A new energy hydrogen production integrated simulation platform and its construction method

Abstract

The present invention discloses a new energy hydrogen production integrated simulation platform and a method for building the same. The integrated simulation platform includes: a dispatching optimization layer, a fast coordination layer, a local control layer, a steady-state dispatching optimization network, and a transient coordination control network. The steady-state dispatching optimization network forms a network among the dispatching optimization layer, the fast coordination layer, and the local control layer to complete energy management and optimal dispatching under steady-state conditions. The transient coordination control network forms a network between the fast coordination layer and the local control layer to achieve energy balance and system stability under transient conditions. The building method includes: electrical characteristic modeling of a real-time digital simulation system, process equipment modeling of an excitation simulation system, and development of a strategy program for an entity control device. Through this system, full-process and multi-condition new energy hydrogen production full-process simulation from electricity to process, from grid connection to off-grid, and from start-up to shutdown can be realized, providing a verification platform for the research and development optimization, feasibility study, safety and economic evaluation, etc. of new energy hydrogen production technology.

Description

Technical Field

[0001] The present invention relates to the field of new energy hydrogen production, and particularly to a new energy hydrogen production integrated simulation platform and a method for building the same. Background Art

[0002] New energy hydrogen production refers to the method of preparing hydrogen by electrolyzing water using clean energy such as wind power and photovoltaic power. No pollution is generated during the entire production process from electricity to process. However, the new energy hydrogen production process covers two majors: electricity and process. How to match the electrical control that needs to be quickly adjusted with the process control part with large delay and large inertia has always been the focus of research in the field of new energy hydrogen production. In addition, new energy hydrogen production involves scenarios such as electricity, heat, and chemical processes. Due to the large number of systems involved, simulation analysis is particularly important. Therefore, it is necessary to provide a verification platform for the research and development optimization, feasibility study, safety and economic evaluation, etc. of new energy hydrogen production technology through simulation means.

[0003] At present, the simulation platforms for new energy hydrogen production are single in specialty and can only achieve the simulation of the electrical side or the process side alone, and cannot achieve the integration of the two majors of electricity and process. Therefore, in the simulation of new energy hydrogen production, especially in the off-grid operation simulation, it is impossible to verify the optimization logic of electrical control and process control on the same simulation platform, nor can it verify the coupling and matching degree of electrical control and process control, resulting in the inability to fully verify the results of feasibility studies in the early stage of the project, and the lack of in-depth evaluation of the safe and economic operation of the system, which is not conducive to the development of new energy hydrogen production technology. Summary of the Invention

[0004] In order to break the current situation of the separation of the two majors of electricity and process in the new energy hydrogen production simulation platform and overcome the problem of low coupling and matching degree between electrical control and process control, the present invention proposes a new energy hydrogen production integrated simulation platform and a method for building the same. The new energy hydrogen production integrated simulation platform established by using this building method can realize the full-process and multi-condition new energy hydrogen production full-process simulation from electricity to process, from grid-connected to off-grid, and from start-up to shutdown, providing a verification platform for the research and development optimization, feasibility study, safety and economic evaluation, etc. of new energy hydrogen production technology.

[0005] The first aspect of the present invention provides a new energy hydrogen production integrated simulation platform, including: a scheduling optimization layer, a fast coordination layer, a local control layer, a steady-state scheduling optimization network, and a transient coordination control network;

[0006] The scheduling optimization layer is used for energy management and optimal scheduling under steady-state conditions; the fast coordination layer is used for energy balance and system stability control under transient conditions; the local control layer includes new energy hydrogen production equipment; the scheduling optimization layer, the fast coordination layer, and the local control layer are networked to form a steady-state scheduling optimization network; the fast coordination layer and the local control layer are networked to form a transient coordination control network;

[0007] The devices in the dispatching optimization layer, fast coordination layer, and in-situ control layer are entity control devices and their supporting program software or simulation models.

[0008] Preferably, the dispatching optimization layer includes an energy management system entity control device and its supporting program software;

[0009] The fast coordination layer includes a fast coordination control system entity control device and its supporting program software.

[0010] Preferably, the new energy hydrogen production equipment includes: new energy power generation equipment, new energy power generation control system, energy storage inverter, energy storage chemical battery, hydrogen production process control system, and hydrogen production process equipment;

[0011] At least a part of the new energy power generation equipment, new energy power generation control system, energy storage inverter, energy storage chemical battery, hydrogen production process control system, and hydrogen production process equipment is implemented as a real-time digital simulation model, at least a part is implemented as an excitation simulation model, and the equipment other than the simulation model is implemented in the form of an entity control device and its supporting program software.

[0012] Preferably, the new energy power generation equipment, new energy power generation control system, energy storage chemical battery, and hydrogen production process equipment are real-time digital simulation models for simulating the electrical characteristics of the new energy power generation equipment, new energy power generation control system, energy storage chemical battery, and hydrogen production process equipment.

[0013] Preferably, the hydrogen production process equipment is simultaneously implemented as a real-time digital simulation model and an excitation simulation model. The real-time digital simulation model is used to simulate the electrical characteristics of the hydrogen production process equipment, and the excitation simulation model is used to simulate the actual process flow and operating parameters of the hydrogen production process equipment;

[0014] The energy storage inverter and hydrogen production process control system are implemented with entity control devices and their supporting program software.

[0015] Preferably, the new energy power generation equipment and the new energy power generation control system are real-time digital simulation models, and data interaction is realized through internal wiring or communication protocols in the real-time digital simulation system;

[0016] The energy storage inverter and the energy storage chemical battery are respectively an entity control device and its supporting program software and a real-time digital simulation model, and data interaction is realized through hard wiring or communication protocols;

[0017] The hydrogen production process control system and the hydrogen production process equipment are respectively an entity control device and its supporting program software and a simulation model, and data interaction is realized through a fast communication protocol.

[0018] The dispatching optimization layer, fast coordination layer, and in-situ control layer form a steady-state dispatching optimization network through fast communication protocols;

[0019] The fast coordination layer and the in-situ control layer form a transient coordination control network through a fast communication protocol;

[0020] The internal devices of the in-situ control layer achieve data interaction through hard wiring or a fast communication protocol.

[0021] The second aspect of the present invention provides a method for building a new energy hydrogen production integrated simulation platform for building the new energy hydrogen production integrated simulation platform, including the following steps:

[0022] Determine the capacity configuration of each part of the new energy hydrogen production, including: new energy power generation capacity configuration, energy storage capacity configuration, and hydrogen production system capacity configuration;

[0023] Determine the boundary between the physical control device and the simulation system;

[0024] Based on the capacity configuration, the boundary between the physical control device and the simulation system, develop a strategy program for the physical control device and download it to the physical control device;

[0025] Implement the devices in the in-situ control layer with real-time digital simulation, excitation simulation, physical control devices, and supporting program software;

[0026] Network the steady-state scheduling optimization network and the transient coordination control network to obtain a new energy hydrogen production integrated simulation platform for performing simulations.

[0027] Preferably, determine that the hydrogen production process equipment in the in-situ control layer is implemented with both a real-time digital simulation model and an excitation simulation model.

[0028] Preferably, determine that the new energy power generation equipment, new energy power generation control system, energy storage chemical battery, and hydrogen production process equipment are real-time digital simulation models; determine that the hydrogen production process equipment is an excitation simulation model; determine that the energy storage inverter and hydrogen production process control system are implemented with physical control devices and supporting program software.

[0029] Preferably, developing a strategy program for the physical control device and downloading it to the physical control device includes: steps of implementing the functions of the energy management system and the fast coordination control system, and steps of implementing the process-side control strategy;

[0030] In the steps of implementing the functions of the energy management system and the fast coordination control system, implementing the functions of the energy management system includes: through the physical control device and supporting program software, implementing the energy management and optimal scheduling functions under steady-state conditions; implementing the functions of the fast coordination control system includes: through the physical control device and supporting program software, implementing the energy balance and system stability functions under transient conditions;

[0031] The steps to implement the process-side control strategy refer to the development of the strategy program of the entity control device on the process side. According to the operation indicators, the control strategy program is formulated and downloaded to the entity control device.

[0032] Preferably, through the real-time digital simulation, electrical characteristic simulation models of new energy power generation equipment, new energy power generation control systems, energy storage chemical batteries, and hydrogen production process equipment are built.

[0033] Through the incentive simulation, process characteristic models of hydrogen production power supply, electrolyzer, separator, pump, cooler, valve, pipeline, and water tank in the hydrogen production process are built.

[0034] Compared with the prior art, the integrated new energy hydrogen production simulation platform established by using the building method of the present invention penetrates the two majors of electricity and process, and can realize the full-process and multi-condition simulation of new energy hydrogen production from electricity to process, from grid connection to off-grid, and from start-up to shutdown, improving the coupling and matching degree of electrical control and process control, and providing a verification platform for the R & D optimization, feasibility study, safety and economic evaluation of new energy hydrogen production technology. Description of the Drawings

[0035] Figure 1 It is a schematic diagram of the system architecture and networking mode of the integrated new energy hydrogen production simulation platform provided by the present invention.

[0036] Figure 2 It is a more specific schematic diagram of the system architecture and networking mode of the integrated new energy hydrogen production simulation platform provided by the embodiment of the present invention.

[0037] Figure 3 It is the partial control strategy of the entity device provided by the application example of the present invention.

[0038] Figure 4 It is the curve of the change trend of the hydrogen production system load with the photovoltaic output during off-grid operation provided by the application example of the present invention.

[0039] Figure 5 It is the flowchart of the building method of the integrated new energy hydrogen production simulation platform provided by the present invention. Detailed Embodiments

[0040] The embodiments of the present invention are described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0041] In order to break the current situation of the division between the electrical and process majors in the new energy hydrogen production simulation platform and overcome the problem of low coupling and matching degree between electrical control and process control, the embodiments of the present invention propose a new energy hydrogen production integrated simulation platform and its construction method. The new energy hydrogen production integrated simulation platform includes: a dispatching optimization layer, a fast coordination layer, a local control layer, a steady-state dispatching optimization network, and a transient coordination control network. The steady-state dispatching optimization network forms a network for the dispatching optimization layer, the fast coordination layer, and the local control layer, and is used for energy management and optimized dispatching under steady-state conditions; the transient coordination control network forms a network for the fast coordination layer and the local control layer, and is used for energy balance and system stability under transient conditions, as shown in Figure 1 the figure. The construction method of the new energy hydrogen production integrated simulation platform includes: electrical characteristic modeling of a real-time digital simulation system, process equipment modeling of an excitation simulation system, and strategy program development of an entity control device.

[0042] Specifically, Embodiment 1 of the present invention provides a new energy hydrogen production integrated simulation platform, including: a dispatching optimization layer, a fast coordination layer, a local control layer, a steady-state dispatching optimization network, and a transient coordination control network.

[0043] The devices in the dispatching optimization layer specifically include: an energy management system for energy management and optimized dispatching under steady-state conditions; it includes: an energy management system entity control device and its supporting program software.

[0044] The devices in the fast coordination layer specifically include: a fast coordination control system for energy balance and system stability control under transient conditions; it includes: a fast coordination control system entity control device and its supporting program software.

[0045] The local control layer includes new energy hydrogen production devices; the new energy hydrogen production devices in the local control layer specifically include: new energy power generation devices, new energy power generation control systems, energy storage inverters, energy storage chemical batteries, hydrogen production process control systems, and hydrogen production process devices.

[0046] Among them, the new energy power generation devices such as but not limited to photovoltaic arrays and photovoltaic inverters, correspondingly, the new energy power generation control system is a photovoltaic power generation control system, and the photovoltaic inverter is connected to the steady-state dispatching optimization network; the new energy power generation devices can also include wind turbines, inverters, and use corresponding control systems; the new energy power generation devices can also be wind-solar devices, which will not be elaborated here. The energy storage chemical battery is connected to the energy storage inverter.

[0047] The hydrogen production process control system includes: array controllers, hydrogen production distributed control systems, hydrogen production power supply control systems, etc. The hydrogen production process devices include: hydrogen production power supplies, electrolyzers, separators, pumps, coolers, valves, pipelines, water tanks, etc.

[0048] The ways to implement the functions of the devices in the in-situ control layer include: real-time digital simulation models, excitation simulation models, physical control devices and supporting program software. That is, at least a part of the new energy power generation equipment, new energy power generation control system, energy storage inverter, energy storage chemical battery, hydrogen production process control system and hydrogen production process equipment is implemented by real-time digital simulation models, at least a part is implemented by excitation simulation models, and the devices other than the simulation models are implemented by physical control devices and supporting program software, where the same device can have both real-time digital simulation models and excitation simulation models at the same time.

[0049] Preferably but not restrictively, the new energy power generation equipment, new energy power generation control system, energy storage chemical battery and hydrogen production process equipment are real-time digital simulation models. That is, through the real-time digital simulation, the electrical characteristic simulation models of the main equipment in the new energy power generation equipment, new energy power generation control system, energy storage chemical battery and hydrogen production process are built.

[0050] It can be understood that the real-time digital simulation system modeling technology, by equivalently transforming the complex power model into an adjoint equivalent calculation network containing current sources and resistive elements, and then connecting with the actual control system through A / D and D / A conversions, realizes digital-analog hybrid simulation and has a high-speed simulation ability at the 10 ns level.

[0051] Preferably but not restrictively, the hydrogen production process equipment is an excitation simulation model. That is, through the excitation simulation, the modeling of the hydrogen production power supply, electrolyzer, separator, pump, cooler, valve, pipeline, water tank in the hydrogen production process is completed.

[0052] It can be understood that the excitation simulation system modeling technology, through the actual operation data, completes the modeling of all the equipment involved in the hydrogen production process, restores the actual process flow and operation parameters, and adopts the same control strategy as the reference system to realize a high-degree reproduction of the actual system operation process.

[0053] It should be noted that the hydrogen production process equipment has both a real-time digital simulation model and an excitation simulation model, that is, within the excitation simulation system and the real-time digital simulation system, a set of hydrogen production power supply and electrolyzer equipment models are built respectively. The reason is that the real-time digital simulation system cannot simulate process characteristics such as pressure, temperature, and liquid level, and the real-time performance of the excitation simulation system cannot meet the actual requirements. Therefore, within the real-time digital simulation system and the excitation simulation system, a set of hydrogen production power supply and electrolyzer equipment models are established respectively, focusing on simulating electrical characteristics and process characteristics respectively, thus connecting the two majors of electricity and technology.

[0054] Preferably but not restrictively, the energy storage inverter and the hydrogen production process control system are implemented by physical control devices and supporting program software.

[0055] The networking methods of the steady-state scheduling optimization network and the transient coordination control network specifically include:

[0056] The scheduling optimization layer, the fast coordination layer, and the in-situ control layer form the steady-state scheduling optimization network through fast communication; that is, the steady-state scheduling optimization network networks the scheduling optimization layer, the fast coordination layer, and the in-situ control layer to complete energy management and optimized scheduling under steady-state conditions;

[0057] The fast coordination layer and the in-situ control layer form the transient coordination control network through fast communication; and the transient coordination control network networks the fast coordination layer and the in-situ control layer to achieve energy balance and system stability under transient conditions;

[0058] The internal devices of the in-situ control layer realize data interaction through fast communication protocols.

[0059] The implementation method of the data interaction of the internal devices of the in-situ control layer specifically includes:

[0060] (1) The new energy power generation equipment and the new energy power generation control system are real-time digital simulation models, and data interaction is realized through the internal wiring of the real-time digital simulation system or fast communication protocols;

[0061] (2) The energy storage inverter and the energy storage chemical battery are respectively an entity control device and supporting program software and real-time digital simulation models, and data interaction is realized through hard wiring or fast communication protocols;

[0062] (3) The hydrogen production process control system and the hydrogen production process equipment are respectively an entity control device and supporting program software and simulation models, and data interaction is realized through fast communication protocols.

[0063] The fast communication protocol needs to meet the rate requirements of electrical control at the millisecond level. Preferably but not limited to, the scheduling optimization layer, the fast coordination layer, and the in-situ control layer form the steady-state scheduling optimization network through the IEC-61850 communication protocol; the fast coordination layer and the in-situ control layer form the transient coordination control network through the GOOSE communication protocol; the internal devices of the in-situ control layer realize data interaction through hard wiring or Modbus TCP.

[0064] Embodiment 2 of the present invention provides a method for building a new energy hydrogen production integrated simulation platform. The building method includes: electrical characteristic modeling of the real-time digital simulation system, process equipment modeling of the excitation simulation system, and development of the strategy program of the entity control device. Specifically, as Figure 5 shown, the building method includes:

[0065] Step 1: Determine the capacity configuration of each part of hydrogen production from new energy, including: new energy power generation capacity configuration, energy storage capacity configuration, and hydrogen production system capacity configuration. For example but not limited to, the capacity configuration includes: photovoltaic capacity configuration, energy storage capacity configuration, and hydrogen production system capacity configuration.

[0066] Step 2: Determine the boundary between the physical control device and the simulation system.

[0067] It can be understood that determining the boundary between the physical control device and the simulation system means determining which devices in the dispatching optimization layer, fast coordination layer, and in-situ control layer are implemented by simulation means and which are implemented by physical control devices.

[0068] For example but not limited to, corresponding to Figure 2 different shapes in. In Figure 2 , the energy management system, fast coordination control system, energy storage inverter, array controller, hydrogen production distributed control system, and hydrogen production power supply system are implemented by physical control devices and supporting program software, and the rest are implemented by simulation models. Further, implementing by simulation models includes implementing by real-time digital simulation mode and excitation simulation mode. The key point of Step 2 is to determine the boundary, and specific simulation modeling is executed in subsequent steps.

[0069] It should be noted that, as one of the prominent substantive features that distinguish the present invention from the prior art, the present invention adopts the co-simulation of a physical control device and a simulation system, which penetrates the two majors of electricity and technology, and solves the technical problem that there is a large gap between the software calculation rate in the pure software simulation state and the actual hardware device, and it is impossible to truly achieve the control effect at the millisecond level.

[0070] Preferably but not restrictively, determine the boundary between the physical control device and the simulation system according to (1) having the ability of flexible migration and configuration; (2) being able to restore the on-site usage mode as much as possible. Further preferably, on the premise that the site is convenient for installation, the control system is implemented by actual devices as much as possible, and for on-site actual equipment (such as pumps, energy storage batteries, photovoltaic inverters) and other equipment with larger volumes, they are implemented by simulation. This can restore the control system structure in actual engineering applications as much as possible.

[0071] Preferably but not restrictively, determine the new energy power generation equipment, new energy power generation control system, energy storage chemical battery, and hydrogen production process equipment as real-time digital simulation models; determine the hydrogen production process equipment as an excitation simulation model; determine the energy storage inverter and hydrogen production process control system as being implemented by physical control devices and supporting program software. It should be noted that in Step 2, the hydrogen production process equipment is determined to be implemented by both real-time digital simulation models and excitation simulation models.

[0072] Step 3: Based on the boundary between the entity control device and the simulation system determined in Step 2 and the capacity configuration in Step 1, develop the entity control device strategy program and download it to the entity control device.

[0073] Preferably but not limited to, Step 3 specifically includes: the steps of implementing the functions of the energy management system and the fast coordination control system, and the steps of implementing the process-side control strategy.

[0074] In the steps of implementing the functions of the energy management system and the fast coordination control system, implementing the functions of the energy management system includes: through the entity control device and the supporting program software, implementing the energy management and optimal scheduling functions under steady-state conditions; implementing the functions of the fast coordination control system includes: through the entity control device and the supporting program software, implementing the energy balance and system stability functions under transient conditions.

[0075] It can be understood that the entity control device and the supporting program software of the energy management system and the fast coordination control system, for example but not limited to, respectively deploy the energy management and optimal scheduling program software under steady-state conditions and the energy balance and system stability control program software under transient conditions on the server. The steps of implementing the process-side control strategy refer to the development of the entity control device strategy program on the process side. According to the operating indicators such as grid-connected and off-grid operation, tie-line power limit, curtailment rate of wind and light, and process temperature, pressure, and liquid level of hydrogen production, formulate a suitable control strategy program and download it to the entity control device.

[0076] Step 4: Implement the devices in the local control layer with real-time digital simulation, excitation simulation, the entity control device and the supporting program software;

[0077] Through the real-time digital simulation, build the electrical characteristic simulation models of the main devices in the new energy power generation equipment, new energy power generation control system, energy storage chemical battery, and hydrogen production process.

[0078] The real-time digital simulation system modeling technology, by equivalently transforming the complex power model into an adjoint equivalent calculation network containing current sources and resistive elements, and then connecting with the actual control system through A / D and D / A conversions, realizes digital-analog hybrid simulation and has a high-speed simulation ability at the 10ns level.

[0079] Through the excitation simulation, build the models of the hydrogen production power supply, electrolyzer, separator, pump, cooler, valve, pipeline, and water tank in the hydrogen production process. The excitation simulation system modeling builds the models of all the equipment involved in the hydrogen production process through actual operation data, restores the actual process flow and operation parameters, and uses the same control strategy as the reference system to achieve a high degree of reproduction of the actual system operation process.

[0080] The reason for building a set of hydrogen production power supply and electrolyzer equipment models in the excitation simulation system and the real-time digital simulation system respectively is that the real-time digital simulation system cannot simulate process characteristics such as pressure, temperature, and liquid level, and the real-time performance of the excitation simulation system cannot meet the actual requirements. Therefore, in the real-time digital simulation system and the excitation simulation system, a set of hydrogen production power supply and electrolyzer equipment models are established respectively, focusing on simulating electrical characteristics and process characteristics.

[0081] Through the entity control device and the supporting program software, the functions corresponding to the energy storage inverter and the hydrogen production process control system are realized.

[0082] Step 5: Network the steady-state dispatch optimization network and the transient coordination control network, and observe whether the simulation operation results of the simulation system under full-process and multi-condition scenarios such as from electrical to process, from grid connection to grid disconnection, and from start-up to shutdown meet the design requirements. If not, the control strategy of the entity device and the simulation model need to be adjusted and verified again.

[0083] The networking methods of the steady-state dispatch optimization network and the transient coordination control network specifically include: the dispatch optimization layer, the fast coordination layer, and the in-situ control layer form the steady-state dispatch optimization network through fast communication; the fast coordination layer and the in-situ control layer form the transient coordination control network through fast communication; the internal devices of the in-situ control layer realize data interaction through fast communication protocols.

[0084] The implementation method of data interaction among the internal devices of the in-situ control layer specifically includes:

[0085] (1) The new energy power generation equipment and the control system realize data interaction through the internal wiring or fast communication protocol of the real-time digital simulation system;

[0086] (2) The energy storage inverter and the energy storage chemical battery realize data interaction through hard wiring or fast communication protocol;

[0087] (3) The hydrogen production process control system and the hydrogen production process simulation system realize data interaction through the fast communication protocol.

[0088] In order to more clearly introduce the technical solution of the present invention, illustrate the prominent substantive features of the present invention and the significant progress brought to the prior art, a specific application example is further given below.

[0089] A certain project includes 8.38 MW of photovoltaic power, 4 MW / 8 MWh of energy storage, 1 set of 1000 Nm 3 alkaline water electrolysis hydrogen production system, and 1 set of 200 Nm 3 proton exchange membrane water electrolysis hydrogen production system. The new energy hydrogen production integrated simulation platform and its building method proposed by the present invention are adopted for this project, as shown in the appendix Figure 2As shown in the figure, the array controller can flexibly split the power instruction according to the operating requirements of the electrolyzer. The entire simulation platform can realize the full-process and multi-condition simulation of new energy hydrogen production from electricity to process, from grid-connected to off-grid, and from startup to shutdown. The steps for establishing the simulation platform are as follows:

[0090] Step 1: Determine the capacity configuration of each part of the new energy hydrogen production. In this project, 8.38 MW of photovoltaic power, 4 MW / 8 MWh of energy storage, 1 set of 1000 Nm 3 alkaline electrolytic water hydrogen production system, and 1 set of 200 Nm 3 proton exchange membrane electrolytic water hydrogen production system are configured;

[0091] Step 2: Determine the boundary between the physical device and the simulation system, as shown in the appendix Figure 2 ;

[0092] Step 3: Purchase and power on the physical device. While achieving the control objectives of steady-state optimization and transient stability of the new energy hydrogen production system, considering the hydrogen production control characteristics on the process side, formulate the corresponding control strategy program and download it to the device. Some control strategies are shown in the appendix Figure 3 ;

[0093] Step 4: In the real-time digital simulation system, complete the system configuration according to the system architecture in the appendix Figure 2 , and establish the electrical characteristic simulation models of photovoltaic inverters, photovoltaic solar panels, energy storage chemical batteries, hydrogen production power supplies, and process equipment for hydrogen production;

[0094] In the excitation simulation system, complete the modeling of hydrogen production power supplies, electrolyzers, separators, pumps, coolers, valves, pipelines, and water tanks in the hydrogen production power supply and hydrogen production process, and build the alkaline electrolytic water and proton exchange membrane electrolytic water process flow charts respectively according to the actual process flow diagram;

[0095] Step 5: Network and debug the simulation system and the physical device according to the system architecture and networking method in the appendix Figure 2 , and observe whether the simulation operation results of the simulation system under full-process and multi-conditions such as from electricity to process, from grid-connected to off-grid, and from startup to shutdown meet the design requirements. If not, it is necessary to adjust the control strategy and simulation model of the physical device and then verify again.

[0096] Using the integrated simulation platform for new energy hydrogen production and its construction method proposed by the present invention, this project realizes the full-process and multi-condition simulation of new energy hydrogen production from electricity to process, from grid-connected to off-grid, and from startup to shutdown. The appendix Figure 4It shows the real-time trend curve of the load of the electrolytic water hydrogen production system varying with the photovoltaic output under the off-grid state. From this curve, it can be seen that as time changes, the photovoltaic output starts to increase, and the electrolytic water hydrogen production system starts to automatically start from the cold state to the full-load state, meeting the purpose of consuming as much new energy as possible. Moreover, the operating parameters on the electrical side and the process side are stable throughout the process, meeting the operating requirements of safety, stability, and economy.

[0097] Through the introduction of the above specific embodiments and application examples, those skilled in the art can clearly know that compared with the prior art, the present invention can realize the full-process and multi-condition simulation of new energy hydrogen production from electricity to process, from grid-connected to off-grid, and from startup to shutdown through this system, providing a verification platform for the R & D optimization, feasibility study, safety and economic evaluation of new energy hydrogen production technology.

[0098] It should be clearly understood that this application describes how to form and use specific examples, but this application is not limited to any details of these examples. On the contrary, based on the teachings of the content disclosed in this application, these principles can be applied to many other embodiments.

[0099] In addition, it should be noted that the above-mentioned drawings are only schematic illustrations of the processes included in the method according to the exemplary embodiments of this application, rather than for limiting purposes. It is easy to understand that the processes shown in the above-mentioned drawings do not indicate or limit the time sequence of these processes. Additionally, it is also easy to understand that these processes can be executed synchronously or asynchronously in multiple modules.

[0100] It should be emphasized that the examples described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the examples described in the specific embodiments. Any other embodiments obtained by those skilled in the art according to the technical solutions of the present invention, whether modified or replaced, as long as they do not depart from the purpose and scope of the present invention, also belong to the protection scope of the present invention.

Claims

1. A new energy hydrogen production integrated simulation platform, characterized in that, including: a dispatching optimization layer, a fast coordination layer, a local control layer, a steady-state dispatching optimization network, and a transient coordination control network; The dispatching optimization layer is used for energy management and optimized dispatching under steady-state conditions; The fast coordination layer is used for energy balance and system stability control under transient conditions; The local control layer includes new energy hydrogen production equipment; The new energy hydrogen production equipment includes: new energy power generation equipment, a new energy power generation control system, an energy storage inverter, an energy storage chemical battery, a hydrogen production process control system, and hydrogen production process equipment; At least a part of the new energy power generation equipment, the new energy power generation control system, the energy storage inverter, the energy storage chemical battery, the hydrogen production process control system, and the hydrogen production process equipment are implemented as real-time digital simulation models, at least a part are implemented as excitation simulation models, and the equipment other than the simulation models are implemented in the form of physical control devices and supporting program software; Among them, the hydrogen production process equipment is simultaneously implemented as a real-time digital simulation model and an excitation simulation model, the real-time digital simulation model is used to simulate the electrical characteristics of the hydrogen production process equipment, and the excitation simulation model is used to simulate the actual process flow and operating parameters of the hydrogen production process equipment; The energy storage inverter and the hydrogen production process control system are implemented with physical control devices and supporting program software; The dispatching optimization layer, the fast coordination layer, and the local control layer are networked to form a steady-state dispatching optimization network; The fast coordination layer and the local control layer are networked to form a transient coordination control network; The devices in the dispatching optimization layer, the fast coordination layer, and the local control layer are physical control devices and their supporting program software or simulation models.

2. The integrated simulation platform for new energy hydrogen production according to claim 1, wherein: The dispatching optimization layer includes an energy management system physical control device and its supporting program software; The fast coordination layer includes a fast coordination control system physical control device and supporting program software.

3. The integrated simulation platform for new energy hydrogen production according to claim 1, wherein: The new energy power generation equipment, the new energy power generation control system, the energy storage chemical battery, and the hydrogen production process equipment are real-time digital simulation models, which are used to simulate the electrical characteristics of the new energy power generation equipment, the new energy power generation control system, the energy storage chemical battery, and the hydrogen production process equipment.

4. The integrated simulation platform for new energy hydrogen production according to claim 1, wherein: The new energy power generation equipment and the new energy power generation control system are real-time digital simulation models, and data interaction is realized through internal wiring or communication protocols in the real-time digital simulation system; The energy storage inverter and the energy storage chemical battery are respectively physical control devices and supporting program software and real-time digital simulation models, and data interaction is realized through hard wiring or communication protocols; The hydrogen production process control system and the hydrogen production process equipment are respectively physical control devices and supporting program software and simulation models, and data interaction is realized through fast communication protocols.

5. The integrated simulation platform for new energy hydrogen production according to claim 1, wherein: The dispatching optimization layer, the fast coordination layer, and the local control layer form a steady-state dispatching optimization network through fast communication protocols; The fast coordination layer and the local control layer form a transient coordination control network through fast communication protocols; Internal devices within the local control layer achieve data interaction through hardwiring or fast communication protocols.

6. A method for building an integrated simulation platform for new energy hydrogen production, which is used to build the integrated simulation platform for new energy hydrogen production as described in any one of claims 1 to 5, characterized in that, The steps include: Determine the capacity configuration of each part of new energy hydrogen production, including: new energy power generation capacity configuration, energy storage capacity configuration, and hydrogen production system capacity configuration; Determine the boundary between the physical control device and the simulation system; Based on the capacity configuration, the boundary between the physical control device and the simulation system, develop the strategy program of the physical control device and download it to the physical control device; determine that the hydrogen production process equipment in the local control layer is implemented by both a real-time digital simulation model and an excitation simulation model; Implement the equipment in the local control layer with real-time digital simulation, excitation simulation, physical control devices, and supporting program software; Network the steady-state scheduling optimization network and the transient coordination control network to obtain an integrated new energy hydrogen production simulation platform for performing simulations.

7. A method for building an integrated new energy hydrogen production simulation platform according to claim 6, characterized in that: Determine the new energy power generation equipment, new energy power generation control system, energy storage chemical battery, and hydrogen production process equipment as real-time digital simulation models; determine the hydrogen production process equipment as an excitation simulation model; determine the energy storage inverter and hydrogen production process control system as being implemented by physical control devices and supporting program software.

8. A method for building an integrated new energy hydrogen production simulation platform according to claim 6, characterized in that: Developing the strategy program of the physical control device and downloading it to the physical control device includes: steps to implement the functions of the energy management system and the fast coordination control system, and steps to implement the process-side control strategy; In the steps to implement the functions of the energy management system and the fast coordination control system, implementing the functions of the energy management system includes: through the physical control device and supporting program software, implementing the energy management and optimization scheduling functions under steady-state conditions; implementing the functions of the fast coordination control system includes: through the physical control device and supporting program software, implementing the energy balance and system stability functions under transient conditions; The step of implementing the process-side control strategy refers to the development of the strategy program of the physical control device on the process side, formulating the control strategy program according to the operation indicators, and downloading it to the physical control device.

9. A method for building an integrated new energy hydrogen production simulation platform according to claim 6, characterized in that: Through the real-time digital simulation, build the electrical characteristic simulation models of the new energy power generation equipment, new energy power generation control system, energy storage chemical battery, and hydrogen production process equipment; Through the excitation simulation, build the process characteristic models of the hydrogen production power supply, electrolyzer, separator, pump, cooler, valve, pipeline, and water tank in the hydrogen production process.

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