CN118563365A - Electrolytic cell array cooperative control method and device, electronic equipment and storage medium - Google Patents
Electrolytic cell array cooperative control method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The application provides a cooperative control method and device for an electrolytic cell array, electronic equipment and a storage medium, and relates to the technical field of new energy hydrogen production. The cooperative control method of the electrolytic cell array comprises the following steps: acquiring group operation data of an electrolytic cell group, an overall power instruction P sum of an electrolytic cell array and individual operation data of each electrolytic cell in the electrolytic cell group; determining an addition and subtraction group threshold value of the electrolytic cell group based on the group operation data and P sum so as to determine an addition and subtraction group mode and a corresponding target electrolytic cell group; determining a total operating power difference based on the group operating data and P sum to determine a group power split value P i for the target group of cells; and determining a single power distribution value of each electrolytic cell based on the P i and the individual operation data so as to control each electrolytic cell to operate according to the corresponding single power distribution value. The application realizes flexible tracking of the hydrogen production side under the condition of rapid fluctuation of the power generation power, and avoids frequent start and stop of the electrolytic tank.
Description
Technical Field
The application relates to the technical field of new energy hydrogen production, in particular to a cooperative control method and device for an electrolytic cell array, electronic equipment and a storage medium.
Background
The generation of new energy sources such as wind energy, solar energy and the like has intermittence and instability, and the technology for producing hydrogen by electrolyzing water can utilize the electric power generated by the new energy sources to produce hydrogen. The hydrogen production mode has the advantages of environmental protection, zero carbon emission and the like, and is the hydrogen production mode with the most potential under the background of double carbon. However, the new energy power generation is greatly influenced by natural environment, randomness and intermittence exist, and in order to realize dynamic balance of source network charge storage in the new energy hydrogen production system, a multi-electrolysis-cell combined operation strategy is needed to distribute power of each electrolysis cell, and flexible tracking of the hydrogen production side is ensured under the condition that the power generation rapidly fluctuates. Along with the gradual landing of large new energy hydrogen production projects, the hydrogen production side process gradually adopts the design scheme of a plurality of groups of electrolytic tanks, and each group adopts a plurality of electrolytic tanks to carry out the structure of a set of separation and purification device
In the related technology, the grouping operation condition of the electrolytic cells cannot be considered in the multi-electrolytic cell combined operation strategy, the number of the electrolytic cells in the operation, hot standby and cold standby states is simply calculated in the existing operation strategy when power distribution is carried out, and the rotation of the electrolytic cell states is carried out according to a fixed period in the power distribution, so that the frequent start and stop of part of electrolytic cells during hydrogen production by the conventional multi-electrolytic cell combined operation affect the service life of the electrolytic cells. In addition, for the electrolytic tank, the lifting load has speed limitation, and the adjusting capability of multiple electrolytic tanks cannot be fully utilized in the related art, so that the response speed of a power command is slow; meanwhile, the power value of the single electrolytic tank is directly output after being distributed, the middle process of lifting the load of the electrolytic tank is not considered, so that the total running power of the electrolytic tank fluctuates in a large range in the changing process, and the overall balance of the hydrogen production system is not facilitated.
Disclosure of Invention
The application aims to provide a cooperative control method, a cooperative control device, electronic equipment and a storage medium for an electrolytic cell array, which can consider the grouped operation condition of electrolytic cells, and perform corresponding operation power setting for each electrolytic cell, so that the state of the electrolytic cell is reasonably rotated, and frequent start and stop of the electrolytic cell are avoided. Meanwhile, the adjusting capability of multiple electrolytic tanks can be fully utilized, the power command is fast corresponding, the large-range fluctuation of the total running power of the electrolytic tank in the process of lifting loads of the electrolytic tank is avoided, and the overall balance of the hydrogen production system is improved.
According to an aspect of the present application, there is provided an electrolytic cell array cooperative control method, including: acquiring group operation data of an electrolytic cell group, an overall power instruction P sum of an electrolytic cell array and individual operation data of each electrolytic cell in the electrolytic cell group; determining an addition and subtraction group threshold value of the electrolytic cell group based on the group operation data and P sum so as to determine an addition and subtraction group mode and a corresponding target electrolytic cell group; determining a total operating power difference based on the group operating data and P sum to determine a group power split value P i for the target group of cells; and determining a single power distribution value of each electrolytic cell based on the P i and the individual operation data so as to control each electrolytic cell to operate according to the corresponding single power distribution value.
According to some embodiments, the aforesaid set of operating data comprises the number of sets of cells in operation, the lower power limit of each set of cells, the overload power of each set of cells; the addition and subtraction group threshold value comprises a subtraction group threshold value and an addition group threshold value; wherein, based on the group operation data and P sum, determining an addition and subtraction group threshold value of the electrolytic cell group to determine an addition and subtraction group mode and a corresponding target electrolytic cell group, comprising: when P sum is smaller than the group reduction threshold value, reducing the number of the electrolytic cell groups to determine a first target electrolytic cell group, setting P i of the closed electrolytic cell group to 0 to acquire group operation data of the first target electrolytic cell group and carrying out group power distribution; or when P sum is larger than the grouping threshold value, increasing the number of the electrolytic cell groups to determine a second target electrolytic cell group, setting P i of the opened electrolytic cell group as the lowest operation load of the newly opened electrolytic cell group to acquire group operation data of the second target electrolytic cell group and performing group power distribution; or when P sum is larger than or equal to the minus group threshold value and smaller than or equal to the plus group threshold value, determining the number of the electrolytic tank groups as a third target electrolytic tank group number, and carrying out group power distribution.
According to some embodiments, further comprising sequentially setting group numbers for the target cell groups; initializing plan opening group numbers and plan closing group numbers to be 1 respectively; setting the cycle judgment times as N, judging the working state of a target electrolytic cell group with the same group number as the planned opening group number, wherein N is the total group number of the electrolytic cell group; when the working state is a first state which is not operated, has no fault and is in an overhauling state, the cycle is jumped out; or when the current state is not the first state, adding 1 to the planned opening group number, entering the next cycle until the working state is the first state, and determining that the planned opening group number at the moment is the target opening group number so as to determine the group number of the newly opened electrolytic cell group; when the planned open group number is larger than N in the circulation process, subtracting N from the planned close group number and then carrying out state judgment; setting the cycle judgment times as N, judging the working state of the target electrolytic cell group with the same group number as the planned group number, and jumping out of the cycle when the working state is a second state of operation, no fault and maintenance; or when the electrolytic cell group is in the non-second state, adding 1 to the planned closing group number, entering the next cycle until the working state is the second state, and determining that the planned closing group number at the moment is the target closing group number so as to determine the group number of the closed electrolytic cell group; when the plan group number is larger than N in the circulation process, subtracting N from the plan group number and then carrying out state judgment.
According to some embodiments, further comprising setting the logical number of the newly opened electrolyte tank group to a preset logical number; and setting a logic number for each cell group of the target cell group according to the reverse sequence of the group numbers by taking the newly opened cell group as a reference.
According to some embodiments, the aforementioned set of operating data comprises a total operating power of the target group of cells; wherein determining the total operating power difference based on the group operating data and P sum to determine the group power split value P i for the target group of cells comprises: comparing P sum with the total running power to determine a total power difference value; determining the operation load state of each target electrolytic cell group according to the total power difference; based on the operating load status and the group operating data, a corresponding group power allocation value P i is determined.
According to some embodiments, the operating load state includes load augmentation; the group operation data also comprises the number of the electrolytic cells in each target electrolytic cell group, the individual operation power of each electrolytic cell in each target electrolytic cell group and the total full load power of all target electrolytic cell groups; wherein determining a corresponding group power allocation value P i based on the operating load status and the group operating data comprises: when the total power difference is smaller than the difference between the total running power and the total full power, for each target electrolytic cell group, according to the number of electrolytic cells and the individual running power of the electrolytic cells, determining an adjustable power value which does not generate the change of the number of the electrolytic cells in each target electrolytic cell group so as to judge whether the change of the running number of the electrolytic cells is necessary at present or not, and distributing group power in a corresponding power distribution mode to obtain a corresponding group power distribution value P i; or when the total power difference is greater than or equal to the difference between the total running power and the total full-load power, the target electrolytic cell group is polled according to the mode that the logic number is from large to small, and the corresponding P i is set as overload power in sequence until the total power difference is distributed.
According to some embodiments, the aforementioned operating load conditions include load shedding; wherein determining a corresponding group power allocation value P i based on the operating load status and the group operating data comprises: when the total power difference is smaller than the adjustable power value, polling the target electrolytic cell group according to a mode that the logic number is from small to large; when the target electrolytic cell group is in an operating state, subtracting the corresponding adjustable power value from the corresponding P i in sequence, and distributing the difference value to the corresponding target electrolytic cell group until the total power difference value is distributed; or when the total power difference is greater than or equal to the sum of the adjustable power values, the target electrolytic cell group is polled from small to large according to the logic number; and when the target electrolytic tank group is in an operation state, setting the corresponding P i as the corresponding lower power limit in sequence until the total power difference is distributed.
According to some embodiments, the aforementioned individual operation data includes the number of cells in operation, the overload power of each cell, the lower power limit of each cell; wherein, based on P i and individual operation data, confirm the single power distribution value of each electrolysis trough to distribute the operation power according to single power distribution value, include: increasing the number of start-up cells to determine a first target cell in a third state where P i is greater than the product of the number of cells in the run state and the overload power of the cells; equally dividing P i into each first target electrolytic cell, and carrying out power maintenance judgment on each first target electrolytic cell to obtain a power distribution value of each electrolytic cell; or, in a fourth state in which P i is less than the product of the number of the electrolytic cells in the operating state and the lower power limit of the electrolytic cells, reducing the number of the electrolytic cells started up to determine a second target electrolytic cell; equally dividing P i into each second target electrolytic cell to obtain the power distribution value of each second target electrolytic cell; or, in the non-third state and the fourth state, determining the number of the electrolytic cells as the number of the third target electrolytic cells; and equally dividing P i into each third target electrolytic tank to obtain the power distribution value of each third target electrolytic tank.
According to some embodiments, equally dividing P i to each first target electrolytic cell, and obtaining a power distribution value of each electrolytic cell after performing power retention determination on each first target electrolytic cell, including: for each first target electrolytic tank, when the power equally divided to the first target electrolytic tank is larger than or equal to the individual running power of the first target electrolytic tank at the current moment, determining the average power value as the power distribution value of the first target electrolytic tank; or when the power equally divided to the first target electrolytic tank is smaller than the individual operation power of the first target electrolytic tank, maintaining the power distribution value of the operated electrolytic tank as the individual operation power of the electrolytic tank; and under the condition that the power of the newly opened electrolytic tank rises and the difference value between the power of the corresponding target electrolytic tank group and P i is smaller than a preset threshold value, determining the equipartition power value as the power distribution value of the operated electrolytic tank.
According to an aspect of the present application, there is provided an electrolytic cell array cooperative control apparatus, comprising:
the information acquisition module is used for acquiring group operation data of the electrolytic cell group, an overall power instruction P sum of the electrolytic cell array and individual operation data of each electrolytic cell in the electrolytic cell group;
The addition and subtraction group mode determining module is used for determining an addition and subtraction group threshold value of the electrolytic cell group based on the group operation data and P sum so as to determine an addition and subtraction group mode and a corresponding target electrolytic cell group;
A group power distribution module for determining a total power difference of operation based on the group operation data and P sum to determine a group power distribution value P i of the target electrolytic cell group;
And the single power distribution module is used for determining a single power distribution value of each electrolytic tank based on the P i and the individual operation data so as to control each electrolytic tank to operate power according to the corresponding single power distribution value.
Optionally, the group operation data includes the number of electrolyzer groups in operation, a lower power limit for each electrolyzer group, and an overload power for each electrolyzer group; the addition and subtraction group threshold value comprises a subtraction group threshold value and an addition group threshold value;
The addition and subtraction mode determining module is specifically configured to:
When P sum is smaller than the group reduction threshold value, reducing the number of the electrolytic cell groups to determine a first target electrolytic cell group, setting P i of the closed electrolytic cell group to 0 to acquire group operation data of the first target electrolytic cell group and carrying out group power distribution; or when P sum is larger than the grouping threshold value, increasing the number of the electrolytic cell groups to determine a second target electrolytic cell group, setting P i of the opened electrolytic cell group as the lowest operation load of the newly opened electrolytic cell group to acquire group operation data of the second target electrolytic cell group and performing group power distribution; or when P sum is larger than or equal to the minus group threshold value and smaller than or equal to the plus group threshold value, determining the number of the electrolytic tank groups as a third target electrolytic tank group number, and carrying out group power distribution.
Optionally, the electrolytic cell array cooperative control device further comprises a group number setting module for:
Sequentially setting group numbers for the target electrolytic cell groups;
initializing plan opening group numbers and plan closing group numbers to be 1 respectively;
Setting the cycle judgment times as N, judging the working state of a target electrolytic cell group with the same group number as the planned opening group number, wherein N is the total group number of the electrolytic cell group; when the working state is a first state which is not operated, has no fault and is in an overhauling state, the cycle is jumped out; or when the current state is not the first state, adding 1 to the planned opening group number, entering the next cycle until the working state is the first state, and determining that the planned opening group number at the moment is the target opening group number so as to determine the group number of the newly opened electrolytic cell group; when the planned open group number is larger than N in the circulation process, subtracting N from the planned close group number and then carrying out state judgment;
Setting the cycle judgment times as N, judging the working state of the target electrolytic cell group with the same group number as the planned group number, and jumping out of the cycle when the working state is a second state of operation, no fault and maintenance; or when the electrolytic cell group is in the non-second state, adding 1 to the planned closing group number, entering the next cycle until the working state is the second state, and determining that the planned closing group number at the moment is the target closing group number so as to determine the group number of the closed electrolytic cell group; when the plan group number is larger than N in the circulation process, subtracting N from the plan group number and then carrying out state judgment.
Optionally, the electrolytic cell array cooperative control device further comprises a logic number setting module, configured to:
setting the logic number of the newly opened electrolytic cell group as a preset logic number;
and setting a logic number for each cell group of the target cell group according to the reverse sequence of the group numbers by taking the newly opened cell group as a reference.
Optionally, the group operational data comprises a total operational power of the target group of cells;
the group power distribution module is specifically configured to:
comparing P sum with the total running power to determine a total power difference value;
determining the running load state of the target electrolytic cell group according to the total power difference value;
Based on the operating load status and the group operating data, a corresponding group power allocation value P i is determined.
Optionally, the aforementioned operating load condition includes load increase; the group operation data also comprises the number of the electrolytic cells in each target electrolytic cell group, the individual operation power of each electrolytic cell in each target electrolytic cell group and the total full load power of all target electrolytic cell groups;
The group power distribution module is specifically configured to, when determining the corresponding group power distribution value P i based on the operating load state and the group operating data:
When the total power difference is smaller than the difference between the total running power and the total full power, for each target electrolytic cell group, according to the number of electrolytic cells and the individual running power of the electrolytic cells, determining an adjustable power value which does not generate the change of the number of the electrolytic cells in each target electrolytic cell group so as to judge whether the change of the running number of the electrolytic cells is necessary at present or not, and distributing group power in a corresponding power distribution mode to obtain a corresponding group power distribution value P i; or alternatively, the first and second heat exchangers may be,
And when the total power difference is greater than or equal to the difference between the total running power and the total full-load power, polling the target electrolytic tank group according to a mode that the logic number is from large to small, and sequentially setting the corresponding P i as overload power until the total power difference is distributed.
Optionally, the operating load condition includes load shedding;
The group power distribution module is specifically configured to, when determining the corresponding group power distribution value P i based on the operating load state and the group operating data:
when the total power difference is smaller than the adjustable power value, polling the target electrolytic cell group according to a mode that the logic number is from small to large; when the target electrolytic cell group is in an operating state, subtracting the corresponding adjustable power value from the corresponding P i in sequence, and distributing the difference value to the corresponding target electrolytic cell group until the total power difference value is distributed; or alternatively, the first and second heat exchangers may be,
When the total power difference is greater than or equal to the sum of the adjustable power values, the target electrolytic cell group is polled from small to large according to the logic number; and when the target electrolytic tank group is in an operation state, setting the corresponding P i as the corresponding lower power limit in sequence until the total power difference is distributed.
Optionally, the individual operation data comprises the number of the electrolytic cells in an operation state, the overload power of each electrolytic cell and the lower power limit of each electrolytic cell;
The single power distribution module is specifically configured to:
increasing the number of start-up cells to determine a first target cell in a third state where P i is greater than the product of the number of cells in the run state and the overload power of the cells; equally dividing P i into each first target electrolytic cell, and carrying out power maintenance judgment on each first target electrolytic cell to obtain a power distribution value of each electrolytic cell; or, in a fourth state in which P i is less than the product of the number of the electrolytic cells in the operating state and the lower power limit of the electrolytic cells, reducing the number of the electrolytic cells started up to determine a second target electrolytic cell; equally dividing P i into each second target electrolytic cell to obtain the power distribution value of each second target electrolytic cell; or alternatively, the first and second heat exchangers may be,
Determining the number of the electrolytic cells as the number of the third target electrolytic cells in the non-third state and the fourth state; and equally dividing P i into each third target electrolytic tank to obtain the power distribution value of each third target electrolytic tank.
Optionally, when the single power distribution module equally distributes P i to each first target electrolytic cell and obtains the power distribution value of each electrolytic cell after performing power retention determination on each first target electrolytic cell, the single power distribution module is specifically configured to:
for each first target electrolytic cell, determining a uniform power value as a power distribution value of the first target electrolytic cell when the power uniformly distributed to the first target electrolytic cell is greater than or equal to the individual operating power of the first target electrolytic cell; or alternatively, the first and second heat exchangers may be,
When the power equally divided to the first target electrolytic tank is smaller than the individual operation power of the first target electrolytic tank, the power distribution value of the operated electrolytic tank is kept as the individual operation power of the electrolytic tank at the current moment; and under the condition that the power of the newly opened electrolytic tank rises and the difference value between the power of the corresponding target electrolytic tank group and P i is smaller than a preset threshold value, determining the equipartition power value as the power distribution value of the operated electrolytic tank.
According to an example embodiment, power distribution can be dynamically performed according to the current status and demand by acquiring group operation data of the cell group, the total power instruction P sum of the cell array, and individual operation data of each cell in real time. This ensures that the cell array can respond quickly to changes in power demand, improving the response speed and flexibility of the hydrogen production system. In addition, the number of running electrolytic tank groups can be adjusted according to the needs by adding and subtracting the group mode and determining the corresponding target electrolytic tank groups, so that the dynamic balance of power is further realized. Based on the group operation data and the operation total power difference determined by P sum, the group power distribution value P i of the target electrolytic cell group can be calculated. Further, the individual power distribution value of each electrolytic cell can be accurately determined by combining the individual operation data of each electrolytic cell. The coordination operation of the electrolytic tank group can be realized, and the flexible tracking of the hydrogen production side is ensured under the condition of rapid fluctuation of the generated power. The operation number and power distribution of the electrolytic cell groups are flexibly adjusted, so that each electrolytic cell is ensured to obtain proper power distribution, frequent start and stop of part of electrolytic cells in the hydrogen production process are avoided, and the safety of the hydrogen production system is improved.
According to an aspect of the present application, there is provided an electronic device including: one or more processors; a storage means for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the methods as described above.
According to an aspect of the application, a computer-readable medium is proposed, on which a computer program is stored, which program, when being executed by a processor, implements a method as described above.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it will be apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings by those skilled in the art without departing from the scope of the claimed application.
FIG. 1 illustrates a schematic diagram of a hydrogen production system, according to an example embodiment;
FIG. 2 illustrates a flow chart of a method of cooperative control of an electrolytic cell array in accordance with an exemplary embodiment;
FIG. 3 illustrates a flow chart of a power optimized allocation strategy according to an exemplary embodiment;
FIG. 4 illustrates a flowchart of an intra-group power allocation strategy according to an example embodiment;
FIG. 5 illustrates a flow chart of another method of co-controlling an electrolytic cell array according to an exemplary embodiment;
FIG. 6 illustrates a block diagram of an electrolytic cell array cooperative control apparatus in accordance with an exemplary embodiment;
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Along with the gradual landing of large-scale new energy hydrogen production projects, the hydrogen production side process gradually adopts the design scheme of a plurality of groups of electrolytic tanks, each group adopts a plurality of electrolytic tanks to separate and purify a set of device, the grouping operation condition of the electrolytic tanks cannot be considered in the existing multi-electrolytic tank combined operation strategy, and the universality of different hydrogen production processes is poor. In addition, the existing operation strategy is also only to simply calculate the number of the electrolytic cells in the operation, hot standby and cold standby states when power distribution is carried out, and state rotation is carried out according to a fixed period, so that part of the electrolytic cells are in a frequently started and stopped state easily, and the service life of the electrolytic cells is influenced. Finally, for the electrolytic tank, the lifting load has speed limitation, and the adjusting capability of multiple electrolytic tanks cannot be fully utilized in the related art, so that the response speed of a power instruction is slow; meanwhile, the power value of the single electrolytic tank is directly output after being distributed, the middle process of lifting the load of the electrolytic tank is not considered, so that the total running power of the electrolytic tank fluctuates in a large range in the changing process, and the overall balance of the hydrogen production system is not facilitated.
FIG. 1 illustrates a schematic structural diagram of a hydrogen production system according to an example embodiment. The hydrogen production system can be provided with a plurality of electrolytic tank groups, each electrolytic tank group comprises a plurality of electrolytic tanks, and each electrolytic tank group corresponds to one set of separation and purification device. In the hydrogen production system of fig. 1, a stack of four cells is shown, the cells being connected to a power source for operation. The set of separation and purification device corresponding to the electrolytic cell group can comprise an oxygen separation tank, an oxygen scrubber, an oxygen liquid separation tank, an alkali liquor circulating pump, a hydrogen separation tank, a hydrogen scrubber, a hydrogen liquid separation tank and a purification system. In some application scenarios, the hydrogen production system may comprise multiple sets of the structure shown in fig. 1.
Reference may be made to the following examples for specific implementation.
Fig. 2 shows a flowchart of an electrolytic cell array cooperative control method according to an exemplary embodiment, which can be applied to a cooperative control apparatus. As shown in fig. 2, the method includes:
s201, acquiring group operation data of the electrolytic cell group, an overall power instruction P sum of the electrolytic cell array and individual operation data of each electrolytic cell in the electrolytic cell group.
A hydrogen production system may comprise a plurality of cell stacks, and for each cell stack, stack operating data may comprise: the power lower limit of the single cell group (each cell group), the full load power of the single cell group, the overload power of the single cell group, the number of cells in the single cell group, the number of cell groups in an operating state, the faults of the single cell group and the maintenance state of the single cell group, the individual operating power of the single cell group, the total operating power of all cell groups, the difference between the total operating power and the full load power of the cell groups in the operating state, and the adjustable power value of the change of the number of cells in the single cell group are not generated. These sets of operating data may be sent by the device generating the data to the coordinated control means. The individual operating data may include the number of cells in the cell stack in operation, the individual operating power of the individual cells (each cell), the power lower limit of the individual cells, the overload power of the individual cells. These individual operating data may be sent to the coordinated control means by the device generating these data.
In some implementations, the criteria for whether the cell stack is in operation may be: the alkali liquor circulating pump operates, and the operating power of at least one electrolytic tank is not less than 50% of rated power.
Each cell group may contain a number of cells, which may be in operation, may be in a closed state, or may be in a fault state. In the case that only one electrolytic cell is arranged in one electrolytic cell group, the structure of the separation and purification device corresponding to one electrolytic cell in the related art corresponds to that of one set of separation and purification device. Therefore, the application is applicable to different application scenes, has strong universality and can adapt to different hydrogen production process forms.
In some implementations, the overload power, full load power of a single cell stack may not be sent directly to the coordinated control, and may be calculated based on other parameters.
In the scene of new energy hydrogen production, in order to solve the power balance problem in electric hydrogen coupling, an energy management system can be adopted to carry out economic optimization scheduling and coordination control on the system, and a new energy power generation plan and a total power instruction of a hydrogen production side are generated, so that the effect of 'source-load interaction' is achieved. The total power command here may be referred to as the cell array total power command P sum, which may be used to characterize the sum of the operating powers of all cells in all cell groups.
S202, determining an addition and subtraction group threshold value of the electrolytic cell group based on the group operation data and P sum so as to determine an addition and subtraction group mode and a corresponding target electrolytic cell group.
The addition and subtraction group threshold value can be used for judging whether the current running cell group can meet the requirement of the total power instruction, and the addition and subtraction group mode can be used for indicating which cell groups need to be newly started or which cell groups need to be newly shut down under what conditions. The target cell group may be used to represent the current time cell group versus a newly opened cell group, or the final cell group after subtracting the closed cell group.
According to an example embodiment, the corresponding addition-subtraction group threshold value may be matched based on the group operation data and P sum, thereby determining an addition-subtraction group manner and a corresponding target cell group.
S203, based on the group operation data and P sum, determining an operation total power difference to determine a group power distribution value P i of the target electrolytic cell group.
The total operating power difference can be used to represent the difference between the total operating power of the target cell stack and P sum, which can correspond to different stack power distribution situations. The resulting component power split value for the target cell group was designated as P i. Wherein if there are N groups of target electrolytic cell groups, the corresponding group power distribution value may be P 1、P2、P3……PN.
S204, based on P i and the individual operation data, determining a single power distribution value of each electrolytic tank so as to control each electrolytic tank to distribute the operation power according to the corresponding single power distribution value.
A single power distribution value may be used to represent the value of the operating power initially distributed to each cell.
According to an example embodiment, a selected intra-group power allocation strategy may be performed, operating on P i and the individual operating data, resulting in a single power allocation value for each cell in each cell group. And then a single power distribution value can be distributed to the corresponding electrolytic tank for working.
By acquiring the group operation data of the electrolytic cell group, the total power instruction P sum of the electrolytic cell array and the individual operation data of each electrolytic cell in real time, the power distribution can be dynamically carried out according to the current state and the requirement. This ensures that the cell array can respond quickly to changes in power demand, improving the response speed and flexibility of the hydrogen production system. In addition, the number of running electrolytic tank groups can be adjusted according to the needs by adding and subtracting the group mode and determining the corresponding target electrolytic tank groups, so that the power balance is further realized. Based on the group operation data and the operation total power difference determined by P sum, the group power distribution value P i of the target electrolytic cell group can be calculated. Further, the individual power distribution value of each electrolytic cell can be accurately determined by combining the individual operation data of each electrolytic cell. The coordination operation of the electrolytic tank group can be realized, and the flexible tracking of the hydrogen production side is ensured under the condition of rapid fluctuation of the generated power. The operation number and power distribution of the electrolytic tank groups are flexibly adjusted, proper power distribution of each electrolytic tank is ensured, frequent start and stop of part of electrolytic tanks in the hydrogen production process are avoided, the stability of the hydrogen production system is improved, and the production efficiency of hydrogen is further improved.
According to some embodiments, S201-S204 may be performed periodically, e.g., every fifteen minutes. In some implementations, the operation data of the electrolyzer can be monitored in real time, and when a fault occurs between two execution periods and a power deficiency occurs, the calculation can be triggered immediately, and the steps S201-S204 are executed again.
According to some embodiments, the stack operating data includes the number of electrolyzer stacks in an operating state, a lower power limit for each electrolyzer stack, an overload power for each electrolyzer stack; the addition and subtraction group threshold values include a subtraction group threshold value and an addition group threshold value. Some parameters in P sum and group operation data can be compared, and a group adding and subtracting mode and a corresponding target electrolytic cell group are determined according to different comparison results. Specifically, when P sum is smaller than the group reduction threshold, reducing the number of the electrolytic cell groups to determine a first target electrolytic cell group, and setting P i of the closed electrolytic cell group to 0 to acquire group operation data of the first target electrolytic cell group and perform group power distribution; or when P sum is larger than the grouping threshold value, increasing the number of the electrolytic cell groups to determine a second target electrolytic cell group, setting P i of the opened electrolytic cell group as the lowest operation load of the newly opened electrolytic cell group to acquire group operation data of the second target electrolytic cell group and performing group power distribution; or when P sum is larger than or equal to the minus group threshold value and smaller than or equal to the plus group threshold value, determining the number of the electrolytic tank groups as a third target electrolytic tank group number, and carrying out group power distribution.
The product of the number of electrolytic cell groups in operation and the lower power limit may be set as a subtraction threshold value, and the product of the number of electrolytic cell groups in operation and the overload power may be set as an addition threshold value.
The first target cell group may be used to represent an overall cell group after reducing the number of cell groups; the second target cell group may be used to represent an overall cell group after increasing the number of cell groups; the third target cell group may be used to represent the number of cell groups in operation at the present moment.
According to an example embodiment, when P sum is less than the product of the number of cell groups in operation and the lower power limit, the system reduces the total number of cell groups in operation and sets the power split value P i for the closed cell group to 0. Then, the system re-acquires the group operation data of the target electrolytic cell group and performs group power distribution so as to ensure that the rest electrolytic cell groups can reasonably distribute the total power instruction. For example, the number of cell groups in operation at the present time is 5, the first target cell group is 4 after the reduction of the number of cell groups, and P i of the cell group that is turned off is set to 0.
When P sum is greater than the product of the number of cell groups in operation and the overload power, the system increases the total number of cell groups and sets the power split value P i for the newly opened cell group to its lowest operating load. Then, the system re-acquires the group operation data of the cell group and performs group power distribution to make full use of the newly added cell group.
When P sum is greater than or equal to the product of the number of the electrolytic cell groups in the running state and the lower power limit and is less than or equal to the product of the number of the electrolytic cell groups and the overload power, the system judges that the running total power instruction is in the normal running range of the electrolytic cell groups in the running state. In this case, the system directly performs group power distribution, and according to the current operation data and the total power instruction, P sum is reasonably distributed to each cell group so as to realize balance and optimization of power.
According to some embodiments, group numbers may be provided for groups of cells to determine which groups of cells to specifically turn on or off when a new group of cells needs to be turned on or off. Specifically, group numbers are sequentially set for the target electrolytic cell groups; initializing plan opening group numbers and plan closing group numbers to be 1 respectively; setting the cycle judgment times as N, judging the working state of a target electrolytic cell group with the same group number as the planned opening group number, wherein N is the total group number of the electrolytic cell group; when the working state is a first state which is not operated, has no fault and is in an overhauling state, the cycle is jumped out; or when the current state is not the first state, adding 1 to the planned opening group number, entering the next cycle until the working state is the first state, and determining that the planned opening group number at the moment is the target opening group number so as to determine the group number of the newly opened electrolytic cell group; when the planned open group number is larger than N in the circulation process, subtracting N from the planned close group number and then carrying out state judgment; setting the cycle judgment times as N, judging the working state of the target electrolytic cell group with the same group number as the planned group number, and jumping out of the cycle when the working state is a second state of operation, no fault and maintenance; or when the electrolytic cell group is in the non-second state, adding 1 to the planned closing group number, entering the next cycle until the working state is the second state, and determining that the planned closing group number at the moment is the target closing group number so as to determine the group number of the closed electrolytic cell group; when the plan group number is larger than N in the circulation process, subtracting N from the plan group number and then carrying out state judgment.
In some implementations, a unique group number may be provided for each cell group. The group numbers are ordered according to a certain rule, for example numbering according to the installation order or power level of the cell group. Such group numbering enables the cooperative control means to clearly identify and distinguish each cell group. When the cooperative control apparatus is initialized, the cooperative control apparatus sets a plan open group number and a plan close group number, and initial values of both numbers are set to 1. These two numbers are used to indicate which numbered cell group should be operated when it is desired to turn on or off the cell group.
Next, the cooperative control means may start a cycle determination process of setting the number of cycles to N, where N is the total number of sets of electrolytic cell sets, and may jump out of the cycle after the condition is satisfied halfway. In each cycle, the cooperative control means first determines the operating state of the cell group which is the same as the planned opening group number.
If the cell stack with the same planned stack number is not in operation, is not faulty and is in service, then the cell stack can be considered to be on and cycle out. At this time, the group number of the cell group is the group number of the cell group that needs to be newly opened.
If the same electrolytic cell group as the planned opening group number does not meet the opening condition (i.e., is in an operating state, is faulty or is being overhauled), the cooperative control means adds 1 to the planned opening group number, and then makes a state judgment again. This process is cycled until an openable cell group is found. If the planned open group number is larger than N in the circulation process, subtracting N from the planned close group number and then carrying out state judgment.
The treatment mode considers the recycling condition of the electrolytic cell groups and ensures that all the electrolytic cell groups can be utilized fairly.
The process of determining the target group number is similar to the process of determining the target group number, and will not be described again here.
According to an exemplary embodiment, after determining the target cell group number, the cell group corresponding to the number is the cell group to be opened (newly opened cell group).
By setting the group number for the electrolytic cell group, accurate identification and management of the electrolytic cell group can be realized. Each electrolytic cell group has a unique group number, so that when the electrolytic cell group needs to be opened or closed, the target electrolytic cell group can be accurately positioned, and misoperation or improper operation can be avoided. Second, the group number based cell group control method simplifies the operational complexity of the system. By setting the planned open group number and the planned closed group number, and combining the cycle determination process, the cell group satisfying the open or close condition can be automatically found without manually making a judgment one by one. The method not only reduces the operation difficulty and labor cost, but also improves the accuracy and efficiency of the operation. The recycling of the electrolytic cell groups can be realized, so that all the electrolytic cell groups can be utilized fairly, and the situation that certain electrolytic cell groups are in an idle state or are excessively used for a long time is avoided. The whole device can rotate among the groups of the electrolytic cells according to actual demands, balance the running time among the groups, and avoid the problem that part of electrolytic cells are frequently started and stopped caused by fixed cycle rotation.
According to some embodiments, the logical number of the electrolytic cell group can be further set on the basis of the group number, so that subsequent P sum distribution is facilitated. Specifically, the logic number of the newly opened electrolytic cell group is set as a preset logic number; and setting logic numbers for each target electrolytic cell group according to the reverse sequence of the group numbers by taking the newly opened electrolytic cell group as a reference.
In some implementations, the logical number of the newly opened electrolyte tank group may be set to the largest logical number, and it should be noted that the logical number is the same as the number and the size of the group numbers. When the cooperative control device judges that a new electrolytic cell group needs to be started, the logic number of the newly opened electrolytic cell group is set as the largest logic number in all the current electrolytic cell groups. This ensures that the logical number of the newly opened cell group is unique and greater than the logical number of all other cell groups.
Next, with newly opened cell groups as a reference, the cooperative control device resets the logical number for each cell group in reverse order of the group number. The reverse order setting mode is beneficial to priority ordering according to the order of the logic numbers in the subsequent P sum allocation process, so that the power is more reasonably allocated.
According to an example embodiment, the logic number may be determined by:
assuming that there are 10 groups of cells, the group numbers are 1-10 in turn, if the cell group with group number 5 is a newly opened group at this time, the logical number of the group is 10, the logical number of group number 4 is 9 … …, the logical number of group number 1 is 6, the logical number of group number 10 is 5, and so on, the logical number of group number 6 is 1.
By setting a preset logic number for the newly opened electrolytic tank groups, each newly opened electrolytic tank group is ensured to follow the same numbering rule, so that the logic number of the hydrogen production system has standardization and consistency. This helps to simplify the system management process and improve maintainability and scalability of the system. By setting a logical number for each cell group of the target cell group in reverse order of the group number with the newly opened cell group as a reference, the logical number of the cell group corresponds to its actual position or order in the system.
According to some embodiments, the group operational data includes a total operational power of the target group of cells. The total power difference may be calculated first, and whether the load is currently increased or decreased may be determined based on the total power difference, so that the allocation of the group power is performed, respectively. Specifically, comparing P sum with the total running power to determine a total power difference; determining the operation load state of each target electrolytic cell group according to the total power difference; based on the operating load status and the group operating data, a corresponding group power allocation value P i is determined.
The total power difference can be used for representing the difference between P sum and the total running power, and the change direction of the current hydrogen production load can be rapidly determined. If the total power difference is positive, that is, P sum is larger than the total running power, the current moment can be judged to be the load increasing state. Conversely, if the total power difference is negative, i.e., P sum is less than the total power of operation, it may be determined that the current time is in the reduced load state.
By calculating the total power difference between the total power command P sum and the total power of the current target electrolytic tank group, the change trend of the current hydrogen production load can be rapidly and accurately judged. The real-time and accurate load judging mechanism can rapidly respond to load change, and the power change value is jointly born by a plurality of groups of electrolytic cells, so that the corresponding speed of a power instruction can be increased. Since the power requirements of the cell array may change over time and with changes in operating conditions, the system is able to dynamically adapt to such changes by comparing P sum to the total power operated in real time and adjusting the operating load of each cell group. The dynamic adaptability ensures that the system can keep high-efficiency operation under different working scenes, improves the flexibility and response speed of the system, and can better maintain the safe operation of the electrolytic cell array through accurate power distribution and dynamic adjustment.
According to some embodiments, the group operation data further includes the number of cells within each target cell group, the individual operating power of each cell within each target cell group, the total full power of all target cell groups. When the running load state is load increase, when the total power difference is smaller than the difference between the total running power and the total full power, for each target electrolytic cell group, according to the number of electrolytic cells and the individual running power of the electrolytic cells, determining an adjustable power value which does not generate the change of the number of the electrolytic cells in each target electrolytic cell group so as to judge whether the change of the running number of the electrolytic cells is required to occur currently, and performing group power distribution in a corresponding power distribution mode to obtain a corresponding group power distribution value P i; or when the total power difference is greater than or equal to the difference between the total running power and the total full-load power, the target electrolytic cell group is polled according to the mode that the logic number is from large to small, and the corresponding P i is set as overload power in sequence until the total power difference is distributed.
In some implementations, the calculation of the adjustable power value without changing the number of cells in each cell group may be as follows:
Assuming that 4 electrolytic cells are in total in the electrolytic cell group, 3 electrolytic cells are operated at present, and the current power of the electrolytic cell group, namely the sum of the powers of the electrolytic cell units in the operating state in the electrolytic cell group, is P now. The power-increasing adjustable quantity without generating the change of the number of the electrolytic cells is as follows: the rated power of a single electrolytic tank is multiplied by 1.1-P now, and the adjustable quantity of the power reduction is as follows: p now -3 times the rated power of a single electrolytic cell is multiplied by 0.5.
According to an exemplary embodiment, the cooperative control means calculates an adjustable power value for each cell group, inside which no change in the number of cells occurs. This calculation is based on the number of cells and the individual operating power, aiming at determining the maximum power range that each cell group can adjust without changing the number of cells operating.
In some implementations, when the total power difference is less than the difference between the total operating power and the total full power, the cooperative control device may determine that an adjustable power value for each target cell group does not generate a change in the number of cells, and further determine whether a change in the number of cells currently must occur. In this case, a corresponding group power allocation manner may be performed, and when the total power difference is greater than or equal to the difference between the total operating power and the total full power, the cell group may be polled in a manner of logical number from large to small, and the corresponding power command P i may be set to the overload power in sequence. Meanwhile, the cooperative control device can continuously poll and distribute power until the total power difference is completely distributed.
In the execution process of the distribution mode corresponding to the whole load increase, the cooperative control device can monitor the running state and the power output of the system in real time, and ensure the accuracy and the effectiveness of power distribution.
According to some embodiments, when the operating load state is load shedding, the target cell group can be polled from small to large according to the logic number when the total power difference value is smaller than the adjustable power value; when the target electrolytic cell group is in an operating state, subtracting the corresponding adjustable power value from the corresponding P i in sequence, and distributing the difference value to the corresponding target electrolytic cell group until the total power difference value is distributed; or when the total power difference is greater than or equal to the sum of the adjustable power values, the target electrolytic cell group is polled from small to large according to the logic number; and when the target electrolytic tank group is in an operation state, setting the corresponding P i as the corresponding lower power limit in sequence until the total power difference is distributed.
By comparing the total power difference with the sum of the adjustable power values of all cell groups. If the total power difference is less than the sum of the adjustable power values, it is stated that the load shedding demand can be met by adjusting the power output of the existing electrolyzer without shutting down any electrolyzer. In this case, the cell groups can be polled in a logical number from small to large. For the electrolyzer group in the running state, the corresponding power command P i can be subtracted by the corresponding adjustable power value in sequence, and the difference value is redistributed to other electrolyzer groups until the total power difference value is completely distributed.
However, if the total power difference is greater than or equal to the sum of the adjustable power values, it means that the load reduction requirement cannot be met by adjusting the power output of the existing cells alone, and that some of the cells must be shut down to reduce the total power. In this case, the cell groups can be polled in a logical number from small to large. For the electrolyzer group in the running state, the corresponding power instruction P i can be set as the corresponding lower power limit in sequence, namely, part of the electrolyzer is closed or the running power of the electrolyzer group is reduced until the total power difference is distributed.
In the execution process of the group power distribution mode corresponding to the whole load reduction, the cooperative control device can monitor the running state and the power output of the system in real time, and ensure the accuracy and the stability of power distribution.
According to some embodiments, the individual operating data includes the number of cells in operation, the overload power of each cell, and the lower power limit of each cell. The method can further process a single power distribution value, specifically, in a third state that P i is larger than the product of the number of the electrolytic cells in the running state and the overload power of the electrolytic cells, the starting number of the electrolytic cells is increased to determine a first target electrolytic cell; equally dividing P i into each first target electrolytic cell, and carrying out power maintenance judgment on each first target electrolytic cell to obtain a power distribution value of each electrolytic cell; or, in a fourth state in which P i is less than the product of the number of the electrolytic cells in the operating state and the lower power limit of the electrolytic cells, reducing the number of the electrolytic cells started up to determine a second target electrolytic cell; equally dividing P i into each second target electrolytic cell to obtain the power distribution value of each second target electrolytic cell; or, in the non-third state and the fourth state, determining the number of the electrolytic cells as the number of the third target electrolytic cells; and equally dividing P i into each third target electrolytic tank to obtain the power distribution value of each third target electrolytic tank.
The first target cell, the second target cell and the third target cell may be used to represent the overall cell under different conditions, respectively. For example, the first target cell may be used to indicate that in a third state where Pi is greater than the product of the number of cells and the overload power of the cells, the total cells after the number of cells started up are increased on the basis of the current cells.
In some implementations, the cooperative control means may employ different power distribution means depending on the magnitude of Pi and the current operating state of the cell stack.
When P i is larger than the product of the number of the electrolytic cells in the running state and the overload power of the electrolytic cells, the current electrolytic cell group cannot meet the power requirement, and the starting-up number of the electrolytic cells needs to be increased. In this case, the cooperative control means calculates the number of cells that need to be increased and equally divides P i to each cell. After the equipartition is completed, the cooperative control device performs a power maintaining operation, thereby obtaining a final power distribution value.
Conversely, when P i is less than the product of the number of cells in operation and the lower power limit of the cells, this indicates that the current cell stack is over-powered, and the number of cells started needs to be reduced. The cooperative control means calculates the number of cells that need to be shut down and averages the remaining P i to each cell that is still running. In this way, each cell can be properly power distributed, ensuring efficient operation of the system.
If the size of P i is between the two conditions, that is, the starting number of the electrolytic cells is not required to be increased or reduced, the cooperative control device can directly divide P i into each electrolytic cell. In this case, each cell will be equally distributed, maintaining stable operation of the system.
In other implementations, the cooperative control device can fully consider overload power and lower power limit of the electrolytic tank in the whole process of power distribution in the group, so as to ensure the rationality and safety of power distribution. Meanwhile, the cooperative control device can dynamically adjust the power distribution strategy according to the actual hydrogen production requirement and the system running state, so that flexible control and optimization of hydrogen production yield are realized.
By further optimizing the allocation within the group, the hydrogen production system can achieve finer and flexible power control. The specific power distribution scheme can be formulated according to the individual operation data, so that the hydrogen production system can dynamically adjust the starting number and power distribution of the electrolytic tank under different operation states, and the full utilization and high-efficiency conversion of power are ensured. The flexible tracking of the hydrogen production side under the condition of rapid fluctuation of the generated power is realized.
According to some embodiments, when the intra-group distribution formula needs to be further optimized, power retention determination may be performed on each first target electrolytic cell, specifically, for each first target electrolytic cell, when the power equally divided to the first target electrolytic cell is greater than or equal to the individual operation power of the first target electrolytic cell at the current moment, determining the average power value as the power distribution value of the first target electrolytic cell; or when the power equally divided to the first target electrolytic tank is smaller than the individual operation power of the first target electrolytic tank, maintaining the power distribution value of the operated electrolytic tank as the individual operation power of the electrolytic tank; and under the condition that the power of the newly opened electrolytic tank rises and the difference value between the power of the corresponding target electrolytic tank group and P i is smaller than a preset threshold value, determining the equipartition power value as the power distribution value of the operated electrolytic tank.
The power retention judgment can be used as a key link for ensuring the stable operation of the new energy hydrogen production system, and the power distribution value of the electrolytic tank is determined according to the comparison result of the power equally divided to each electrolytic tank and the individual operation power of the electrolytic tank, and the power rising condition of the newly opened electrolytic tank and the preset threshold value of the total power difference value. The individual operating power at the current time can be used for representing the current operating power of the electrolytic tank, and maintaining the power distribution value of the operated electrolytic tank as the individual operating power at the current time of the electrolytic tank can be used for representing maintaining the current operating power of the electrolytic tank unchanged. The preset threshold may be 0-1%, i.e. when the power of the single cell stack is close to P i.
In some implementations, when the power equally divided to each electrolyzer is greater than the individual operating power of the electrolyzer, it is stated that the hydrogen production system needs to increase the power output of the electrolyzer to meet the power command requirements. In this case, the cooperative control means may directly determine the average power value as the power distribution value of the electrolytic cell.
When the power equally divided to each cell is smaller than the individual operating power of the cell, the cooperative control means may maintain the power division value of the operated cell as the individual operating power of the cell, instead of further reducing the power output thereof. In addition, when the power of the newly opened electrolytic tank starts to rise and the difference value between the power of the corresponding electrolytic tank group and the power command P i is smaller than a preset threshold value, the power distribution value of the operated electrolytic tank is adjusted, so that the large-range fluctuation of the total operation power of the electrolytic tank caused by the middle process of lifting the load can be avoided.
In other implementations, the cooperative control device may monitor the power output of the electrolyzer and the hydrogen production requirements of the system in real time during the execution of the overall power conservation determination, and dynamically adjust the power distribution value according to the actual situation. Meanwhile, the cooperative control device also considers the performance and the running state of the electrolytic tank, and ensures the rationality and the safety of power distribution.
By performing the power maintenance decision process, the rate limit of the load lifting of the electrolytic cell can be fully considered, and the wide fluctuation of the total operating power of the electrolytic cell caused by the intermediate process of the load lifting can be avoided.
According to some embodiments, the number of cells within each cell group may be multiplied by the rated power to determine the full power of each cell group; multiplying the full load power by an overload factor to determine an overload power for each cell group; and summing the full-load power of all the electrolytic cell groups to obtain the full-load power sum of the electrolytic cell groups.
In some implementations, the cooperative control means may perform the step of calculating the full power of each cell group. This process may include: the number of cells in each cell group is multiplied by the rated power of each cell. For example, if there are 10 cells in a stack, each rated at 5MW, then the full power of the stack is 10 times 5MW, which is equal to 50MW.
After determining the full load power of the cell stack, the cooperative control means may further calculate the overload power. To account for possible overload conditions in hydrogen production systems and to ensure system safety, full power is typically multiplied by an overload factor. In this embodiment, this overload factor may be set to 1.1. By multiplying the full load power by the overload factor, the cooperative control means can calculate the overload power of the cell stack. Taking the previous example as an example, the overload power of the cell stack is 50MW by 1.1, which is equal to 55MW.
If there are a total of 6 groups of cells, then the total full capacity of all groups of cells is 6 times 50MW, equal to 300MW.
After the calculation is completed, the cooperative control device uses the parameters in the subsequent group power allocation and the intra-group power optimization allocation. Therefore, the hydrogen production system can reasonably distribute and adjust the power output of the electrolytic tank according to the actual hydrogen production requirement and equipment performance, and ensure the safe operation of the system and high-efficiency hydrogen production.
According to some embodiments, the safe operating range for a single cell is typically 50% -110% of rated power, so that the lower power limit of a single cell stack can be 50% of the rated power of the individual cells.
Fig. 3 illustrates a flow chart of a power optimized allocation strategy according to an exemplary embodiment, comprising:
comparing the total power of P sum and the running power of all the electrolytic cell groups, and solving the difference delta P sum between the total power and the running power, and when the total power is the load increase:
If Δp sum is smaller than the difference between the total operating power and the total full power of the cell group in the operating state, when Δp sum is larger than the sum of the power increasing adjustable amounts without changing the number of the cells in the Shan Dianjie cell group, meaning that the number of the cells must be changed, polling the cell group with the largest logical number from the cell group with the small logical number, and sequentially setting the corresponding P i as the full power of the single cell group until the distribution of Δp sum is completed. When the delta P sum is smaller than the sum of the power increasing adjustable quantity without changing the number of the electrolytic cells in the Shan Dianjie cell group, polling the electrolytic cell group with the largest logic number to the electrolytic cell group with the small logic number, and sequentially increasing the power by the corresponding power increasing adjustable quantity without changing the number of the electrolytic cells in the single electrolytic cell group until the delta P sum is distributed.
If Δp sum is greater than the difference between the total operating power and the total full power of the cell group in the operating state, polling from the cell group with the largest logical number to the cell group with the small logical number, and sequentially setting the corresponding P i as the overload power of the single cell group until Δp sum is distributed.
When the load is reduced:
And if the delta P sum is smaller than the sum of the adjustable power values which do not generate the change of the number of the electrolytic cells in the Shan Dianjie cell group, polling the electrolytic cell group with the smallest logic number from the electrolytic cell group with the large logic number, and if the electrolytic cells in the group are in an operating state, subtracting the adjustable power values which do not generate the change of the number of the electrolytic cells in the electrolytic cell group from the corresponding P i in sequence until the delta P sum is distributed.
And if the delta P sum is larger than the sum of adjustable power values of no change of the number of the electrolytic cells in the Shan Dianjie cell group, polling from the cell group with the smallest logic number to the cell group with the large logic number, and if the cell group is in an operating state, setting the corresponding P i as the lower power limit of the single cell group in sequence until the delta P sum is distributed.
The group power optimizing and distributing strategy can avoid frequent start and stop of the electrolytic cells, and the power change value is jointly born by a plurality of groups of electrolytic cells, so that the response speed of the power instruction is increased.
The current operating data of the electrolytic cells in the group are: the number of cells in operation, the individual operating power of the individual cells, the lower power limit of the individual cells, and the overload power of the individual cells.
Fig. 4 illustrates a flow chart of an intra-group power allocation strategy according to an example embodiment, comprising:
If P i is larger than the product of the number of the electrolytic cells in the running state and the overload power of the single electrolytic cell, increasing the number of the started electrolytic cells, equally dividing P i to each electrolytic cell, and executing power locking logic to obtain the power distribution value of the single electrolytic cell;
If P i is smaller than the product of the number of the electrolytic cells in the running state and the lower power limit of the single electrolytic cell, reducing the number of the start-up electrolytic cells, and equally dividing P i to each electrolytic cell to obtain the power distribution value of the single electrolytic cell;
and (3) directly equally dividing P i to each electrolytic tank under the rest conditions to obtain the power distribution value of a single electrolytic tank.
The power latching logic is:
If the power evenly distributed to each electrolytic tank is larger than the individual running power of the single electrolytic tank, directly taking the evenly distributed power value as the power distribution value of the single electrolytic tank;
If the power evenly distributed to each electrolytic tank is smaller than the individual running power of the single electrolytic tank, the power distribution value of the running electrolytic tank is kept to be the individual running power of the single electrolytic tank, and the power distribution value of the single electrolytic tank is taken as the power distribution value of the running electrolytic tank when the power of the newly started electrolytic tank rises and the power of the single electrolytic tank group approaches to P i.
The power lock logic fully considers the rate limit of the load lifting of the electrolytic cell and avoids the wide fluctuation of the total operating power of the electrolytic cell caused by the middle process of the load lifting.
Fig. 5 shows a flow chart of another method of co-controlling an electrolytic cell array according to an exemplary embodiment. Referring to fig. 5, the operation state of the electrolytic tank can be monitored in real time, when a fault occurs, the total operation power of all electrolytic tank groups is excessively deviated from P sum, and power shortage occurs, at this time, S502-S506 are re-executed, and a new operation power distribution value of the electrolytic tank is obtained in time, so that the requirement of P sum is met.
The following describes apparatus embodiments of the present application that may be used to perform method embodiments of the present application. For details not disclosed in the embodiments of the device according to the application, reference is made to the embodiments of the method according to the application.
Fig. 6 shows a block diagram of an electrolytic cell array cooperative control apparatus according to an exemplary embodiment. As shown in fig. 6, the electrolytic cell array cooperative control apparatus 600 includes an information acquisition module 601, an addition and subtraction group mode determination module 602, a group power distribution module 603, and a single power distribution module 604.
The information acquisition module 601 is configured to acquire group operation data of the electrolyzer group, an overall power instruction P sum of the electrolyzer array, and individual operation data of each electrolyzer in the electrolyzer group;
An addition and subtraction group mode determining module 602, configured to determine an addition and subtraction group threshold value of the electrolytic cell group based on the group operation data and P sum, so as to determine an addition and subtraction group mode and a corresponding target electrolytic cell group;
A group power distribution module 603 for determining an operation total power difference based on the group operation data and P sum to determine a group power distribution value P i of the target electrolytic cell group;
And a single power distribution module 604, configured to determine a single power distribution value of each electrolytic cell based on the P i and the individual operation data, so as to control each electrolytic cell to operate according to the corresponding single power distribution value.
Optionally, the group operation data includes the number of electrolyzer groups in operation, a lower power limit for each electrolyzer group, and an overload power for each electrolyzer group; the addition and subtraction group threshold value comprises a subtraction group threshold value and an addition group threshold value;
the addition and subtraction method determining module 602 is specifically configured to:
When P sum is smaller than the group reduction threshold value, reducing the number of the electrolytic cell groups to determine a first target electrolytic cell group, setting P i of the closed electrolytic cell group to 0 to acquire group operation data of the first target electrolytic cell group and carrying out group power distribution; or when P sum is larger than the grouping threshold value, increasing the number of the electrolytic cell groups to determine a second target electrolytic cell group, setting P i of the opened electrolytic cell group as the lowest operation load of the newly opened electrolytic cell group to acquire group operation data of the second target electrolytic cell group and performing group power distribution; or when P sum is larger than or equal to the minus group threshold value and smaller than or equal to the plus group threshold value, determining the number of the electrolytic tank groups as a third target electrolytic tank group number, and carrying out group power distribution.
Optionally, the electrolytic cell array cooperative control apparatus 600 further includes a group number setting module 605 for:
Sequentially setting group numbers for the target electrolytic cell groups;
initializing plan opening group numbers and plan closing group numbers to be 1 respectively;
Setting the cycle judgment times as N, judging the working state of a target electrolytic cell group with the same group number as the planned opening group number, wherein N is the total group number of the electrolytic cell group; when the working state is a first state which is not operated, has no fault and is in an overhauling state, the cycle is jumped out; or when the current state is not the first state, adding 1 to the planned opening group number, entering the next cycle until the working state is the first state, and determining that the planned opening group number at the moment is the target opening group number so as to determine the group number of the newly opened electrolytic cell group; when the planned open group number is larger than N in the circulation process, subtracting N from the planned close group number and then carrying out state judgment;
Setting the cycle judgment times as N, judging the working state of the target electrolytic cell group with the same group number as the planned group number, and jumping out of the cycle when the working state is a second state of operation, no fault and maintenance; or when the electrolytic cell group is in the non-second state, adding 1 to the planned closing group number, entering the next cycle until the working state is the second state, and determining that the planned closing group number at the moment is the target closing group number so as to determine the group number of the closed electrolytic cell group; when the plan group number is larger than N in the circulation process, subtracting N from the plan group number and then carrying out state judgment.
Optionally, the electrolytic cell array cooperative control apparatus 600 further includes a logic number setting module 606 for:
setting the logic number of the newly opened electrolytic cell group as a preset logic number;
and setting a logic number for each cell group of the target cell group according to the reverse sequence of the group numbers by taking the newly opened cell group as a reference.
Optionally, the group operational data comprises a total operational power of the target group of cells;
The group power allocation module 603 is specifically configured to:
comparing P sum with the total running power to determine a total power difference value;
determining the running load state of the target electrolytic cell group according to the total power difference value;
Based on the operating load status and the group operating data, a corresponding group power allocation value P i is determined.
Optionally, the aforementioned operating load condition includes load increase; the group operation data also comprises the number of the electrolytic cells in each target electrolytic cell group, the individual operation power of each electrolytic cell in each target electrolytic cell group and the total full load power of all target electrolytic cell groups;
The group power allocation module 603 is specifically configured to, when determining the corresponding group power allocation value P i based on the operating load status and the group operating data:
When the total power difference is smaller than the difference between the total running power and the total full power, for each target electrolytic cell group, according to the number of electrolytic cells and the individual running power of the electrolytic cells, determining an adjustable power value which does not generate the change of the number of the electrolytic cells in each target electrolytic cell group so as to judge whether the change of the running number of the electrolytic cells is necessary at present or not, and distributing group power in a corresponding power distribution mode to obtain a corresponding group power distribution value P i; or alternatively, the first and second heat exchangers may be,
And when the total power difference is greater than or equal to the difference between the total running power and the total full-load power, polling the target electrolytic tank group according to a mode that the logic number is from large to small, and sequentially setting the corresponding P i as overload power until the total power difference is distributed.
Optionally, the operating load condition includes load shedding;
The group power allocation module 603 is specifically configured to, when determining the corresponding group power allocation value P i based on the operating load status and the group operating data:
when the total power difference is smaller than the adjustable power value, polling the target electrolytic cell group according to a mode that the logic number is from small to large; when the target electrolytic cell group is in an operating state, subtracting the corresponding adjustable power value from the corresponding P i in sequence, and distributing the difference value to the corresponding target electrolytic cell group until the total power difference value is distributed; or alternatively, the first and second heat exchangers may be,
When the total power difference is greater than or equal to the sum of the adjustable power values, the target electrolytic cell group is polled from small to large according to the logic number; and when the target electrolytic tank group is in an operation state, setting the corresponding P i as the corresponding lower power limit in sequence until the total power difference is distributed.
Optionally, the individual operation data comprises the number of the electrolytic cells in an operation state, the overload power of each electrolytic cell and the lower power limit of each electrolytic cell;
the single power allocation module 604 is specifically configured to:
increasing the number of start-up cells to determine a first target cell in a third state where P i is greater than the product of the number of cells in the run state and the overload power of the cells; equally dividing P i into each first target electrolytic cell, and carrying out power maintenance judgment on each first target electrolytic cell to obtain a power distribution value of each electrolytic cell; or, in a fourth state in which P i is less than the product of the number of the electrolytic cells in the operating state and the lower power limit of the electrolytic cells, reducing the number of the electrolytic cells started up to determine a second target electrolytic cell; equally dividing P i into each second target electrolytic cell to obtain the power distribution value of each second target electrolytic cell; or alternatively, the first and second heat exchangers may be,
Determining the number of the electrolytic cells as the number of the third target electrolytic cells in the non-third state and the fourth state; and equally dividing P i into each third target electrolytic tank to obtain the power distribution value of each third target electrolytic tank.
Optionally, when P i is equally divided to each first target electrolytic cell and power retention determination is performed on each first target electrolytic cell, the single power distribution module 604 is specifically configured to:
for each first target electrolytic cell, determining a uniform power value as a power distribution value of the first target electrolytic cell when the power uniformly distributed to the first target electrolytic cell is greater than or equal to the individual operating power of the first target electrolytic cell; or alternatively, the first and second heat exchangers may be,
When the power equally divided to the first target electrolytic tank is smaller than the individual operation power of the first target electrolytic tank, the power distribution value of the operated electrolytic tank is kept as the individual operation power of the electrolytic tank at the current moment; and under the condition that the power of the newly opened electrolytic tank rises and the difference value between the power of the corresponding target electrolytic tank group and P i is smaller than a preset threshold value, determining the equipartition power value as the power distribution value of the operated electrolytic tank.
The apparatus performs functions similar to those provided above, and other functions may be found in the foregoing description and will not be repeated here.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application, as shown in fig. 7, an electronic device 700 of the present embodiment may include: a storage 701 and one or more processors 702.
The storage device 701 stores thereon a computer program that can be loaded by the processor 702 and execute the method in the above embodiment.
Wherein the processor 702 is coupled to the memory device 701, such as via a bus.
Optionally, the electronic device 700 may also include a transceiver. It should be noted that, in practical applications, the transceiver is not limited to one, and the structure of the electronic device 700 is not limited to the embodiment of the present application.
The Processor 702 may be a CPU (Central Processing Unit ), general purpose Processor, DSP (DIGITAL SIGNAL Processor, data signal Processor), ASIC (Application SPECIFIC INTEGRATED Circuit), FPGA (Field Programmable GATE ARRAY ) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor 702 may also be a combination of computing functions, e.g., including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.
A bus may include a path that communicates information between the components. The bus may be a PCI (PERIPHERAL COMPONENT INTERCONNECT, peripheral component interconnect standard) bus or an EISA (Extended Industry StandardArchitecture ) bus, or the like. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.
The storage 701 may be, but is not limited to, ROM (Read Only Memory) or other type of static storage device that may store static information and instructions, RAM (RandomAccess Memory ) or other type of dynamic storage device that may store information and instructions, EEPROM (ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY ), CD-ROM (Compact Disc Read Only Memory, compact disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The storage device 701 is used to store application program codes for executing the inventive arrangements and is controlled to be executed by the processor 702. The processor 702 is configured to execute application code stored in the storage device 701 to implement what is shown in the foregoing method embodiments.
Among them, electronic devices include, but are not limited to: mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. But may also be a server or the like. The electronic device shown in fig. 7 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the application.
The electronic device of the present embodiment may be used to execute the method of any of the foregoing embodiments, and its implementation principle and technical effects are similar, and will not be described herein.
The present application also provides a computer-readable storage medium storing a computer program capable of being loaded by a processor and executing the method in the above embodiments.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
The foregoing has outlined rather broadly the more detailed description of embodiments of the application in order that the detailed description of the principles and embodiments of the application may be implemented in conjunction with the detailed description of embodiments of the application that follows. Meanwhile, based on the idea of the present application, those skilled in the art can make changes or modifications on the specific embodiments and application scope of the present application, which belong to the protection scope of the present application. In view of the foregoing, this description should not be construed as limiting the application.
Claims (12)
1. A method for cooperative control of an electrolytic cell array, comprising:
acquiring group operation data of an electrolytic cell group, an electrolytic cell array total power instruction P sum and individual operation data of each electrolytic cell in the electrolytic cell group;
Determining an addition and subtraction group threshold value of the electrolytic cell group based on the group operation data and the P sum so as to determine an addition and subtraction group mode and a corresponding target electrolytic cell group;
Determining a total operating power difference based on the group operating data and the P sum to determine a group power split value P i for the target group of cells;
And determining a single power distribution value of each electrolytic tank based on the P i and the individual operation data so as to control each electrolytic tank to operate according to the corresponding single power distribution value.
2. The method of claim 1, wherein the group operation data includes the number of cell groups in operation, a lower power limit of each cell group, and an overload power of each cell group; the addition and subtraction group threshold value comprises a subtraction group threshold value and an addition group threshold value;
Wherein the determining, based on the set of operation data and the P sum, an add-subtract set threshold for the set of cells to determine an add-subtract set manner and a corresponding target set of cells includes:
When the P sum is smaller than the subtraction threshold value, reducing the number of the electrolytic cell groups to determine a first target electrolytic cell group, and setting P i of the closed electrolytic cell group to 0 to acquire group operation data of the first target electrolytic cell group and perform group power distribution; or when the P sum is larger than the grouping threshold, increasing the number of the electrolytic cell groups to determine a second target electrolytic cell group, setting the P i of the opened electrolytic cell group as the lowest operation load of a newly opened electrolytic cell group, so as to acquire group operation data of the second target electrolytic cell group and perform group power distribution; or when the P sum is larger than or equal to the minus group threshold value and smaller than or equal to the plus group threshold value, determining the number of the electrolytic tank groups as a third target electrolytic tank group number, and carrying out group power distribution.
3. The electrolytic cell array cooperative control method according to claim 2, further comprising:
Sequentially setting group numbers for the target electrolytic cell groups;
initializing plan opening group numbers and plan closing group numbers to be 1 respectively;
setting the cycle judgment times as N, judging the working state of a target electrolytic cell group with the same group number as the planned opening group number, wherein N is the total group number of the electrolytic cell group; when the working state is a first state which is not operated, is not faulty and is in an overhauling state, jumping out of the cycle; or when the current state is not the first state, adding 1 to the planned opening group number, and entering the next cycle until the working state is the first state, and determining that the planned opening group number at the moment is the target opening group number so as to determine the group number of the newly opened electrolytic cell group; when the planned open group number is larger than N in the circulation process, subtracting N from the planned close group number and then carrying out state judgment;
setting the cycle judgment times as N, judging the working state of a target electrolytic tank group with the same group number as the planning group number, and jumping out of the cycle when the working state is a second state of operation, no fault and maintenance; or when the current state is not the second state, adding 1 to the planning group number, entering the next cycle until the working state is the second state, and determining that the planning group number at the moment is the target group number so as to determine the group number of the closed electrolytic cell group; when the plan group number is larger than N in the circulation process, subtracting N from the plan group number and then carrying out state judgment.
4. A method of cooperative control of an electrolytic cell array according to claim 3, further comprising:
Setting the logic number of the newly opened electrolytic cell group as a preset logic number;
And setting a logic number for each electrolytic cell group of the target electrolytic cell group according to the reverse sequence of the group numbers by taking the newly opened electrolytic cell group as a reference.
5. The method of claim 1, wherein the group operational data comprises a total operational power of the target group of cells;
Wherein said determining an operational total power difference based on said set of operational data and said P sum to determine a set power split value P i for said target set of electrolytic cells comprises:
comparing the P sum with the total running power to determine a total power difference;
determining the running load state of the target electrolytic cell group according to the total power difference value;
Based on the operating load status and the set of operating data, a corresponding set of power allocation values P i are determined.
6. The electrolytic cell array cooperative control method of claim 5, wherein the operating load condition includes a load increase; the group operation data also comprises the number of the electrolytic cells in each target electrolytic cell group, the individual operation power of each electrolytic cell in each target electrolytic cell group and the total full load power of all target electrolytic cell groups;
Wherein the determining a corresponding component power allocation value P i based on the operating load status and the group operating data comprises:
When the total power difference is smaller than the difference between the total running power and the total full power, determining an adjustable power value which does not generate change of the number of the electrolytic cells in each target electrolytic cell group according to the number of the electrolytic cells and the individual running power of the electrolytic cells for each target electrolytic cell group so as to judge whether the change of the running number of the electrolytic cells is required to occur currently or not, and carrying out group power distribution in a corresponding power distribution mode to obtain a corresponding group power distribution value P i; or alternatively, the first and second heat exchangers may be,
And when the total power difference is greater than or equal to the difference between the total running power and the total full power, polling the target electrolytic cell group according to a logic number from large to small, and sequentially setting the corresponding P i as overload power until the total power difference is distributed.
7. The electrolytic cell array cooperative control method of claim 5, wherein the operating load condition includes load shedding;
Wherein the determining a corresponding component power allocation value P i based on the operating load status and the group operating data comprises:
When the total power difference is smaller than the adjustable power value, polling the target electrolytic cell group from small to large according to logic numbers; when the target electrolytic cell group is in an operating state, subtracting the corresponding adjustable power value from the corresponding P i in sequence, and distributing the difference value to the corresponding target electrolytic cell group until the total power difference value is distributed;
or when the total power difference is greater than or equal to the sum of the adjustable power values, polling the target electrolytic cell group from small to large according to logic numbers; and when the target electrolytic tank group is in an operation state, setting the corresponding P i as the corresponding lower power limit in sequence until the total power difference is distributed.
8. The method according to any one of claims 1 to 7, wherein the individual operation data includes the number of electrolytic cells in operation, overload power of each electrolytic cell, and lower power limit of each electrolytic cell;
Wherein, based on the P i and the individual operation data, determining a single power distribution value of each electrolytic cell, and distributing operation power according to the single power distribution value, comprising:
increasing the number of start-up electrolytic cells to determine a first target electrolytic cell in a third state where P i is greater than the product of the number of electrolytic cells in the operating state and the overload power of the electrolytic cells; equally dividing the P i to each first target electrolytic cell, and carrying out power maintenance judgment on each first target electrolytic cell to obtain a power distribution value of each electrolytic cell; or alternatively, the first and second heat exchangers may be,
In a fourth state that P i is smaller than the product of the number of the electrolytic cells in the running state and the lower power limit of the electrolytic cells, reducing the number of started electrolytic cells to determine a second target electrolytic cell; equally dividing the P i to each second target electrolytic cell to obtain the power distribution value of each second target electrolytic cell; or alternatively, the first and second heat exchangers may be,
Determining the number of the electrolytic cells as the number of third target electrolytic cells in a non-third state and a fourth state; and equally dividing P i into each third target electrolytic cell to obtain the power distribution value of each third target electrolytic cell.
9. The method of claim 8, wherein equally dividing the P i to each first target electrolytic cell, and obtaining the power distribution value of each electrolytic cell after performing the power retention determination on each first target electrolytic cell, includes:
For each first target electrolytic cell, determining an average power value as a power distribution value of the first target electrolytic cell when the power equally divided to the first target electrolytic cell is greater than or equal to the individual operating power of the first target electrolytic cell; or alternatively, the first and second heat exchangers may be,
When the power equally divided to the first target electrolytic tank is smaller than the individual operation power of the first target electrolytic tank, the power distribution value of the operated electrolytic tank is kept as the individual operation power of the electrolytic tank at the current moment; and under the condition that the power of the newly opened electrolytic tank rises and the difference value between the power of the corresponding target electrolytic tank group and the P i is smaller than a preset threshold value, determining the equipartition power value as the power distribution value of the operated electrolytic tank.
10. An electrolytic cell array cooperative control device, characterized by comprising:
The information acquisition module is used for acquiring group operation data of the electrolytic cell group, an overall power instruction P sum of the electrolytic cell array and individual operation data of each electrolytic cell in the electrolytic cell group;
The addition and subtraction group mode determining module is used for determining an addition and subtraction group threshold value of the electrolytic cell group based on the group operation data and the P sum so as to determine an addition and subtraction group mode and a corresponding target electrolytic cell group;
A group power distribution module for determining an operating total power difference based on the group operating data and the P sum to determine a group power distribution value P i for the target group of cells;
And the single power distribution module is used for determining a single power distribution value of each electrolytic tank based on the P i and the individual operation data so as to control each electrolytic tank to distribute operation power according to the corresponding single power distribution value.
11. An electronic device, comprising: a storage device, one or more processors;
The storage device is used for storing one or more programs;
A processor for executing one or more programs in the storage device, performing the cell array cooperative control method according to any one of claims 1 to 9.
12. A computer-readable storage medium, wherein the computer-readable storage medium has a computer program stored therein; the computer program, when executed by a processor, implements the method for cooperative control of an electrolytic cell array according to any one of claims 1 to 9.
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