Electro-hydrogen-chemical coupling system control method and device, medium, equipment and product

Abstract

The invention relates to an electricity-hydrogen-chemical coupling system control method and device, a medium, equipment and a product. The method comprises the steps of determining a target load curve of an electricity-hydrogen-chemical coupling system in response to a received peak regulation instruction sent by a power grid dispatching center; according to the target load curve and the system prediction output parameters, constructing a target operation function of the system; and solving the target operation function, determining the control quantity of the electro-hydrogen-chemical coupling system, and adjusting the operation state of the system according to the control quantity. By determining the target load curve of the system and combining the system prediction output parameters output by the state prediction model, the target operation function is constructed and solved, the control quantity of the system is determined, and the target operation function can comprehensively consider the current state and the future load demand of the system. The operation condition of the system at each moment in the future can be reasonably planned so as to ensure that the operation condition accords with the peak regulation instruction, and thus the accuracy of system control is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of new energy technology, and in particular, to a control method, device, medium, equipment and product for an electricity-hydrogen-chemical coupling system. Background Art

[0002] The electric-hydrogen-chemical coupling system refers to a system that converts electrical energy into hydrogen energy by electrolyzing water. The system can use electrical energy to decompose water into hydrogen and oxygen, store hydrogen, and transport hydrogen to downstream chemical plants. The power grid dispatching center of the hydrogen production station can issue dispatching instructions to the electric-hydrogen-chemical coupling system to adjust the operating state of the electric-hydrogen-chemical coupling system, but the adjustment method in the relevant technology is usually based on independent control of operating temperature, pressure, power and other factors, and its control accuracy is low, making it difficult to achieve the dispatching target in the dispatching instruction. Summary of the invention

[0003] The main purpose of the present disclosure is to provide a control method, device, medium, equipment and product for an electric-hydrogen-chemical coupling system, aiming to solve the above-mentioned technical problems.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a method for controlling an electric-hydrogen-chemical coupling system, comprising: In response to receiving a peak load shaving instruction sent by a power grid dispatching center, determining a target load curve of the electricity-hydrogen-chemical coupling system; According to the target load curve and the system predicted output parameters, a target operation function of the electricity-hydrogen-chemical coupling system is constructed; wherein the system predicted output parameters are output by a state prediction model of the electricity-hydrogen-chemical coupling system established in advance; Solving the target operation function to determine the control quantity of the electricity-hydrogen-chemical coupling system; According to the control variable, the operating state of the electricity-hydrogen-chemical coupling system is adjusted.

[0005] Optionally, the peak shaving instruction includes a target power; Determining the target load curve of the electricity-hydrogen-chemical coupling system includes: Acquiring performance indicator information of the electricity-hydrogen-chemical coupling system; wherein the performance indicator information includes duration and adjustment rate; According to the target power, the duration, the adjustment rate and the current power of the electric-hydrogen-chemical coupling system, the load change of the electric-hydrogen-chemical coupling system is planned to determine the target load curve.

[0006] Optionally, constructing a target operation function of the electricity-hydrogen-chemical coupling system according to the target load curve and the system predicted output parameter includes: According to the target load curve and the system predicted output parameters, a target operation function is constructed as shown in the following relational expression:

[0007] Among them, J is the target running function, is the load power output by the state prediction model at time k+i, is the target load at time k+i, m is the prediction interval, is the output tracking weighting coefficient; is the input weighting coefficient, u(k+j-1) is the control input at time k+j-1, M is the control interval, M≤m.

[0008] Optionally, solving the target operation function includes: The target operation function is solved by using an optimization algorithm and the constraints of the electric-hydrogen-chemical coupling system.

[0009] Optionally, the optimization algorithm includes a particle swarm algorithm, a dynamic programming method, and a maximum principle method.

[0010] Optionally, the constraints include the maximum rate of lifting and lowering the load of the electrolyzer, the minimum hydrogen production load of the electrolyzer, the maximum hydrogen production load of the electrolyzer, the maximum capacity of the hydrogen storage tank, the minimum capacity of the hydrogen storage tank, and the maximum hydrogen supply rate of the chemical plant.

[0011] Optionally, the electricity-hydrogen-chemical coupling system comprises a plurality of electrolyzers and a plurality of hydrogen production auxiliary systems; The electric-hydrogen-chemical coupling system includes one or more of an electric-hydrogen storage system, an electric-hydrogen-ammonia system, and an electric-hydrogen-alcohol system; The electrolytic cell includes one or more of alkaline electrolysis, proton exchange membrane electrolysis, solid oxide electrolysis, and anion exchange membrane electrolysis; The step of adjusting the operating state of the electricity-hydrogen-chemical coupling system according to the control amount corresponding to each moment includes: At each moment, obtaining the power load demand of each electrolyzer and each hydrogen production auxiliary system; Generate a power allocation instruction corresponding to each electrolyzer and each hydrogen production auxiliary system according to the control amount, the power load demand of each electrolyzer and each hydrogen production auxiliary system; According to the power allocation instruction, the operating power of each of the electrolyzers and each of the hydrogen production auxiliary systems is adjusted.

[0012] According to a second aspect of an embodiment of the present disclosure, there is provided a control device for an electric-hydrogen-chemical coupling system, comprising: a target load curve determination module, configured to determine a target load curve of the electricity-hydrogen-chemical coupling system in response to receiving a peak load shaving instruction sent by a power grid dispatching center; a target operation function determination module, configured to construct a target operation function of the electric-hydrogen-chemical coupling system according to the target load curve and the system predicted output parameter; wherein the system predicted output parameter is output by a state prediction model of the electric-hydrogen-chemical coupling system established in advance; A control amount determination module is configured to solve the target operation function and determine the control amount of the electricity-hydrogen-chemical coupling system; The operating state adjustment module is configured to adjust the operating state of the electricity-hydrogen-chemical coupling system according to the control amount.

[0013] According to a third aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps of the electric-hydrogen-chemical coupling system control method provided in the first aspect of the present disclosure are implemented.

[0014] According to a fourth aspect of an embodiment of the present disclosure, there is provided an electronic device, including: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the steps of the electric-hydrogen-chemical coupling system control method provided in the first aspect of the present disclosure.

[0015] According to a fifth aspect of an embodiment of the present disclosure, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the steps of the method for controlling an electric-hydrogen-chemical coupling system provided in the first aspect of the present disclosure.

[0016] The above technical solution proposed in the embodiment of the present disclosure determines the target load curve of the electric-hydrogen-chemical coupling system by responding to the peak-shaving instruction of the power grid dispatching center, and combines the system prediction output parameters output by the state prediction model to construct and solve the target operation function, determine the control quantity corresponding to each moment, and adjust the system operation according to the control quantity. The electric-hydrogen-chemical coupling system participates in the peak-shaving process of the power grid as an adjustable load. Since the target operation function can comprehensively consider the current state and future load demand of the electric-hydrogen-chemical coupling system, it can reasonably plan the operation of the system at various moments in the future to ensure that its operation complies with the peak-shaving instruction, thereby improving the accuracy of system control.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 The figure is a flow chart of a control method of an electricity-hydrogen-chemical coupling system according to an exemplary embodiment.

[0019] Figure 2 is a schematic diagram of a target load curve according to an exemplary embodiment.

[0020] Figure 3 It is a block diagram showing an operation architecture of an electricity-hydrogen-chemical coupling system according to an exemplary embodiment.

[0021] Figure 4 is a block diagram of a control device for an electricity-hydrogen-chemical coupling system according to an exemplary embodiment.

[0022] Figure 5 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0023] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0024] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the location and with the authorization given by the owner of the corresponding device.

[0025] The electric-hydrogen-chemical coupling system refers to a system that converts electrical energy into hydrogen energy by electrolyzing water. In this system, electrical energy can be used to decompose water into hydrogen and oxygen, store hydrogen, and transport hydrogen to downstream chemical plants. The power grid dispatching center of the power company can issue dispatching instructions to the electric-hydrogen-chemical coupling system to adjust the operating status of the electric-hydrogen-chemical coupling system.

[0026] The regulation method in the related technology is usually based on independent control of operating temperature, pressure, power and other factors. For example, the electrolyzer in the electric-hydrogen-chemical coupling system receives the power instruction of the power grid dispatching center to produce hydrogen under the conditions of satisfying multiple constraints, and supplies hydrogen to the downstream coal chemical plant through compression storage. The control method for temperature constraints includes: when the electrolyzer is working, if its temperature exceeds the threshold, the proportional-integral (PI) controller is used to adjust the cooling water flow rate, so as to control the electrolyzer temperature to a certain value, so as to suppress the temperature fluctuation under variable load conditions; the control method for pressure constraints includes: using the PI controller to control the actual electrolyzer The hydrogen pressure in the electrolyzer is controlled to obtain a reference value of the hydrogen discharge rate of the electrolyzer, and at the same time, the compression power reference value of the compressor is calculated according to the hydrogen discharge rate reference value, the hydrogen pressure of the hydrogen storage tank, and the hydrogen pressure in the electrolyzer through flow control. Then, the compression power reference value is input into the compressor model to ensure that the hydrogen pressure in the electrolyzer is constant; the control method for the power constraint condition includes: when the hydrogen storage amount in the hydrogen storage tank reaches its upper limit value, the electrolyzer is forced to shut down, and the reference power of the electrolyzer constrained by the hydrogen storage amount is 0 at this time; when the hydrogen storage amount in the hydrogen storage tank reaches its lower limit value, the electrolyzer operates at maximum power, and the reference power of the electrolyzer is the power instruction value in the power grid peak load instruction.

[0027] In the above-mentioned adjustment method, each constraint control loop is relatively independent, and the complex coupling relationship between various conditions such as power, temperature, pressure, etc. during the operation of the electrolytic cell is not considered. Therefore, its control accuracy is low and it is difficult to achieve the scheduling target in the scheduling instruction.

[0028] In addition, the above-mentioned adjustment method only specifically adjusts the operation of a single electrolytic cell and cannot control the operation of an electrolytic cell cluster.

[0029] To this end, the present disclosure provides a control method, device, medium, equipment and product for an electric-hydrogen-chemical coupling system. The specific implementation methods of the present disclosure are described in detail below in conjunction with the accompanying drawings.

[0030] Figure 1 FIG. 1 is a flow chart showing a control method of an electric-hydrogen-chemical coupling system according to an exemplary embodiment. Figure 1 As shown, the electric-hydrogen-chemical coupling system control method can be applied to a hydrogen production station, including the following steps S101-S103.

[0031] In S101, in response to receiving a peak load shaving instruction sent by a power grid dispatching center, a target load curve of the electricity-hydrogen-chemical coupling system is determined.

[0032] In one embodiment of the present disclosure, the electric-hydrogen-chemical coupling system of the hydrogen production station participates in the peak load regulation process of the power grid as an adjustable load. In this process, the power grid dispatching center can monitor the operating status of the electric-hydrogen-chemical coupling system in real time, and initiate a peak load regulation instruction to regulate the operation of the electric-hydrogen-chemical coupling system in the hydrogen production station, wherein the peak load regulation instruction refers to an instruction to regulate the load of the operating status of the electric-hydrogen-chemical coupling system. According to the load regulation requirements in the peak load regulation instruction, the target load of the electric-hydrogen-chemical coupling system is planned, and then, a curve of the power demand change of the electric-hydrogen-chemical coupling system in the future period, that is, the target load curve, can be obtained.

[0033] In S102, a target operation function of the electricity-hydrogen-chemical coupling system is constructed according to the target load curve and the system predicted output parameters.

[0034] In one embodiment of the present disclosure, the system prediction output parameters are output by a state prediction model of a pre-established electric-hydrogen-chemical coupling system, and the state prediction model is established based on the historical operation data of the electric-hydrogen-chemical coupling system, and can be predicted based on the input real-time operation data, and output the system prediction output parameters of the electric-hydrogen-chemical coupling system in the future. For example, the state prediction model may include but is not limited to a buffer tank capacity prediction model, a chemical plant hydrogen consumption prediction model, and an electrolyzer hydrogen production prediction model; the input variables of the state prediction model may include but are not limited to the electrolyzer hydrogen production power, the electrolyzer auxiliary system power, the ramp rate of the raw hydrogen supply flow rate, the electrolyzer state control, etc. The output variables of the state prediction model, i.e., the above-mentioned system prediction output parameters, may be but are not limited to the hydrogen production of the hydrogen production station.

[0035] Based on the system prediction output parameters output by the state prediction model and the above-mentioned target load curve, the target operation function of the electricity-hydrogen-chemical coupling system can be constructed. In this way, the current state and future load demand of the electricity-hydrogen-chemical coupling system can be comprehensively considered, and the operation of the system at various times in the future can be reasonably planned to ensure that its operation complies with the peak-shaving instructions.

[0036] For example, the above-mentioned state prediction model may include a buffer tank capacity prediction model shown in the following relation (1): (1) in, is the buffer tank capacity at time k, is the production rate of the nth electrolytic cell at time k, is the total hydrogen consumption rate of the chemical plant at time k, is the time interval between time k and time k+1.

[0037] As another example, the above-mentioned state prediction model may include a hydrogen consumption prediction model of a chemical plant as shown in the following relational expression (2): (2) in, is the ramp rate of the hydrogen supply flow rate at time k.

[0038] As another example, the above-mentioned state prediction model may include an electrolyzer hydrogen production prediction model shown in the following relation (3): (3) in, is the power consumption of the nth hydrogen generator at time k, is the auxiliary machine power consumption, is the standby state of the nth hydrogen generator at time k, is the operating status of the nth hydrogen generator at time k, is a 0-1 variable when the nth hydrogen generator switches from standby state to operating state at time k, A1 and A2 are efficiency systems, and A3 is the hydrogen production shortage when the hydrogen generator switches from standby state to operating state.

[0039] In addition, in some other examples, the state space equation shown in the following relation (4) can be established according to the above multiple state prediction models: (4) Among them, A is the state matrix, B is the input matrix or control matrix, C is the output matrix, and D is the direct transfer matrix.

[0040] In S103, the target operation function is solved to determine the control quantity of the electricity-hydrogen-chemical coupling system.

[0041] In one embodiment of the present disclosure, solving the above-mentioned target operation function can obtain a control quantity sequence of the electric-hydrogen-chemical coupling system in multiple moments after the current moment, and then, the first control quantity in the sequence is taken as the control quantity of the electric-hydrogen-chemical coupling system. In the subsequent steps, the control quantity can be used to control the electric-hydrogen-chemical coupling system at the current moment, and then, at the next current moment, the above-mentioned S102 is repeated to generate a new target operation function. By solving the target operation function, a new control quantity sequence can be obtained, and the first control quantity in the new control quantity sequence is taken to control the electric-hydrogen-chemical coupling system at the current moment. Repeating this process can realize rolling optimization control of the electric-hydrogen-chemical coupling system.

[0042] For example, the control quantity sequence of the electric-hydrogen-chemical coupling system within a moments after the current moment k can be {u|k, u|k+1, u|k+2,…, u|k+a}, where u includes the hydrogen production power of the electrolyzer and the power consumption of the hydrogen production auxiliary system.

[0043] In S104, the operating state of the electricity-hydrogen-chemical coupling system is adjusted according to the control amount.

[0044] In one embodiment of the present disclosure, at each moment, the control amount at the corresponding moment is applied to the electric-hydrogen-chemical coupling system to achieve continuous rolling optimization control of its operating state.

[0045] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: by responding to the peak-shaving instruction of the power grid dispatching center, determining the target load curve of the electric-hydrogen-chemical coupling system, and combining the system prediction output parameters output by the state prediction model, constructing and solving the target operation function, determining the control quantity corresponding to each moment, and adjusting the system operation according to the control quantity. The electric-hydrogen-chemical coupling system participates in the peak-shaving process of the power grid as an adjustable load. Since the target operation function can comprehensively consider the current state and future load demand of the electric-hydrogen-chemical coupling system, it can reasonably plan the operation of the system at various moments in the future to ensure that its operation complies with the peak-shaving instruction, thereby improving the accuracy of system control.

[0046] As an optional implementation, the peak-shaving instruction includes a target power; determining the target load curve of the electric-hydrogen-chemical coupling system in S101 may include: obtaining performance indicator information of the electric-hydrogen-chemical coupling system; wherein the performance indicator information includes duration and regulation rate; based on the target power, duration, regulation rate and current power of the electric-hydrogen-chemical coupling system, planning the load change of the electric-hydrogen-chemical coupling system to determine the target load curve.

[0047] In one embodiment of the present disclosure, the performance indicator information refers to the parameters of various performances of the electric-hydrogen-chemical coupling system during operation, wherein the duration refers to the length of time to maintain the target power during the regulation process, and the regulation rate refers to the speed of regulating from the current power to the target power. After obtaining the target power, duration, regulation rate, and current power, the change path of the system power from the current power to the target power within the duration can be planned according to the above regulation rate, that is, load change planning is performed, and the target load sequence for a period of time in the future is determined, and then the target load curve can be obtained, wherein the target load curve can be a linear change or a nonlinear change that takes into account the inertia of the system. It can be specifically planned according to the actual peak-shaving demand and the actual situation of the electric-hydrogen-chemical coupling system, and this application does not impose specific restrictions on this.

[0048] For example, the target load sequence of the electricity-hydrogen-chemical coupling system within a time points after the current time point k can be ,in, It is a peak load monitoring point, which is located at the connection point between the electric-hydrogen-chemical coupling system and the power grid, and can include the hydrogen production power and auxiliary machine power of the electric-hydrogen-chemical coupling system.

[0049] Figure 2 is a schematic diagram showing a target load curve according to an exemplary embodiment. Figure 2 As shown, P1 is the current power of the electric-hydrogen-chemical coupling system, P2 is the target power in the peak-shaving instruction, and D is the support time. V is the adjustment rate; the electric-hydrogen-chemical coupling system receives the peak-shaving instruction at time T1, and starts power adjustment from the current power P1 at a rate V, reaches the target power P2 at time T2, and keeps the power stable at the target power P2 during the support time D from time T2 to time T3.

[0050] As an optional implementation, constructing a target operation function of the electricity-hydrogen-chemical coupling system according to the target load curve and the system predicted output parameters in S102 may include: constructing a target operation function shown in the following relational expression (5) according to the target load curve and the system predicted output parameters: (5) Among them, J is the target running function, The state model predicts the output load power at time k+i, is the target load at time k+i, m is the prediction interval, is the output tracking weighting coefficient; is the input weighting coefficient, u(k+j-1) is the control input at time k+j-1, M is the control interval, M≤m.

[0051] As an optional implementation, solving the target operation function in S103 may include: solving the target operation function through an optimization algorithm and constraints of the electricity-hydrogen-chemical coupling system.

[0052] In one embodiment of the present disclosure, a suitable optimization algorithm can be selected according to the complexity of the target operating function, and the optimization algorithm can be run to solve the target operating function to obtain the optimal control quantity at each moment. In this process, the optimization algorithm can perform iterative calculations until the optimal solution that satisfies all constraints is found, thereby obtaining the optimal control quantity at each moment to improve the accuracy of subsequent regulation of the operation of the electricity-hydrogen-chemical coupling system and the overall operating efficiency of the system.

[0053] In one embodiment, the optimization algorithm may include but is not limited to a particle swarm algorithm, a dynamic programming method, and a maximum principle method.

[0054] In one embodiment, the constraints may include but are not limited to the maximum rate of lifting and lowering the electrolyzer load, the minimum hydrogen production load of the electrolyzer, the maximum hydrogen production load of the electrolyzer, the maximum capacity of the hydrogen storage tank, the minimum capacity of the hydrogen storage tank, and the maximum hydrogen supply rate of the chemical plant.

[0055] For example, the constraint condition st shown in the following relation (6) may be included: (6) in, is the hydrogen production power of the nth electrolyzer at time k, is the minimum hydrogen production load of the nth electrolyzer, is the maximum hydrogen production load of the nth electrolyzer, is the capacity of the hydrogen storage tank at time k, is the minimum capacity of the hydrogen storage tank, is the maximum capacity of the hydrogen storage tank, is the power variation of the nth electrolytic cell from time k to time k+1, Indicates the maximum rate of increase or decrease of the power of the nth electrolytic cell, is the ramp rate of hydrogen supply flow rate at time k, is the maximum total hydrogen consumption rate of the chemical plant, , The upper and lower limits of the hydrogen load ramp rate.

[0056] As an optional implementation, adjusting the operating state of the electric-hydrogen-chemical coupling system according to the control quantity corresponding to each moment in S104 may include: obtaining the power load demand of each electrolyzer and each hydrogen production auxiliary system at each moment; generating power allocation instructions corresponding to each electrolyzer and each hydrogen production auxiliary system according to the control quantity, each electrolyzer and the power load demand of each hydrogen production auxiliary system; and adjusting the operating power of each electrolyzer and each hydrogen production auxiliary system according to the power allocation instructions.

[0057] In one embodiment of the present disclosure, Figure 3 is a block diagram of an operation architecture of an electric-hydrogen-chemical coupling system according to an exemplary embodiment. The electric-hydrogen-chemical coupling system may include one or more of an electric-hydrogen storage system, an electric-hydrogen-ammonia system, and an electric-hydrogen-alcohol system, such as Figure 3As shown, the electric-hydrogen-chemical coupling system includes multiple electrolyzers and multiple hydrogen production auxiliary systems, wherein the electrolyzers may include one or more of alkaline electrolysis, proton exchange membrane electrolysis, solid oxide electrolysis, and anion exchange membrane electrolysis. The electrolyzers are mainly used to use electrical energy for electrochemical reactions to generate hydrogen, and the hydrogen production auxiliary systems are mainly used to complete other auxiliary tasks, such as controlling temperature, storing hydrogen, transporting hydrogen, etc., and may include cooling units, compressors, purification systems, alkali liquid pumps and other equipment. The processing module may execute the above steps S101-S103 after receiving the peak load instruction sent by the power grid dispatching center, and may also obtain the power load demand of the electrolyzers 1-n and the hydrogen production auxiliary systems 1-n, and then run the power allocation algorithm to allocate the target power of each electrolyzer and hydrogen production auxiliary system in combination with the control amount obtained in S103, that is, P1 el -P n el 、P1 aux -P n aux , and then obtain the power allocation instructions for each electrolyzer and hydrogen production auxiliary system; then, adjust the operating power of each electrolyzer and hydrogen production auxiliary system according to each power allocation instruction, so as to realize the adjustment of the electrolyzer cluster and hydrogen production auxiliary system cluster in the electric-hydrogen-chemical coupled peak-shaving system, which can maximize the cluster effect and improve the robustness of the control method of the electric-hydrogen-chemical coupled system.

[0058] In addition, in some embodiments, when no peak load regulation instruction is received from the grid dispatching center, the hydrogen production station can adjust the operation of the electricity-hydrogen-chemical coupling system according to its own production plan.

[0059] Figure 4 FIG. 1 is a block diagram of a control device for an electric-hydrogen-chemical coupling system according to an exemplary embodiment. Figure 4 As shown, the electric-hydrogen-chemical coupling system control device 400 may include a target load curve determination module 401 , a target operation function determination module 402 , a control amount determination module 403 and an operation state adjustment module 404 .

[0060] The target load curve determination module 401 is configured to determine the target load curve of the electricity-hydrogen-chemical coupling system in response to receiving a peak load shaving instruction sent by a power grid dispatching center; The target operation function determination module 402 is configured to construct a target operation function of the electric-hydrogen-chemical coupling system according to the target load curve and the system predicted output parameter; wherein the system predicted output parameter is output by a state prediction model of the electric-hydrogen-chemical coupling system established in advance; A control amount determination module 403 is configured to solve the target operation function and determine the control amount of the electricity-hydrogen-chemical coupling system; The operating state adjustment module 404 is configured to adjust the operating state of the electricity-hydrogen-chemical coupling system according to the control amount.

[0061] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: by responding to the peak-shaving instruction of the power grid dispatching center, determining the target load curve of the electric-hydrogen-chemical coupling system, and combining the system prediction output parameters output by the state prediction model, constructing and solving the target operation function, determining the control quantity corresponding to each moment, and adjusting the system operation according to the control quantity. The electric-hydrogen-chemical coupling system participates in the peak-shaving process of the power grid as an adjustable load. Since the target operation function can comprehensively consider the current state and future load demand of the electric-hydrogen-chemical coupling system, it can reasonably plan the operation of the system at various moments in the future to ensure that its operation complies with the peak-shaving instruction, thereby improving the accuracy of system control.

[0062] Optionally, the peak load regulation instruction includes a target power; the target load curve determination module 401 is further configured to: Acquiring performance indicator information of the electricity-hydrogen-chemical coupling system; wherein the performance indicator information includes duration and adjustment rate; According to the target power, the duration, the adjustment rate and the current power of the electric-hydrogen-chemical coupling system, the load change of the electric-hydrogen-chemical coupling system is planned to determine the target load curve.

[0063] Optionally, the target operation function determination module 402 is further configured to: According to the target load curve and the system predicted output parameters, a target operation function is constructed as shown in the following relational expression:

[0064] Among them, J is the target running function, is the load power output by the state prediction model at time k+i, is the target load at time k+i, m is the prediction interval, is the output tracking weighting coefficient; is the input weighting coefficient, u(k+j-1) is the control input at time k+j-1, M is the control interval, M≤m.

[0065] Optionally, the control amount determination module 403 is further configured to: The target operation function is solved by using an optimization algorithm and the constraints of the electric-hydrogen-chemical coupling system.

[0066] Optionally, the optimization algorithm includes a particle swarm algorithm, a dynamic programming method, and a maximum principle method.

[0067] Optionally, the constraints include the maximum rate of lifting and lowering the load of the electrolyzer, the minimum hydrogen production load of the electrolyzer, the maximum hydrogen production load of the electrolyzer, the maximum capacity of the hydrogen storage tank, the minimum capacity of the hydrogen storage tank, and the maximum hydrogen supply rate of the chemical plant.

[0068] Optionally, the electric-hydrogen-chemical coupling system includes a plurality of electrolyzers and a plurality of hydrogen production auxiliary systems; the electric-hydrogen-chemical coupling system includes one or more of an electric hydrogen storage system, an electric hydrogen ammonia system, and an electric hydrogen alcohol system; the electrolyzer includes one or more of alkaline electrolysis, proton exchange membrane electrolysis, solid oxide electrolysis, and anion exchange membrane electrolysis; the operation state adjustment module 404 is further configured as follows: At each moment, obtaining the power load demand of each electrolyzer and each hydrogen production auxiliary system; Generate a power allocation instruction corresponding to each electrolyzer and each hydrogen production auxiliary system according to the control amount, the power load demand of each electrolyzer and each hydrogen production auxiliary system; According to the power allocation instruction, the operating power of each of the electrolyzers and each of the hydrogen production auxiliary systems is adjusted.

[0069] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0070] Figure 5 FIG. 5 is a block diagram of an electronic device 500 according to an exemplary embodiment. Figure 5 As shown, the electronic device 500 may include: a processor 501 , a memory 502 . The electronic device 500 may also include one or more of a multimedia component 503 , an input / output (I / O) interface 504 , and a communication component 505 .

[0071] The processor 501 is used to control the overall operation of the electronic device 500 to complete all or part of the steps in the above-mentioned control method of the electric-hydrogen-chemical coupling system. The memory 502 is used to store various types of data to support the operation of the electronic device 500, and these data may include, for example, instructions for any application or method used to operate on the electronic device 500, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 502 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 503 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, which is used to receive external audio signals. The received audio signal may be further stored in the memory 502 or sent through the communication component 505. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 504 provides an interface between the processor 501 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 505 is used for wired or wireless communication between the electronic device 500 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 5G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 505 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0072] In some embodiments, the electronic device 500 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned electric-hydrogen-chemical coupling system control method.

[0073] In addition, in one embodiment, the embodiment of the present disclosure further provides a computer-readable storage medium including program instructions, and when the program instructions are executed by the processor, the steps of the above-mentioned electric-hydrogen-chemical coupling system control method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 502 including program instructions, and the above-mentioned program instructions can be executed by the processor 501 of the electronic device 500 to complete the above-mentioned electric-hydrogen-chemical coupling system control method.

[0074] In addition, in one embodiment, an embodiment of the present disclosure also provides a computer program product, which is a computer program that can be executed by a programmable device, and the computer program has a code portion for executing the above-mentioned electric-hydrogen-chemical coupling system control method when executed by the programmable device.

[0075] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0076] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0077] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A control method for an electric-hydrogen-chemical coupling system, characterized in that: include: In response to receiving a peak load shaving instruction sent by a power grid dispatching center, determining a target load curve of the electricity-hydrogen-chemical coupling system; According to the target load curve and the system predicted output parameters, a target operation function of the electricity-hydrogen-chemical coupling system is constructed; wherein the system predicted output parameters are output by a state prediction model of the electricity-hydrogen-chemical coupling system established in advance; Solving the target operation function to determine the control quantity of the electricity-hydrogen-chemical coupling system; According to the control variable, the operating state of the electricity-hydrogen-chemical coupling system is adjusted.

2. The method according to claim 1, characterized in that The peak load regulation instruction includes a target power; Determining the target load curve of the electricity-hydrogen-chemical coupling system includes: Acquiring performance indicator information of the electricity-hydrogen-chemical coupling system; wherein the performance indicator information includes duration and adjustment rate; According to the target power, the duration, the adjustment rate and the current power of the electric-hydrogen-chemical coupling system, the load change of the electric-hydrogen-chemical coupling system is planned to determine the target load curve.

3. The method according to claim 1, characterized in that The target operation function of the electricity-hydrogen-chemical coupling system is constructed according to the target load curve and the system predicted output parameter, including: According to the target load curve and the system predicted output parameters, a target operation function shown in the following relational expression is constructed: Among them, J is the target running function, is the load power output by the state prediction model at time k+i, is the target load at time k+i, m is the prediction interval, is the output tracking weighting coefficient; is the input weighting coefficient, u(k+j-1) is the control input at time k+j-1, M is the control interval, M≤m.

4. The method according to claim 1, characterized in that: The step of solving the target operation function comprises: The target operation function is solved by using an optimization algorithm and the constraints of the electric-hydrogen-chemical coupling system.

5. The method according to claim 4, characterized in that The optimization algorithms include particle swarm optimization, dynamic programming, and maximum principle.

6. The method according to claim 4, characterized in that The constraints include the maximum rate of lifting and lowering the load of the electrolyzer, the minimum hydrogen production load of the electrolyzer, the maximum hydrogen production load of the electrolyzer, the maximum capacity of the hydrogen storage tank, the minimum capacity of the hydrogen storage tank, and the maximum hydrogen supply rate of the chemical plant.

7. The method according to any one of claims 1 to 6, characterized in that The electricity-hydrogen-chemical coupling system includes a plurality of electrolyzers and a plurality of hydrogen production auxiliary systems; The electric-hydrogen-chemical coupling system includes one or more of an electric-hydrogen storage system, an electric-hydrogen-ammonia system, and an electric-hydrogen-alcohol system; The electrolytic cell includes one or more of alkaline electrolysis, proton exchange membrane electrolysis, solid oxide electrolysis, and anion exchange membrane electrolysis; The step of adjusting the operating state of the electricity-hydrogen-chemical coupling system according to the control amount corresponding to each moment includes: At each moment, obtaining the power load demand of each electrolyzer and each hydrogen production auxiliary system; Generate a power allocation instruction corresponding to each electrolyzer and each hydrogen production auxiliary system according to the control amount, the power load demand of each electrolyzer and each hydrogen production auxiliary system; According to the power allocation instruction, the operating power of each of the electrolyzers and each of the hydrogen production auxiliary systems is adjusted.

8. A control device for an electric-hydrogen-chemical coupling system, characterized in that: include: a target load curve determination module, configured to determine a target load curve of the electricity-hydrogen-chemical coupling system in response to receiving a peak load shaving instruction sent by a power grid dispatching center; a target operation function determination module, configured to construct a target operation function of the electric-hydrogen-chemical coupling system according to the target load curve and the system predicted output parameter; wherein the system predicted output parameter is output by a state prediction model of the electric-hydrogen-chemical coupling system established in advance; A control amount determination module is configured to solve the target operation function and determine the control amount of the electricity-hydrogen-chemical coupling system; The operating state adjustment module is configured to adjust the operating state of the electricity-hydrogen-chemical coupling system according to the control amount.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

10. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 7.

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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