtain a conversion model for connecting the electric hydrogen production equipment to the power grid, wherein the conversion model includes adjustable parameters of a converter connected to the electric hydrogen production equipment and the power grid; A conversion parameter calculation module, used to calculate the parameter value of the adjustable parameter corresponding to the expected load power of the electric hydrogen production equipment according to the conversion model and the identification parameter; A parameter adjustment module is used to adjust the adjustable parameter based on the parameter value to control the load power of the electric hydrogen production equipment.

9. A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the processor executes the method for controlling the load of hydrogen produced by electricity according to any one of claims 1 to 7.

10. An electronic device, characterized in that: It comprises a processor and a memory, wherein one or more computer programs are stored in the memory, and the one or more computer programs include instructions. When the instructions are executed by the electronic device, the electronic device executes the electric hydrogen production load control method described in any one of claims 1-7.

Images