Power scheduling test method, device and system for offshore wind power hydrogen production

Abstract

The invention provides a power scheduling test method, device and system for offshore wind power hydrogen production, and the method comprises the steps: controlling offshore wind power simulation equipment to output first electric energy according to a preset power control parameter; responding to the condition that the power parameter of the first electric energy meets the preset power range of the hydrogen production equipment, and driving the hydrogen production equipment through the first electric energy; driving the hydrogen production equipment through the first electric energy and the second electric energy in response to the fact that the power parameter of the first electric energy is smaller than the power minimum value; wherein the second electric energy is provided by electric energy conversion equipment or energy storage equipment; the total power of the first electric energy and the second electric energy satisfies a power range; in response to the fact that the power parameter of the first electric energy is larger than the maximum power value, driving the hydrogen production equipment through the first electric energy, and reducing input power provided by the first electric energy to the hydrogen production equipment; wherein the input power meets the power range. According to the mode, the power dispatching test of offshore wind power hydrogen production can be realized, and the construction risk of offshore wind power hydrogen production is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power hydrogen production, in particular to a power scheduling test method, device and system for offshore wind power hydrogen production. BACKGROUND

[0002] Offshore wind power hydrogen production is to use offshore wind power generation devices to convert wind energy into electric energy, and then drive hydrogen production equipment by electric energy to realize the hydrogen production process. Wind energy has the characteristics of intermittency and volatility, and the offshore environment is also relatively complex, resulting in poor stability of offshore wind power. The hydrogen production equipment needs relatively stable electric energy, so the power scheduling of electric energy is needed in the hydrogen production process. In related technologies, there is a lack of power scheduling test method for offshore wind power hydrogen production, resulting in high construction risk of offshore wind power hydrogen production. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a power scheduling test method, device and system for offshore wind power hydrogen production to realize the power scheduling test of offshore wind power hydrogen production and reduce the construction risk of offshore wind power hydrogen production.

[0004] In a first aspect, the embodiments of the present application provide a power scheduling test method for offshore wind power hydrogen production. The hydrogen production equipment is connected to offshore wind power simulation equipment, electric energy conversion equipment and energy storage equipment. The method comprises the following steps: controlling the offshore wind power simulation equipment to output first electric energy according to preset power control parameters; driving the hydrogen production equipment by the first electric energy in response to the power parameters of the first electric energy meeting the preset power range of the hydrogen production equipment; wherein the power range comprises a power minimum value and a power maximum value; driving the hydrogen production equipment by the first electric energy and second electric energy in response to the power parameters of the first electric energy being less than the power minimum value; wherein the second electric energy is provided by the electric energy conversion equipment or the energy storage equipment; the total power of the first electric energy and the second electric energy meets the power range; driving the hydrogen production equipment by the first electric energy and reducing the input power provided by the first electric energy to the hydrogen production equipment in response to the power parameters of the first electric energy being greater than the power maximum value; wherein the input power meets the power range.

[0005] In some embodiments, the step of controlling the offshore wind power simulation equipment to output the first electric energy according to the preset power control parameters comprises the following steps: obtaining offshore wind speed parameters and offshore working condition parameters; wherein the offshore wind speed parameters comprise a plurality of offshore wind speed parameters arranged in sequence; determining the power control parameters based on the offshore wind speed parameters and the offshore working condition parameters; wherein the power control parameters comprise a plurality of power control parameters arranged in sequence; and sequentially sending the plurality of power control parameters to the offshore wind power simulation equipment to control the offshore wind power simulation equipment to output the first electric energy according to the power control parameters.

[0006] In some embodiments, the step of driving the hydrogen production device by the first electric energy and the second electric energy in response to the power parameter of the first electric energy being less than the power minimum value comprises: obtaining a charging state of the energy storage device in response to the power parameter of the first electric energy being less than the power minimum value; wherein the charging state comprises: charging and non-charging; providing the second electric energy by the electric energy conversion device in response to the energy storage device being charged; wherein the total power of the first electric energy and the second electric energy is equal to the power minimum value; providing the second electric energy by the energy storage device in response to the energy storage device being non-charged; wherein the total power of the first electric energy and the second electric energy is equal to the power maximum value; and driving the hydrogen production device by the first electric energy and the second electric energy.

[0007] In some embodiments, the step of driving the hydrogen production device by the first electric energy and reducing the input power provided by the first electric energy to the hydrogen production device in response to the power parameter of the first electric energy being greater than the power maximum value comprises: reducing the power parameter of the first electric energy output by the offshore wind power simulation device to be not greater than the power maximum value in response to the power parameter of the first electric energy being greater than the power maximum value; wherein the power parameter of the first electric energy is equal to the input power of the hydrogen production device; or controlling the offshore wind power simulation device to provide the hydrogen production device with an input power not greater than the power maximum value and charging the energy storage device by the offshore wind power simulation device in response to the power parameter of the first electric energy being greater than the power maximum value.

[0008] In some embodiments, the step of reducing the power parameter of the first electric energy output by the offshore wind power simulation device to be not greater than the power maximum value comprises: reducing the power parameter of the first electric energy output by the offshore wind power simulation device to be not greater than the power maximum value in response to the energy storage device being in a charging state or the state of charge parameter of the energy storage device being greater than a first parameter threshold.

[0009] In some embodiments, the step of controlling the offshore wind power simulation device to provide the hydrogen production device with an input power not greater than the power maximum value and charging the energy storage device by the offshore wind power simulation device in response to the power parameter of the first electric energy being greater than the power maximum value comprises: controlling the offshore wind power simulation device to provide the hydrogen production device with an input power equal to the power maximum value in response to the power parameter of the first electric energy being greater than the power maximum value; and controlling the offshore wind power simulation device to charge the energy storage device; wherein the sum of the charging power of the offshore wind power simulation device to the energy storage device and the input power provided by the offshore wind power simulation device to the hydrogen production device is equal to the power parameter of the first electric energy.

[0010] In some embodiments, the method further comprises: controlling the energy storage device to charge in response to the state of charge parameter of the energy storage device being less than a second parameter threshold, and stopping charging until the state of charge parameter of the energy storage device is greater than or equal to a third parameter threshold; wherein the third parameter threshold is greater than the second parameter threshold.

[0011] In some embodiments, the method further includes: in response to the shutdown of the offshore wind power simulation equipment, determining that the energy storage equipment is available and the state of charge parameters meet a preset parameter range, controlling the energy storage equipment to provide input power to the hydrogen production equipment so that the input power decreases at a preset rate; or, in response to the shutdown of the offshore wind power simulation equipment, determining that the energy storage equipment is unavailable or the state of charge parameters do not meet a preset parameter range, controlling the power conversion equipment to provide input power to the hydrogen production equipment so that the input power decreases at a preset rate; and controlling the hydrogen production equipment to shut down when the input power decreases to a specified power.

[0012] Secondly, embodiments of this application provide a power dispatching test device for offshore wind power hydrogen production. The hydrogen production equipment is connected to an offshore wind power simulation device, a power conversion device, and an energy storage device. The device includes: a power output module for controlling the offshore wind power simulation device to output first electrical energy according to preset power control parameters; a first drive module for driving the hydrogen production device with the first electrical energy in response to the power parameters of the first electrical energy meeting a preset power range of the hydrogen production device; wherein the power range includes a minimum power value and a maximum power value; a second drive module for driving the hydrogen production device with the first electrical energy and a second electrical energy in response to the power parameters of the first electrical energy being less than the minimum power value; wherein the second electrical energy is provided through a power conversion device or an energy storage device; the total power of the first electrical energy and the second electrical energy meets the power range; and a third drive module for driving the hydrogen production device with the first electrical energy in response to the power parameters of the first electrical energy being greater than the maximum power value, and reducing the input power provided by the first electrical energy to the hydrogen production device; wherein the input power meets the power range.

[0013] Thirdly, this application provides a power dispatch test system for offshore wind power hydrogen production. The system includes: a hydrogen production device, an offshore wind power simulation device, a power conversion device, an energy storage device, and a controller. The hydrogen production device is connected to the offshore wind power simulation device, the power conversion device, and the energy storage device. The controller is connected to the hydrogen production device, the offshore wind power simulation device, the power conversion device, and the energy storage device. The controller executes the above-described power dispatch test method for offshore wind power hydrogen production.

[0014] The aforementioned power dispatch test method, device, and system for offshore wind power hydrogen production simulates the output characteristics of offshore wind power through offshore wind power simulation equipment. The offshore wind power simulation equipment, power conversion equipment, and energy storage equipment jointly participate in power dispatch, realizing the power dispatch test of offshore wind power hydrogen production and reducing the construction risk of offshore wind power hydrogen production.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a power dispatch test system for offshore wind power hydrogen production provided in this application embodiment; Figure 2 A flowchart of a power dispatching test method for offshore wind power hydrogen production provided in this application embodiment; Figure 3 A flowchart of another power dispatch test method for offshore wind power hydrogen production provided in this application embodiment; Figure 4 A flowchart illustrating the charging process of an energy storage device provided in this application embodiment; Figure 5 This is a schematic diagram of a power dispatch test device for offshore wind power hydrogen production provided in an embodiment of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The lack of power dispatch testing methods for offshore wind power hydrogen production in related technologies leads to high construction risks for offshore wind power hydrogen production. Based on this, the embodiments of this application provide a power dispatch testing method, apparatus and system for offshore wind power hydrogen production, which can be applied to the simulation, research and development and testing of offshore wind power hydrogen production.

[0020] First, see Figure 1 The diagram shows a power dispatch test system for hydrogen production from offshore wind power. The system includes: a hydrogen production device 10, an offshore wind power simulation device 11, a power conversion device 12, an energy storage device 13, and a controller 14. The hydrogen production device 10 is connected to the offshore wind power simulation device 11, the power conversion device 12, and the energy storage device 13. The controller 14 is connected to the hydrogen production device 10, the offshore wind power simulation device 11, the power conversion device 12, and the energy storage device 13.

[0021] The aforementioned hydrogen production equipment includes an electrolyzer and hydrogen storage equipment; the offshore wind power simulation equipment includes an AC / DC converter, a DC / AC converter, an AC / DC converter, and a control device; the control device is connected to the aforementioned controller and is used to receive control commands from the controller and control the operation of the AC / DC converter, DC / AC converter, and AC / DC converter. The offshore wind power simulation equipment can input AC power from the power grid or other AC power sources and output DC power. The aforementioned power conversion equipment can input AC power from the power grid or other AC power sources, convert the AC power into DC power, and output DC power. The energy storage device can be a battery or other form of energy storage.

[0022] The hydrogen production equipment is electrically connected to the offshore wind power simulation equipment, power conversion equipment, and energy storage equipment. All three systems can supply power to the hydrogen production equipment. The controller is communicatively connected to these systems, such as... Figure 1 As shown by the dashed lines, the controller can send control signals and commands to the hydrogen production equipment, offshore wind power simulation equipment, power conversion equipment, and energy storage equipment. The hydrogen production equipment, offshore wind power simulation equipment, power conversion equipment, and energy storage equipment can send operating data and equipment data to the controller. The controller executes the power scheduling test method for offshore wind power hydrogen production in this embodiment.

[0023] like Figure 2 As shown, the power dispatch test method for offshore wind power hydrogen production includes the following steps: Step S202: Control the offshore wind power simulation equipment to output the first electrical energy according to the preset power control parameters; Power control parameters can include power parameters, voltage parameters, current parameters, etc. To simulate the intermittency and fluctuation of offshore wind power, these power control parameters can change over time, causing the power, voltage, and current of the initial electrical energy to vary over time. Power control parameters can be pre-stored in the offshore wind power simulation equipment or sent to the equipment via the controller.

[0024] Step S204: In response to the power parameters of the first electrical energy satisfying the preset power range of the hydrogen production equipment, the hydrogen production equipment is driven by the first electrical energy; wherein, the power range includes a minimum power value and a maximum power value; To maintain the normal operation of the hydrogen production equipment, its input power needs to be relatively stable. The equipment can operate normally when its input power falls within the aforementioned power range. Since the power output of the initial electrical energy from the offshore wind power simulation equipment may vary, it is necessary to determine whether the power parameters of the initial electrical energy meet this power range. If so, the initial electrical energy is input to the hydrogen production equipment, driving its operation. The minimum and maximum power values ​​within this range are typically set based on the equipment parameters of the hydrogen production equipment.

[0025] Step S206: In response to the power parameter of the first electrical energy being less than the minimum power value, the hydrogen production equipment is driven by the first electrical energy and the second electrical energy; wherein the second electrical energy is provided by an energy conversion device or an energy storage device; the total power of the first electrical energy and the second electrical energy meets the power range. If the power parameter of the first electrical energy is less than the minimum power value, it indicates that the first electrical energy is too low and insufficient to maintain the normal operation of the hydrogen production equipment. In this case, the first electrical energy and the second electrical energy need to work together to supply power to the hydrogen production equipment. The total power of the first electrical energy and the second electrical energy is used as the input power of the hydrogen production equipment, and it must meet the power range. Specifically, the total power of the first electrical energy and the second electrical energy can be the minimum power value, the maximum power value, or other power values ​​within the aforementioned power range.

[0026] The second electrical energy can be provided by either a power conversion device or an energy storage device. The specific choice depends on factors such as the charge capacity of the energy storage device and the input power status of the power conversion device.

[0027] In step S208, in response to the power parameter of the first electrical energy being greater than the maximum power value, the hydrogen production equipment is driven by the first electrical energy, and the input power supplied by the first electrical energy to the hydrogen production equipment is reduced; wherein the input power meets the power range.

[0028] If the power parameter of the first electrical energy is greater than the maximum power value, it indicates that the first electrical energy is relatively high. In order to ensure that the input power of the hydrogen production equipment is within the power range, it is necessary to reduce the power of the first electrical energy itself to the power range, or to divert the first electrical energy, with a portion of the power of the first electrical energy input to the hydrogen production equipment so that the input power of the hydrogen production equipment meets the power range, and the other portion of the power of the first electrical energy input to other equipment, such as other load equipment or energy storage equipment.

[0029] The aforementioned power dispatch test method for offshore wind power hydrogen production involves connecting a hydrogen production device to an offshore wind power simulation device, a power conversion device, and an energy storage device. The offshore wind power simulation device is controlled to output first electrical energy according to preset power control parameters. In response to the power parameters of the first electrical energy meeting the preset power range of the hydrogen production device, the hydrogen production device is driven by the first electrical energy. The power range includes a minimum power value and a maximum power value. In response to the power parameters of the first electrical energy being less than the minimum power value, the hydrogen production device is driven by both the first and second electrical energy. The second electrical energy is provided through the power conversion device or the energy storage device. The total power of the first and second electrical energy meets the power range. In response to the power parameters of the first electrical energy being greater than the maximum power value, the hydrogen production device is driven by the first electrical energy, and the input power supplied by the first electrical energy to the hydrogen production device is reduced. The input power meets the power range.

[0030] In the above method, the output characteristics of offshore wind power are simulated by offshore wind power simulation equipment. The offshore wind power simulation equipment, power conversion equipment and energy storage equipment jointly participate in power dispatch, realizing the power dispatch test of offshore wind power hydrogen production and reducing the construction risk of offshore wind power hydrogen production.

[0031] In one specific implementation, offshore wind speed parameters and offshore operating condition parameters are obtained; wherein, the offshore wind speed parameters include multiple parameters arranged in sequence; based on the offshore wind speed parameters and offshore operating condition parameters, power control parameters are determined; wherein, the power control parameters include multiple parameters arranged in sequence; and the multiple power control parameters are sequentially sent to an offshore wind power simulation device to control the offshore wind power simulation device to output first electrical energy according to the power control parameters.

[0032] The aforementioned sea wind speed parameters and marine operating condition parameters are all simulation parameters. The sea wind speed parameters are used to simulate sea wind speed; multiple sea wind speed parameters, at least partially different, are used to simulate variations in sea wind speed. These multiple sea wind speed parameters can be in the form of wind speed curves, arranged in chronological order. Marine operating condition parameters include parameters such as temperature, humidity, wave height, and weather, used to simulate the marine environment. Multiple marine operating condition parameters can also be included, simulating variations in marine operating conditions.

[0033] The system can input marine wind speed parameters and marine operating condition parameters into a preset model or algorithm, and output a power control parameter. This power control parameter is used to control the power of the first electrical energy source. The power control parameter is affected by both the marine wind speed parameter and the marine operating condition parameter. In actual implementation, after inputting one marine wind speed parameter and one marine operating condition parameter into the preset model or algorithm, one power control parameter is output. The number and order of multiple power control parameters can correspond to the number and order of multiple marine wind speed parameters.

[0034] When multiple offshore wind speed parameters change in sequence, multiple power control parameters also change in sequence. These multiple power control parameters sequentially control the first electrical energy of the offshore wind power simulation equipment, making the power of the first electrical energy also highly variable, thereby simulating the intermittency and volatility of offshore wind power.

[0035] In one implementation, in response to the power parameter of the first electrical energy being less than the minimum power value, the charging state of the energy storage device is obtained, wherein the charging state includes: charging and not charging; in response to the energy storage device being charged, a second electrical energy is provided through an energy conversion device; wherein the total power of the first electrical energy and the second electrical energy is equal to the minimum power value; in response to the energy storage device not charging, the second electrical energy is provided through the energy storage device; wherein the total power of the first electrical energy and the second electrical energy is equal to the maximum power value; and the hydrogen production device is driven by the first electrical energy and the second electrical energy.

[0036] The controller can send status detection commands to the energy storage device to detect its charging status. The energy storage device can be charged through the power grid or other power supply equipment. While the energy storage device is charging, it cannot output secondary electrical energy. Therefore, if the energy storage device is charging, secondary electrical energy is provided through a power conversion device. The total power of the primary and secondary electrical energy equals the minimum power. Power conversion devices typically use the power grid for power supply, which is costly. Therefore, to save costs, the total power of the primary and secondary electrical energy is equal to the minimum power; that is, the power is increased by using secondary electrical energy to increase the power of the primary electrical energy, so that the increased total power reaches the minimum power.

[0037] If the energy storage device is not charged, a second source of electrical energy is provided through it; the total power of the first and second sources of electrical energy equals the maximum power. When the energy storage device is not charged, it can output a second source of electrical energy. The energy storage device can be charged through the power grid, offshore wind power simulation equipment, or other power supply equipment, resulting in lower power supply costs. Therefore, when the energy storage device is not charged, it is used to provide a second source of electrical energy. Furthermore, the total power of the first and second sources of electrical energy equals the maximum power, thereby increasing the hydrogen production output of the hydrogen production equipment.

[0038] In one implementation, in response to the power parameter of the first electrical energy being greater than the maximum power value, the power parameter of the first electrical energy output by the offshore wind power simulation equipment is reduced to no greater than the maximum power value. The power parameter of the first electrical energy is equal to the input power of the hydrogen production equipment. The reduced power parameter of the first electrical energy can be equal to or less than the maximum power value, but it must not be less than the minimum power value. After the power parameter of the first electrical energy is reduced, all of the first electrical energy is input to the hydrogen production equipment, meaning the power parameter of the first electrical energy equals the input power of the hydrogen production equipment.

[0039] Specifically, in response to the energy storage device being in a charging state, or the energy storage device's state of charge (SOC) parameter exceeding a first parameter threshold, the power parameter of the first electrical energy output by the offshore wind power simulation device is reduced to no greater than its maximum power. When the energy storage device is in a charging state, for example, being charged via the grid, it can no longer be charged using the first electrical energy output by the offshore wind power simulation device. In this case, to maintain the normal operation of the hydrogen production equipment, the power parameter of the first electrical energy must be reduced to no greater than its maximum power. Similarly, when the energy storage device's SOC parameter exceeds the first parameter threshold, it cannot be charged either. In this case, the power parameter of the first electrical energy must also be reduced to no greater than its maximum power. The SOC parameter indicates the remaining charge of the energy storage device, and this first parameter threshold can be preset, for example, 90%.

[0040] Alternatively, in response to the power parameter of the first electrical energy being greater than the maximum power value, the offshore wind power simulation equipment is controlled to provide input power to the hydrogen production equipment that is no greater than the maximum power value, and the energy storage equipment is charged through the offshore wind power simulation equipment. In this method, the power parameter of the first electrical energy is not reduced, but a portion of the power is diverted to the energy storage equipment. Specifically, the input power provided by the first electrical energy to the hydrogen production equipment is less than or equal to the maximum power value, but not less than the minimum power value. Since the power parameter of the first electrical energy is greater than the maximum power value, after providing input power to the hydrogen production equipment, there is still residual power in the first electrical energy, and this residual power is used to charge the energy storage equipment.

[0041] Specifically, in response to the fact that the power parameter of the first electrical energy is greater than the maximum power value, the power parameter of the first electrical energy is kept constant, and the offshore wind power simulation equipment is controlled to provide the maximum power input to the hydrogen production equipment; the offshore wind power simulation equipment is also controlled to charge the energy storage equipment; wherein, the sum of the charging power of the offshore wind power simulation equipment to the energy storage equipment and the input power provided by the offshore wind power simulation equipment to the hydrogen production equipment is equal to the aforementioned power parameter of the first electrical energy. This method can store the remaining electrical energy from the first electrical energy output by the offshore wind power simulation equipment, excluding the power supplied to the hydrogen production equipment, through the energy storage equipment. The energy storage equipment can then provide auxiliary power to the hydrogen production equipment when the first electrical energy is insufficient, thereby reducing the cost of hydrogen production and power supply.

[0042] Figure 3 A flowchart of another power dispatch test method for offshore wind power hydrogen production is shown, including the following steps: Step S302: Obtain the power parameters of the first electrical energy; Step S304: Determine the relationship between the power parameters of the first electrical energy and the power range of the hydrogen production equipment; if the power parameters of the first electrical energy meet the preset power range of the hydrogen production equipment, proceed to step S306; if the power parameters of the first electrical energy are less than the minimum power value, proceed to step S308; if the power parameters of the first electrical energy are greater than the maximum power value, proceed to step S314. Step S306: Set the input power of the hydrogen production equipment to equal the power parameter of the first electrical energy; execute step S322; Step S308: Determine the charging status of the energy storage device; if it is charging, proceed to step S310; if it is not charging, proceed to step S312. Step S310: Set the input power of the hydrogen production equipment to equal the minimum power value, and provide second electrical energy through the power conversion equipment; wherein, the total power of the first electrical energy and the second electrical energy is equal to the minimum power value; proceed to step S322; Step S312: Set the input power of the hydrogen production equipment to equal the maximum power, and provide second electrical energy through the energy storage device; wherein, the total power of the first electrical energy and the second electrical energy is equal to the maximum power; proceed to step S322. Step S314: Determine the charging status of the energy storage device; if it is charging, proceed to step S316; if it is not charging, proceed to step S318. Step S316: Reduce the power parameter of the first electrical energy to the maximum power value, set the input power of the hydrogen production equipment to be equal to the power parameter of the first electrical energy, and execute step S322; Step S318: Determine whether the state of charge parameter of the energy storage device is greater than the first parameter threshold; if yes, proceed to step S316; if not, proceed to step S320. Step S320: Set the input power of the hydrogen production equipment to equal the maximum power value, and control the first electrical energy output by the offshore wind power simulation equipment to charge the energy storage device; wherein, the charging power to the energy storage device is equal to the difference between the power parameter of the first electrical energy and the maximum power value; Step S322: Provide electrical energy of the aforementioned input power to the hydrogen production equipment to start the hydrogen production process; execute step S302.

[0043] After hydrogen production begins, the above steps can be repeated multiple times. For example, the power parameters of the first electrical energy can be acquired periodically, and then subsequent steps can be executed; or, when the power parameters of the first electrical energy change, subsequent steps can be executed.

[0044] In one implementation, in response to the energy storage device's state of charge (SOC) parameter being less than a second parameter threshold, the energy storage device is controlled to charge until its SOC parameter is greater than or equal to a third parameter threshold, at which point charging stops; wherein the third parameter threshold is greater than the second parameter threshold. The second and third parameter thresholds can be set according to requirements, for example, the second parameter threshold can be 10%, 15%, etc., and the third parameter threshold can be 50%, 70%, etc.

[0045] Specifically, the energy storage device can be charged through the power grid. When the state of charge parameter of the energy storage device reaches the third parameter threshold, charging is stopped, so that the energy storage device stores a certain amount of electricity, which can be used to provide a second power to the hydrogen production device when the first power is insufficient.

[0046] like Figure 4 As shown, the specific charging process of the energy storage device includes the following steps: Step S402: Obtain the state of charge parameters of the energy storage device; Step S404: Determine whether the state of charge parameter of the energy storage device is less than the second parameter threshold; if yes, proceed to step S406; if no, proceed to step S404. Step S406: Control the energy storage device to connect to the power grid and charge it; Step S408: Determine whether the state of charge parameter of the energy storage device is greater than or equal to the third parameter threshold. If yes, proceed to step S410; otherwise, proceed to step S406. Step S410: Control the energy storage device to stop charging, disconnect the grid connection, and execute step S402.

[0047] The above steps can be executed repeatedly. For example, the state of charge (SOC) parameters of the energy storage device can be obtained periodically, and then subsequent steps can be executed. Alternatively, the subsequent steps can be executed after the SOC parameters of the energy storage device change.

[0048] Furthermore, in response to the shutdown of the offshore wind power simulation equipment, if it is determined that the energy storage equipment is available and the state of charge parameters meet the preset parameter range, the energy storage equipment is controlled to provide input power to the hydrogen production equipment so that the input power decreases at a preset rate; or, in response to the shutdown of the offshore wind power simulation equipment, if it is determined that the energy storage equipment is unavailable or the state of charge parameters do not meet the preset parameter range, the power conversion equipment is controlled to provide input power to the hydrogen production equipment so that the input power decreases at a preset rate; when the input power decreases to a specified power, the hydrogen production equipment is controlled to shut down.

[0049] When the offshore wind power simulation equipment shuts down, it stops outputting the first electrical energy, causing a sharp drop in the input power of the hydrogen production equipment, which can easily lead to damage to the equipment. Therefore, in this embodiment, when the offshore wind power simulation equipment shuts down, the input power of the hydrogen production equipment is gradually reduced through energy storage or power conversion equipment until it shuts down.

[0050] Specifically, the process first determines whether the energy storage device is available and whether its state of charge (SCC) parameters meet the preset range. If the energy storage device is fault-free, it is determined to be available; if it is faulty, it is determined to be unavailable. The aforementioned parameter range can be preset, for example, greater than 10%, 10%-90%, etc. When the energy storage device is available and its SCC parameters meet the preset range, the device is controlled to output electrical energy to provide input power to the hydrogen production equipment. The energy storage device can control its output power according to a preset shutdown power curve, causing the input power of the hydrogen production equipment to gradually decrease until it reaches zero. The rate of change of the slope of this shutdown power curve is the aforementioned rate of decrease. To avoid a sudden drop in power, the rate of change of the slope of this shutdown power curve is small, causing the input power of the hydrogen production equipment to decrease slowly.

[0051] If the energy storage device is unavailable or its state of charge (SOC) parameters do not meet the preset range, it cannot be used. In this case, a power conversion device is required. Similarly, the power conversion device outputs electrical energy to provide input power to the hydrogen production equipment. The power conversion device can control its output power according to a preset shutdown power curve, causing the input power of the hydrogen production equipment to gradually decrease until it reaches zero. The rate of change of the slope of this shutdown power curve is the aforementioned rate of decrease. To avoid a sudden drop in power, the rate of change of the slope of this shutdown power curve is small, resulting in a slow decrease in the input power of the hydrogen production equipment.

[0052] The power dispatch test method for offshore wind power hydrogen production provided in this embodiment can simulate the entire process of offshore wind power hydrogen production, greatly reducing the investment risk of offshore hydrogen production projects; it can simulate the power output of wind turbine units under real offshore operating conditions, which has practical reference significance for offshore hydrogen production projects; through the regulation of power conversion equipment and energy storage equipment directly connected to the grid, it ensures that the hydrogen production equipment can operate within the efficient operating range, avoiding damage to the hydrogen production equipment caused by sudden increases and decreases in wind power generation.

[0053] The power dispatch test method for offshore wind power hydrogen production provided in this embodiment simulates the actual output of offshore wind power and performs power dispatch on the hydrogen production process. This solves the contradiction between the intermittency of wind power output and the stability of hydrogen production, and achieves maximum hydrogen production, optimal system efficiency and minimum cost under fluctuating wind energy input.

[0054] See Figure 5The diagram shows a power dispatch test device for hydrogen production from offshore wind power. The hydrogen production equipment is connected to an offshore wind power simulation device, a power conversion device, and an energy storage device. The device includes: The power output module 50 is used to control the offshore wind power simulation equipment to output the first power according to the preset power control parameters; The first drive module 51 is used to drive the hydrogen production equipment by means of the first electrical energy in response to the power parameters of the first electrical energy meeting the preset power range of the hydrogen production equipment; wherein, the power range includes a minimum power value and a maximum power value; The second drive module 52 is used to drive the hydrogen production equipment with the first electrical energy and the second electrical energy in response to the power parameter of the first electrical energy being less than the minimum power value; wherein the second electrical energy is provided through an electrical energy conversion device or an energy storage device; the total power of the first electrical energy and the second electrical energy meets the power range. The third drive module 53 is used to drive the hydrogen production equipment with the first electrical energy in response to the first electrical energy having a power parameter greater than the maximum power value, and to reduce the input power supplied by the first electrical energy to the hydrogen production equipment; wherein the input power meets the power range.

[0055] The aforementioned power dispatch test device for offshore wind power hydrogen production connects the hydrogen production equipment to an offshore wind power simulation device, a power conversion device, and an energy storage device. It controls the offshore wind power simulation device to output first electrical energy according to preset power control parameters. In response to the power parameters of the first electrical energy meeting the preset power range of the hydrogen production equipment, the hydrogen production equipment is driven by the first electrical energy; wherein the power range includes a minimum power value and a maximum power value. In response to the power parameters of the first electrical energy being less than the minimum power value, the hydrogen production equipment is driven by both the first and second electrical energy; wherein the second electrical energy is provided through the power conversion device or the energy storage device. The total power of the first and second electrical energy meets the power range. In response to the power parameters of the first electrical energy being greater than the maximum power value, the hydrogen production equipment is driven by the first electrical energy, and the input power supplied by the first electrical energy to the hydrogen production equipment is reduced; wherein the input power meets the power range.

[0056] In the above method, the output characteristics of offshore wind power are simulated by offshore wind power simulation equipment. The offshore wind power simulation equipment, power conversion equipment and energy storage equipment jointly participate in power dispatch, realizing the power dispatch test of offshore wind power hydrogen production and reducing the construction risk of offshore wind power hydrogen production.

[0057] The aforementioned power output module is used to: acquire offshore wind speed parameters and offshore operating condition parameters; wherein, the offshore wind speed parameters include multiple parameters arranged in sequence; determine power control parameters based on the offshore wind speed parameters and offshore operating condition parameters; wherein, the power control parameters include multiple parameters arranged in sequence; and send the multiple power control parameters sequentially to the offshore wind power simulation equipment to control the offshore wind power simulation equipment to output the first power according to the power control parameters.

[0058] The second driving module is configured to: obtain the charging state of the energy storage device in response to the power parameter of the first electrical energy being less than the minimum power value; wherein the charging state includes: charging and not charging; provide second electrical energy through the power conversion device in response to the energy storage device being charged; wherein the total power of the first electrical energy and the second electrical energy is equal to the minimum power value; provide second electrical energy through the energy storage device in response to the energy storage device not charging; wherein the total power of the first electrical energy and the second electrical energy is equal to the maximum power value; and drive the hydrogen production device through the first electrical energy and the second electrical energy.

[0059] The aforementioned third driving module is configured to: in response to the power parameter of the first electrical energy being greater than the maximum power value, reduce the power parameter of the first electrical energy output by the offshore wind power simulation device to no greater than the maximum power value; wherein the power parameter of the first electrical energy is equal to the input power of the hydrogen production device; or, in response to the power parameter of the first electrical energy being greater than the maximum power value, control the offshore wind power simulation device to provide an input power to the hydrogen production device that is no greater than the maximum power value, and charge the energy storage device through the offshore wind power simulation device.

[0060] The aforementioned third drive module is used to: in response to the energy storage device being in a charging state, or the energy storage device's state of charge parameter being greater than the first parameter threshold, reduce the power parameter of the first electrical energy output by the offshore wind power simulation device to no greater than the maximum power value.

[0061] The aforementioned third driving module is used to: in response to the power parameter of the first electrical energy being greater than the maximum power value, control the offshore wind power simulation device to provide the input power of the maximum power value to the hydrogen production device; control the offshore wind power simulation device to charge the energy storage device; wherein the sum of the charging power of the offshore wind power simulation device charging the energy storage device and the input power provided by the offshore wind power simulation device to the hydrogen production device is equal to the power parameter of the first electrical energy.

[0062] The aforementioned device further includes a charging control module, used to: control the energy storage device to charge in response to the energy storage device's state of charge parameter being less than a second parameter threshold, until the energy storage device's state of charge parameter is greater than or equal to a third parameter threshold, and then stop charging; wherein the third parameter threshold is greater than the second parameter threshold.

[0063] The aforementioned device also includes a shutdown control module, configured to: in response to the shutdown of the offshore wind power simulation equipment, determine that the energy storage equipment is available and that the state of charge parameters meet a preset parameter range, and control the energy storage equipment to provide input power to the hydrogen production equipment so that the input power decreases at a preset rate; or, in response to the shutdown of the offshore wind power simulation equipment, determine that the energy storage equipment is unavailable or that the state of charge parameters do not meet a preset parameter range, and control the power conversion equipment to provide input power to the hydrogen production equipment so that the input power decreases at a preset rate; and when the input power decreases to a specified power, control the hydrogen production equipment to shut down.

[0064] This embodiment also provides a power dispatch test system for offshore wind power hydrogen production. The system includes: a hydrogen production device, an offshore wind power simulation device, a power conversion device, an energy storage device, and a controller; the hydrogen production device is connected to the offshore wind power simulation device, the power conversion device, and the energy storage device respectively; the controller is connected to the hydrogen production device, the offshore wind power simulation device, the power conversion device, and the energy storage device respectively; the controller executes the power dispatch test method for offshore wind power hydrogen production.

[0065] The power dispatching test method, apparatus, and system for offshore wind power hydrogen production provided in this embodiment can output matching wind power output by inputting configurable offshore wind speed and offshore operating conditions. The controller performs power dispatching on the offshore wind power simulation equipment, power conversion equipment, and energy storage equipment to form a power closed-loop response, ensuring the stability of the input power of the hydrogen production equipment. This solves the contradiction between the intermittency of wind power output and the stability of hydrogen production, and maximizes hydrogen production, optimizes system efficiency, and minimizes costs under fluctuating wind energy input.

[0066] Furthermore, in the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0067] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0068] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0069] Finally, it should be noted that the above embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A power dispatching test method for offshore wind power hydrogen production, characterized in that, The hydrogen production equipment is connected to an offshore wind power simulation device, a power conversion device, and an energy storage device, respectively. The method includes: The offshore wind power simulation equipment is controlled to output the first electrical energy according to preset power control parameters; In response to the power parameters of the first electrical energy satisfying the preset power range of the hydrogen production equipment, the hydrogen production equipment is driven by the first electrical energy; wherein, the power range includes a minimum power value and a maximum power value; In response to the fact that the power parameter of the first electrical energy is less than the minimum power value, the hydrogen production equipment is driven by the first electrical energy and the second electrical energy; wherein the second electrical energy is provided by the power conversion equipment or the energy storage equipment; the total power of the first electrical energy and the second electrical energy meets the power range. In response to the power parameter of the first electrical energy being greater than the maximum power value, the hydrogen production device is driven by the first electrical energy, and the input power supplied by the first electrical energy to the hydrogen production device is reduced; wherein the input power satisfies the power range.

2. The method according to claim 1, characterized in that, The steps of controlling the offshore wind power simulation equipment to output first electrical energy according to preset power control parameters include: Obtain marine wind speed parameters and marine operating condition parameters; wherein, the marine wind speed parameters include multiple parameters, and the multiple marine wind speed parameters are arranged in sequence; Based on the sea wind speed parameters and the sea operating condition parameters, power control parameters are determined; wherein, the power control parameters include multiple parameters, and the multiple power control parameters are arranged in sequence; Multiple power control parameters are sequentially sent to the offshore wind power simulation equipment to control the offshore wind power simulation equipment to output first electrical energy according to the power control parameters.

3. The method according to claim 1, characterized in that, The step of driving the hydrogen production equipment with the first electrical energy and the second electrical energy in response to the power parameter of the first electrical energy being less than the minimum power value includes: In response to the power parameter of the first electrical energy being less than the minimum power value, the charging state of the energy storage device is obtained; wherein, the charging state includes: charging and not charging; In response to the energy storage device being charged, a second electrical energy is provided through the power conversion device; wherein the total power of the first electrical energy and the second electrical energy is equal to the minimum power value; In response to the energy storage device not being charged, a second electrical energy is provided through the energy storage device; wherein the total power of the first electrical energy and the second electrical energy is equal to the maximum power value; The hydrogen production equipment is driven by the first electrical energy and the second electrical energy.

4. The method according to claim 1, characterized in that, The steps of responding to a situation where the power parameter of the first electrical energy is greater than the maximum power value, driving the hydrogen production device with the first electrical energy, and reducing the input power supplied by the first electrical energy to the hydrogen production device, include: In response to the fact that the power parameter of the first electrical energy is greater than the maximum power value, the power parameter of the first electrical energy output by the offshore wind power simulation equipment is reduced to no greater than the maximum power value; wherein, the power parameter of the first electrical energy is equal to the input power of the hydrogen production equipment; Alternatively, in response to the power parameter of the first electrical energy being greater than the maximum power value, the offshore wind power simulation device is controlled to provide an input power to the hydrogen production device that is not greater than the maximum power value, and the energy storage device is charged through the offshore wind power simulation device.

5. The method according to claim 4, characterized in that, The step of reducing the power parameter of the first electrical energy output by the offshore wind power simulation equipment to no greater than the maximum power value includes: In response to the energy storage device being in a charging state, or the state of charge parameter of the energy storage device being greater than a first parameter threshold, the power parameter of the first electrical energy output by the offshore wind power simulation device is reduced to no greater than the maximum power value.

6. The method according to claim 4, characterized in that, The steps of controlling the offshore wind power simulation equipment to provide input power no greater than the maximum power value to the hydrogen production equipment in response to the power parameter of the first electrical energy being greater than the maximum power value, and charging the energy storage equipment through the offshore wind power simulation equipment, include: In response to the power parameter of the first electrical energy being greater than the maximum power value, the offshore wind power simulation equipment is controlled to provide the input power of the maximum power value to the hydrogen production equipment; The offshore wind power simulation equipment is controlled to charge the energy storage device; wherein the sum of the charging power of the offshore wind power simulation equipment to the energy storage device and the input power provided by the offshore wind power simulation equipment to the hydrogen production device is equal to the power parameter of the first electrical energy.

7. The method according to claim 1, characterized in that, The method further includes: In response to the energy storage device's state of charge parameter being less than a second parameter threshold, the energy storage device is controlled to charge until the energy storage device's state of charge parameter is greater than or equal to a third parameter threshold, at which point charging stops; wherein the third parameter threshold is greater than the second parameter threshold.

8. The method according to claim 1, characterized in that, The method further includes: In response to the shutdown of the offshore wind power simulation equipment, if it is determined that the energy storage device is available and the state of charge parameters meet the preset parameter range, the energy storage device is controlled to provide input power to the hydrogen production device so that the input power decreases at a preset rate. Alternatively, in response to the shutdown of the offshore wind power simulation equipment, if it is determined that the energy storage equipment is unavailable or the state of charge parameters do not meet the preset parameter range, the power conversion equipment is controlled to provide input power to the hydrogen production equipment so that the input power decreases at a preset rate. When the input power decreases to a specified power, the hydrogen production equipment is shut down.

9. A power dispatching test device for offshore wind power hydrogen production, characterized in that, The hydrogen production equipment is connected to the offshore wind power simulation equipment, the power conversion equipment, and the energy storage equipment, respectively. The device includes: The power output module is used to control the offshore wind power simulation equipment to output the first power according to the preset power control parameters; A first drive module is configured to drive the hydrogen production equipment via the first electrical energy in response to the power parameters of the first electrical energy satisfying a preset power range of the hydrogen production equipment; wherein the power range includes a minimum power value and a maximum power value. The second drive module is configured to drive the hydrogen production equipment using the first electrical energy and the second electrical energy in response to the power parameter of the first electrical energy being less than the minimum power value; wherein the second electrical energy is provided by the power conversion device or the energy storage device; and the total power of the first electrical energy and the second electrical energy meets the power range. The third driving module is configured to drive the hydrogen production equipment with the first electrical energy in response to the power parameter of the first electrical energy being greater than the maximum power value, and to reduce the input power supplied by the first electrical energy to the hydrogen production equipment; wherein the input power satisfies the power range.

10. A power dispatching test system for offshore wind power hydrogen production, characterized in that, The system includes: hydrogen production equipment, offshore wind power simulation equipment, power conversion equipment, energy storage equipment, and controller; The hydrogen production equipment is connected to the offshore wind power simulation equipment, the power conversion equipment, and the energy storage equipment, respectively; the controller is connected to the hydrogen production equipment, the offshore wind power simulation equipment, the power conversion equipment, and the energy storage equipment, respectively. The controller executes the power dispatch test method for offshore wind power hydrogen production as described in any one of claims 1-8.

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