Power distribution method, device, medium and product for an electrolytic aluminium system

Abstract

The application provides a power distribution method, device, medium and product of an electrolytic aluminum system. The electrolytic aluminum system comprises an electrolytic aluminum load, a photovoltaic module and an energy storage module. The power distribution method of the electrolytic aluminum system comprises: obtaining preset information of the electrolytic aluminum system; determining power distribution of the electrolytic aluminum load according to the preset information; specifically, comprising judging whether the photovoltaic output power is greater than or equal to the preset minimum allowable power of the electrolytic aluminum load, if yes, controlling the photovoltaic module and the power grid to jointly supply power to the electrolytic aluminum load, and controlling the proportion of the output power of the power grid in the working power of the electrolytic aluminum load to be greater than or equal to a preset threshold, if no, controlling the photovoltaic module, the energy storage module and the power grid to supply power to the electrolytic aluminum load according to the state of charge of the energy storage module and the electricity price information of the power grid. It is ensured that the power grid always provides part of the working power of the electrolytic aluminum load, thereby helping to reduce the influence of photovoltaic module power fluctuation and being beneficial to improving the stability of working under green power supply.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrolytic aluminum power supply, in particular to a power distribution method, device, medium and product of an electrolytic aluminum system. BACKGROUND

[0002] Electrolytic aluminum is the main production method of producing aluminum in modern industry, because electrolytic aluminum needs to consume a large amount of electricity, and thermal power generation is the main source of electricity, plus carbon dioxide is produced in the electrolytic aluminum process due to the reaction, so that the electrolytic aluminum industry production exists a large amount of carbon dioxide emission. With the increasingly high standard of environmental protection of society, how to optimize the production process of electrolytic aluminum is an important challenge for the electrolytic aluminum industry.

[0003] At the same time, based on the purpose of environmental protection, green electricity (renewable energy power generation) technology has also been fully developed in recent years, and green electricity equipment has been widely used. Therefore, the electrolytic aluminum industry production also begins to try to configure green electricity equipment, so as to realize green electricity supply to a certain extent and reduce power consumption. SUMMARY

[0004] An object of the present application is to provide a power distribution method, device, medium and product of an electrolytic aluminum system which helps to ensure the stability of electrolytic aluminum production.

[0005] In particular, the present application provides a power distribution method of an electrolytic aluminum system, the electrolytic aluminum system comprising an electrolytic aluminum load, a photovoltaic module and an energy storage module, wherein the power distribution method of the electrolytic aluminum system comprises:

[0006] obtaining preset information of the electrolytic aluminum system, the preset information comprising a photovoltaic output power of the photovoltaic module, a state of charge of the energy storage module and a power price information of a power grid;

[0007] determining power distribution of the electrolytic aluminum load according to the preset information;

[0008] And the step of determining the power distribution of the electrolytic aluminum load according to the preset information comprises:

[0009] determining whether the photovoltaic output power is greater than or equal to a preset minimum allowable power of the electrolytic aluminum load, if yes, controlling the photovoltaic module and the power grid to supply power to the electrolytic aluminum load together, and controlling the proportion of the output power of the power grid in the working power of the electrolytic aluminum load to be greater than or equal to a preset threshold, if no, controlling at least the power grid among the photovoltaic module, the energy storage module and the power grid to supply power to the electrolytic aluminum load according to the state of charge of the energy storage module and the power price information of the power grid.

[0010] Optionally, the step of determining the power distribution of the electrolytic aluminum load according to the preset information comprises:

[0011] determining whether a preset condition is reached, if yes, re-executing the step of obtaining the preset information of the electrolytic aluminum system, thereby re-determining the power distribution of the electrolytic aluminum load, if no, continuing to work according to the determined power distribution of the electrolytic aluminum load.

[0012] Optionally, the step of controlling the photovoltaic module and the power grid to jointly supply power to the electrolytic aluminum load comprises:

[0013] calculating a preliminary working power of the electrolytic aluminum load according to a preliminary power determination formula;

[0014] determining whether a difference between the preliminary working power and a working power of the electrolytic aluminum load determined last time exceeds a preset difference, if yes, determining the working power of the electrolytic aluminum load this time according to the working power of the electrolytic aluminum load determined last time and the preset difference, if no, taking the preliminary working power as the working power of the electrolytic aluminum load this time, after obtaining the working power of the electrolytic aluminum load this time, determining the power distribution of the photovoltaic module and the power grid according to the working power of the electrolytic aluminum load this time;

[0015] the preliminary power determination formula is P0=P1 / (1-a), wherein P0 is the preliminary working power, P1 is the photovoltaic output power, and a is the preset threshold.

[0016] Optionally, the step of determining the power distribution of the photovoltaic module and the power grid according to the working power of the electrolytic aluminum load this time comprises:

[0017] in the case of determining the working power of the electrolytic aluminum load this time according to the working power of the electrolytic aluminum load determined last time and the preset difference, if the preliminary working power is greater than the working power of the electrolytic aluminum load determined last time, setting the power of the power grid as the working power of the electrolytic aluminum load this time multiplied by the preset threshold and supplementing power by using the photovoltaic module, if the preliminary working power is less than the working power of the electrolytic aluminum load determined last time, supplying the power of the photovoltaic module to the electrolytic aluminum load and supplementing power by using the power grid;

[0018] in the case of taking the preliminary working power as the working power of the electrolytic aluminum load this time, supplying the power of the photovoltaic module to the electrolytic aluminum load and supplementing power by using the power grid.

[0019] Optionally, if the difference between the preliminary working power and the last determined working power of the electrolytic aluminum load exceeds a preset difference and the preliminary working power is greater than the last determined working power of the electrolytic aluminum load,

[0020] Detecting whether the state of charge of the energy storage module is less than 100%, and if so, charging the energy storage module with the remaining power of the photovoltaic module.

[0021] Optionally, the step of controlling at least the power grid among the photovoltaic module, the energy storage module and the power grid to supply power to the electrolytic aluminum load according to the state of charge of the energy storage module and the electricity price information of the power grid comprises:

[0022] Preliminarily setting the working power of the electrolytic aluminum load as a preset working power, the preset working power being greater than a preset minimum allowable power of the electrolytic aluminum load and less than a preset maximum allowable power of the electrolytic aluminum load;

[0023] Determining whether the difference between the preset working power and the last determined working power of the electrolytic aluminum load exceeds a preset difference, and if so, determining the working power of the electrolytic aluminum load this time according to the last determined working power of the electrolytic aluminum load and the preset difference, and if not, taking the preset working power as the working power of the electrolytic aluminum load this time;

[0024] After obtaining the working power of the electrolytic aluminum load this time, determining the power distribution of the photovoltaic module, the energy storage module and the power grid according to the working power of the electrolytic aluminum load this time.

[0025] Optionally, the step of determining the power distribution of the photovoltaic module, the energy storage module and the power grid according to the working power of the electrolytic aluminum load this time comprises:

[0026] Detecting whether the state of charge of the energy storage module is less than a preset minimum state of charge, and if so, supplying power to the electrolytic aluminum load with the photovoltaic module and the power grid, and if not, detecting whether it is in a preset low electricity price period, and if so, supplying power to the electrolytic aluminum load with the photovoltaic module and the power grid, and if not, supplying power to the electrolytic aluminum load with the photovoltaic module, the energy storage module and the power grid.

[0027] Optionally, the power distribution method of the electrolytic aluminum system further comprises:

[0028] Detecting that the state of charge of the energy storage module is less than a preset minimum state of charge, detecting whether the photovoltaic module has remaining power, and if so, charging the energy storage module with the remaining power of the photovoltaic module, and if not, charging the energy storage module with the power grid.

[0029] In another aspect of the present application, a computer device is also provided, comprising a memory, a processor, and a computer executable program stored in the memory and running on the processor, and the processor implements the power distribution method of the aluminum electrolysis system according to any one of the above when executing the computer executable program.

[0030] In another aspect of the present application, a computer readable storage medium is also provided, having a computer executable program stored thereon, and the computer executable program implements the power distribution method of the aluminum electrolysis system according to any one of the above when executed by a processor.

[0031] In another aspect of the present application, a computer program product is also provided, comprising a computer executable program, and the computer executable program implements the power distribution method of the aluminum electrolysis system according to any one of the above when executed by a processor.

[0032] The power distribution method of the aluminum electrolysis system of the present application, by obtaining preset information of the aluminum electrolysis system, determines the power distribution of the aluminum electrolysis load according to the preset information, specifically, judges whether the photovoltaic output power is greater than or equal to the preset minimum allowable power of the aluminum electrolysis load, if yes, controls the photovoltaic module and the power grid to jointly supply power to the aluminum electrolysis load, and controls the proportion of the output power of the power grid in the working power of the aluminum electrolysis load to be greater than or equal to a preset threshold, if no, controls the photovoltaic module, the energy storage module and the power grid to jointly supply power to the aluminum electrolysis load according to the state of charge of the energy storage module and the electricity price information of the power grid. That is to say, in the case that the photovoltaic output power can also meet the preset minimum allowable power of the aluminum electrolysis load, the photovoltaic module and the power grid are still used to jointly supply power to the aluminum electrolysis load, and the proportion of the output power of the power grid in the working power of the aluminum electrolysis load is ensured to be greater than or equal to the preset threshold, that is, it is ensured that the power grid always provides part of the working power of the aluminum electrolysis load, thereby helping to reduce the situation that the working power of the aluminum electrolysis load fluctuates greatly due to the sudden fluctuation of the power of the photovoltaic module when only the photovoltaic module is used to supply power, and helping to improve the stability of the aluminum electrolysis production work under green power supply. In addition, in the case that the photovoltaic output power is less than the preset minimum allowable power, the photovoltaic module, the energy storage module and the power grid are used to jointly supply power to the aluminum electrolysis load, thereby reducing a part of the power consumption of the power grid by using the energy storage module.

[0033] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of specific embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] Some specific embodiments of the present application will be described in detail below with reference to the attached drawings. The same or similar components or parts are designated by the same or similar reference numerals in the drawings. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0035] Figure 1 is a schematic block diagram of an electrolytic aluminum system according to an embodiment of the present application;

[0036] Figure 2 is a schematic flowchart of a power distribution method of an electrolytic aluminum system according to an embodiment of the present application;

[0037] Figure 3 is a schematic flowchart of a power distribution method of an electrolytic aluminum system according to another embodiment of the present application;

[0038] Figure 4 is a partial schematic flowchart of a power distribution method of an electrolytic aluminum system according to another embodiment of the present application;

[0039] Figure 5 is a partial schematic flowchart of a power distribution method of an electrolytic aluminum system according to yet another embodiment of the present application;

[0040] Figure 6 is a schematic diagram of a computer device according to an embodiment of the present application;

[0041] Figure 7 is a schematic diagram of a computer readable storage medium according to an embodiment of the present application;

[0042] Figure 8 is a schematic diagram of a computer program product according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] It should be understood by those skilled in the art that the embodiments described below are only some of the embodiments of the present application, rather than all the embodiments of the present application, and are intended to explain the technical principles of the present application, rather than to limit the protection scope of the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort shall fall within the protection scope of the present application.

[0044] It should be noted that in the description of the present application, each functional module can be a physical module composed of multiple structures, components or electronic elements, or a virtual module composed of multiple programs; each functional module can be a module existing independently of each other, or a module divided by a whole module according to function. It should be understood by those skilled in the art that the constituting mode, implementation mode and positional relationship of each functional module can be changed without departing from the technical principles of the present application, as long as the technical solutions described in the present application can be realized, and therefore all should fall within the protection scope of the present application.

[0045] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a list of executable instructions for implementing logical functions, which can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus or device, such as a computer-based system, a system including a processor or other system that can fetch instructions from an instruction execution system, apparatus or device and execute the instructions, or in conjunction with these instructions execution system, apparatus or device.

[0046] The flowchart provided by the present embodiment is not intended to indicate that the operations of the method will be performed in any particular order, or that all the operations of the method are included in all cases. In addition, the method can include additional operations. Additional changes can be made to the above method within the scope of the technical idea provided by the present embodiment method.

[0047] As shown in Figure 1 In one embodiment, the electrolytic aluminum system includes an electrolytic aluminum load 100, a photovoltaic module 200 and an energy storage module 300. The electrolytic aluminum load 100 is an electrolytic cell for electrolytic aluminum, the photovoltaic module 200 is a photovoltaic panel group for generating electricity using light energy, and the energy storage module 300 is an energy storage battery group. The energy storage module 300 can be charged or discharged. In addition, the electrolytic aluminum load 100 is also powered by a power grid 400. The energy storage module 300 can be charged by the photovoltaic module 200, and can also be charged by the power grid 400, and can supply power to the electrolytic aluminum load 100.

[0048] As shown in Figure 2 In one embodiment, the power distribution method of the electrolytic aluminum system includes:

[0049] In step S201, the preset information of the electrolytic aluminum system is obtained, and the preset information includes the photovoltaic output power of the photovoltaic module, the state of charge of the energy storage module and the price information of the power grid. The photovoltaic output power of the photovoltaic module can be obtained by a photovoltaic power calculation formula, and the photovoltaic power calculation formula is as follows:

[0050] ;

[0051] wherein, represents the output power of the photovoltaic module, represents the power generation efficiency of the photovoltaic module, the photovoltaic module product parameter can be pre-stored in the program, S represents the photovoltaic panel area, which is directly obtained after the photovoltaic module is built, and can be pre-stored in the program, represents the light intensity irradiated on the photovoltaic panel at t time, which is detected by a light intensity sensor, represents the temperature coefficient, the photovoltaic module product parameter can be pre-stored in the program, represents the temperature of the surface of the photovoltaic panel at t time, which can be detected by a temperature sensor, represents the standard temperature under the normal operating condition of the photovoltaic module, which is generally 25 degrees Celsius.

[0052] the state of charge of the energy storage module, that is, the percentage of the remaining power of the energy storage module, and the electricity price information of the power grid, that is, the electricity price at the current time of the power grid.

[0053] The step of determining the power distribution of the electrolytic aluminum load according to the preset information is executed, specifically, the step includes:

[0054] Step S202, determine whether the photovoltaic output power is greater than or equal to the preset minimum allowable power of the electrolytic aluminum load, if yes, execute step S203, if no, execute step S204. Specifically, the working power range of the electrolytic aluminum load is pre-configured, that is, the working power of the electrolytic aluminum load can fluctuate within the working power range, the minimum value of the working power range is the preset minimum allowable power, and the maximum value of the working power range is the preset maximum allowable power.

[0055] Step S203, control the photovoltaic module and the power grid to supply power to the electrolytic aluminum load together, and control the proportion of the output power of the power grid in the power of the electrolytic aluminum load to be greater than or equal to a preset threshold. Specifically, if the photovoltaic output power is greater than or equal to the preset minimum allowable power, that is, even if only the output power of the photovoltaic module is used, the preset minimum allowable power of the electrolytic aluminum load can be met, so the energy storage module is not needed to supply power to the electrolytic aluminum load. However, the photovoltaic module and the power grid must be used to supply power to the electrolytic aluminum load together, and the proportion of the output power of the power grid in the power of the electrolytic aluminum load must be greater than or equal to the preset threshold. The preset threshold can be any value in 10%~20%.

[0056] Step S204, control the photovoltaic module, the energy storage module and the power grid to supply power to the electrolytic aluminum load together according to the state of charge of the energy storage module and the electricity price information of the power grid. Specifically, if the photovoltaic output power is less than the preset minimum allowable power, that is, the photovoltaic output power is weakened or has no output power, then the photovoltaic module, the energy storage module and the power grid are used to supply power to the electrolytic aluminum load together, so that the energy storage module reduces a part of the power consumption of the power grid.

[0057] In this embodiment, the steps of obtaining preset information about the electrolytic aluminum system and determining the power allocation of the electrolytic aluminum load based on this preset information specifically involve determining whether the photovoltaic output power is greater than or equal to the preset minimum allowable power of the electrolytic aluminum load. If so, the photovoltaic module and the grid are controlled to jointly supply power to the electrolytic aluminum load, and the proportion of the grid's output power in the electrolytic aluminum load's operating power is controlled to be greater than or equal to a preset threshold. If not, the photovoltaic module, energy storage module, and grid are controlled to jointly supply power to the electrolytic aluminum load based on the energy storage module's charge and the grid's electricity price information. In other words, even when the photovoltaic output power alone can meet the preset minimum allowable power of the electrolytic aluminum load, the photovoltaic module and the grid are still used to jointly supply power to the electrolytic aluminum load, ensuring that the proportion of the grid's output power in the electrolytic aluminum load's operating power is greater than or equal to a preset threshold. This ensures that the grid always provides a portion of the electrolytic aluminum load's operating power, thereby helping to reduce the occurrence of large fluctuations in the electrolytic aluminum load's operating power due to sudden fluctuations in the photovoltaic module's power when only the photovoltaic module is used for power supply. This is beneficial for improving the stability of electrolytic aluminum production under green electricity supply. In addition, when the photovoltaic output power is less than the preset minimum allowable power, the photovoltaic module, energy storage module and grid are used together to supply power to the electrolytic aluminum load, thereby reducing a portion of the grid power consumption by utilizing the energy storage module.

[0058] like Figure 3 As shown, in one embodiment, the power distribution method of the aluminum electrolysis system includes:

[0059] Step S301: Obtain preset information of the electrolytic aluminum system, including the photovoltaic output power of the photovoltaic module, the charge of the energy storage module, and the electricity price information of the power grid.

[0060] Step S302: Determine the power allocation of the electrolytic aluminum load based on preset information. See the preceding text for details.

[0061] Step S303: Determine whether the preset conditions have been met. If yes, return to step S301, which means re-execute the step of obtaining the preset information of the electrolytic aluminum system to redetermine the power distribution of the electrolytic aluminum load. If no, proceed to step S304. Specifically, the preset conditions include reaching a preset cycle time, that is, whether the working time of the current power distribution method has reached the preset cycle time. For example, the preset cycle time can be 1 minute, 3 minutes, 5 minutes, etc.

[0062] Step S304: Continue operating according to the determined power allocation for the electrolytic aluminum load. Specifically, if the preset conditions are not met, continue operating according to the currently determined power allocation for the electrolytic aluminum load.

[0063] In the scheme of the embodiment, by judging whether the preset condition is reached after determining the power distribution of the electrolytic aluminum load according to the preset information, in the case that the preset condition is reached, the step of obtaining the preset information of the electrolytic aluminum system is re-executed, so as to re-determine the power distribution of the electrolytic aluminum load, that is, the power distribution of the electrolytic aluminum load is periodically re-determined. Because the photovoltaic module power is high in volatility, by periodically re-determining the power distribution of the electrolytic aluminum load, it is beneficial to further reduce the case that the working power of the electrolytic aluminum load fluctuates greatly due to the sudden fluctuation of the photovoltaic module power.

[0064] As shown in Figure 4 In one embodiment, the step of controlling the photovoltaic module and the power grid to jointly supply power to the electrolytic aluminum load comprises:

[0065] Step S401, the initial working power of the electrolytic aluminum load is calculated according to the initial power determination formula. Specifically, the initial power determination formula is: P0=P1 / (1-a), wherein P0 is the initial working power, P1 is the photovoltaic output power, and a is a preset threshold.

[0066] Step S402, it is judged whether the difference between the initial working power and the working power of the electrolytic aluminum load determined last time exceeds the preset difference value, if yes, step S403 is executed, if not, step S404 is executed. Specifically, whether the initial working power is greater than the working power of the electrolytic aluminum load determined last time, and the result value of the initial working power minus the working power of the electrolytic aluminum load determined last time is greater than or equal to the preset difference value, or the initial working power is less than the working power of the electrolytic aluminum load determined last time, and the result value of the working power of the electrolytic aluminum load determined last time minus the initial working power is greater than or equal to the preset difference value, that is, the difference between the initial working power and the working power of the electrolytic aluminum load determined last time exceeds the preset difference value.

[0067] Step S403, determining the working power of the electrolytic aluminum load according to the working power of the electrolytic aluminum load determined last time and the preset difference value. Specifically, in the case that the difference between the preliminary working power and the working power of the electrolytic aluminum load determined last time exceeds the preset difference value, if the preliminary working power is greater than the working power of the electrolytic aluminum load determined last time, the working power of the electrolytic aluminum load is set to the working power of the electrolytic aluminum load determined last time plus the preset difference value, and meanwhile, if the working power of the electrolytic aluminum load determined last time plus the preset difference value exceeds the preset maximum allowable power, the working power of the electrolytic aluminum load is set to the preset maximum allowable power. If the preliminary working power is less than the working power of the electrolytic aluminum load determined last time, the working power of the electrolytic aluminum load is set to the working power of the electrolytic aluminum load determined last time minus the preset difference value, and meanwhile, if the working power of the electrolytic aluminum load determined last time minus the preset difference value is less than the preset minimum allowable power, the working power of the electrolytic aluminum load is set to the preset minimum allowable power.

[0068] Step S404, taking the preliminary working power as the working power of the electrolytic aluminum load. Specifically, in the case that the difference between the preliminary working power and the working power of the electrolytic aluminum load determined last time does not exceed the preset difference value, the working power of the electrolytic aluminum load is set to the calculated preliminary working power.

[0069] Step S405, after obtaining the working power of the electrolytic aluminum load, determining the power distribution of the photovoltaic module and the power grid according to the working power of the electrolytic aluminum load.

[0070] Specifically, in the case that the working power of the electrolytic aluminum load is determined according to the working power of the electrolytic aluminum load determined last time and the preset difference value:

[0071] If the preliminary working power is greater than the working power of the electrolytic aluminum load determined last time, the power of the power grid is set to the working power of the electrolytic aluminum load multiplied by the preset threshold value and supplemented by the photovoltaic module. Specifically, at this time, the working power of the electrolytic aluminum load is the working power of the electrolytic aluminum load determined last time plus the preset difference value or the preset maximum allowable power, that is, the power output of the power grid is obtained by multiplying the working power of the electrolytic aluminum load by the preset threshold value, and then the photovoltaic module is used for power supplement. Because the photovoltaic module can meet the preliminary working power, it can certainly meet the working power of the electrolytic aluminum load obtained by adding the preset difference value to the working power of the electrolytic aluminum load determined last time.

[0072] If the preliminary working power is less than the working power of the last determined electrolytic aluminum load, the power of the photovoltaic module is entirely supplied to the electrolytic aluminum load and power is supplemented by the power grid. Specifically, the working power of the electrolytic aluminum load this time is the working power of the last determined electrolytic aluminum load minus the preset difference value or the preset minimum allowable power, and is greater than the preliminary working power, so after the power of the photovoltaic module is entirely supplied to the electrolytic aluminum load, power is still supplemented by the power grid, and the power ratio of the power grid is definitely greater than the preset threshold.

[0073] Further, in the case where the preliminary working power is taken as the working power of the electrolytic aluminum load this time, the power of the photovoltaic module is entirely supplied to the electrolytic aluminum load and power is supplemented by the power grid. Specifically, the power of the photovoltaic module is distributed according to the power distribution mode that the power grid output ratio is the preset threshold and the photovoltaic module output ratio is the remaining ratio.

[0074] In the scheme of the embodiment, the preliminary working power of the electrolytic aluminum load is calculated according to the preliminary power determination formula, in the case where the difference between the preliminary working power and the working power of the last determined electrolytic aluminum load exceeds the preset difference value, the working power of the electrolytic aluminum load this time is determined according to the working power of the last determined electrolytic aluminum load and the preset difference value, in the case where the difference between the preliminary working power and the working power of the last determined electrolytic aluminum load does not exceed the preset difference value, the preliminary working power is taken as the working power of the electrolytic aluminum load this time, and after the working power of the electrolytic aluminum load this time is obtained, the power distribution of the photovoltaic module and the power grid is determined according to the working power of the electrolytic aluminum load this time. That is, by configuring the working power of the electrolytic aluminum load to be floating in the mode of power supply by the photovoltaic module, it is beneficial to more fully consume the photovoltaic power generation according to the power generation of the photovoltaic module, and to realize full utilization of the photovoltaic module. At the same time, on the basis of fully consuming the power generation of the photovoltaic module, it is avoided that the short-time power change rate of the electrolytic aluminum load is too large to cause adverse effects on the electrolytic aluminum process.

[0075] Furthermore, in this embodiment, if the difference between the initial operating power and the previously determined operating power of the electrolytic aluminum load exceeds a preset difference and the initial operating power is greater than the previously determined operating power of the electrolytic aluminum load, it is detected whether the charge of the energy storage module is less than 100%. If so, the remaining power of the photovoltaic module is used to charge the energy storage module. Specifically, if the difference between the initial operating power and the previously determined operating power of the electrolytic aluminum load exceeds a preset difference and the initial operating power is greater than the previously determined operating power of the electrolytic aluminum load, the current determined operating power of the electrolytic aluminum load is definitely less than the initial operating power. Therefore, multiplying by (1-a) (1 minus the preset threshold mentioned above) is definitely less than the photovoltaic output power, so the photovoltaic module will have remaining power. At this time, if the charge of the energy storage module is less than 100%, the remaining power of the photovoltaic module is used to charge the energy storage module, thereby making fuller use of photovoltaic power generation.

[0076] like Figure 5 As shown, in one embodiment, the step of controlling the photovoltaic module, energy storage module, and power grid to jointly supply power to the electrolytic aluminum load based on the energy storage module's charge and the grid's electricity price information includes:

[0077] Step S501: Initially set the operating power of the electrolytic aluminum load to a preset operating power. The preset operating power is greater than the preset minimum allowable power of the electrolytic aluminum load and less than the preset maximum allowable power of the electrolytic aluminum load. Specifically, if the photovoltaic output power of the photovoltaic module is less than the preset minimum allowable power, it means that the photovoltaic module generates very little or no power, that is, most of the power needs to be supplied by the grid. Since the grid power is stable and there is no need to consider fluctuations, it is directly set to the preset operating power.

[0078] Step S502: Determine whether the difference between the preset working power and the previously determined working power of the electrolytic aluminum load exceeds a preset difference. If yes, proceed to step S503; otherwise, proceed to step S504. Specifically, regardless of whether the preset working power is greater than the previously determined working power of the electrolytic aluminum load, and the result of subtracting the previously determined working power from the preset working power is greater than or equal to the preset difference, or whether the preset working power is less than the previously determined working power of the electrolytic aluminum load, and the result of subtracting the previously determined working power from the preset working power is greater than or equal to the preset difference, the difference between the preset working power and the previously determined working power of the electrolytic aluminum load exceeds the preset difference.

[0079] Step S503, determining the working power of the electrolytic aluminum load according to the working power of the electrolytic aluminum load determined last time and the preset difference. Specifically, in the case that the difference between the preset working power and the working power of the electrolytic aluminum load determined last time exceeds the preset difference, if the preset working power is greater than the working power of the electrolytic aluminum load determined last time, the working power of the electrolytic aluminum load is set to the working power of the electrolytic aluminum load determined last time plus the preset difference. If the preset working power is less than the working power of the electrolytic aluminum load determined last time, the working power of the electrolytic aluminum load is set to the working power of the electrolytic aluminum load determined last time minus the preset difference.

[0080] Step S504, taking the preset working power as the working power of the electrolytic aluminum load. Specifically, in the case that the difference between the preset working power and the working power of the electrolytic aluminum load determined last time does not exceed the preset difference, the working power of the electrolytic aluminum load is set to the preset working power.

[0081] Step S505, after obtaining the working power of the electrolytic aluminum load, determining the power distribution of the photovoltaic module, the energy storage module and the power grid according to the working power of the electrolytic aluminum load.

[0082] Specifically, this step includes detecting whether the state of charge of the energy storage module is less than the preset minimum state of charge. Specifically, if the state of charge of the energy storage module is too small, discharging will seriously damage the energy storage module, so first detect whether the state of charge of the energy storage module is less than the preset minimum state of charge. If yes, use the photovoltaic module and the power grid to supply power to the electrolytic aluminum load, that is, do not use the energy storage module to supply power to the electrolytic aluminum load, but only use the photovoltaic module and the power grid to supply power to the electrolytic aluminum load. If no, detect whether it is in the preset low electricity price period, that is, detect whether the electricity price of this period is lower than the preset electricity price. If yes, use the photovoltaic module and the power grid to supply power to the electrolytic aluminum load. If the electricity price is low, there is no need to use the energy storage module to supply power to the electrolytic aluminum load. If no, use the photovoltaic module, the energy storage module and the power grid to supply power to the electrolytic aluminum load. If the electricity price is high, the energy storage module also supplies power to the electrolytic aluminum load to reduce part of the electricity purchase cost. Specifically, the output power of the energy storage module can be a set rated value, or can be calculated according to the current state of charge and the preset period of time, so that the state of charge of the energy storage module is greater than or equal to the preset minimum state of charge after the energy storage module supplies power for the preset period of time.

[0083] In the scheme of the embodiment, the working power of the electrolytic aluminum load is set as a preset working power, in a case where a difference between the preset working power and the working power of the electrolytic aluminum load determined last time exceeds a preset difference, the working power of the electrolytic aluminum load this time is determined according to the working power of the electrolytic aluminum load determined last time and the preset difference, in a case where the difference between the preset working power and the working power of the electrolytic aluminum load determined last time does not exceed the preset difference, the preset working power is taken as the working power of the electrolytic aluminum load this time, after the working power of the electrolytic aluminum load this time is obtained, the power distribution of the photovoltaic module, the energy storage module and the power grid is determined according to the working power of the electrolytic aluminum load this time. Because the output power of the photovoltaic module is small, the uncertainty of the photovoltaic module increases, and the photovoltaic module can no longer generate power, that is, most of the power supply output needs to be completed by the power grid, and the power supply of the power grid is relatively stable, so there is no need to use the fluctuation range any more, the working power of the electrolytic aluminum load is set as the preset working power or gradually becomes the preset working power, so that the appropriate electrolytic aluminum efficiency is ensured and the stability of the electrolytic aluminum work is ensured. At the same time, under the condition of meeting the requirements, the energy storage module is used to participate in the power supply of the electrolytic aluminum load, and a part of the power purchase cost of the power grid is reduced.

[0084] It should be noted that, in a case where the photovoltaic module does not generate power, the photovoltaic module and the power grid are used to supply power to the electrolytic aluminum load, or only the power grid is used to supply power to the electrolytic aluminum load, and the photovoltaic module, the energy storage module and the power grid are used to supply power to the electrolytic aluminum load, or the energy storage module and the power grid are used to supply power to the electrolytic aluminum load.

[0085] In one embodiment, the power distribution method of the electrolytic aluminum system further comprises:

[0086] In a case where the charge amount of the energy storage module is detected to be less than a preset minimum charge amount, whether the photovoltaic module has residual power is detected, specifically, the case where the photovoltaic module has residual power is that the difference between the preliminary working power and the working power of the electrolytic aluminum load determined last time exceeds the preset difference and the preliminary working power is greater than the working power of the electrolytic aluminum load determined last time, if yes, the residual power of the photovoltaic module is used to charge the energy storage module, if no, the power grid is used to charge the energy storage module, so as to avoid that the energy storage module does not have enough charge amount to deal with the sudden situation.

[0087] The embodiment also provides a computer device and a computer readable storage medium. Figure 6 FIG. 1 is a schematic diagram of a computer device 10 according to an embodiment of the present application. Figure 7 FIG. 2 is a schematic diagram of a computer readable storage medium 20 according to an embodiment of the present application.

[0088] The computer device 10 can include a memory 110, a processor 120, and a computer executable program 11 stored on the memory 110 and running on the processor 120, and the processor 120 implements the power distribution method of the aluminum electrolysis system of any of the above embodiments when executing the computer executable program 11.

[0089] The computer readable storage medium 20 has the computer executable program 11 stored thereon, and the computer executable program 11 implements the power distribution method of the aluminum electrolysis system of any of the above embodiments when executed by the processor.

[0090] The embodiment also provides a computer program product. Figure 8 The computer program product 30 is a schematic diagram of the computer program product 30 according to an embodiment of the present application. The computer program product 30 includes the computer executable program 11, and the computer executable program 11 implements any of the above power distribution methods of the aluminum electrolysis system when executed by the processor 120.

[0091] Specifically, the computer executable program 11 for executing the operation of the present application can be assembly instructions, instruction set architecture (ISA) instructions, computer instructions, computer related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0092] For the description of the embodiment, the computer readable storage medium 20 can be any device that can contain, store, communicate, propagate or transport programs for use by or in connection with an instruction execution system, apparatus or device. More specific examples (non-exhaustive list) of computer readable medium include the following: electrical connections having one or more wires (electronic devices), portable computer diskettes (magnetic devices), random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memories), fiber optic devices, and portable compact disk read-only memories (CDROM). In addition, the computer readable storage medium 20 can even be paper or other suitable medium on which the program is printed, because the program can be electronically obtained, for example, by optical scanning of the paper or other medium, followed by electronic conversion, editing, interpretation or processing, if necessary, in other suitable ways, and then stored in a computer memory.

[0093] It should be understood that parts of the present application can be realized in hardware, software, firmware or a combination thereof. In the above embodiments, a plurality of steps or methods can be realized by software or firmware stored in the memory and executed by a suitable instruction execution system.

[0094] The computer device 10 can be, for example, a server, a desktop computer, a notebook computer, a tablet computer, or a smartphone. In some examples, the computer device 10 can be a cloud harvesting node. The computer device 10 can be described in the general context of computer system-executable instructions, such as program modules, being executed by a computer system. Generally, program modules can include routines, programs, objects, components, logic, data structures, and so on that perform particular tasks or implement particular abstract data types. The computer device 10 can be practiced in a distributed cloud harvesting environment with remote processing devices that are linked through a communications network. In a distributed cloud harvesting environment, program modules can be located in local or remote system storage media including memory storage devices.

[0095] The computer device 10 can include a processor 120 adapted to execute instructions stored in memory 110, which provides instructions to operations of the stored instructions during operation. The processor 120 can be a single core processor, multi-core processor, processing cluster, or any number of other configurations. The memory 110 can include random access memory (RAM), read only memory, flash memory, or any other suitable memory systems.

[0096] The processor 120 can be connected through a system interconnect (e.g., PCI, PCI-Express, etc.) to an I / O interface adapted to connect the computer device 10 to one or more I / O devices (input / output devices). The I / O devices can include, for example, a keyboard and a pointing device, where the pointing device can include a touchpad or touchscreen, among others. The I / O devices can be built-in components of the computer device 10, or can be devices externally connected to the computer device.

[0097] The processor 120 can also be linked through the system interconnect to a display interface adapted to connect the computer device 10 to a display device. The display device can include a display screen that is a built-in component of the computer device 10. The display device can also include a computer monitor, television, or projector, among others, that is externally connected to the computer device 10. Further, a network interface controller (NIC) can be adapted to connect the computer device 10 to a network through the system interconnect. In some embodiments, the NIC can use any suitable interface or protocol, such as Internet Small Computer Systems Interface, among others, to transfer data. The network can be a cellular network, a radio network, a wide area network (WAN), a local area network (LAN), or the Internet, among others. Remote devices can be connected to the computer device through the network.

[0098] At this point, those skilled in the art will appreciate that although specific exemplary embodiments of the application have been described herein, the present application also encompasses many other variations or modifications in accordance with the principles of the application as set forth above. Accordingly, the scope of the present application should be understood to include all such variations and modifications.

Claims

1. A method of power distribution for an aluminum electrolysis system, the aluminum electrolysis system comprising an aluminum electrolysis load, a photovoltaic module, and an energy storage module, wherein, The power distribution method of the electrolytic aluminum system comprises: obtaining preset information of the electrolytic aluminum system, the preset information comprising photovoltaic output power of the photovoltaic module, state of charge of the energy storage module and electricity price information of the power grid; determining power distribution of the electrolytic aluminum load according to the preset information; and the step of determining the power distribution of the electrolytic aluminum load according to the preset information comprises: judging whether the photovoltaic output power is greater than or equal to preset minimum allowable power of the electrolytic aluminum load, if yes, controlling the photovoltaic module and the power grid to jointly supply power to the electrolytic aluminum load, and controlling the proportion of output power of the power grid in working power of the electrolytic aluminum load to be greater than or equal to a preset threshold, if no, controlling at least the power grid among the photovoltaic module, the energy storage module and the power grid to supply power to the electrolytic aluminum load according to the state of charge of the energy storage module and the electricity price information of the power grid; the step of controlling the photovoltaic module and the power grid to jointly supply power to the electrolytic aluminum load comprises: calculating preliminary working power of the electrolytic aluminum load according to a preliminary power determination formula; judging whether the difference between the preliminary working power and the working power of the electrolytic aluminum load determined last time exceeds a preset difference, if yes, determining working power of the electrolytic aluminum load this time according to the working power of the electrolytic aluminum load determined last time and the preset difference, if no, taking the preliminary working power as the working power of the electrolytic aluminum load this time, and determining power distribution of the photovoltaic module and the power grid according to the working power of the electrolytic aluminum load this time; the preliminary power determination formula is P0=P1 / (1-a), wherein P0 is the preliminary working power, P1 is the photovoltaic output power, and a is the preset threshold; the step of determining power distribution of the photovoltaic module and the power grid according to the working power of the electrolytic aluminum load this time comprises: in the case of determining the working power of the electrolytic aluminum load this time according to the working power of the electrolytic aluminum load determined last time and the preset difference, if the preliminary working power is greater than the working power of the electrolytic aluminum load determined last time, setting power of the power grid as working power of the electrolytic aluminum load this time multiplied by the preset threshold and supplementing power with the photovoltaic module, if the preliminary working power is less than the working power of the electrolytic aluminum load determined last time, supplying power of the photovoltaic module to the electrolytic aluminum load and supplementing power with the power grid; in the case of taking the preliminary working power as the working power of the electrolytic aluminum load this time, supplying power of the photovoltaic module to the electrolytic aluminum load and supplementing power with the power grid; the step of controlling at least the power grid among the photovoltaic module, the energy storage module and the power grid to supply power to the electrolytic aluminum load according to the state of charge of the energy storage module and the electricity price information of the power grid comprises: detecting whether the state of charge of the energy storage module is less than a preset minimum state of charge, if yes, using the photovoltaic module and the power grid to supply power to the aluminum electrolysis load, if no, detecting whether it is in a preset low electricity price period, if yes, using the photovoltaic module and the power grid to supply power to the aluminum electrolysis load, if no, using the photovoltaic module, the energy storage module and the power grid to supply power to the aluminum electrolysis load.

2. The power distribution method of an aluminum electrolysis system according to claim 1, wherein, The step of determining the power distribution of the aluminum electrolysis load according to the preset information comprises: determining whether a preset condition is reached, if yes, re-executing the step of obtaining the preset information of the aluminum electrolysis system, thereby re-determining the power distribution of the aluminum electrolysis load, if no, continuing to work according to the determined power distribution of the aluminum electrolysis load; The preset condition comprises reaching a preset period of time.

3. The power distribution method of an aluminum electrolysis system according to claim 1, wherein, In the condition that the difference between the preliminary working power and the last determined working power of the aluminum electrolysis load exceeds a preset difference and the preliminary working power is greater than the last determined working power of the aluminum electrolysis load, detecting whether the state of charge of the energy storage module is less than 100%, if yes, using the remaining power of the photovoltaic module to charge the energy storage module.

4. The power distribution method of an aluminum electrolysis system according to claim 2, wherein, The step of controlling at least the power grid among the photovoltaic module, the energy storage module and the power grid to supply power to the aluminum electrolysis load according to the state of charge of the energy storage module and the electricity price information of the power grid comprises: preliminarily setting the working power of the aluminum electrolysis load as a preset working power, the preset working power being greater than a preset minimum allowable power of the aluminum electrolysis load and less than a preset maximum allowable power of the aluminum electrolysis load; determining whether the difference between the preset working power and the last determined working power of the aluminum electrolysis load exceeds a preset difference, if yes, determining the working power of the aluminum electrolysis load this time according to the last determined working power of the aluminum electrolysis load and the preset difference, if no, taking the preset working power as the working power of the aluminum electrolysis load this time; after obtaining the working power of the aluminum electrolysis load this time, determining the power distribution of the photovoltaic module, the energy storage module and the power grid according to the working power of the aluminum electrolysis load this time.

5. The power distribution method of an aluminum electrolysis system according to claim 1, wherein, Further comprising: detecting that the state of charge of the energy storage module is less than a preset minimum state of charge, detecting whether the photovoltaic module has remaining power, if yes, using the remaining power of the photovoltaic module to charge the energy storage module, if no, using the power grid to charge the energy storage module.

6. A computer device, comprising: comprises a memory, a processor and a computer executable program stored on the memory and running on the processor, and the processor implements the power distribution method of the aluminum electrolysis system according to any one of claims 1 to 5 when executing the computer executable program.

7. A computer-readable storage medium, characterized in that, having a computer executable program stored thereon, the computer executable program being executed by a processor to implement the power distribution method of the aluminum electrolysis system according to any one of claims 1 to 5.

8. A computer program product, characterised in that, comprising a computer executable program, the computer executable program being executed by a processor to implement the power distribution method of the aluminum electrolysis system according to any one of claims 1 to 5.

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