Distributed photovoltaic power generation consumption method and system based on electrolytic aluminum industry, equipment and medium

Abstract

The invention relates to the technical field of electrolytic aluminum power utilization control, in particular to a distributed photovoltaic power generation consumption method and system based on the electrolytic aluminum industry, equipment and a medium. By adopting the method provided by the invention, a silicon controlled rectifier unit is reasonably configured by calculating the power variable capacity, the power system power utilization load and the photovoltaic installation capacity; the output power of the silicon controlled rectifier unit is adjusted according to the photovoltaic generating capacity in real time, and photovoltaic electricity which cannot be consumed by a power system is converted into electrolytic aluminum direct current to be consumed safely and efficiently. The distributed photovoltaic absorption problem of an electrolytic aluminum enterprise can be safely and efficiently solved, meanwhile, the influence of the instability of photovoltaic power generation on a power supply system is reduced, the reliability of power supply is ensured, and meanwhile, compared with other absorption modes, the investment cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power control for electrolytic aluminum, and specifically, to a distributed photovoltaic power generation consumption method, system, equipment, and medium based on the electrolytic aluminum industry. Background Art

[0002] As high-energy-consuming enterprises, electrolytic aluminum enterprises have always been major electricity consumers in various regions. The continuous increase in electricity costs has brought disadvantages to the production and operation of electrolytic aluminum enterprises, and some electrolytic aluminum plants are at risk of being phased out due to high energy consumption. In response to the country's "green and low-carbon, energy conservation and consumption reduction" policy, electrolytic aluminum enterprises have effectively reduced grid power consumption and carbon emissions through the construction of distributed photovoltaics in the plant area.

[0003] In the prior art, the distributed photovoltaic power generation of electrolytic aluminum enterprises is generally connected to the AC power supply system nearby and consumed through the power transformation system. However, the electricity that cannot be consumed by the power transformation system cannot be sent back to the grid due to reverse power protection, resulting in waste of electric energy or power outage accidents in electrolytic aluminum enterprises. Summary of the Invention

[0004] The purpose of the present invention is to provide a distributed photovoltaic power generation consumption method, system, equipment, and medium based on the electrolytic aluminum industry to solve the above problems in the prior art.

[0005] The present invention is achieved through the following technical solutions:

[0006] In a first aspect, the present invention provides a distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry, including:

[0007] Obtain the power transformation capacity and photovoltaic power generation capacity, and configure the thyristor rectifier unit capacity according to the power transformation capacity and photovoltaic power generation capacity;

[0008] Obtain the current power consumption of the power transformation and photovoltaic power generation power, and determine whether the current photovoltaic power generation power is greater than the power consumption of the power transformation. If it is not greater than the power consumption of the power transformation, output the photovoltaic power generation power to the power transformation normally;

[0009] If it is greater than the power consumption of the power transformation, output the current photovoltaic power generation power to the thyristor rectifier unit and the power transformation respectively. The photovoltaic power generation power output to the power transformation is equal to the current power consumption of the power transformation. The thyristor rectifier unit converts the photovoltaic power into direct current and outputs it to the electrolytic aluminum DC system;

[0010] Obtain the photovoltaic power generation power, the first output power of the thyristor rectifier unit, the consumption power of the electrolytic aluminum DC system, and the second output power of the power grid. The second output power of the power grid is used by the electrolytic aluminum DC system, establish a power distribution model, and adjust the first output power and the second output power through the power distribution model;

[0011] Determine whether there is a fault in the current direct current system for electrolytic aluminum, the thyristor rectifier unit, and the photovoltaic power generation system. If a fault occurs, disconnect the power supply circuit between the thyristor rectifier unit and the direct current system for electrolytic aluminum. If no fault occurs, no treatment is required.

[0012] Preferably, the configuration of the thyristor rectifier unit capacity according to the power transformer capacity and the photovoltaic power generation capacity includes:

[0013] Obtain historical data groups, and each historical data group includes configured power transformer capacity, photovoltaic power generation capacity, and thyristor rectifier unit capacity data;

[0014] Match the current power transformer capacity and photovoltaic power generation capacity with the data of several historical data groups, output the historical data group with the lowest degree of difference, and transmit the thyristor rectifier unit capacity in the historical data group to the remote end.

[0015] Preferably, the matching of the current power transformer capacity and photovoltaic power generation capacity with the data of several historical data groups includes:

[0016] Establish a matching degree calculation model;

[0017]

[0018] In the formula, is the degree of difference of the i-th historical data group, K l is the current power transformer capacity, K i is the power transformer capacity of the i-th historical data group, λ1 is the first calculation coefficient, λ2 is the second calculation coefficient, λ1 + λ2 = 1, Q l is the current photovoltaic power generation capacity, Q i is the photovoltaic power generation capacity of the i-th historical data group.

[0019] Preferably, the first calculation coefficient includes:

[0020]

[0021] The second calculation coefficient includes:

[0022]

[0023] In the formula, K l,q is the total cost of the power transformer, Q l,q is the total cost of photovoltaic power generation.

[0024] Preferably, the establishment of the power distribution model includes:

[0025] Determine whether the first output power is greater than the power consumption of the aluminum electrolysis DC system. If so, output the first output power to the aluminum electrolysis DC system and turn off the second output power of the power grid.

[0026] If not, set the acquisition period of the photovoltaic power generation, calculate the stability rate of the photovoltaic power generation within the acquisition period, and set the stability rate threshold.

[0027] If it is greater than the stability rate threshold, use the first power distribution model for distribution.

[0028] If it is not greater than the stability rate threshold, use the second power classification model for distribution.

[0029] Preferably, the calculation of the stability rate of the photovoltaic power generation within the acquisition period includes:

[0030]

[0031] In the formula, η is the stability rate, n is several photovoltaic power generation data collected within one acquisition period, P i,1 , P i,2 , …P i,n are the first to the nth photovoltaic power generation data, and P κ is the average value of all photovoltaic power generation data collected within the current period.

[0032] Preferably, the first power distribution model includes:

[0033]

[0034] P b =P e -P a

[0035] The second power distribution model includes:

[0036] P a =P c -P d

[0037] P b =P e -P a

[0038] In the formula, P a is the first output power, P b is the second output power, P c is the current photovoltaic power generation, P d is the power used by the power transformer, and P e is the power consumption of the aluminum electrolysis DC system.

[0039] Second aspect, the present invention provides a distributed photovoltaic power generation consumption system based on the electrolytic aluminum industry, including:

[0040] A data acquisition module, configured to acquire the power transformation capacity and the photovoltaic power generation capacity, and configure the thyristor rectifier unit capacity according to the power transformation capacity and the photovoltaic power generation capacity;

[0041] A data processing module, configured to acquire the current power consumption of the power transformation and the photovoltaic power generation power, determine whether the current photovoltaic power generation power is greater than the power consumption of the power transformation. If it is not greater than the power consumption of the power transformation, the photovoltaic power generation power is normally output to the power transformation; if it is greater than the power consumption of the power transformation, the current photovoltaic power generation power is respectively output to the thyristor rectifier unit and the power transformation, and the photovoltaic power generation power output to the power transformation is equal to the current power consumption of the power transformation. The thyristor rectifier unit converts the photovoltaic power into direct current and outputs it to the electrolytic aluminum DC system; acquire the photovoltaic power generation power, the first output power of the thyristor rectifier unit, the consumption power of the electrolytic aluminum DC system, and the second output power of the power grid. The second output power of the power grid is used by the electrolytic aluminum DC system, establish a power distribution model, and adjust the first output power and the second output power through the power distribution model;

[0042] A fault diagnosis module, configured to determine whether the current electrolytic aluminum DC system, the thyristor rectifier unit, and the photovoltaic power generation system have faults. If a fault occurs, disconnect the power supply loop between the thyristor rectifier unit and the electrolytic aluminum DC system. If no fault occurs, no processing is performed.

[0043] A main control module, connected to the data acquisition module, the data processing module, and the fault diagnosis module, and used to execute the above-mentioned distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry.

[0044] Third aspect, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements the above-mentioned distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry.

[0045] Fourth aspect, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the above-mentioned distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry.

[0046] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0047] By using the method provided by the present invention, through calculating the dynamic variable capacity, the power consumption load of the power system, and the installed capacity of photovoltaic, a thyristor rectifier unit is reasonably configured, and the output power of the thyristor rectifier unit is adjusted in real time following the photovoltaic power generation amount, so as to convert the photovoltaic power that cannot be absorbed by the power system into the direct current for electrolytic aluminum in a safe and efficient manner for absorption. It can safely and efficiently solve the problem of absorption of distributed photovoltaic in electrolytic aluminum enterprises, and at the same time reduce the impact of the instability of photovoltaic power generation on the power supply system, ensure the reliability of power supply, and greatly reduce the investment cost compared with other absorption methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can be obtained based on these drawings.

[0049] Figure 1 It is a schematic diagram of the control flow of the present invention;

[0050] Figure 2 It is a schematic diagram of the 220 kV power supply system structure of the present invention;

[0051] Figure 3 It is a schematic diagram of the distributed photovoltaic absorption system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] The terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. The naming or numbering of the steps that appear in this application does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The named or numbered process steps can change the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0054] The independently described modules or sub - modules can be physically separated or not physically separated; they can be implemented in software or in hardware, and some modules or sub - modules can be implemented in software, with the processor calling the software to implement the functions of these modules or sub - modules, and other modules or sub - modules can be implemented in hardware, for example, through hardware circuits. In addition, some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this application.

[0055] Please refer to Figure 1 - Figure 2 , a distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry, including:

[0056] S101: Obtain the power transformer capacity and photovoltaic power generation capacity, and configure the thyristor rectifier unit capacity according to the power transformer capacity and photovoltaic power generation capacity;

[0057] In the 10kV power supply system, a thyristor rectifier unit is reasonably configured. By using the fast response of the thyristor rectifier unit to current regulation and the large capacity of the power transformer system, the problems of distributed volatility and distributed photovoltaic power generation consumption in electrolytic aluminum enterprises are better solved. The thyristor rectifier unit rectifies the electricity that cannot be consumed by the power system and accesses it to the electrolytic DC system for consumption.

[0058] The configured thyristor rectifier unit has a very large voltage regulation range and a very high response speed, and has very fast and excellent control performance for the anode effect of the electrolytic cell. It maximally meets the requirements of the stable operation of the electrolysis series current, reduces the action times of the on - load tap - changer of the transformer, greatly improves the operation life of the switch, and reduces its maintenance work. The thyristor rectifier can achieve very high control accuracy and response speed, improving the quality of the electrolytic aluminum products of users.

[0059] S202: Obtain the current power consumption of the power transformer and the photovoltaic power generation power, and determine whether the current photovoltaic power generation power is greater than the power consumption of the power transformer. If it is not greater than the power consumption of the power transformer, the photovoltaic power generation power is normally output to the power transformer;

[0060] In this embodiment, when the photovoltaic power generation power is not enough for the power transformer to consume, all the photovoltaic power generation power is directly input into the power transformer for use. If there is surplus photovoltaic power generation power that can be distributed, it is distributed to the thyristor rectifier unit for use.

[0061] S203: If it is greater than the power consumption of the power transformer, the current photovoltaic power generation power is respectively output to the thyristor rectifier unit and the power transformer. The photovoltaic power generation power output to the power transformer is equal to the current power consumption of the power transformer, and the thyristor rectifier unit converts the photovoltaic power into direct current and outputs it to the electrolytic aluminum DC system;

[0062] S204: Obtain the photovoltaic power generation, the first output power of the thyristor rectifier unit, the power consumption of the aluminum electrolysis DC system, and the second output power of the power grid. The second output power of the power grid is used by the aluminum electrolysis DC system. Establish a power distribution model and adjust the first output power and the second output power through the power distribution model.

[0063] Considering the instability of photovoltaic power generation, calculate and analyze the photovoltaic power generation, the first output power of the thyristor rectifier unit, the power consumption of the aluminum electrolysis DC system, and the second output power of the power grid, and adjust the output power of the thyristor rectifier unit and the output power of the power grid. Rectify the photovoltaic power that cannot be consumed by the power system into direct current through the thyristor rectifier unit and connect it to the aluminum electrolysis DC system for consumption.

[0064] It can also be connected to the 400V AC system locally and nearby according to local conditions, or centrally stepped up and connected to the 10kV AC system for consumption. At the same time, using the system capacity of the power transformer, the problem of fluctuations caused by factors such as weather changes in photovoltaic is better solved.

[0065] S205: Determine whether the current aluminum electrolysis DC system, thyristor rectifier unit, and photovoltaic power generation system have failures. If there are failures, disconnect the power supply circuit between the thyristor rectifier unit and the aluminum electrolysis DC system. If there are no failures, do not process.

[0066] Specifically, when it is detected that there are failures in the photovoltaic power generation and the aluminum electrolysis DC system, start the trip protection of the circuit breaker of the 10kV feeder circuit of the thyristor rectifier unit and the photovoltaic power generation system, and disconnect the power supply circuit of the thyristor rectifier unit and the photovoltaic power generation system; when it is detected that there are failures in the thyristor rectifier unit dedicated to photovoltaic power supply, start the trip protection of the circuit breaker of the 10kV feeder circuit of the thyristor rectifier unit and the photovoltaic power generation system, and disconnect the power supply circuit of the thyristor rectifier unit and the photovoltaic power generation system.

[0067] Aluminum electrolysis enterprises cover a relatively large area, and the rooftops and vacant ground of the constructed factory buildings can build a relatively large distributed green energy photovoltaic power generation capacity. Due to the instability and large fluctuations of photovoltaic power generation affected by weather, it is the best way to directly connect photovoltaic power generation to 380V and 10kV and consume it through the power system. However, in aluminum electrolysis enterprises, the power load only accounts for about 4-5% of the total load. The installed photovoltaic capacity may be much larger than the consumption capacity of the power transformer. There is some surplus power that cannot be consumed in the power transformer system. Some power grids have strict restrictions on distributed photovoltaics and do not allow photovoltaic power to be sent back to the power grid through the power transformer. It can only be consumed within the enterprise. This method reasonably configures a set of thyristor rectifier units in the 10kV system of the power transformer, and rectifies the photovoltaic power that cannot be consumed by the power transformer system into direct current through the thyristor rectifier unit and sends it into the aluminum electrolysis DC power system for consumption.

[0068] An exemplary embodiment of the present invention, the configuration of the thyristor rectifier unit capacity according to the dynamic variable capacity and the photovoltaic power generation capacity includes:

[0069] Obtain historical data groups, each of which includes configured dynamic variable capacity, photovoltaic power generation capacity, and thyristor rectifier unit capacity data; match the current dynamic variable capacity and photovoltaic power generation capacity with the data of several historical data groups, output the historical data group with the lowest difference degree, and transmit the thyristor rectifier unit capacity in the historical data group to the remote end.

[0070] Regarding the configuration of the thyristor rectifier unit capacity, it can be referenced according to the historical assembled and complete data. It is necessary to find the data closest to the current dynamic variable capacity and photovoltaic power generation capacity to obtain the corresponding thyristor rectifier unit capacity, and then configure it. If during the execution process, there are significant differences between the dynamic variable capacity and the historical dynamic variable capacity, or between the photovoltaic power generation capacity and the historical photovoltaic power generation capacity, and there is no similar data, then the thyristor rectifier unit capacity can be directly configured according to the difference between the photovoltaic power generation capacity and the dynamic variable capacity.

[0071] Specifically, the matching of the current dynamic variable capacity and photovoltaic power generation capacity with the data of several historical data groups includes:

[0072] Establish a matching degree calculation model;

[0073]

[0074] In the formula, is the difference degree of the i-th historical data group, K l is the current dynamic variable capacity, K i is the dynamic variable capacity of the i-th historical data group, λ1 is the first calculation coefficient, λ2 is the second calculation coefficient, λ1 + λ2 = 1, Q l is the current photovoltaic power generation capacity, Q i is the photovoltaic power generation capacity of the i-th historical data group.

[0075] More specifically, the first calculation coefficient includes:

[0076]

[0077] The second calculation coefficient includes:

[0078]

[0079] In the formula, K l,q is the total cost of the dynamic variable, Q l,q is the total cost of the photovoltaic power generation.

[0080] Set the calculation weight according to the cost of the target object. In the case of limited budget, high-cost objects may have a greater impact on the overall cost. By assigning a higher weight to high-cost objects, it can be ensured that they are given priority in the optimization process (such as reducing their losses or increasing their utilization rate), thereby significantly reducing the total cost. Avoid ignoring "hidden costs": Although the direct cost of some objects is low, the indirect costs (such as downtime losses, maintenance cycles) may be very high. Through weight setting, hidden costs can be made explicit to avoid decision-making biases.

[0081] In an exemplary embodiment of the present invention, the establishing of the power distribution model includes:

[0082] Judge whether the first output power is greater than the power consumption of the aluminum electrolysis DC system. If so, output the first output power to the aluminum electrolysis DC system and turn off the second output power of the power grid;

[0083] If not, set the acquisition period of the photovoltaic power generation, calculate the stability rate of the photovoltaic power generation within the acquisition period, and set a stability rate threshold;

[0084] If it is greater than the stability rate threshold, use the first power distribution model for distribution;

[0085] If it is not greater than the stability rate threshold, use the second power classification model for distribution.

[0086] In this embodiment, if the first output power rectified by the thyristor rectifier unit is already sufficient for the current aluminum electrolysis DC system, then there is no need for the power grid to supplement the remaining output power. However, this situation is generally rare and may only occur when the aluminum electrolysis system is operating less.

[0087] Generally, the power grid needs to supplement the output power, that is, the first output power of the thyristor rectifier unit and the second output power of the power grid are output together.

[0088] The present invention also considers the problem of unstable photovoltaic power generation. In the case of unstable photovoltaic power generation, to ensure the normal operation of the power transformer, it may cause the instability of the first output power of the thyristor rectifier unit. Therefore, two sets of models are used for adjustment when the photovoltaic power generation is unstable and stable respectively.

[0089] Specifically, the calculating of the stability rate of the photovoltaic power generation within the acquisition period includes:

[0090]

[0091] In the formula, η is the stability rate, n is a number of photovoltaic power generation data collected within an acquisition period, P i,1 、P i,2 、…P i,nare the photovoltaic power generation data from the 1st to the nth, P κ is the average value of all the photovoltaic power generation data collected within the current period.

[0092] In an exemplary embodiment of the present invention, the first power distribution model includes:

[0093]

[0094] P b = P e - P a

[0095] The second power distribution model includes:

[0096] P a = P c - P d

[0097] P b = P e - P a

[0098] In the formula, P a is the first output power, P b is the second output power, P c is the current photovoltaic power generation, P d is the power used by the power transformer, P e is the power consumption of the aluminum electrolysis DC system.

[0099] In this embodiment, considering the instability of photovoltaic power generation, it is necessary to reduce the first output power, that is, reduce the output of the thyristor rectifier unit, and increase the second output power of the power grid. After the first output power value is reduced, the floating value will also be reduced to minimize the impact on the aluminum electrolysis DC system.

[0100] According to the power supply safety requirements of the aluminum electrolysis rectifier unit, the configured thyristor rectifier unit must be equipped with current, voltage and reverse current protection matching the original aluminum electrolysis DC rectifier unit to ensure that the rectifier unit is immediately cut off in case of a fault and to ensure system safety.

[0101] According to the foregoing requirements, the configured thyristor rectifier unit can be set to manual / auto mode. According to the photovoltaic power generation and the power consumption of the power system, the on-load tap-changer of the rectifier transformer is used for coarse adjustment, and the thyristor trigger control angle is used for fine adjustment. At the same time, a current stabilization closed-loop regulation control system is adopted to achieve fast constant current and constant power control to adjust the output power, and the photovoltaic power generation that cannot be consumed by the power system is rectified into electrolytic direct current for safe and stable consumption. The automatic mode has higher requirements for the control system and is adjusted more frequently when the weather changes, so manual setting by humans can be considered.

[0102] According to the foregoing settings for the manual mode, the operator can set a relatively generous range according to the weather changes, which can ensure stable accommodation within a relatively large range. Taking the example mentioned above: The power system is configured with two 31.5MW power transformers, with an average load of 20.2MW and a maximum load of 28.9MW. The installed capacity of the photovoltaic power generation is 42.5MW, and a thyristor rectifier unit with a capacity of 25MW is configured in the 10kV system of the main distribution. Under the condition of sunlight during the day, it is set to operate and control within the range of 10 - 20MW, and when there is no photovoltaic power generation at night, it is set to operate and control within the range of 10 - 20MW, making full use of the capacity of the power transformer system and preferably solving the problem of distributed photovoltaic power accommodation in electrolytic aluminum enterprises.

[0103] A distributed photovoltaic power generation accommodation system based on the electrolytic aluminum industry, comprising:

[0104] A data acquisition module, configured to acquire the capacity of the power transformer and the capacity of the photovoltaic power generation, and configure the capacity of the thyristor rectifier unit according to the capacity of the power transformer and the capacity of the photovoltaic power generation;

[0105] A data processing module, configured to acquire the current power consumption of the power transformer and the photovoltaic power generation power, and determine whether the current photovoltaic power generation power is greater than the power consumption of the power transformer. If it is not greater than the power consumption of the power transformer, the photovoltaic power generation power is normally output to the power transformer; if it is greater than the power consumption of the power transformer, the current photovoltaic power generation power is respectively output to the thyristor rectifier unit and the power transformer, and the photovoltaic power generation power output to the power transformer is equal to the current power consumption of the power transformer. The thyristor rectifier unit converts the photovoltaic power into direct current and outputs it to the electrolytic aluminum DC system; acquire the photovoltaic power generation power, the first output power of the thyristor rectifier unit, the consumption power of the electrolytic aluminum DC system, and the second output power of the power grid, where the second output power of the power grid is used for the electrolytic aluminum DC system, establish a power distribution model, and adjust the first output power and the second output power through the power distribution model;

[0106] A fault diagnosis module, configured to determine whether the current electrolytic aluminum DC system, the thyristor rectifier unit, and the photovoltaic power generation system have faults. If a fault occurs, the power supply circuit between the thyristor rectifier unit and the electrolytic aluminum DC system is disconnected; if no fault occurs, no processing is performed.

[0107] A main control module, connected to the data acquisition module, the data processing module, and the fault diagnosis module, for executing a distributed photovoltaic power generation accommodation method based on the electrolytic aluminum industry as described above.

[0108] In addition, in each embodiment of the present invention, the functional units can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0109] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0110] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for the consumption of distributed photovoltaic power generation based on the electrolytic aluminum industry, characterized in that Including: Obtain the dynamic variable capacity and photovoltaic power generation capacity, and configure the thyristor rectifier unit capacity according to the dynamic variable capacity and photovoltaic power generation capacity; Obtain the current power consumption of the dynamic transformer and the photovoltaic power generation power, and determine whether the current photovoltaic power generation power is greater than the power consumption of the dynamic transformer. If it is not greater than the power consumption of the dynamic transformer, then output the photovoltaic power generation power to the dynamic transformer normally; If it is greater than the power consumption of the dynamic transformer, then output the current photovoltaic power generation power to the thyristor rectifier unit and the dynamic transformer respectively. The photovoltaic power generation power output to the dynamic transformer is equal to the current power consumption of the dynamic transformer. The thyristor rectifier unit converts the photovoltaic power into direct current and outputs it to the electrolytic aluminum DC system; Obtain the photovoltaic power generation power, the first output power of the thyristor rectifier unit, the power consumption of the electrolytic aluminum DC system, and the second output power of the power grid. The second output power of the power grid is used for the electrolytic aluminum DC system. Establish a power distribution model and adjust the first output power and the second output power through the power distribution model; Judge whether the current electrolytic aluminum DC system, thyristor rectifier unit, and photovoltaic power generation system have failures. If there are failures, then disconnect the power supply circuit between the thyristor rectifier unit and the electrolytic aluminum DC system. If there are no failures, then do not process; 2. The distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to claim 1, wherein The configuring the thyristor rectifier unit capacity according to the dynamic transformer capacity and photovoltaic power generation capacity includes: Obtain a historical data group, and each historical data group includes configured dynamic transformer capacity, photovoltaic power generation capacity, and thyristor rectifier unit capacity data; Match the current dynamic transformer capacity and photovoltaic power generation capacity with the data of several historical data groups, output the historical data group with the lowest difference degree, and transmit the thyristor rectifier unit capacity in the historical data group to the remote end; 3. A distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to claim 2, characterized in that The matching the current dynamic transformer capacity and photovoltaic power generation capacity with the data of several historical data groups includes: Establish a matching degree calculation model; Wherein, is the difference degree of the i-th group of historical data groups, K l is the current dynamic variable capacity, K i is the dynamic variable capacity of the i-th group of historical data groups, λ1 is the first calculation coefficient, λ2 is the second calculation coefficient, λ1 + λ2 = 1, Q l is the current photovoltaic power generation capacity, Q i is the photovoltaic power generation capacity of the i-th group of historical data groups.

4. A distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to claim 3, characterized in that, The first calculation coefficient includes: The second calculation coefficient includes: Where K l,q is the total cost of the power converter, and Q l,q is the total cost of the photovoltaic power generation.

5. A distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to claim 4, characterized in that The establishing the power distribution model includes: Judge whether the first output power is greater than the power consumption of the electrolytic aluminum DC system. If so, then output the first output power to the electrolytic aluminum DC system and turn off the second output power of the power grid; If not, then set the acquisition period of the photovoltaic power generation power, calculate the stability rate of the photovoltaic power generation power within the acquisition period, and set a stability rate threshold; If it is greater than the stability rate threshold, then use the first power distribution model for distribution; If it is not greater than the stability interest rate threshold, then use the second power classification model for distribution; 6. A distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to claim 4, characterized in that The calculating the stability rate of the photovoltaic power generation power within the acquisition period includes: Where η is the stability rate, n is several photovoltaic power generation data collected within one acquisition period, and P i,1 , P i,2 , … P i,n are the 1st to the nth photovoltaic power generation data, and P κ is the average value of all photovoltaic power generation data collected within the current period.

7. A distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to claim 6, characterized in that, The first power distribution model includes: P b = P e -P a The second power distribution model includes: P a = P c -P d P b = P e -P a Wherein, P a is the first output power, P b is the second output power, P c is the current photovoltaic power generation power, P d is the power consumption of the power transformer, P e is the power consumption of the DC system for electrolytic aluminum.

8. A distributed photovoltaic power generation consumption system based on the electrolytic aluminum industry, characterized in that, Including: A data acquisition module configured to obtain the dynamic transformer capacity and photovoltaic power generation capacity, and configure the thyristor rectifier unit capacity according to the dynamic transformer capacity and photovoltaic power generation capacity; A data processing module, configured to obtain the current power consumption of the power transformer and the photovoltaic power generation. It determines whether the current photovoltaic power generation is greater than the power consumption of the power transformer. If it is not greater than the power consumption of the power transformer, the photovoltaic power generation is normally output to the power transformer; if it is greater than the power consumption of the power transformer, the current photovoltaic power generation is respectively output to the thyristor rectifier unit and the power transformer, and the photovoltaic power generation output to the power transformer is equal to the current power consumption of the power transformer. The thyristor rectifier unit converts the photovoltaic power into direct current and outputs it to the electrolytic aluminum DC system; obtains the photovoltaic power generation, the first output power of the thyristor rectifier unit, the power consumption of the electrolytic aluminum DC system, and the second output power of the power grid. The second output power of the power grid is used for the electrolytic aluminum DC system, establishes a power distribution model, and adjusts the first output power and the second output power through the power distribution model. A fault diagnosis module, configured to determine whether the current electrolytic aluminum DC system, thyristor rectifier unit, and photovoltaic power generation system have faults. If a fault occurs, the power supply circuit between the thyristor rectifier unit and the electrolytic aluminum DC system is disconnected. If no fault occurs, no processing is performed. A main control module, connected to the data acquisition module, data processing module, and fault diagnosis module, is used to execute a distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to any one of claims 1-7.

9. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements a distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium. When the computer program is executed by the processor, it implements a distributed photovoltaic power generation consumption method based on the electrolytic aluminum industry according to any one of claims 1-7.

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