A control method and device of an electrolytic hydrogen production system

Abstract

The present application relates to the field of off-grid renewable energy hydrogen production, and discloses a control method and device for an electrolytic hydrogen production system, the electrolytic hydrogen production system comprising a renewable energy power generation unit, an energy storage unit and a hydrogen production unit, the method comprising: obtaining the power generation amount of the renewable energy power generation unit and the state of charge of the energy storage unit; generating the energy supply amount of the electrolytic hydrogen production system based on the power generation amount and the state of charge; determining the working mode of the electrolytic hydrogen production system that matches the energy supply amount, wherein the working mode represents the operating state of the units in the electrolytic hydrogen production system, and is one of an off-grid hydrogen production mode, an off-grid charging mode, an off-grid waiting mode and a non-off-grid waiting mode; and generating energy scheduling information that matches the working mode for the working mode, wherein the energy scheduling information represents the scheduling of the energy supply amount. The present application can improve the utilization rate of renewable energy while reducing the system maintenance complexity.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of off-grid renewable energy hydrogen production, in particular to a control method and device of an electrolytic hydrogen production system. BACKGROUND

[0002] Off-grid renewable energy hydrogen production technology can ensure that the energy source for producing hydrogen is completely renewable and environmentally friendly. Off-grid renewable energy hydrogen production systems usually rely on intermittent energy sources such as solar and wind energy. These intermittent energy sources are highly dependent on weather conditions, affecting the continuous production capacity of hydrogen.

[0003] In related technologies, the hydrogen production rate of the off-grid renewable energy hydrogen production system is improved by increasing the capacity of the energy storage unit in the system or coupling multiple renewable energy sources, but this significantly increases the investment cost and the complexity of subsequent maintenance and management.

[0004] Therefore, there is a need for an electrolytic hydrogen production system control method that can improve the utilization rate of renewable energy while reducing system maintenance complexity. SUMMARY

[0005] Therefore, the present application provides an electrolytic hydrogen production system control method to improve the utilization rate of renewable energy without increasing system maintenance complexity.

[0006] In a first aspect, the present application provides an electrolytic hydrogen production system control method, the electrolytic hydrogen production system comprising a renewable energy power generation unit, an energy storage unit and a hydrogen production unit, the method comprising: obtaining the power generation amount of the renewable energy power generation unit and the state of charge of the energy storage unit; generating an energy supply amount of the electrolytic hydrogen production system based on the power generation amount and the state of charge; determining a working mode of the electrolytic hydrogen production system matched with the energy supply amount, wherein the working mode represents the operating state of the units in the electrolytic hydrogen production system, and is one of an off-grid hydrogen production mode, an off-grid charging mode, an off-grid waiting mode and a non-off-grid waiting mode; generating energy scheduling information matched with the working mode for the working mode, wherein the energy scheduling information represents the scheduling of the energy supply amount.

[0007] In this embodiment, by obtaining the energy supply amount of the electrolytic hydrogen production system, determining the working mode of the electrolytic hydrogen production system, and generating energy scheduling information matched with the working mode, the power generation amount of the renewable energy power generation unit can be reasonably used, and the hydrogen production amount of the electrolytic hydrogen production system can be improved.

[0008] In an optional embodiment, based on the power generation and the state of charge, the energy supply amount of the electrolytic hydrogen production system is generated, including: in the case that the power generation is greater than or equal to the first threshold value and the state of charge is greater than the over-discharge threshold value, the energy supply amount is the first supply amount; in the case that the power generation is greater than or equal to the first threshold value and the state of charge is less than or equal to the over-discharge threshold value, the energy supply amount is the second supply amount; in the case that the power generation is less than the first threshold value and the state of charge is greater than the over-discharge threshold value, the energy supply amount is the third supply amount; in the case that the power generation is less than the first threshold value and the state of charge is less than or equal to the over-discharge threshold value, the energy supply amount is the fourth supply amount.

[0009] In the embodiment, the energy supply amount of the electrolytic hydrogen production system is accurately divided according to the power generation and the state of charge, which facilitates the subsequent determination of the working mode of the electrolytic hydrogen production system, improves the energy utilization rate, and optimizes the energy storage management.

[0010] In an optional embodiment, the working mode of the electrolytic hydrogen production system matched with the energy supply amount is determined, including: in the case that the energy supply amount is the first supply amount, the working mode of the electrolytic hydrogen production system is the off-grid hydrogen production mode, and the hydrogen production unit starts to produce hydrogen; in the case that the energy supply amount is the second supply amount, the working mode of the electrolytic hydrogen production system is the off-grid charging mode, the hydrogen production unit stops producing hydrogen, and the energy storage unit charges; in the case that the energy supply amount is the third supply amount, the working mode of the electrolytic hydrogen production system is the off-grid waiting mode, the hydrogen production unit stops producing hydrogen, and the energy storage unit discharges; in the case that the energy supply amount is the fourth supply amount, the working mode of the electrolytic hydrogen production system is the non-off-grid waiting mode, the hydrogen production unit stops producing hydrogen, and the electrolytic hydrogen production system is connected to the power grid.

[0011] In the embodiment, the running state of the units in the electrolytic hydrogen production system is adjusted under different energy supply amounts, which can improve the energy utilization rate, the flexibility and the environmental adaptability of the electrolytic hydrogen production system.

[0012] In an optional embodiment, in the case that the working mode of the electrolytic hydrogen production system is the off-grid hydrogen production mode, the energy scheduling information matched with the working mode is generated for the working mode, including: the basic power consumption of the electrolytic hydrogen production system and the hydrogen production power consumption of the hydrogen production unit are obtained to determine the first energy consumption of the electrolytic hydrogen production system, wherein the basic power consumption represents the power consumption of the power-consuming units in the electrolytic hydrogen production system, the hydrogen production power consumption represents the power consumption of the hydrogen production unit for hydrogen production, and the first energy consumption includes the basic power consumption and the hydrogen production power consumption; the power generation supplies the first energy consumption demand of the electrolytic hydrogen production system in the off-grid hydrogen production mode.

[0013] In the embodiment, the power generation provided by the renewable energy provides the energy consumption required by the electrolytic hydrogen production system in the off-grid hydrogen production mode, which can effectively utilize the renewable energy in the environment and help promote the widespread application of clean energy.

[0014] In an optional implementation, the obtaining of the hydrogen production power consumption includes: obtaining hydrogen production power of the hydrogen production unit, where the hydrogen production power is matched with the power generation power of the renewable energy power generation unit; and determining the hydrogen production power consumption based on the hydrogen production power.

[0015] In the implementation, the hydrogen production power of the hydrogen production unit is matched with the power generation power of the renewable energy power generation unit, which can reduce waste of renewable energy and improve the hydrogen production flexibility of the electrolytic hydrogen production system.

[0016] In an optional implementation, in a case where the working mode of the electrolytic hydrogen production system is the off-grid charging mode, the generating, for the working mode, of the energy scheduling information matched with the working mode includes: obtaining a basic power consumption of the electrolytic hydrogen production system and a charging amount of the energy storage unit to determine a second energy consumption of the electrolytic hydrogen production system, where the basic power consumption represents power consumption of an internal power consumption unit of the electrolytic hydrogen production system, the charging amount of the energy storage unit represents required power amount for the state of charge of the energy storage unit to be above the over-discharge threshold, and the second energy consumption includes the basic power consumption and the charging amount of the energy storage unit; and the power generation amount supplies the second energy consumption demand of the electrolytic hydrogen production system in the off-grid charging mode.

[0017] In the implementation, the power generation amount of the renewable energy power generation unit maintains the basic power consumption of the system and charges the energy storage unit, which can ensure the stability of the electrolytic hydrogen production system.

[0018] In an optional implementation, in a case where the working mode of the electrolytic hydrogen production system is the off-grid waiting mode, the generating, for the working mode, of the energy scheduling information matched with the working mode includes: obtaining a basic power consumption of the electrolytic hydrogen production system to determine a third energy consumption of the electrolytic hydrogen production system, where the basic power consumption represents power consumption of an internal power consumption unit of the electrolytic hydrogen production system; and a storage amount of the energy storage unit supplies the third energy consumption demand of the electrolytic hydrogen production system in the off-grid waiting mode.

[0019] In the implementation, the storage amount of the energy storage unit is used to maintain the basic power consumption of the system, which can reasonably utilize renewable energy, facilitate subsequent switching of the working mode, and reduce unnecessary waste of resources.

[0020] In an optional implementation, in a case where the working mode of the electrolytic hydrogen production system is the non-off-grid waiting mode, the generating, for the working mode, of the energy scheduling information matched with the working mode includes: obtaining a basic power consumption of the electrolytic hydrogen production system to determine a fourth energy consumption of the electrolytic hydrogen production system, where the basic power consumption represents power consumption of an internal power consumption unit of the electrolytic hydrogen production system; and the power grid supplies the fourth energy consumption demand required by the electrolytic hydrogen production system in the non-off-grid waiting mode.

[0021] In the embodiment, the base power consumption of the power grid maintenance system is used to maintain each renewable energy power generation unit in the system in a standby state, and when the power generation capacity provided by the subsequent renewable energy power generation unit is sufficient, the working mode can be switched to improve the utilization rate of renewable energy.

[0022] In an alternative embodiment, the power consumption unit in the electrolytic hydrogen production system includes at least one of the operation and maintenance equipment of the renewable energy power generation unit, the first safety equipment of the energy storage unit, and the second safety equipment of the hydrogen production unit.

[0023] In the embodiment, the power consumption unit includes at least one of the operation and maintenance equipment of the renewable energy power generation unit, the first safety equipment of the energy storage unit, and the second safety equipment of the hydrogen production unit. The stability and safety of the electrolytic hydrogen production system can be maintained.

[0024] In a second aspect, the present application provides an electrolytic hydrogen production system control device, the device comprising: an acquisition module for acquiring the power generation capacity of a renewable energy power generation unit and the state of charge of an energy storage unit; a generation module for generating the energy supply amount of an electrolytic hydrogen production system based on the power generation capacity and the state of charge; a mode determination module for determining the working mode of the electrolytic hydrogen production system matched with the energy supply amount, wherein the working mode represents the running state of the unit in the electrolytic hydrogen production system, and is one of the off-grid hydrogen production mode, the off-grid charging mode, the off-grid waiting mode, and the non-off-grid waiting mode; and an information generation module for generating energy scheduling information matched with the working mode for the working mode, wherein the energy scheduling information represents the scheduling of the energy supply amount. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 is a flowchart of a control method of an electrolytic hydrogen production system according to an embodiment of the present application;

[0027] Figure 2 is a flowchart of another control method of an electrolytic hydrogen production system according to an embodiment of the present application;

[0028] Figure 3 is a flowchart of another control method of an electrolytic hydrogen production system according to an embodiment of the present application;

[0029] Figure 4is a structural block diagram of a control device of an electrolytic hydrogen production system according to an embodiment of the present application.

[0030] Figure 5 is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] Renewable energy hydrogen production is considered as one of the key ways to achieve sustainable development of hydrogen energy. In particular, through off-grid renewable energy hydrogen production technology, hydrogen can be produced to ensure that the energy source for producing hydrogen is completely renewable and environmentally friendly. It meets the global trend of low-carbon and environmentally friendly energy demand.

[0033] However, renewable energy electrolytic hydrogen production systems usually rely on intermittent energy sources such as solar and wind energy. These energy sources are highly dependent on weather conditions, such as the intensity of sunlight and the speed of wind, which are significantly affected by weather and seasons. This dependence on intermittent energy sources leads to intermittent energy supply of the system, thereby affecting the continuous production capacity of hydrogen. In rainy days or windless conditions, the energy output of the renewable energy system can be much lower than the energy required for the operation of the hydrogen production system, thereby affecting the stable production of hydrogen.

[0034] In related technologies, the capacity of energy storage units in the system or the coupling of multiple renewable energy sources is usually used to alleviate the dependence of the electrolytic hydrogen production system on intermittent energy. Among them, increasing the capacity of energy storage units usually uses batteries or other forms of energy storage systems to store excess energy when energy supply is sufficient, so as to use the stored energy to maintain hydrogen production when energy supply is insufficient. Coupling multiple renewable energy sources usually uses solar and wind energy at the same time to reduce dependence on a single energy source and improve the overall energy stability of the system. When the output of one energy source decreases, it is supplemented by another energy source, thereby more effectively balancing energy supply. These methods can improve the energy supply stability of the electrolytic hydrogen production system to some extent, but increasing the energy storage unit and coupling multiple energy systems require higher initial investment and more complex maintenance and management. It may also be limited by the availability of technology and funds in the area.

[0035] Therefore, there is a need for an electrolytic hydrogen production system control method that can improve the utilization rate of renewable energy while reducing the complexity of system maintenance.

[0036] The electrolytic hydrogen production system comprises a renewable energy power generation unit, a hydrogen production unit, and an energy storage unit, the renewable energy power generation unit and the energy storage unit are connected to an AC bus 1#, the hydrogen production unit is connected to an AC bus 2#. The AC bus 1# and the AC bus 2# are connected through a switch. In the case that the energy provided by the renewable energy power generation unit and the energy storage unit is insufficient, the AC bus 1# can be connected to a power grid to maintain the energy supply in the system.

[0037] The equipment included in the renewable energy power generation unit is related to the type of renewable energy. If wind energy is used for power generation, the renewable energy power generation unit comprises a wind turbine and a matching converter, etc. If solar energy is used for power generation, the renewable energy power generation unit comprises a photovoltaic panel and a matching converter, etc. The hydrogen production unit mainly comprises an electrolytic cell, a gas-liquid separation frame, a purification device, a circulating water cooling device, and auxiliary equipment such as a hydrogen compressor. The energy storage unit mainly comprises an energy storage battery, an energy storage converter, and auxiliary equipment such as an air conditioner. In order to maintain the normal operation of the electrolytic hydrogen production system, the electrolytic hydrogen production system usually further comprises a station service unit, which is connected to the AC bus 2# and comprises an air conditioner, an electric auxiliary heater, and other station personnel life electric appliances.

[0038] According to the embodiment of the present application, a control method for an electrolytic hydrogen production system is provided. It should be noted that the steps shown in the flowchart can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0039] In the present embodiment, a control method for an electrolytic hydrogen production system is provided, Figure 1 is a flowchart of the control method for the electrolytic hydrogen production system according to the embodiment of the present application, as Figure 1 shown, the flow includes the following steps:

[0040] In step S101, the power generation amount of the renewable energy power generation unit and the state of charge of the energy storage unit are obtained.

[0041] The method for obtaining the power generation amount of the renewable energy power generation unit is not limited, and the instantaneous power output of the renewable energy power generation unit can be obtained by detecting equipment to collect data, and then the power generation amount of the renewable energy power generation unit is determined. Based on the past renewable energy power generation data, a renewable energy prediction model can be generated using renewable energy evaluation software to obtain the power generation amount of the renewable energy power generation unit.

[0042] In practical applications, when the renewable energy power generation unit uses wind energy to generate electricity, a wind speed meter, a power meter and other detection devices can be installed on the wind turbine of the renewable energy power generation unit to collect data in real time, and a data acquisition system can be used to collect and monitor the performance data of the wind turbine, calculate the real-time power output of the wind turbine, and further obtain the power generation capacity of the renewable energy power generation unit.

[0043] The state of charge of the energy storage unit represents the ratio of the current power of the energy storage unit to the power of the fully charged state, usually expressed in percentage. In practical applications, the state of charge usually includes a full charge state, a normal working state, a low power state and a completely discharged state. Among them, the full charge state represents that the state of charge of the energy storage unit is close to or equal to 100%, the normal working state represents a state of charge maintained by the energy storage unit during use, usually 20% to 80%, the low power state represents that the state of charge of the energy storage unit is lower than a certain threshold, such as lower than 20%, and the completely discharged state represents that the energy storage unit is almost or completely depleted, and the state of charge is close to 0%.

[0044] In step S102, the energy supply amount of the electrolytic hydrogen production system is generated based on the power generation capacity and the state of charge.

[0045] The power generation capacity and the state of charge are energy sources of the electrolytic hydrogen production system, and the energy supply amount of the electrolytic hydrogen production system can be determined by calculating the sum of the power generation capacity and the state of charge. The energy supply amount can be a specific value, and the working mode of the electrolytic hydrogen production system is determined by judging the size of the energy supply amount. Alternatively, thresholds of the power generation capacity and the state of charge can be set respectively, and four situations of the energy supply amount of the electrolytic hydrogen production system are obtained by judging whether the power generation capacity and the state of charge reach the thresholds.

[0046] In practical applications, when the renewable energy power generation unit uses wind energy to generate electricity, the energy supply amount is larger when the power generation capacity and the state of charge are higher.

[0047] In step S103, the working mode of the electrolytic hydrogen production system matched with the energy supply amount is determined, wherein the working mode represents the running state of the unit in the electrolytic hydrogen production system, and is one of the off-grid hydrogen production mode, the off-grid charging mode, the off-grid waiting mode and the non-off-grid waiting mode.

[0048] The working mode of the electrolytic hydrogen production system needs to be matched with the energy supply amount. In practical applications, different energy supply amount ranges can be set, the energy supply amount is judged to be in which range, and then the appropriate working mode of the electrolytic hydrogen production system is selected.

[0049] In the case of sufficient energy supply, the off-grid hydrogen production mode is selected, the hydrogen production unit starts to produce hydrogen, and the renewable energy power generation unit and the energy storage unit provide the energy required for the hydrogen production unit to produce hydrogen. In the case of insufficient energy supply, the off-grid charging mode or the off-grid waiting mode is selected. The off-grid charging mode and the off-grid waiting mode also need to be selected according to the state of charge of the energy storage unit. In one practical application, the power generation capacity is sufficient, the state of charge is less than 20%, the off-grid charging mode is selected, the energy storage unit absorbs the power generation capacity to charge, and the state of charge is increased to more than 20%. In another practical application, the power generation capacity is insufficient, the state of charge is more than 20%, the off-grid waiting mode is selected, and the energy stored in the energy storage unit is used to maintain the operation of the auxiliary equipment and safety equipment of the electrolytic hydrogen production system. In the case of serious insufficient energy supply, the non-off-grid waiting mode is selected, and an additional energy providing device is connected to maintain the safety of the electrolytic hydrogen production system, wherein the energy providing device can be a power grid.

[0050] In step S104, energy scheduling information matching the working mode is generated for the working mode, wherein the energy scheduling information represents the scheduling of the energy supply.

[0051] When the working mode of the electrolytic hydrogen production system is the off-grid hydrogen production mode, the power generation capacity is mainly used to provide the energy required for the hydrogen production unit to produce hydrogen, and in the case of unstable power generation capacity, the energy stored in the energy storage unit can be used to provide stable energy supply for the hydrogen production unit. In one practical application, the renewable energy power generation unit uses wind energy to generate power, and under the premise of sufficient energy supply, the wind speed decreases, the power generation capacity of the renewable energy power generation unit also decreases, the energy stored in the energy storage unit can be used to maintain the energy required for the hydrogen production unit to produce hydrogen, and if the wind speed increases later, the power generation capacity of the renewable energy power generation unit increases, and after providing the energy required for the hydrogen production unit to produce hydrogen, the remaining power generation capacity can be transmitted to the energy storage unit for storage.

[0052] When the working mode of the electrolytic hydrogen production system is the off-grid charging mode, the hydrogen production unit stops producing hydrogen, the power generation capacity is mainly used to provide energy for the energy storage unit and the safety equipment in the electrolytic hydrogen production system, so that the state of charge of the energy storage unit reaches a certain threshold, so that the energy storage unit stores enough energy and maintains the safety of the electrolytic hydrogen production system.

[0053] When the working mode of the electrolytic hydrogen production system is the off-grid waiting mode, the power generation capacity of the renewable energy power generation unit is insufficient, and the energy stored in the energy storage unit can be used to maintain the energy consumption of the system.

[0054] When the working mode of the electrolytic hydrogen production system is the non-off-grid waiting mode, the power grid or other devices capable of providing energy can be connected to provide the energy required for the safety of the electrolytic hydrogen production system.

[0055] The control method of the electrolytic hydrogen production system provided in the embodiment can reasonably use the power generation amount of the renewable energy power generation unit, and improve the hydrogen production amount of the electrolytic hydrogen production system.

[0056] A control method of an electrolytic hydrogen production system is provided in the embodiment, Figure 2 The flowchart of the control method of the electrolytic hydrogen production system according to the embodiment of the present application is shown in Figure 2 The flowchart includes the following steps:

[0057] In step S201, the power generation amount of the renewable energy power generation unit and the state of charge of the energy storage unit are obtained.

[0058] For details, refer to step S101 of the embodiment shown in Figure 1 The details are not described here.

[0059] In step S202, the energy supply amount of the electrolytic hydrogen production system is generated based on the power generation amount and the state of charge.

[0060] Specifically, the above step S202 includes:

[0061] a11: In the case where the power generation amount is greater than or equal to the first threshold value and the state of charge is greater than the over-discharge threshold value, the energy supply amount is the first supply amount.

[0062] a21: In the case where the power generation amount is greater than or equal to the first threshold value and the state of charge is less than or equal to the over-discharge threshold value, the energy supply amount is the second supply amount.

[0063] a31: In the case where the power generation amount is less than the first threshold value and the state of charge is greater than the over-discharge threshold value, the energy supply amount is the third supply amount.

[0064] a41: In the case where the power generation amount is less than the first threshold value and the state of charge is less than or equal to the over-discharge threshold value, the energy supply amount is the fourth supply amount.

[0065] The first threshold value and the over-discharge threshold value are not limited in setting, and can be set according to the equipment included in the electrolytic hydrogen production system. In the case where the renewable energy power generation unit uses wind power generation, the more wind turbines are set in the renewable energy power generation unit, the higher the first threshold value is set. In the case where the renewable energy power generation unit uses solar power generation, the more photovoltaic panels are set in the renewable energy power generation unit, the higher the first threshold value is set. In an actual application, the electrolytic cell included in the hydrogen production unit has a single specification of 1000 Nm 3 / h, and the minimum operating load of the hydrogen production unit is 1.5 MW. Therefore, the first threshold value can be set to 1.5 MW.

[0066] In one practical application, the over-discharge threshold of the energy storage unit is 15%.

[0067] According to the accurate division of the energy supply amount of the electrolytic hydrogen production system according to the power generation amount and the state of charge, the subsequent determination of the working mode of the electrolytic hydrogen production system can be facilitated, the energy utilization rate can be improved, and the energy storage management can be optimized.

[0068] In step S203, a working mode of the electrolytic hydrogen production system matched with the energy supply amount is determined, wherein the working mode represents a running state of a unit in the electrolytic hydrogen production system, and is one of an off-grid hydrogen production mode, an off-grid charging mode, an off-grid waiting mode, and a non-off-grid waiting mode.

[0069] Specifically, the step S203 includes:

[0070] a12: In the case that the energy supply amount is a first supply amount, the working mode of the electrolytic hydrogen production system is the off-grid hydrogen production mode, and the hydrogen production unit starts to produce hydrogen.

[0071] In the case that the energy supply amount is a first supply amount, the working mode of the electrolytic hydrogen production system is the off-grid hydrogen production mode, and the hydrogen production unit starts to produce hydrogen.

[0072] a22: In the case that the energy supply amount is a second supply amount, the working mode of the electrolytic hydrogen production system is the off-grid charging mode, the hydrogen production unit stops producing hydrogen, and the energy storage unit is charged.

[0073] In the case that the energy supply amount is a second supply amount, the working mode of the electrolytic hydrogen production system is the off-grid charging mode, the hydrogen production unit stops producing hydrogen, and the energy storage unit is charged.

[0074] a32: In the case that the energy supply amount is a third supply amount, the working mode of the electrolytic hydrogen production system is the off-grid waiting mode, the hydrogen production unit stops producing hydrogen, and the energy storage unit is discharged.

[0075] In the off-grid standby mode, the hydrogen production unit stops hydrogen production, and only monitoring devices for maintaining the standby new energy equipment and the hydrogen production unit are retained. When the renewable energy power generation unit generates power, both the generated power and the energy stored in the energy storage unit are used as the energy source of the electrolytic hydrogen production system. When the renewable energy power generation unit does not generate power, only the energy stored in the energy storage unit is used as the energy source of the electrolytic hydrogen production system.

[0076] a42: In the case of the fourth energy supply, the working mode of the electrolytic hydrogen production system is the non-off-grid standby mode, the hydrogen production unit stops hydrogen production, and the electrolytic hydrogen production system is connected to the power grid.

[0077] In the non-off-grid standby mode, the hydrogen production unit stops hydrogen production, and only monitoring devices for maintaining the safety of the hydrogen production unit are retained. The energy storage unit is shut down and does not charge or discharge. The renewable energy power generation unit is in a hot standby state, which indicates that the renewable energy power generation unit has been started and is in a standby state, and can be put into operation at any time to meet the power demand. In an actual application, the renewable energy power generation unit uses wind energy to generate power, and needs to maintain the oil temperature of the fan gearbox to meet the starting oil temperature, which consumes the electric energy of the fan gearbox oil temperature heater and the line loss. The electrolytic hydrogen production system is connected to the power grid, and the electric energy consumed in the system is provided by the power grid.

[0078] It is determined that the operation state of the unit in the electrolytic hydrogen production system is adjusted under different energy supply, which can improve the energy utilization, flexibility and environmental adaptability of the electrolytic hydrogen production system.

[0079] In step S204, energy scheduling information matched with the working mode is generated for the working mode, wherein the energy scheduling information represents the scheduling of the energy supply.

[0080] For details, please refer to Figure 1 The step S104 of the embodiment shown will not be described here.

[0081] The control method of the electrolytic hydrogen production system provided in the embodiment can select the working mode according to the generated power of the renewable energy power generation unit and the state of charge of the energy storage unit, can adjust the working mode in real time, and can maximize the use of renewable energy and reduce energy waste.

[0082] In the embodiment, a control method of an electrolytic hydrogen production system is provided, Figure 3 is a flowchart of the control method of the electrolytic hydrogen production system according to the embodiment of the present application, as Figure 3 shown, the flowchart includes the following steps:

[0083] Step S301, obtain the power generation of the renewable energy power generation unit and the state of charge of the energy storage unit.

[0084] For details, please refer to Figure 1 Step S101 of the embodiment shown will not be repeated here.

[0085] Step S302, based on the power generation and the state of charge, generate the energy supply of the electrolytic hydrogen production system.

[0086] For details, please refer to Figure 1 Step S102 of the embodiment shown will not be repeated here.

[0087] Step S303, determine the working mode of the electrolytic hydrogen production system matched with the energy supply, wherein the working mode represents the running state of the unit in the electrolytic hydrogen production system, and is one of off-grid hydrogen production mode, off-grid charging mode, off-grid waiting mode and non-off-grid waiting mode.

[0088] For details, please refer to Figure 1 Step S103 of the embodiment shown will not be repeated here.

[0089] Step S304, for the working mode, generate energy scheduling information matched with the working mode, wherein the energy scheduling information represents the scheduling of the energy supply.

[0090] Specifically, the above step S304 includes:

[0091] b1: in the case that the working mode of the electrolytic hydrogen production system is the off-grid hydrogen production mode, for the working mode, generating energy scheduling information matched with the working mode includes: obtaining the basic power consumption of the electrolytic hydrogen production system and the hydrogen production power consumption of the hydrogen production unit, to determine the first energy consumption of the electrolytic hydrogen production system, wherein the basic power consumption represents the power consumption of the electrical unit in the electrolytic hydrogen production system, the hydrogen production power consumption represents the power consumption of the hydrogen production unit for hydrogen production, and the first energy consumption includes the basic power consumption and the hydrogen production power consumption; the power generation supplies the first energy consumption demand of the electrolytic hydrogen production system in the off-grid hydrogen production mode.

[0092] Wherein, the basic power consumption of the electrolytic hydrogen production system can be set by the staff according to the actual situation. In one practical application, the renewable energy power generation unit uses wind power generation, and the basic power consumption of the electrolytic hydrogen production system includes the power consumption of the wind turbine gearbox oil heater and the line loss in the renewable energy power generation unit, and the power consumption of auxiliary equipment such as air conditioner, fire fighting, etc. in the energy storage unit. In the case that the electrolytic hydrogen production system includes a plant power unit, the power consumption of the plant power unit is also part of the basic power consumption.

[0093] The hydrogen production power consumption of the hydrogen production unit is determined according to the power of the electrolytic tank in the hydrogen production unit.

[0094] The power generated by the renewable energy source can provide the energy consumption required by the electrolytic hydrogen production system in the off-grid hydrogen production mode, which can effectively utilize the renewable energy in the environment and help promote the widespread application of clean energy.

[0095] In some optional embodiments, the obtaining of the hydrogen production power consumption includes: obtaining hydrogen production power of the hydrogen production unit, wherein the hydrogen production power matches the power generation power of the renewable energy power generation unit; and determining the hydrogen production power consumption based on the hydrogen production power.

[0096] The power generation power of the renewable energy power generation unit can be measured by setting a power meter on the renewable energy power generation unit. The power generation of commonly used renewable energy sources such as wind energy and solar energy is affected by weather and time, so matching the hydrogen production power and the power generation power can maximize the utilization of energy.

[0097] Matching the hydrogen production power of the hydrogen production unit and the power generation power of the renewable energy power generation unit can reduce the waste of renewable energy and improve the hydrogen production flexibility of the electrolytic hydrogen production system.

[0098] b2: In the case that the working mode of the electrolytic hydrogen production system is the off-grid charging mode, the generating of the energy scheduling information matched with the working mode for the working mode includes: obtaining a basic power consumption of the electrolytic hydrogen production system and a charging amount of the energy storage unit to determine a second energy consumption of the electrolytic hydrogen production system, wherein the basic power consumption represents the power consumption of the internal power consumption unit of the electrolytic hydrogen production system, the charging amount of the energy storage unit represents the required power when the state of charge of the energy storage unit reaches above the over-discharge threshold, and the second energy consumption includes the basic power consumption and the charging amount of the energy storage unit; and the power generation power supplies the second energy consumption demand of the electrolytic hydrogen production system in the off-grid charging mode.

[0099] The basic power consumption of the electrolytic hydrogen production system can be set by the staff according to the actual situation.

[0100] The charging amount of the energy storage unit is determined according to the state of charge of the energy storage unit and the specification of the energy storage unit. In an actual application, a running retention value of the state of charge of the energy storage unit is set, and the charging amount of the energy storage unit is the power required when the state of charge of the energy storage unit reaches the running retention value.

[0101] The power generation power of the renewable energy power generation unit maintains the basic power consumption of the system and charges the energy storage unit, which can ensure the stability of the electrolytic hydrogen production system.

[0102] b3: In the case that the working mode of the electrolytic hydrogen production system is the off-grid waiting mode, the energy scheduling information matched with the working mode is generated for the working mode, including: obtaining the basic power consumption of the electrolytic hydrogen production system to determine the third energy consumption of the electrolytic hydrogen production system, wherein the basic power consumption represents the power consumption of the power-consuming unit in the electrolytic hydrogen production system; and the power storage capacity of the energy storage unit supplies the third energy consumption demand of the electrolytic hydrogen production system in the off-grid waiting mode.

[0103] Wherein, the obtaining method of the basic power consumption of the electrolytic hydrogen production system is the same as that in other modes. In an actual application, the third energy consumption is the basic power consumption. The energy storage unit is the energy source of the electrolytic hydrogen production system. In an actual application, the renewable energy power generation unit still generates electricity, and the power generation capacity of the renewable energy power generation unit and the power storage capacity of the energy storage unit can be used to jointly provide the third energy consumption.

[0104] Using the power storage capacity of the energy storage unit to maintain the basic power consumption of the system can reasonably utilize renewable energy, facilitate subsequent switching of the working mode, and reduce unnecessary waste of resources.

[0105] b4: In the case that the working mode of the electrolytic hydrogen production system is the non-off-grid waiting mode, the energy scheduling information matched with the working mode is generated for the working mode, including: obtaining the basic power consumption of the electrolytic hydrogen production system to determine the fourth energy consumption of the electrolytic hydrogen production system, wherein the basic power consumption represents the power consumption of the power-consuming unit in the electrolytic hydrogen production system; and the power grid supplies the fourth energy consumption demand of the electrolytic hydrogen production system in the non-off-grid waiting mode.

[0106] Wherein, the obtaining method of the basic power consumption of the electrolytic hydrogen production system is the same as that in other modes. The power grid is connected to the AC bus 1# to provide the fourth energy consumption required by the electrolytic hydrogen production system.

[0107] Using the power grid to maintain the basic power consumption of the system enables each renewable energy power generation unit in the system to be in standby state, and the working mode can be switched when the power generation capacity provided by the renewable energy power generation unit is sufficient, thereby improving the utilization rate of renewable energy.

[0108] In some optional embodiments, the power-consuming unit in the electrolytic hydrogen production system includes at least one of the operation and maintenance equipment of the renewable energy power generation unit, the first safety equipment of the energy storage unit, and the second safety equipment of the hydrogen production unit.

[0109] Wherein, when the renewable energy power generation unit uses wind energy to generate electricity, the operation and maintenance equipment includes a fan gear box oil heater and safety monitoring equipment, etc. The first safety equipment includes a cooling device, an energy monitoring device, etc. The second safety equipment includes a temperature control device, etc.

[0110] The use electric unit includes at least one of operation and maintenance equipment of a renewable energy power generation unit, first safety equipment of an energy storage unit and second safety equipment of a hydrogen production unit. The stability and safety of the electrolytic hydrogen production system can be maintained.

[0111] The control method of the electrolytic hydrogen production system provided in the embodiment adjusts the working mode of the electrolytic hydrogen production system according to the power generation amount and the state of charge, and performs energy scheduling on the power generation amount and the state of charge. The utilization rate of renewable energy can be improved.

[0112] As one or more specific application embodiments of the embodiments of the application, the optimal implementation scheme or the scheme that the inventor wants to embody most is described in combination with a specific application scenario.

[0113] In the embodiment, a control device of an electrolytic hydrogen production system is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware is also possible and is contemplated.

[0114] The embodiment provides a control device of an electrolytic hydrogen production system, as shown in the figure, comprising: Figure 4

[0115] The acquisition module 401 is configured to acquire a power generation amount of a renewable energy power generation unit and a state of charge of an energy storage unit.

[0116] The generation module 402 is configured to generate an energy supply amount of the electrolytic hydrogen production system based on the power generation amount and the state of charge.

[0117] The mode determination module 403 is configured to determine a working mode of the electrolytic hydrogen production system matched with the energy supply amount, wherein the working mode represents a running state of a unit in the electrolytic hydrogen production system, and is one of an off-grid hydrogen production mode, an off-grid charging mode, an off-grid waiting mode and a non-off-grid waiting mode.

[0118] The information generation module 404 is configured to generate energy scheduling information matched with the working mode for the working mode, wherein the energy scheduling information represents scheduling of the energy supply amount.

[0119] In some optional embodiments, the generation module 402 comprises:

[0120] The judgment unit is configured to judge whether the power generation amount reaches a first threshold value and whether the state of charge reaches an over-discharge threshold value.

[0121] The energy supply amount determination unit is configured to determine the energy supply amount according to the judgment result.

[0122] ​The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0123] The control device of the electrolysis hydrogen production system in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0124] The embodiment of the present invention also provides a computer device having the above Figure 4 The control device of the electrolysis hydrogen production system shown.

[0125] See also Figure 5 , Figure 5 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 5 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 5 A processor 10 is taken as an example.

[0126] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0127] The memory 20 stores instructions that can be executed by at least one processor 10, so as to enable at least one processor 10 to execute the method shown in the above embodiment.

[0128] The memory 20 can include a program storage area and a data storage area, where the program storage area can store an operating system, application programs required by at least one function, and the data storage area can store data created according to the use of the computer device, etc. In addition, the memory 20 can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some optional embodiments, the memory 20 can optionally include a memory disposed remotely with respect to the processor 10, which can be connected to the computer device through a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0129] The memory 20 can include a volatile memory, such as a random access memory; the memory can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid-state disk; and the memory 20 can also include a combination of the above-mentioned kinds of memories.

[0130] The computer device also includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30, and the output device 40 can be connected through a bus or other means, Figure 5 For example, by way of example, through a bus connection.

[0131] The input device 30 can receive inputted digital or character information, and generate key signal inputs related to the user settings and function controls of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointing stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 can include a display device, an auxiliary lighting device (e.g., an LED), a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes, but is not limited to, a liquid crystal display, a light-emitting diode, a display, and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0132] The embodiments of the present application further provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or stored in a remote storage medium or a non-transitory machine readable storage medium and downloaded to a local storage medium through network, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer code, when the software or computer code is accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0133] Part of the present application can be applied as a computer program product, for example, computer program instructions, when executed by a computer, the operation of the computer can invoke or provide the method and / or technical solutions according to the present application. Those skilled in the art should understand that the form of computer program instructions in computer readable medium includes but is not limited to source file, executable file, installation package file, etc. Correspondingly, the way of computer program instructions executed by computer includes but is not limited to: the computer directly executes the instructions, or the computer compiles the instructions and then executes the corresponding compiled program, or the computer reads and executes the instructions, or the computer reads and installs the instructions and then executes the corresponding installed program. Here, the computer readable medium can be any available computer readable storage medium or communication medium accessible to the computer.

[0134] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A control method for an electrolytic hydrogen production system, characterized in that: The electrolysis hydrogen production system includes a renewable energy power generation unit, an energy storage unit and a hydrogen production unit. The method includes: Obtaining the power generation of renewable energy power generation units and the state of charge of energy storage units; generating an energy supply for the electrolysis hydrogen production system based on the power generation and the state of charge; determining an operating mode of the electrolytic hydrogen production system that matches the energy supply, wherein the operating mode represents an operating state of a unit within the electrolytic hydrogen production system and is one of an off-grid hydrogen production mode, an off-grid charging mode, an off-grid waiting mode, and a non-off-grid waiting mode; For the working mode, generating energy scheduling information matching the working mode, wherein the energy scheduling information represents the scheduling of the energy supply; Generating the energy supply of the electrolysis hydrogen production system based on the power generation and the state of charge includes: When the power generation amount is greater than or equal to a first threshold and the state of charge is greater than an over-discharge threshold, the energy supply amount is a first supply amount; When the power generation amount is greater than or equal to the first threshold and the state of charge is less than or equal to the over-discharge threshold, the energy supply amount is the second supply amount; When the power generation amount is less than the first threshold and the state of charge is greater than the over-discharge threshold, the energy supply amount is a third supply amount; When the power generation amount is less than the first threshold and the state of charge is less than or equal to the over-discharge threshold, the energy supply amount is a fourth supply amount; Determining the operating mode of the electrolysis hydrogen production system that matches the energy supply includes: When the energy supply amount is the first supply amount, the working mode of the electrolysis hydrogen production system is the off-grid hydrogen production mode, and the hydrogen production unit starts to produce hydrogen; When the energy supply is the second supply amount, the operating mode of the electrolysis hydrogen production system is an off-grid charging mode, the hydrogen production unit stops producing hydrogen, and the energy storage unit is charged; When the energy supply is the third supply amount, the working mode of the electrolysis hydrogen production system is an off-grid waiting mode, the hydrogen production unit stops producing hydrogen, and the energy storage unit discharges; When the energy supply is the fourth supply amount, the working mode of the electrolysis hydrogen production system is a non-off-grid waiting mode, the hydrogen production unit stops producing hydrogen, and the electrolysis hydrogen production system is connected to the grid; When the operating mode of the electrolysis hydrogen production system is an off-grid hydrogen production mode, generating energy scheduling information matching the operating mode includes: Obtaining the basic power consumption of the electrolytic hydrogen production system and the hydrogen production power consumption of the hydrogen production unit to determine a first energy consumption of the electrolytic hydrogen production system, wherein the basic power consumption represents the power consumption of the power-consuming unit in the electrolytic hydrogen production system, and the hydrogen production power consumption represents the power consumption of hydrogen production by the hydrogen production unit, and the first energy consumption includes the basic power consumption and the hydrogen production power consumption; The power generation capacity supplies the first energy consumption demand of the electrolysis hydrogen production system in the off-grid hydrogen production mode; When the operating mode of the electrolysis hydrogen production system is an off-grid charging mode, generating energy scheduling information matching the operating mode includes: Obtaining a basic power consumption of the electrolytic hydrogen production system and a charge capacity of the energy storage unit to determine a second energy consumption of the electrolytic hydrogen production system, wherein the basic power consumption represents the power consumption of the power-consuming unit in the electrolytic hydrogen production system, and the charge capacity of the energy storage unit represents the amount of power required for the state of charge of the energy storage unit to reach a state above an over-discharge threshold, and the second energy consumption includes the basic power consumption and the charge capacity of the energy storage unit; The power generation capacity supplies the second energy consumption demand of the electrolysis hydrogen production system in the off-grid charging mode; When the working mode of the electrolysis hydrogen production system is an off-grid waiting mode, generating energy scheduling information matching the working mode includes: Obtaining a basic power consumption of the hydrogen production system by electrolysis to determine a third energy consumption of the hydrogen production system by electrolysis, wherein the basic power consumption represents the power consumption of power-consuming units in the hydrogen production system by electrolysis; The amount of stored electricity of the energy storage unit supplies the third energy consumption demand of the electrolysis hydrogen production system in the off-grid waiting mode; When the operating mode of the electrolysis hydrogen production system is a non-off-grid waiting mode, generating energy scheduling information matching the operating mode includes: Obtaining a basic power consumption of the hydrogen production system by electrolysis to determine a fourth energy consumption of the hydrogen production system by electrolysis, wherein the basic power consumption represents the power consumption of power-consuming units in the hydrogen production system by electrolysis; The power grid supplies the fourth energy consumption demand of the electrolysis hydrogen production system in the non-off-grid waiting mode.

2. The control method of the electrolysis hydrogen production system according to claim 1, characterized in that: The acquisition of the hydrogen production power consumption includes: Obtaining hydrogen production power of the hydrogen production unit, wherein the hydrogen production power matches the power generation power of the renewable energy power generation unit; The hydrogen production power consumption is determined based on the hydrogen production power.

3. The control method of the electrolysis hydrogen production system according to claim 1 or 2, characterized in that: The power-consuming unit in the electrolytic hydrogen production system includes at least one of the operation and maintenance equipment of the renewable energy power generation unit, the first safety equipment of the energy storage unit, and the second safety equipment of the hydrogen production unit.

4. A device for an electrolytic hydrogen production system, characterized in that: The control method for the electrolysis hydrogen production system according to any one of claims 1 to 3 is adopted, wherein the device comprises: An acquisition module is used to obtain the power generation of the renewable energy power generation unit and the charge state of the energy storage unit; a generating module, configured to generate an energy supply of the electrolysis hydrogen production system based on the power generation and the state of charge; a mode determination module, configured to determine an operating mode of the electrolytic hydrogen production system that matches the energy supply, wherein the operating mode represents an operating state of a unit within the electrolytic hydrogen production system and is one of an off-grid hydrogen production mode, an off-grid charging mode, an off-grid waiting mode, and a non-off-grid waiting mode; The information generation module is used to generate energy scheduling information matching the working mode, wherein the energy scheduling information represents the scheduling of the energy supply.

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