Hydrogen fuel cell real-time control method and device, storage medium and program product

Abstract

The invention belongs to the technical field of control, and particularly relates to a hydrogen fuel cell real-time control method and device, a storage medium and a program product. The action of the hydrogen fuel cell is controlled according to the start-stop plan of the hydrogen fuel cell, and the start-stop plan of the hydrogen fuel cell is obtained according to the load plan power: when the load plan power is lower than the safety generation power lower limit of the hydrogen fuel cell, the start-stop plan is shutdown; when the load plan power is higher than the safety generation power lower limit of the hydrogen fuel cell, the start-stop plan is starting; according to the start-stop plan of the fuel cell, the start-stop control process of the hydrogen fuel cell is added. The problem that the loss of the output power of the hydrogen fuel cell is increased due to the fact that an existing power generation system real-time control method does not accord with a scheduling plan is solved.

Description

Technical Field

[0001] This invention belongs to the field of control technology, specifically relating to a real-time control method, device, storage medium, and program product for hydrogen fuel cells. Background Technology

[0002] In recent years, with the application and continuous promotion of hydrogen energy technology, hydrogen fuel cell power generation has developed rapidly worldwide. As an important component of the new energy field, hydrogen fuel cells not only help reduce dependence on fossil fuels but also contribute to environmental sustainability. The long-term reliable operation of hydrogen fuel cells is therefore crucial.

[0003] Currently, the control of hydrogen fuel cell power generation systems involves keeping the fuel cells continuously powered on to meet load demands once it's confirmed that they are operating normally. This method of keeping the fuel cells running continuously for extended periods affects the overall lifespan of the power generation system, resulting in a reduced lifespan for the hydrogen fuel cells themselves. Furthermore, this method is inconsistent with scheduling plans, increasing the loss of output power from the hydrogen fuel cells. Summary of the Invention

[0004] The purpose of this invention is to provide a real-time control method, device, storage medium, and program product for hydrogen fuel cells, in order to solve the problem that the real-time control method of traditional power generation systems does not match the scheduling plan, which increases the loss of hydrogen fuel cell output power.

[0005] To address the aforementioned technical problems, this invention provides a real-time control method for a hydrogen fuel cell, the method comprising:

[0006] The operation of the hydrogen fuel cell is controlled according to the start-stop plan of the hydrogen fuel cell; wherein, the start-stop plan of the hydrogen fuel cell is obtained based on the planned load power: when the planned load power is lower than the lower limit of the safe power generation of the hydrogen fuel cell, the start-stop plan is to shut down; when the planned load power is higher than the lower limit of the safe power generation of the hydrogen fuel cell, the start-stop plan is to start up.

[0007] Furthermore, when the hydrogen fuel cell is in operation after being powered on and meets the power regulation conditions, the power of the hydrogen fuel cell is adjusted in real time; the process of adjusting the power of the hydrogen fuel cell in real time specifically includes:

[0008] 1) Provided that the absolute value of the difference between the current set power and the planned power is not between the upper and lower limits of the hydrogen fuel cell dead zone:

[0009] If the absolute value of the difference is greater than the maximum adjustable step size: if the planned power is greater than the current set power, the set power is adjusted to the current set power plus the value obtained by the maximum adjustable step size; if the planned power is less than the current set power, the set power is adjusted to the current set power minus the value obtained by the maximum adjustable step size.

[0010] If the absolute value of the difference is less than or equal to the maximum adjustable step size: if the planned power is greater than the current set power, the set power is adjusted to the current set power plus the absolute value of the difference between the actual power of the hydrogen fuel cell and the planned power; if the planned power is less than the current set power, the set power is adjusted to the current set power minus the absolute value of the difference between the actual power of the hydrogen fuel cell and the planned power.

[0011] 2) Control the fuel cell to output power according to the adjusted set power. After outputting power, repeat step 1) according to the latest set power until the difference between the current set power and the planned power is between the upper and lower limits of the hydrogen fuel cell dead zone; wherein the lower limit of the hydrogen fuel cell dead zone is less than the upper limit of the hydrogen fuel cell dead zone, and the upper limit of the hydrogen fuel cell dead zone is less than the maximum adjustable step size.

[0012] Furthermore, the process of controlling the fuel cell to output power according to the adjusted set power includes:

[0013] The adjusted set power is compared with the rated power of the hydrogen fuel cell: if the adjusted set power is less than or equal to the rated power of the hydrogen fuel cell, the final set power is set to the adjusted set power; if the adjusted set power is greater than the rated power of the hydrogen fuel cell and the hydrogen fuel cell is in an overload cooling state, the final set power is set to the rated power of the hydrogen fuel cell; if the adjusted set power is greater than the rated power of the hydrogen fuel cell but less than or equal to the safe power generation limit of the hydrogen fuel cell and the hydrogen fuel cell is not in an overload cooling state, the final set power is set to the adjusted set power; if the adjusted set power is greater than the safe power generation limit of the hydrogen fuel cell and the hydrogen fuel cell is not in an overload cooling state, the final set power is set to the safe power generation limit of the hydrogen fuel cell.

[0014] This enables the fuel cell to output power according to the final set power.

[0015] Furthermore, the power adjustment conditions include: the hydrogen fuel cell is in operation, the hydrogen fuel cell is not under maintenance, and the hydrogen storage device is in hydrogen release operation.

[0016] Furthermore, if the hydrogen fuel cell is in operation and the hydrogen storage device is not in hydrogen release operation, a hydrogen release operation command is issued to the hydrogen storage device to adjust the state of the hydrogen storage device to hydrogen release operation.

[0017] To address the aforementioned technical problems, the present invention also provides a computer device, including a processor, which executes a computer program to implement the steps of the hydrogen fuel cell real-time control method described above.

[0018] To address the aforementioned technical problems, the present invention also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the real-time control method for hydrogen fuel cells as described above.

[0019] To address the aforementioned technical problems, the present invention also provides a computer program product, comprising a computer program that, when executed by a processor, implements the steps of the real-time control method for hydrogen fuel cells as described above.

[0020] Its beneficial effects are as follows: This invention is an improved invention. It takes into account the start-up and shutdown requirements of hydrogen fuel cells, and formulates a start-up and shutdown plan for the hydrogen fuel cell based on the planned load power. This prevents the hydrogen fuel cell from being in a continuously running state as in existing technologies. Instead, it considers the upper and lower limits of the safe power generation of the hydrogen fuel cell, and formulates a start-up and shutdown plan based on the relationship between the planned load power and the lower limit of the safe power generation of the hydrogen fuel cell. The basis for formulating this start-up and shutdown plan is: when the planned load power is lower than the lower limit of the safe power generation of the hydrogen fuel cell, the start-up and shutdown plan is to shut down; when the planned load power is higher than the lower limit of the safe power generation of the hydrogen fuel cell, the start-up and shutdown plan is to start up. This solves the problem of increased power loss in hydrogen fuel cell output caused by the inconsistency between the existing real-time control method and the scheduling plan of the power generation system. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating the execution of power on / off actions based on a start / stop plan according to an embodiment of the present invention;

[0022] Figure 2 This is a flowchart of the hydrogen fuel cell power adjustment strategy according to an embodiment of the present invention. Detailed Implementation

[0023] This invention controls the operation of a hydrogen fuel cell based on a start-up and shutdown plan. When the fuel cell is in operation after startup and meets the power regulation conditions, the power of the fuel cell is adjusted in real time. The start-up and shutdown plan is derived from the planned load power: when the planned load power is lower than the lower limit of the safe power generation capacity of the fuel cell, the start-up and shutdown plan is shutdown; when the planned load power is higher than the lower limit of the safe power generation capacity of the fuel cell, the start-up and shutdown plan is startup. This invention formulates the start-up and shutdown plan of the hydrogen fuel cell based on the relationship between the planned load power and the lower limit of the safe power generation capacity of the fuel cell, thereby increasing the start-up and shutdown control process of the fuel cell and compensating for the output power loss of the fuel cell.

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Method Implementation Examples:

[0026] This embodiment of a hydrogen fuel cell real-time control method executes the hydrogen fuel cell start-up and shutdown according to a start-up and shutdown plan, refers to the planned load power, considers power loss and hydrogen fuel cell overload operation, and periodically adjusts the real-time power of the hydrogen fuel cell. The specific control process is as follows:

[0027] Step 1: Develop a start-up and shutdown plan for the hydrogen fuel cell.

[0028] When the planned load power is lower than the safe power generation limit of the hydrogen fuel cell, the start-stop plan is to shut down; when the planned load power is higher than the safe power generation limit of the hydrogen fuel cell, the start-stop plan is to start up.

[0029] Step 2: Execute power on / off actions based on the start / stop plan. For example... Figure 1 As shown, it specifically includes:

[0030] S1: If the start / stop plan is to shut down, then perform the shutdown action; if the start / stop plan is to turn on, then proceed to step S2.

[0031] S2: Determine whether the hydrogen fuel cell is in operation. If it is in operation, perform real-time power adjustment; otherwise, proceed to step S3.

[0032] S3: Determine whether the hydrogen storage device is in hydrogen release operation mode. If so, execute the start-up action and then proceed to step three to perform real-time power adjustment; otherwise, issue a hydrogen release operation command to the hydrogen storage device and then return to step S2.

[0033] Step 3: Based on the results obtained in Step 2, perform real-time power adjustment when the hydrogen fuel cell is not under maintenance.

[0034] like Figure 2 As shown, the power adjustment strategy specifically includes:

[0035] S4: If the absolute value of the difference between the current set power and the planned power is between the upper and lower limits of the hydrogen fuel cell dead zone, no power adjustment is performed; otherwise, if the absolute value of the difference between the current set power and the planned power is greater than the maximum adjustable step size, and the planned power is greater than the current set power, the set power is adjusted to the value obtained by adding the current set power to the maximum adjustable step size; if the planned power is less than the current set power, the set power is adjusted to the value obtained by subtracting the maximum adjustable step size from the current set power; then proceed to step S5.

[0036] If the absolute value of the difference between the current set power and the planned power is less than or equal to the maximum adjustable step size, and the planned power is greater than the current set power, then the set power is adjusted to the current set power plus the absolute value of the difference between the actual power of the hydrogen fuel cell and the planned power; if the planned power is less than the current set power, then the set power is adjusted to the current set power minus the absolute value of the difference between the actual power of the hydrogen fuel cell and the planned power; then proceed to step S5.

[0037] In this regard, considering that the hydrogen fuel cell has a certain power loss after passing through the PCS, the set power is adjusted to the current set power plus or minus the absolute value of the difference between the actual power and the planned power of the hydrogen fuel cell. However, since the set power cannot be directly adjusted to the current set power plus or minus the difference between the actual power and the planned power of the hydrogen fuel cell when the absolute value of this difference is greater than the maximum adjustable step size, the set power is adjusted to the current set power plus or minus the maximum adjustable step size.

[0038] S5: Determine whether the adjusted set power in step S4 is greater than the rated power of the hydrogen fuel cell. If it is not greater, the final set power of the hydrogen fuel cell is the adjusted set power. If the adjusted set power in step S4 is greater than the rated power of the hydrogen fuel cell, then when the hydrogen fuel cell is in an overload cooling state, the final set power of the hydrogen fuel cell is set to the rated power. When the adjusted set power is greater than the rated power of the hydrogen fuel cell and less than or equal to the safe power generation limit of the hydrogen fuel cell, and the hydrogen fuel cell is not in an overload cooling state, the final set power of the hydrogen fuel cell is set to the adjusted set power. If the adjusted set power is greater than the safe power generation limit of the hydrogen fuel cell and the hydrogen fuel cell is not in an overload cooling state, then the final set power is set to the safe power generation limit of the hydrogen fuel cell.

[0039] Step 4: Issue a command based on the final set power obtained in Step 3 to make the hydrogen fuel cell operate at the final set power.

[0040] Step 5: After the hydrogen fuel cell has completed its operation at the final set power, it will return to Step 2 for further real-time power adjustments until the difference between the current set power and the planned power falls between the upper and lower limits of the hydrogen fuel cell's dead zone. The current set power at each adjustment is the final set power from the previous adjustment.

[0041] In this embodiment, when the power of the hydrogen fuel cell can be adjusted, the power is adjusted in real time based on the start-stop plan of the hydrogen fuel cell. Taking into account the upper and lower limits of the dead zone and the upper limit of safe power generation of the hydrogen fuel cell, the power of the hydrogen fuel cell is gradually adjusted until the difference between the set power and the planned power obtained after the final adjustment is between the upper and lower limits of the dead zone of the hydrogen fuel cell; wherein, the current set power at the time of the initial adjustment is the current operating power.

[0042] In summary, the real-time control method for hydrogen fuel cells of this invention not only considers the upper and lower limits of safe power generation of the hydrogen fuel cell and controls its start-up and shutdown according to the start-up and shutdown plan, but also takes into account power loss and overload or cooling conditions of the hydrogen fuel cell. Using a set power value as a benchmark, the power is adjusted in real time according to the planned power and power adjustment strategy. This extends the service life of the hydrogen fuel cell, reduces the output power loss of the fuel cell, and is applicable to hydrogen fuel cell power generation grid-connected systems.

[0043] Computer equipment example:

[0044] A computer device according to the present invention includes a memory, a processor, and an internal bus. The processor and the memory communicate and interact with each other via the internal bus. The memory includes at least one software functional module stored in the memory. The processor executes various functional applications and data processing by running the computer program and module stored in the memory, thereby implementing a real-time control method for a hydrogen fuel cell described in the method embodiments of the present invention. The principle, implementation process, and achievable effects of this method have been fully described in the method embodiments and will not be repeated here.

[0045] Examples of computer-readable storage media:

[0046] This invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements a real-time control method for a hydrogen fuel cell as described in the method embodiments of this invention. The principles, implementation process, and achievable effects of this method have been fully described in the method embodiments and will not be repeated here.

[0047] Example of a computer program product:

[0048] This invention provides a computer program product, comprising a computer program that, when executed by a processor, implements a real-time control method for a hydrogen fuel cell as described in the method embodiments of this invention. The principles, implementation process, and achievable effects of this method have been fully described in the method embodiments and will not be repeated here.

Claims

1. A hydrogen fuel cell real-time control method, characterized by, The method comprises: controlling the hydrogen fuel cell to act according to a start-stop plan of the hydrogen fuel cell; wherein the start-stop plan of the hydrogen fuel cell is obtained according to a load plan power: when the load plan power is lower than a lower limit of a safe power generation of the hydrogen fuel cell, the start-stop plan is shutdown; when the load plan power is higher than the lower limit of the safe power generation of the hydrogen fuel cell, the start-stop plan is startup.

2. The hydrogen fuel cell real-time control method of claim 1, wherein when the hydrogen fuel cell is in a working state after startup and the hydrogen fuel cell meets a power adjustment condition, performing real-time power adjustment on the hydrogen fuel cell; the process of performing real-time power adjustment on the hydrogen fuel cell specifically comprises: 1) in the case that an absolute value of a difference between a current set power and a plan power is not between upper and lower limits of a dead zone of the hydrogen fuel cell: in the case that the absolute value of the difference is greater than a maximum adjustable step: if the plan power is greater than the current set power, the set power is adjusted to a value obtained by adding the maximum adjustable step to the current set power; if the plan power is less than the current set power, the set power is adjusted to a value obtained by subtracting the maximum adjustable step from the current set power; in the case that the absolute value of the difference is less than or equal to the maximum adjustable step: if the plan power is greater than the current set power, the set power is adjusted to a value obtained by adding the absolute value of a difference between an actual power of the hydrogen fuel cell and the plan power to the current set power; if the plan power is less than the current set power, the set power is adjusted to a value obtained by subtracting the absolute value of the difference between the actual power of the hydrogen fuel cell and the plan power from the current set power; 2) controlling the fuel cell to perform power output according to the adjusted set power, and re-executing step 1) according to the latest set power after output until a difference between the current set power and the plan power is between the upper and lower limits of the dead zone of the hydrogen fuel cell; wherein the lower limit of the dead zone of the hydrogen fuel cell is less than the upper limit of the dead zone of the hydrogen fuel cell, and the upper limit of the dead zone of the hydrogen fuel cell is less than the maximum adjustable step.

3. The hydrogen fuel cell real-time control method of claim 2, wherein the process of controlling the fuel cell to perform power output according to the adjusted set power comprises: comparing the adjusted set power with a rated power of the hydrogen fuel cell: if the adjusted set power is less than or equal to the rated power of the hydrogen fuel cell, the final set power is set as the adjusted set power; if the adjusted set power is greater than the rated power of the hydrogen fuel cell and the hydrogen fuel cell is in an overload cooling state, the final set power is set as the rated power of the hydrogen fuel cell; if the adjusted set power is greater than the rated power of the hydrogen fuel cell and less than or equal to an upper limit of safe power generation of the hydrogen fuel cell, and the hydrogen fuel cell is not in the overload cooling state, the final set power is set as the adjusted set power; if the adjusted set power is greater than the upper limit of the safe power generation of the hydrogen fuel cell and the hydrogen fuel cell is not in the overload cooling state, the final set power is set as the upper limit of the safe power generation of the hydrogen fuel cell; making the fuel cell perform power output according to the final set power.

4. The hydrogen fuel cell real-time control method of claim 2, wherein the power adjustment condition comprises: the hydrogen fuel cell is in a running working condition, the hydrogen fuel cell is not in a maintenance state, and a hydrogen storage device is in a hydrogen discharge running state.

5. The hydrogen fuel cell real-time control method of claim 4, wherein If the hydrogen fuel cell is in operation and the hydrogen storage device is not in hydrogen releasing operation, a hydrogen releasing operation instruction is sent to the hydrogen storage device to adjust the state of the hydrogen storage device to the hydrogen releasing operation state.

6. A computer device comprising a processor, characterized in that The processor executes the computer program to implement the steps of the hydrogen fuel cell real-time control method according to any one of claims 1-5.

7. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the hydrogen fuel cell real-time control method according to any one of claims 1-5.

8. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the hydrogen fuel cell real-time control method according to any one of claims 1-5. The computer program is executed by the processor to implement the steps of the hydrogen fuel cell real-time control method according to any one of claims 1-5.

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