Method and device for determining operation strategy of electrolytic aluminum industrial park

Abstract

The embodiment of the invention discloses a method and device for determining an operation strategy of an electrolytic aluminum industrial park, and the method comprises the steps: determining a target operation strategy enabling a preset target function to be minimized from a plurality of candidate operation strategies of the electrolytic aluminum industrial park; wherein the target function comprises a target function under the condition that the electrolytic aluminum industrial park operates according to a candidate operation strategy; the operation and maintenance cost of a photovoltaic unit and an energy storage system in the electrolytic aluminum industrial park, the cost of purchasing and selling electricity from a superior power grid of the electrolytic aluminum industrial park, the carbon emission cost of the electrolytic aluminum industrial park participating in carbon market transaction and the cost of the electrolytic aluminum industrial park participating in green certificate transaction are converted into a target operation strategy; and determining an operation strategy of the electrolytic aluminum industrial park. Thus, collaborative optimization of multiple factors such as photovoltaic, energy storage, power grid electricity purchase and sale, carbon transaction and green certificate transaction is realized, through linkage with a multi-transaction market, the comprehensive operation cost of the park is effectively reduced, the energy economy and environment compliance of the park are remarkably improved, and the effectiveness of operation strategy optimization can be improved.

Description

Technical Field

[0001] This invention relates to the field of operation optimization technology, and in particular to a method and apparatus for determining the operation strategy of an electrolytic aluminum industrial park. Background Technology

[0002] Current optimization strategies for electrolytic aluminum industrial parks primarily focus on participating in the electricity market, leveraging electricity price fluctuations to optimize power purchase strategies and reduce electricity costs. However, this single-market perspective has significant limitations. This isolated decision-making model fails to fully realize the park's resource optimization potential in a multi-market environment, resulting in low effectiveness of optimization strategies for electrolytic aluminum industrial parks. Summary of the Invention

[0003] The main objective of this invention is to provide a method and apparatus for determining the operation strategy of an electrolytic aluminum industrial park, which can solve the problem of low effectiveness of the optimized operation strategy of electrolytic aluminum industrial parks in the prior art.

[0004] To achieve the above objectives, the first aspect of the present invention provides a method for determining the operation strategy of an electrolytic aluminum industrial park, the method comprising: From multiple candidate operating strategies for the electrolytic aluminum industrial park, a target operating strategy that minimizes a preset objective function is determined. The objective function includes, under the condition that the electrolytic aluminum industrial park operates according to the candidate operating strategies, the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading. The target operation strategy is determined as the operation strategy of the electrolytic aluminum industrial park.

[0005] In some embodiments, the formula for calculating the carbon emission costs of the aforementioned electrolytic aluminum industrial park participating in carbon market trading is as follows: ; ; ; ; in, This indicates the carbon emission cost of the aforementioned electrolytic aluminum industrial park participating in carbon market trading. α Indicates the benchmark price for carbon trading. This represents the actual carbon trading volume of the aforementioned electrolytic aluminum industrial park. This represents the total carbon emissions of electrolytic aluminum users associated with the aforementioned electrolytic aluminum industrial park. This represents the total carbon emission allowances of the electrolytic aluminum enterprises associated with the aforementioned electrolytic aluminum industrial park. This indicates the number of green certificates purchased by the electrolytic aluminum industrial park from the green certificate market. This indicates the amount of carbon reduction corresponding to each green certificate. Indicates the first preset duration. This indicates the total number of electrolytic cells in the aforementioned aluminum electrolytic industrial park. Let represent the carbon emission quota for the i-th electrolytic cell series at time t, and k represent the electricity consumption per ton of aluminum by the electrolytic aluminum enterprise. This represents the carbon emission allowance value obtained per unit of electricity generated in the i-th electrolytic cell series. Δt represents the operating power of the i-th electrolytic cell series at time t, where Δt represents the unit time interval. This indicates the carbon emissions generated by the electrolytic aluminum industrial park using traditional energy sources for power generation. This indicates the carbon emissions generated by the use of new energy sources for power in the electrolytic aluminum industrial park.

[0006] In some embodiments, the cost of the aforementioned electrolytic aluminum industrial park participating in green certificate trading is calculated using the following formula: ; in, This indicates the cost of the electrolytic aluminum industrial park participating in green certificate trading. This represents the number of green certificates purchased by the electrolytic aluminum industrial park in the green certificate market at time t. This represents the time-sharing green certificate price at time t. This indicates the second preset duration.

[0007] In some embodiments, the formula for calculating the electricity purchase and sale cost from the upstream power grid for the aforementioned electrolytic aluminum industrial park is as follows: ); in, This represents the cost of purchasing and selling electricity from the upstream power grid for the aforementioned electrolytic aluminum industrial park. Indicates the second preset duration. This represents the time-of-use electricity price at time t. This represents the amount of electricity purchased by the electrolytic aluminum industrial park from the upper-level power grid at time t. This represents the time-of-use electricity price at time t. This represents the amount of electricity sold by the electrolytic aluminum industrial park to the upstream power grid at time t.

[0008] In some embodiments, the calculation formula for the operation and maintenance costs of photovoltaic units and energy storage systems within the aforementioned electrolytic aluminum industrial park is as follows: + + ) in, This represents the operation and maintenance cost of the photovoltaic units and energy storage systems within the aforementioned electrolytic aluminum industrial park. Indicates the second preset duration. This represents the unit operation and maintenance cost of the photovoltaic units within the aforementioned electrolytic aluminum industrial park. This represents the power generation capacity of the photovoltaic unit at time t. This represents the unit operation and maintenance cost of batteries within the aforementioned electrolytic aluminum industrial park. This represents the charging power of the battery at time t. This represents the discharge power of the battery at time t.

[0009] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum industrial park meets the constraints for participating in green certificate trading; the constraints for participating in green certificate trading are as follows: ; ; ; in, This represents the number of green certificates required for electrolytic aluminum enterprises associated with the aforementioned electrolytic aluminum industrial park to meet their consumption responsibility weights, where ψ represents the green certificate quota coefficient. Indicates the first preset duration. This indicates the total number of electrolytic cells in the aforementioned aluminum electrolytic industrial park. This represents the operating power of the i-th electrolytic cell series at time t. This represents the power generation capacity of the photovoltaic units within the electrolytic aluminum industrial park at time t. This represents the number of green certificates purchased by the electrolytic aluminum industrial park at time t in the green certificate market.

[0010] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum industrial park meets the constraints for participating in the power purchase of the upper-level power grid; the constraints for participating in the power purchase of the upper-level power grid are as follows: ; ; in, This represents the amount of electricity purchased by the electrolytic aluminum industrial park from the upper-level power grid at time t. This represents the amount of electricity sold by the electrolytic aluminum industrial park to the upstream power grid at time t. This indicates the maximum amount of electricity the electrolytic aluminum industrial park can purchase from the upstream power grid. This represents the electricity purchase flag value at time t, indicating whether the electrolytic aluminum industrial park has purchased electricity at time t. This indicates the maximum amount of electricity that the electrolytic aluminum industrial park can sell to the upstream power grid. The value represents the electricity sales flag at time t, indicating whether the electrolytic aluminum industrial park is selling electricity at time t.

[0011] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum industrial park satisfies the electrolytic aluminum load power constraint; the electrolytic aluminum load power constraint is as follows: ; ; ; in, This represents the production power of the nth electrolytic aluminum production series in the electrolytic aluminum industrial park at time t. This represents the series current of the nth electrolytic aluminum production series at time t. This represents the equivalent resistance of the nth electrolytic aluminum production series. This represents the equivalent back electromotive force of the nth electrolytic aluminum production series. This represents the lower limit of the production power of the nth electrolytic aluminum production series. This represents the upper limit of the production power of the nth electrolytic aluminum production series. This represents the lower limit value of the series current for the nth electrolytic aluminum production series. This represents the upper limit of the series current for the nth electrolytic aluminum production series.

[0012] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum load power of the electrolytic aluminum industrial park satisfies the electrolytic aluminum load electro-thermal coordination constraint; the electrolytic aluminum load electro-thermal coordination constraint is as follows: ; ; ; ; in, This represents the production power of the nth electrolytic aluminum production series in the electrolytic aluminum industrial park at time t. This represents the lower limit of the power output of the nth electrolytic aluminum production series, under the influence of the electrolytic cell temperature at time t. This represents the upper limit of the power output of the nth electrolytic aluminum production series, under the influence of the electrolytic cell temperature at time t. This represents the production power of the nth electrolytic aluminum production series in the electrolytic aluminum industrial park at time t-1. This indicates the specific heat capacity coefficient of cryolite. Indicates the quality of cryolite. This represents the upper limit of the electrolytic cell temperature for the nth electrolytic aluminum production series. This represents the lower limit of the electrolytic cell temperature in the nth electrolytic aluminum production series. Δt represents the temperature of the electrolytic cell in the nth electrolytic aluminum production series at time t, and Δt represents the unit time interval.

[0013] To achieve the above objectives, a second aspect of the present invention provides an apparatus for determining the operation strategy of an electrolytic aluminum industrial park, the apparatus comprising: An optimization module is used to determine, from multiple candidate operating strategies of the electrolytic aluminum industrial park, a target operating strategy that minimizes a preset objective function. The objective function includes, under the condition that the electrolytic aluminum industrial park operates according to the candidate operating strategies, the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading.

[0014] The determination module is used to determine the target operating strategy as the operating strategy of the electrolytic aluminum industrial park.

[0015] To achieve the above objectives, a third aspect of the present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, causes the processor to perform the following steps: From multiple candidate operating strategies for the electrolytic aluminum industrial park, a target operating strategy that minimizes a preset objective function is determined. The objective function includes, under the condition that the electrolytic aluminum industrial park operates according to the candidate operating strategies, the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading. The target operation strategy is determined as the operation strategy of the electrolytic aluminum industrial park.

[0016] To achieve the above objectives, a fourth aspect of the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor causes the processor to perform the following steps: From multiple candidate operating strategies for the electrolytic aluminum industrial park, a target operating strategy that minimizes a preset objective function is determined. The objective function includes, under the condition that the electrolytic aluminum industrial park operates according to the candidate operating strategies, the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading. The target operation strategy is determined as the operation strategy of the electrolytic aluminum industrial park.

[0017] The embodiments of the present invention have the following beneficial effects: This invention provides a method and apparatus for determining the operation strategy of an electrolytic aluminum industrial park. By selecting from multiple candidate operation strategies for the industrial park, a target operation strategy that minimizes a preset objective function is determined. The objective function includes the operation and maintenance costs of photovoltaic units and energy storage systems within the industrial park, the cost of purchasing and selling electricity from the grid, the carbon emission costs of participating in carbon market trading, and the cost of participating in green certificate trading, all assuming the industrial park operates under the candidate strategies. The target operation strategy is then determined as the final operation strategy for the industrial park. Thus, by constructing and solving a comprehensive objective function encompassing the operation and maintenance of photovoltaic and energy storage systems, the cost of purchasing and selling electricity from the grid, carbon market trading, and green certificate trading, the operation strategy that minimizes these costs is determined as the final operation plan for the park. This achieves synergistic optimization of multiple elements, including photovoltaics, energy storage, grid electricity purchase and sale, carbon trading, and green certificate trading. Through linkage with multiple trading markets, it effectively reduces the overall operating costs of the park, significantly improves the park's energy economy and environmental compliance, and enhances the effectiveness of operation strategy optimization. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] in: Figure 1 This is a flowchart illustrating the method for determining the operation strategy of an electrolytic aluminum industrial park in an embodiment of the present invention. Figure 2 This is a schematic diagram of an electrolytic aluminum industrial park in an embodiment of the present invention; Figure 3This is a flowchart illustrating the optimized operation method of an electrolytic aluminum industrial park considering electricity-carbon-green certificate trading in an embodiment of the present invention. Figure 4 This is a structural block diagram of the device for determining the operation strategy of an electrolytic aluminum industrial park in an embodiment of the present invention; Figure 5 This is a structural block diagram of a computer device in an embodiment of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In one embodiment, a method for determining the operation strategy of an electrolytic aluminum industrial park is provided. This method can be applied to computer equipment, which can be a terminal or a server. This embodiment uses an application to a terminal as an example. Figure 1 As shown, Figure 1 This is a flowchart illustrating the method for determining the operation strategy of an electrolytic aluminum industrial park according to an embodiment of this application. The method for determining the operation strategy of an electrolytic aluminum industrial park specifically includes the following steps S101-S102.

[0022] Step S101: From multiple candidate operating strategies of the electrolytic aluminum industrial park, determine the target operating strategy that minimizes the preset objective function.

[0023] The objective function includes the operation and maintenance costs of photovoltaic units and energy storage systems in the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading, all assuming the electrolytic aluminum industrial park operates under the candidate operating strategy.

[0024] The aforementioned electrolytic aluminum industrial park can be understood as a modern industrial cluster ecosystem centered on electrolytic aluminum production, integrating energy supply, raw material transportation, auxiliary production, waste treatment, and downstream deep processing.

[0025] The operation strategy can include the operating status of each piece of equipment in the electrolytic aluminum industrial park at any given moment, such as switch status, operating power, etc.

[0026] The objective function described above can be used to calculate the operation and maintenance costs of photovoltaic units and energy storage systems within an electrolytic aluminum industrial park, assuming they operate under candidate operating strategies. The cost of purchasing and selling electricity from the upstream power grid for the electrolytic aluminum industrial park Carbon emission costs of electrolytic aluminum industrial parks participating in carbon market trading And the cost of participating in green certificate trading in electrolytic aluminum industrial parks sum.

[0027] The objective function can be expressed as follows: .

[0028] For example, multiple candidate operating strategies include candidate operating strategy A, candidate operating strategy B, and candidate operating strategy C. For candidate operating strategy A, an objective function is used to calculate the operation and maintenance costs of photovoltaic units and energy storage systems in the electrolytic aluminum industrial park when operating under candidate operating strategy A. The cost of purchasing and selling electricity from the upstream power grid for the electrolytic aluminum industrial park Carbon emission costs of electrolytic aluminum industrial parks participating in carbon market trading And the cost of participating in green certificate trading in electrolytic aluminum industrial parks sum For candidate operating strategy B, the objective function is used to calculate the operation and maintenance costs of photovoltaic units and energy storage systems in the electrolytic aluminum industrial park under candidate operating strategy B. The cost of purchasing and selling electricity from the upstream power grid for the electrolytic aluminum industrial park Carbon emission costs of electrolytic aluminum industrial parks participating in carbon market trading And the cost of participating in green certificate trading in electrolytic aluminum industrial parks sum For candidate operating strategy C, the objective function is used to calculate the operation and maintenance costs of photovoltaic units and energy storage systems in the electrolytic aluminum industrial park under candidate operating strategy C. The cost of purchasing and selling electricity from the upstream power grid for the electrolytic aluminum industrial park Carbon emission costs of electrolytic aluminum industrial parks participating in carbon market trading And the cost of participating in green certificate trading in electrolytic aluminum industrial parks sum ,like , If the minimum value is found, candidate running strategy C is determined as the target running strategy.

[0029] Step S102: The target operating strategy is determined as the operating strategy of the electrolytic aluminum industrial park.

[0030] For example, if candidate operating strategy C is the target operating strategy, then candidate operating strategy C will be determined as the operating strategy of the electrolytic aluminum industrial park, and the electrolytic aluminum industrial park can operate with candidate operating strategy C.

[0031] In this embodiment, a comprehensive objective function encompassing the operation and maintenance of photovoltaic and energy storage, electricity purchase and sale from the grid, carbon market trading, and green certificate trading costs is constructed and solved. The operational strategy that minimizes this objective function is determined as the final operational plan for the park. This achieves synergistic optimization of multiple elements, including photovoltaic, energy storage, grid electricity purchase and sale, carbon trading, and green certificate trading. By linking with multiple trading markets, it effectively reduces the overall operating costs of the park, significantly improves the park's energy economy and environmental compliance, and enhances the effectiveness of operational strategy optimization.

[0032] In some embodiments, the formula for calculating the carbon emission costs of an electrolytic aluminum industrial park participating in carbon market trading can be as follows: ; ; ; ; in, This indicates the carbon emission costs of an electrolytic aluminum industrial park participating in carbon market trading. α Indicates the benchmark price for carbon trading. This indicates the actual carbon trading volume in the electrolytic aluminum industrial park. This represents the total carbon emissions of electrolytic aluminum users associated with the electrolytic aluminum industrial park. This represents the total carbon emission allowances of electrolytic aluminum enterprises associated with the electrolytic aluminum industrial park. This indicates the number of green certificates purchased by the electrolytic aluminum industrial park from the green certificate market. This indicates the amount of carbon reduction corresponding to each green certificate. Indicates the first preset duration. This indicates the total number of electrolytic cells in the aluminum electrolytic industrial park. Let represent the carbon emission allowance for the i-th electrolytic cell series at time t, and k represent the electricity consumption per ton of aluminum by the aluminum electrolytic enterprise. This represents the carbon emission allowance value obtained per unit of electricity generated in the i-th electrolytic cell series. Δt represents the operating power of the i-th electrolytic cell series at time t, where Δt represents the unit time interval. This indicates the carbon emissions generated by the use of traditional energy sources for power generation in the electrolytic aluminum industrial park. This indicates the carbon emissions generated by the use of new energy sources in the electrolytic aluminum industrial park.

[0033] The electricity consumption per ton of aluminum mentioned above can be understood as the amount of electricity required to produce 1 ton of metallic aluminum.

[0034] The above It can be, but is not limited to, a value of 24.

[0035] In some embodiments, the formula for calculating the total carbon emissions Q of electrolytic aluminum users associated with an electrolytic aluminum industrial park can be as follows: ; ; ; ; ; in, Let be the carbon emissions of the i-th electrolytic cell series at time t due to raw material consumption. EF c It is the carbon dioxide emission factor consumed by carbon anodes. NC c This indicates the net consumption of carbon anodes per ton of aluminum. A c This indicates the average ash content of the carbon anode. S c This indicates the average sulfur content of the carbon anode. EF CF4 The CF4 emission factor representing the anode effect. EF C2F6 The C2F6 emission factor representing the anode effect, w This indicates the carbon emission factor of the node where the park is located. 6500 and 9200 are the GWP values ​​for CF4 and C2F6, respectively.

[0036] The aforementioned net consumption of carbon anodes per ton of aluminum can refer to the theoretically required mass of carbon anodes (excluding impurities) to produce 1 ton of metallic aluminum.

[0037] In some embodiments, the formula for calculating the cost of an electrolytic aluminum industrial park participating in green certificate trading can be as follows: ; in, This indicates the cost for electrolytic aluminum industrial parks to participate in green certificate trading. This represents the number of green certificates purchased by the electrolytic aluminum industrial park in the green certificate market at time t. This represents the time-sharing green certificate price at time t. This indicates the second preset duration.

[0038] It can be equal to , It can be, but is not limited to, a value of 24.

[0039] In some embodiments, the formula for calculating the cost of purchasing and selling electricity from the upstream power grid for an electrolytic aluminum industrial park can be as follows: ); in, This indicates the cost of purchasing and selling electricity from the upstream power grid for the electrolytic aluminum industrial park. Indicates the second preset duration. This represents the time-of-use electricity price at time t. This represents the amount of electricity purchased by the electrolytic aluminum industrial park from the upper-level power grid at time t. This represents the time-of-use electricity price at time t. This represents the amount of electricity sold by the electrolytic aluminum industrial park to the upper-level power grid at time t.

[0040] In some embodiments, the formula for calculating the operation and maintenance costs of photovoltaic units and energy storage systems within an electrolytic aluminum industrial park can be as follows: + + ) in, This indicates the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park. Indicates the second preset duration. This represents the unit operation and maintenance cost of photovoltaic units within the electrolytic aluminum industrial park. This represents the power generation of the photovoltaic unit at time t. This indicates the unit operation and maintenance cost of batteries within the electrolytic aluminum industrial park. This represents the charging power of the battery at time t. This represents the battery's discharge power at time t.

[0041] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park operates under the candidate operating strategy, the electrolytic aluminum industrial park meets the constraints for participating in green certificate trading.

[0042] The constraints on participation in green certificate trading by electrolytic aluminum industrial parks are as follows: ; ; ; in, This represents the number of green certificates required for electrolytic aluminum enterprises associated with the electrolytic aluminum industrial park to meet their consumption responsibility weights, where ψ represents the preset green certificate quota coefficient. Indicates the first preset duration. This indicates the total number of electrolytic cells in the aluminum electrolytic industrial park. This represents the operating power of the i-th electrolytic cell series at time t. This represents the power generation capacity of the photovoltaic units within the electrolytic aluminum industrial park at time t. This represents the number of green certificates purchased by the electrolytic aluminum industrial park in the green certificate market at time t.

[0043] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park operates under the candidate operating strategy, the electrolytic aluminum industrial park meets the constraints of participating in the power purchase of the upper-level power grid.

[0044] The constraints on the participation of electrolytic aluminum industrial parks in power purchases from the upper-level power grid are as follows: ; ; in, This represents the amount of electricity purchased by the electrolytic aluminum industrial park from the upper-level power grid at time t. This represents the amount of electricity sold by the electrolytic aluminum industrial park to the upper-level power grid at time t. This indicates the maximum amount of electricity that the electrolytic aluminum industrial park can purchase from the upper-level power grid. This represents the electricity purchase flag value at time t, indicating whether the electrolytic aluminum industrial park has purchased electricity at time t. This indicates the maximum amount of electricity that the electrolytic aluminum industrial park can sell to the upper-level power grid. This represents the electricity sales flag value at time t, which indicates whether the electrolytic aluminum industrial park is selling electricity at time t.

[0045] The electricity purchase and sales flag values ​​can take either a first target value or a second target value. The first target value represents purchasing / selling electricity, and the second target value represents not purchasing / selling electricity. The first target value can be 1, and the second target value can be 0. That is, both the electricity purchase and sales flags can be 0-1 variables. The electricity purchase and sales flags are binary decision variables, and their quantified values ​​(0 or 1) directly represent the decision of the electrolytic aluminum industrial park at a specific time period: "to purchase (sell) electricity" or "not to purchase (sell) electricity." Since the purchase and sale of electricity in the electrolytic aluminum industrial park generally do not occur simultaneously, it is either purchasing or selling electricity. Therefore, the electricity purchase and sales flag values ​​will not have the same value at the same time t.

[0046] For example, if the electrolytic aluminum industrial park purchases electricity at time t, then... For 1, If the value is 0, and the electricity sold by the electrolytic aluminum industrial park at time t, then... For 1, It is 0.

[0047] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park is operating under the candidate operating strategy, the electrolytic aluminum industrial park meets the electrolytic aluminum load power constraint.

[0048] The load power constraints for electrolytic aluminum are as follows: ; ; ; in, This represents the production power of the nth electrolytic aluminum production line in the electrolytic aluminum industrial park at time t. This represents the series current of the nth electrolytic aluminum production series at time t. This represents the equivalent resistance of the nth electrolytic aluminum production series. Let represent the equivalent back electromotive force of the nth electrolytic aluminum production series. This represents the lower limit of the production power of the nth electrolytic aluminum production series. This represents the upper limit of the production power of the nth electrolytic aluminum production series. This represents the lower limit of the series current for the nth electrolytic aluminum production series. This represents the upper limit of the series current for the nth electrolytic aluminum production series.

[0049] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park is operating under the candidate operating strategy, the electrolytic aluminum load power of the electrolytic aluminum industrial park satisfies the electro-thermal coordination constraint of the electrolytic aluminum load.

[0050] The electro-thermal load constraints for electrolytic aluminum are as follows: ; ; ; ; in, This represents the production power of the nth electrolytic aluminum production line in the electrolytic aluminum industrial park at time t. This represents the lower limit of the power output of the nth electrolytic aluminum production series, under the influence of the electrolytic cell temperature at time t. This represents the upper limit of the power output of the nth electrolytic aluminum production series, under the influence of the electrolytic cell temperature at time t. This represents the production power of the nth electrolytic aluminum production line in the electrolytic aluminum industrial park at time t-1. This indicates the specific heat capacity coefficient of cryolite. Indicates the quality of cryolite. This represents the upper limit of the electrolytic cell temperature for the nth electrolytic aluminum production series. This represents the lower limit of the electrolytic cell temperature for the nth electrolytic aluminum production series. Δt represents the temperature of the electrolytic cell in the nth electrolytic aluminum production series at time t, and Δt represents the unit time interval.

[0051] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park operates under the candidate operating strategy, the electrolytic aluminum industrial park meets the electrolytic aluminum load operating state constraints.

[0052] The operating conditions constraints for electrolytic aluminum load are as follows: ; ; + )≤ ; ; in, This represents the first state value at time t. The first state value indicates whether the nth electrolytic aluminum production line in the electrolytic aluminum industrial park is in a power increase state. This represents the second state value at time t. The second state value indicates whether the nth electrolytic aluminum production series is in a state of power decline. This represents the third state value at time t. The third state value indicates whether the nth electrolytic aluminum production series is in a stable operating state. This indicates the rate at which the electrolytic aluminum load adjusts upward within a unit time step. This indicates the rate at which the electrolytic aluminum load is adjusted downwards within a unit time step, where T represents the preset operating cycle. This represents the upper limit of the number of load adjustments for the nth electrolytic aluminum production series within the operating cycle. This represents the production power of the nth electrolytic aluminum production series at time t. This represents the production power of the nth electrolytic aluminum production series at time t-1, and M represents a preset constant.

[0053] In one implementation, the values ​​of the first state value, the second state value, and the third state value can be a third target value or a fourth target value, wherein the third target value indicates being in a certain state, the fourth target value indicates not being in a certain state, the third target value can be equal to the first target value, and the fourth target value can be equal to the second target value. For example, assuming the third target value is 1 and the fourth target value is 0, when the nth electrolytic aluminum production line in the electrolytic aluminum industrial park is in a power-increasing state at time t, the first state value at time t is 1; when the nth electrolytic aluminum production line in the electrolytic aluminum industrial park is not in a power-increasing state at time t, the first state value at time t is 0; when the nth electrolytic aluminum production line is in a power-decreasing state at time t, the second state value at time t is 1; when the nth electrolytic aluminum production line is not in a power-decreasing state at time t, the second state value at time t is 0; when the nth electrolytic aluminum production line is in a stable operating state at time t, the third state value at time t is 1; when the nth electrolytic aluminum production line is not in a stable operating state at time t, the third state value at time t is 0.

[0054] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park is operating under the candidate operating strategy, the electrolytic aluminum industrial park meets the capacity constraints.

[0055] The capacity constraints are as follows: ; ; ; in, This represents the production efficiency of the nth electrolytic aluminum production line in the electrolytic aluminum industrial park at time t. This represents the rated production efficiency of the nth electrolytic aluminum production series. This represents the temperature of the electrolytic cell in the nth electrolytic aluminum production series at time t, where T represents the preset operating cycle. This represents the rated total output of the nth electrolytic aluminum production series within the operating cycle. This represents the total output of the nth electrolytic aluminum production series at time t. This indicates the number of electrolytic cells included in the nth electrolytic aluminum production series. This indicates the rated production temperature of the nth electrolytic aluminum production series. This represents the series current of the nth electrolytic aluminum production series at time t. This indicates the electrochemical equivalent of electrolytic aluminum.

[0056] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park is operating under the candidate operating strategy, the electrolytic aluminum industrial park satisfies the power balance constraint.

[0057] The power balance constraints are as follows: ; in, This represents the operating power of the i-th electrolytic cell series at time t. This represents the discharge power of the batteries in the electrolytic aluminum industrial park at time t. This represents the charging power of the battery at time t. This represents the amount of electricity purchased by the electrolytic aluminum industrial park from the upper-level power grid at time t. This represents the amount of electricity sold by the electrolytic aluminum industrial park to the upper-level power grid at time t. This represents the power generation capacity of the photovoltaic units in the electrolytic aluminum industrial park at time t.

[0058] In some embodiments, for each candidate operating strategy, when the electrolytic aluminum industrial park is operating under the candidate operating strategy, the electrolytic aluminum industrial park meets the battery operating constraints.

[0059] The battery operating constraints are as follows: ; ; + =1; ; ; in, This represents the discharge power of the batteries in the electrolytic aluminum industrial park at time t. This represents the charging power of the battery at time t. This indicates the maximum charging and discharging power of the battery. This represents the charging flag value, which indicates whether the battery is charging at time t. This represents the discharge flag value, which indicates whether the battery is discharging at time t. This represents the state of charge of the battery at time t. This represents the state of charge of the battery at time t-1. This indicates the charging efficiency of the battery. This represents the charging power of the battery at time t. This represents the battery's discharge power at time t. This indicates the battery's discharge power. This represents the minimum state of charge of the battery. This indicates the maximum value of the battery's state of charge.

[0060] The charging and discharging flag values ​​can be either the fifth or sixth target value. The fifth target value represents charging / discharging, and the sixth target value represents no charging / no discharging. The fifth target value can be equal to the first target value, and the sixth target value can be equal to the second target value. The fifth target value can be 1, and the sixth target value can be 0, meaning both the charging and discharging flag values ​​can be 0-1 variables. Since battery charging and discharging generally do not occur simultaneously, the charging and discharging flag values ​​will not have the same value at the same time t.

[0061] For example, if the battery is charging at time t, then... For 1, If the value is 0, and the battery discharges at time t, then... For 1, It is 0.

[0062] To better understand the above method, the embodiments of this application provide the following complete embodiments to describe the method: This invention focuses on an optimized operation method for electrolytic aluminum industrial parks that considers electricity-carbon-green certificate trading, and investigates existing technical solutions from two aspects: Firstly, in terms of modeling electrolytic aluminum load, existing research mainly utilizes the flexible regulation capability of electrolytic aluminum load to participate in electricity market transactions such as peak shaving and frequency regulation.

[0063] Secondly, regarding load participation in the electricity-carbon-green certificate market, existing research mainly focuses on the trading decisions of integrated energy systems participating in the electricity-carbon-green certificate market.

[0064] This invention focuses on an optimized operation method for electrolytic aluminum industrial parks that considers electricity-carbon-green certificate trading, and investigates existing technical solutions from two aspects: Firstly, in terms of modeling electrolytic aluminum load, existing research mainly utilizes the flexible regulation capability of electrolytic aluminum load to participate in electricity market transactions such as peak shaving and frequency regulation.

[0065] Secondly, regarding load participation in the electricity-carbon-green certificate market, existing research mainly focuses on the trading decisions of integrated energy systems participating in the electricity-carbon-green certificate market.

[0066] This invention addresses the increased costs faced by electrolytic aluminum industrial parks in fulfilling their renewable energy consumption responsibilities and carbon quota settlements when participating in green certificate and carbon trading. Taking into account the characteristics of electrolytic aluminum loads, it coordinates with distributed power sources within the park to jointly participate in the optimized operation within the electrolytic aluminum industrial park, thereby minimizing the costs for the electrolytic aluminum industrial park to participate in the electricity-carbon-green certificate market.

[0067] The purpose of this invention is to provide an optimized operation method for electrolytic aluminum industrial parks that takes into account electricity-carbon-green certificate trading.

[0068] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the following description is provided in conjunction with... Figure 2 The electrolytic aluminum industrial park and specific embodiments shown in the illustrations provide a more detailed description of the present invention. Figure 2 This is a schematic diagram of an electrolytic aluminum industrial park provided in an embodiment of this application. The electrolytic aluminum industrial park includes at least electrical busbars, a power grid, batteries, self-contained photovoltaic systems (photovoltaic generators / photovoltaic power generation systems), and electrolytic aluminum electrolysis cell equipment (such as…). Figure 2 (The electrolytic aluminum load shown).

[0069] Figure 3 A flowchart illustrating an optimized operation method for an electrolytic aluminum industrial park that considers electricity-carbon-green certificate trading, provided as an embodiment of this application.

[0070] like Figure 3 As shown, this invention provides an optimized operation method for electrolytic aluminum industrial parks that considers electricity-carbon-green certificate trading (i.e., a method for determining the operation strategy of electrolytic aluminum industrial parks). The optimized operation method for electrolytic aluminum industrial parks that considers electricity-carbon-green certificate trading includes: Step 100: Collect and input data such as the number of electrolytic aluminum production series, the number and capacity of electrolytic cells, the time-of-use electricity price of the upstream power grid, the carbon market base price, the green certificate price, and the parameters of distributed power sources in the industrial park (equivalent to...). Figure 3 Step 100 in the middle). Step 200: Based on the actual electrolytic aluminum production process, construct an electrolytic aluminum load model (equivalent to...). Figure 3 Step 200 in the middle). Step 300: Based on the electricity market, carbon market, and green certificate market mechanisms, construct the constraints for electrolytic aluminum industrial parks to participate in carbon and green certificate trading; Step 400: Considering the operational constraints of various distributed power sources, production safety in the electrolytic aluminum industrial park, and the responsibility for renewable energy consumption, and with the objective of minimizing the sum of the costs of purchasing and selling electricity from the upstream grid, the operation and maintenance costs of distributed power sources (i.e., the operation and maintenance costs of the photovoltaic units and energy storage systems mentioned above), and the costs of participating in the carbon market and the green certificate market, construct an optimized operation model for the electrolytic aluminum industrial park that considers the impact of electricity-carbon-green certificate trading (the above objective function), and solve for the optimal operation scheme of the electrolytic aluminum industrial park (equivalent to...). Figure 3 Step 400 in the middle). Step 200: Based on the actual electrolytic aluminum production process, construct an electrolytic aluminum load model, specifically including: The electrolytic aluminum production series (hereinafter referred to as the production series) consists of multiple electrolytic cells connected in series, and its total power is considered as the electrolytic aluminum load, which has the characteristic of stable power consumption. Considering that the energy consumption of the electrolytic production process accounts for more than 95% of the total power consumption of the electrolytic aluminum industrial park, the EAIP load in this embodiment only considers the power consumed by the electrolytic aluminum production equipment, that is, the electrolytic aluminum load with the electrolytic cells as the core.

[0071] Electrolytic aluminum is smelted in electrolytic cells within an electrolytic aluminum production series using the cryolite-alumina molten salt electrolysis method. This method uses alumina as the solute and cryolite mixed with fluoride salts as a solvent to lower the melting point of alumina. The electrolyte, composed of these two components, is smelted in an electrolytic cell through which a direct current of several hundred kiloamperes is passed.

[0072] The electrolytic aluminum load serves as a thermal energy storage load. At a temperature of 950-970℃, the alumina in the electrolyte reacts chemically with the anode carbon block to displace molten aluminum. Considering its large thermal inertia time coefficient, a certain degree of power reduction in a short period of time will not seriously affect the production efficiency of the electrolytic cell. This ensures that the cryolite in the electrolyte remains in a molten state, allowing the electrolytic aluminum reaction to proceed stably and continuously.

[0073] In summary, electrolytic aluminum can serve as a flexible industrial load providing support for the power grid. While continuous and smooth load regulation over a wide range can be achieved by adjusting the taps of on-load transformers and saturated reactors, the time required for complete start-up and shutdown of electrolytic aluminum production is long and costly. Therefore, this embodiment considers the electrolytic aluminum industrial load as an uninterrupted, flexible load whose power can only be adjusted within a certain range.

[0074] The equivalent circuit diagram of the electrolytic aluminum production series shows that there is an approximately square relationship between the production power and the series current. The load power constraint for electrolytic aluminum is constructed as follows: ; ; ; in, P Al,n,t , I Al,n,t They are respectively t Time of the first n Production power and current of the electrolytic aluminum production series; R m,n , E m,n The first n Equivalent resistance and equivalent back electromotive force of the production series; , The first n The inherent upper and lower limits of the production series power; , The first n The inherent upper and lower limits of the production series current.

[0075] Considering the thermal inertia effect of the electrolytic cell, reducing the electrolytic aluminum load in a short period of time can simultaneously achieve energy conservation and stable production in the industrial park. The electro-thermal synergistic constraint of the electrolytic aluminum load is constructed as follows: ; ; ; ; in, , The first n Production series of electrolytic cells t The upper and lower limits of power affected by temperature at any given time; c e , m e These are the specific heat capacity coefficient and mass of cryolite, respectively; , The first n The upper and lower temperature limits for the production series, i.e., the upper and lower melting points of alumina; T Al,n,t for t Time of the first n Temperature of the production series of electrolytic cells.

[0076] By introducing molar variables to represent the rising, falling, and stable operating states of the electrolytic aluminum load, the coupling relationship between these states and production operation is analyzed, and the following constraints on the operating state of the electrolytic aluminum load are constructed: ; ; ; ; Among them, Boolean variables δ up,n,t , δ down,n,t , δ work,n,t They are respectively t Time of the first n The power increase state, power decrease state, and stable working state of the electrolytic aluminum production series; R Al,up , R Al,down These represent the speed at which the electrolytic aluminum load is adjusted up and down per unit time step; N re,n For the firstn The upper limit of the number of load adjustments during the operating cycle of an electrolytic aluminum production line; M A sufficiently large constant is introduced to describe the stable operating state of the electrolytic aluminum production series.

[0077] The total capacity of an electrolytic aluminum industrial park is the sum of the output of each electrolytic cell. Maintaining a constant total capacity is crucial to ensuring the park's economic benefits. However, when the electrolytic aluminum load participates in the park's optimized operation, temperature changes caused by power fluctuations affect the production efficiency of the electrolysis process. The capacity constraints are as follows: ; ; ; in, η n,t for t Time of the first n Production efficiency of the electrolytic aluminum production line; η N,n For the first n The rated production efficiency of the electrolytic aluminum production series is typically 94%. M Al,N,n , M Al,n,t The first n The rated total output of the electrolytic aluminum production series during its operating cycle. t Output at any given moment; n n For the first n The number of electrolytic cells in a single aluminum electrolytic production line; T N,n For the first n The rated production temperature of the electrolytic aluminum production series; K Al It is the electrochemical equivalent of electrolytic aluminum.

[0078] Step 300: Based on the electricity market, carbon market, and green certificate market mechanisms, construct constraints for electrolytic aluminum industrial users to participate in electricity-carbon-green certificate market transactions, specifically including: A comprehensive carbon emission model for the electrolytic aluminum industrial park was constructed, including an indirect carbon emission model for purchased electricity consumption and a direct carbon emission model for raw material consumption, as the basis for its participation in electricity-carbon-green certificate trading.

[0079] ; ; ; ; ; in,w The carbon emission factor of the node where the park is located. P bgrid,t The park purchases electricity from the higher-level power grid; Let be the carbon emissions of the i-th electrolytic cell series at time t due to raw material consumption; EF c It is the carbon dioxide emission factor consumed by the carbon anode. NC c Net consumption per ton of aluminum carbon anode; A c This refers to the average ash content of the carbon anode; S c 6500 represents the average sulfur content of the carbon anode; 9200 represents the GWP values ​​of CF4 and C2F6, respectively. EF CF4 CF4 emission factor for the anode effect EF C2F6 The C2F6 emission factor is the anodic effect. Q This represents the total carbon emissions of the electrolytic aluminum industrial park.

[0080] The primary allocation method for carbon allowances is free allocation, using a baseline method. Electrolytic aluminum industrial parks can buy or sell carbon allowances as needed. Furthermore, to avoid double-counting of carbon emissions, green certificates can offset a portion of carbon emissions. Based on the above mechanisms, constraints are established for electrolytic aluminum industrial parks participating in carbon market trading. ; ; ; ; in, The total carbon emission allowance for electrolytic aluminum enterprises; for t Time of the first i Carbon emission allowances for each electrolytic cell series; k Electricity consumption per ton of aluminum in electrolytic aluminum enterprises; For the first i The carbon emission allowance obtained per unit of electricity generated by each electrolyzer series; Δ t The unit time interval. Q This represents the total carbon emissions of electrolytic aluminum users. This refers to the total carbon emission allowance for electrolytic aluminum enterprises. Q GCT This represents the actual carbon trading volume in the electrolytic aluminum industrial park. Q cut The amount of carbon reduction corresponding to each green certificate; Q coal Carbon emissions generated from electricity generation using traditional energy sources;Q Green Carbon emissions generated from supplying energy from new energy sources. f GCT The carbon emission costs for the park to participate in the carbon market α It serves as the benchmark price for carbon trading.

[0081] When an electrolytic aluminum industrial park obtains more green certificates than required for its consumption responsibility assessment, it can sell the excess green certificates to generate revenue; conversely, enterprises must purchase the corresponding number of green certificates to meet mandatory assessment requirements. Based on this mechanism, constraints are established for electrolytic aluminum industrial parks participating in green certificate trading: ; ; ; ; in, N ob The number of green certificates required for electrolytic aluminum enterprises to meet their consumption responsibility weights; ψ This is the green certificate quota coefficient. N CET,t For the electrolytic aluminum industry t Constantly purchase green certificates in the green certificate market. C CET,t The price is for time-sharing green certificates.

[0082] 7) The electrolytic aluminum industrial park participates in the construction of power purchase constraints by the superior power grid. ; ; ; in, C buy,t For time-of-use pricing, C sell,t Time-of-use pricing for electricity; P bgrid,t for t Purchase electricity from the superior power grid at all times. P sgrid,t for t Electricity is sold to the superior power grid at all times. P bgrid,max This refers to the maximum amount of electricity that can be purchased from the power grid. P sgrid,max This refers to the maximum amount of electricity that can be sold to the power grid. , Let t be the electricity purchase and sale flags at time t, both of which are 0-1 variables.

[0083] Step 400: Considering the operational constraints of various distributed power sources, production safety in the electrolytic aluminum industrial park, and the responsibility for renewable energy consumption, etc., and aiming to minimize the sum of costs of purchasing and selling electricity from the upstream grid, operating and maintenance costs of distributed power sources, and costs of participating in the carbon market and green certificate market, construct an optimized operation model for the electrolytic aluminum industrial park that considers the impact of electricity-carbon-green certificate trading. Specifically, this includes: 1) The objective function is to minimize the sum of the costs of purchasing and selling electricity from the upstream power grid, the operation and maintenance costs of distributed power sources, and the costs of participating in the carbon market and the green certificate market. ; in, f m The cost of operation and maintenance of photovoltaic and energy storage systems within the electrolytic aluminum industrial park.

[0084] Considering that electrolytic aluminum companies have their own wind turbines, photovoltaic systems, and energy storage equipment, their operation and maintenance costs must be taken into account to assess economic viability. ; In the formula, α PV The unit operation and maintenance cost of photovoltaic units; for t The power generation capacity of the photovoltaic unit at any given time; α es The unit maintenance cost of the battery; P cha,t , P dis,t for t The charging and discharging power of the battery at all times.

[0085] 2) Constructing power balance constraints ; 3) Battery operating constraints The charging and discharging power of the battery must be lower than the maximum charging and discharging power that the equipment can withstand. At the same time, since the battery cannot be charged and discharged at the same time, certain constraints are required.

[0086] ; ; + =1; In the formula, P es,max This refers to the maximum charging and discharging power of the battery. P cha,sign , P dis,sign These are charging and discharging indicators, both of which are 0-1 variables.

[0087] At the same time, the state of charge of the battery needs to be constrained to keep it within the specified limits.

[0088] ; ; In the formula, E es,t for t The state of charge of the battery at all times; η cha For charging efficiency; P cha,t for t The charging power of the battery at all times; η dis For discharge efficiency; P dis,t for t The discharge power of the battery at all times; E min This is the minimum value of the state of charge; E max This represents the maximum value of the state of charge.

[0089] 4) Other constraints In addition, there are the constraints described in steps 200 and 300 above.

[0090] By adopting the optimized operation method for electrolytic aluminum industrial parks that considers electricity-carbon-green certificate trading as described in this invention, the optimized results can be applied to the actual production and operation of electrolytic aluminum industrial parks. The basic data upon which the optimization method for electrolytic aluminum industrial parks in this invention is based includes data on the series of electrolytic aluminum production equipment in the park, the time-of-use electricity price of the upstream power grid, carbon trading prices, green certificate trading prices, and parameters of distributed power sources within the park, which conforms to the actual operating conditions of electrolytic aluminum industrial parks. This invention considers the characteristics of electrolytic aluminum loads, equating the electrolytic cells to a flexible load, and coordinates with distributed power sources within the park to jointly participate in energy management and electricity-carbon-green certificate trading decisions within the electrolytic aluminum industrial park, helping to reduce the operating costs of electrolytic aluminum industrial parks in fulfilling their energy conservation and carbon reduction responsibilities.

[0091] This embodiment considers two scenarios: first, the scenario of the electrolytic aluminum industrial park participating in the market, which involves the simultaneous participation of the electrolytic aluminum industrial park in the electricity-carbon-green certificate market; second, the optimized operation of the electrolytic aluminum industrial park, taking into account the flexible and adjustable load of electrolytic aluminum, responding to the time-of-use electricity price, carbon trading price and green certificate trading price of the upper-level power grid, and achieving optimized operation of the electrolytic aluminum industrial park under the premise of fulfilling energy conservation and emission reduction responsibilities and not affecting the normal and safe production of the park.

[0092] To better implement the above method, embodiments of this application provide a device for determining the operation strategy of an electrolytic aluminum industrial park, such as... Figure 4 As shown, Figure 4 This is a structural block diagram of the device for determining the operation strategy of an electrolytic aluminum industrial park provided in an embodiment of this application. The device 400 specifically includes: The optimization module 401 is used to determine the target operating strategy that minimizes the preset objective function from multiple candidate operating strategies of the electrolytic aluminum industrial park. The objective function includes the operation and maintenance costs of photovoltaic units and energy storage systems in the electrolytic aluminum industrial park, the electricity purchase and sale costs of the electrolytic aluminum industrial park to the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading, when the electrolytic aluminum industrial park operates under the candidate operating strategies.

[0093] The determination module 402 is used to determine the target operating strategy as the operating strategy of the electrolytic aluminum industrial park.

[0094] The device 400 for determining the operation strategy of the electrolytic aluminum industrial park provided in this application embodiment can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0095] Figure 5 An internal structural diagram of a computer device in one embodiment is shown. This computer device can specifically be a terminal or a server. Figure 5 As shown, the computer device includes a processor, memory, and network interface connected via a system bus. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and may also store a computer program. When executed by the processor, this computer program causes the processor to perform the steps in the above-described method embodiments. The internal memory may also store a computer program, which, when executed by the processor, causes the processor to perform the steps in the above-described method embodiments. Those skilled in the art will understand that... Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0096] In one embodiment, a computer device is provided, including a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the following steps: From multiple candidate operating strategies for the electrolytic aluminum industrial park, a target operating strategy that minimizes the preset objective function is determined. The objective function includes the operation and maintenance costs of photovoltaic units and energy storage systems in the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading, all under the condition that the electrolytic aluminum industrial park operates under the candidate operating strategies. The target operational strategy was determined to be the operational strategy for the electrolytic aluminum industrial park.

[0097] In one embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, causes the processor to perform the following steps: From multiple candidate operating strategies for the electrolytic aluminum industrial park, a target operating strategy that minimizes the preset objective function is determined. The objective function includes the operation and maintenance costs of photovoltaic units and energy storage systems in the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading, all under the condition that the electrolytic aluminum industrial park operates under the candidate operating strategies. The target operational strategy was determined to be the operational strategy for the electrolytic aluminum industrial park.

[0098] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0099] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for determining the operation strategy of an electrolytic aluminum industrial park, characterized in that, The method includes: From multiple candidate operating strategies for the electrolytic aluminum industrial park, a target operating strategy that minimizes a preset objective function is determined. The objective function includes, under the condition that the electrolytic aluminum industrial park operates according to the candidate operating strategies, the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading. The target operation strategy is determined as the operation strategy of the electrolytic aluminum industrial park.

2. The method according to claim 1, characterized in that, The formula for calculating the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading is as follows: ； ； ； ； in, This indicates the carbon emission cost of the aforementioned electrolytic aluminum industrial park participating in carbon market trading. α Indicates the benchmark price for carbon trading. This represents the actual carbon trading volume of the aforementioned electrolytic aluminum industrial park. This represents the total carbon emissions of electrolytic aluminum users associated with the aforementioned electrolytic aluminum industrial park. This represents the total carbon emission allowances of the electrolytic aluminum enterprises associated with the aforementioned electrolytic aluminum industrial park. This indicates the number of green certificates purchased by the electrolytic aluminum industrial park from the green certificate market. This indicates the amount of carbon reduction corresponding to each green certificate. Indicates the first preset duration. This indicates the total number of electrolytic cells in the aforementioned aluminum electrolytic industrial park. Let represent the carbon emission quota for the i-th electrolytic cell series at time t, and k represent the electricity consumption per ton of aluminum by the electrolytic aluminum enterprise. This represents the carbon emission allowance value obtained per unit of electricity generated in the i-th electrolytic cell series. Δt represents the operating power of the i-th electrolytic cell series at time t, where Δt represents the unit time interval. This indicates the carbon emissions generated by the electrolytic aluminum industrial park using traditional energy sources for power generation. This indicates the carbon emissions generated by the use of new energy sources for power in the electrolytic aluminum industrial park.

3. The method according to claim 1, characterized in that, The formula for calculating the cost of the electrolytic aluminum industrial park participating in green certificate trading is as follows: ； in, This indicates the cost of the electrolytic aluminum industrial park participating in green certificate trading. This represents the number of green certificates purchased by the electrolytic aluminum industrial park in the green certificate market at time t. This represents the price of the green certificate at time t. This indicates the second preset duration.

4. The method according to claim 1, characterized in that, The formula for calculating the electricity purchase and sale cost from the upstream power grid for the electrolytic aluminum industrial park is as follows: )； in, This represents the cost of purchasing and selling electricity from the upstream power grid for the aforementioned electrolytic aluminum industrial park. Indicates the second preset duration. This represents the time-of-use electricity price at time t. This represents the amount of electricity purchased by the electrolytic aluminum industrial park from the upper-level power grid at time t. This represents the time-of-use electricity price at time t. This represents the amount of electricity sold by the electrolytic aluminum industrial park to the upstream power grid at time t.

5. The method according to claim 1, characterized in that, The formula for calculating the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park is as follows: + + ) in, This represents the operation and maintenance cost of the photovoltaic units and energy storage systems within the aforementioned electrolytic aluminum industrial park. Indicates the second preset duration. This represents the unit operation and maintenance cost of the photovoltaic units within the aforementioned electrolytic aluminum industrial park. This represents the power generation capacity of the photovoltaic unit at time t. This represents the unit operation and maintenance cost of batteries within the aforementioned electrolytic aluminum industrial park. This represents the charging power of the battery at time t. This represents the discharge power of the battery at time t.

6. The method according to claim 1, characterized in that, For each candidate operating strategy, if the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum industrial park meets the constraints for participating in green certificate trading; the constraints for participating in green certificate trading are as follows: ； ； ； in, This represents the number of green certificates required for electrolytic aluminum enterprises associated with the aforementioned electrolytic aluminum industrial park to meet their consumption responsibility weights, where ψ represents the green certificate quota coefficient. Indicates the first preset duration. This indicates the total number of electrolytic cells in the aforementioned aluminum electrolytic industrial park. This represents the operating power of the i-th electrolytic cell series at time t. This represents the power generation capacity of the photovoltaic units within the electrolytic aluminum industrial park at time t. This represents the number of green certificates purchased by the electrolytic aluminum industrial park at time t in the green certificate market.

7. The method according to claim 1, characterized in that, For each candidate operating strategy, if the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum industrial park meets the constraints for participating in the power purchase of electricity from the upper-level power grid; the constraints for participating in the power purchase of electricity from the upper-level power grid are as follows: ； ； in, This represents the amount of electricity purchased by the electrolytic aluminum industrial park from the upper-level power grid at time t. This represents the amount of electricity sold by the electrolytic aluminum industrial park to the upstream power grid at time t. This indicates the maximum amount of electricity the electrolytic aluminum industrial park can purchase from the upstream power grid. This represents the electricity purchase flag value at time t, indicating whether the electrolytic aluminum industrial park has purchased electricity at time t. This indicates the maximum amount of electricity that the electrolytic aluminum industrial park can sell to the upstream power grid. The value represents the electricity sales flag at time t, indicating whether the electrolytic aluminum industrial park is selling electricity at time t.

8. The method according to claim 1, characterized in that, For each candidate operating strategy, if the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum industrial park meets the electrolytic aluminum load power constraint; the electrolytic aluminum load power constraint is as follows: ； ； ； in, This represents the production power of the nth electrolytic aluminum production series in the electrolytic aluminum industrial park at time t. This represents the series current of the nth electrolytic aluminum production series at time t. This represents the equivalent resistance of the nth electrolytic aluminum production series. This represents the equivalent back electromotive force of the nth electrolytic aluminum production series. This represents the lower limit of the production power of the nth electrolytic aluminum production series. This represents the upper limit of the production power of the nth electrolytic aluminum production series. This represents the lower limit value of the series current for the nth electrolytic aluminum production series. This represents the upper limit of the series current for the nth electrolytic aluminum production series.

9. The method according to claim 1, characterized in that, For each candidate operating strategy, when the electrolytic aluminum industrial park operates under a candidate operating strategy, the electrolytic aluminum load power of the electrolytic aluminum industrial park satisfies the electro-thermal coordination constraint of the electrolytic aluminum load; the electro-thermal coordination constraint of the electrolytic aluminum load is as follows: ； ； ； ； in, This represents the production power of the nth electrolytic aluminum production series in the electrolytic aluminum industrial park at time t. This represents the lower limit of the power output of the nth electrolytic aluminum production series, under the influence of the electrolytic cell temperature at time t. This represents the upper limit of the power output of the nth electrolytic aluminum production series, under the influence of the electrolytic cell temperature at time t. This represents the production power of the nth electrolytic aluminum production series in the electrolytic aluminum industrial park at time t-1. This indicates the specific heat capacity coefficient of cryolite. Indicates the quality of cryolite. This represents the upper limit of the electrolytic cell temperature for the nth electrolytic aluminum production series. This represents the lower limit of the electrolytic cell temperature in the nth electrolytic aluminum production series. Δt represents the temperature of the electrolytic cell in the nth electrolytic aluminum production series at time t, and Δt represents the unit time interval.

10. A device for determining the operation strategy of an electrolytic aluminum industrial park, characterized in that, The device includes: An optimization module is used to determine, from multiple candidate operating strategies of an electrolytic aluminum industrial park, a target operating strategy that minimizes a preset objective function. The objective function includes, under the condition that the electrolytic aluminum industrial park operates according to the candidate operating strategies, the operation and maintenance costs of photovoltaic units and energy storage systems within the electrolytic aluminum industrial park, the electricity purchase and sale costs from the upstream grid, the carbon emission costs of the electrolytic aluminum industrial park participating in carbon market trading, and the costs of the electrolytic aluminum industrial park participating in green certificate trading. The determination module is used to determine the target operating strategy as the operating strategy of the electrolytic aluminum industrial park.

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