Electrolytic aluminum energy-saving quantity evaluation method, equipment, medium and program product

Abstract

The invention discloses an electrolytic aluminum energy saving amount evaluation method and device, a medium and a program product. The method comprises the steps that energy consumption data, air compressor operation data and environment data are obtained; for each electricity consumption, determining specific power corresponding to the electricity consumption according to the electricity consumption and the gas consumption, and determining standard specific power according to the environment data; correcting the gas consumption according to the plurality of specific powers and the standard specific power to obtain a plurality of corrected gas consumption; determining ton aluminum power consumption corresponding to each power consumption according to the plurality of power consumptions and the electrolytic aluminum yield, and determining a plurality of corrected power consumptions according to the air compressor operation data, the plurality of ton aluminum power consumptions and the number of electrolytic aluminum production days corresponding to each power consumption; and determining the energy-saving amount corresponding to each energy-saving measure according to the multiple corrected gas consumption amounts and the corrected electricity consumption amounts. According to the scheme, the gas consumption is corrected through the specific power and the standard specific power, the electricity consumption is corrected through the electricity consumption per ton of aluminum, and the accuracy of energy saving evaluation is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrolytic aluminum, and particularly relates to an electrolytic aluminum energy-saving quantity evaluation method, device, medium and program product. BACKGROUND

[0002] Electrolytic aluminum belongs to a high energy consumption industry, and its electricity consumption accounts for about 6% of the total electricity consumption of the whole society, so effective energy-saving means are needed. However, due to the low automation level of the electrolytic aluminum plant, online and continuous operation data cannot be obtained, so that the energy-saving effect of the electrolytic aluminum process after applying the energy-saving means cannot be evaluated.

[0003] At present, due to the low automation level of electrolytic aluminum, most of the electrolytic process data of electrolytic aluminum cannot be counted online, and only the electricity consumption data of electrolytic aluminum manually recorded by staff every hour can be used to determine the energy-saving effect of the energy-saving means applied to the electrolytic aluminum process.

[0004] However, the data manually recorded by the staff has a high error rate, which makes the data statistics before applying the energy-saving means prone to errors, so that the statistical data is difficult to accurately reflect the running state change of the machine in the electrolytic aluminum process, and thus the energy-saving quantity evaluation accuracy is low. SUMMARY

[0005] The present application provides an electrolytic aluminum energy-saving quantity evaluation method, device, medium and program product to solve the problem that the data manually recorded by the staff in the prior art has a high error rate, which makes the data statistics before applying the energy-saving means prone to errors, so that the statistical data is difficult to accurately reflect the running state change of the machine in the electrolytic aluminum process, and thus the energy-saving quantity evaluation accuracy is low.

[0006] In a first aspect, the present application provides an electrolytic aluminum energy-saving quantity evaluation method, which comprises:

[0007] obtaining energy consumption data, air compressor running data and environmental data; wherein the energy consumption data comprises a plurality of electricity consumptions, a plurality of gas consumptions and a plurality of electrolytic aluminum outputs, the plurality of electricity consumptions, the plurality of gas consumptions and the plurality of electrolytic aluminum outputs are time series values, and the collection time of the time series is consistent, and the collection time interval of the time series is a preset time interval;

[0008] For each of the electricity consumptions, the corresponding specific power of the electricity consumption is determined according to the electricity consumption and the gas consumption of the same collection time, and the corresponding standard specific power of each of the specific powers is determined according to the environmental data;

[0009] According to the plurality of specific powers and the corresponding standard specific power of each of the specific powers, each of the gas consumptions is corrected to obtain a plurality of corrected gas consumptions;

[0010] According to the multiple power consumptions and the electrolytic aluminum production of the same collection time as each of the power consumptions, the ton aluminum power consumption corresponding to each of the power consumptions is determined, and according to the air compressor operation data, the multiple ton aluminum power consumptions and the electrolytic aluminum production days corresponding to each of the power consumptions, the multiple corrected power consumptions are determined.

[0011] According to the multiple corrected gas consumptions and the multiple corrected power consumptions, the energy saving amount corresponding to each of the energy saving measures is determined.

[0012] In a second aspect, the present application provides an electrolytic aluminum energy saving amount evaluation device, the device comprising:

[0013] The acquisition module is configured to acquire energy consumption data, air compressor operation data and environmental data; wherein the energy consumption data comprises multiple power consumptions, multiple gas consumptions and multiple electrolytic aluminum productions, the multiple power consumptions, the multiple gas consumptions and the multiple electrolytic aluminum productions are time series values, the collection times of the time series are consistent, and the collection time intervals of the time series are preset time intervals.

[0014] The first determination module is configured to, for each of the power consumptions, determine the specific power corresponding to the power consumption according to the power consumption and the gas consumption of the same collection time, and determine the standard specific power corresponding to each of the specific powers according to the environmental data.

[0015] The first correction module is configured to correct each of the gas consumptions according to the multiple specific powers and the standard specific power corresponding to each of the specific powers, to obtain multiple corrected gas consumptions.

[0016] The second correction module is configured to determine the ton aluminum power consumption corresponding to each of the power consumptions according to the multiple power consumptions and the electrolytic aluminum production of the same collection time as each of the power consumptions, and determine the multiple corrected power consumptions according to the air compressor operation data, the multiple ton aluminum power consumptions and the electrolytic aluminum production days corresponding to each of the power consumptions.

[0017] The second determination module is configured to determine the energy saving amount corresponding to each of the energy saving measures according to the multiple corrected gas consumptions and the multiple corrected power consumptions.

[0018] In a third aspect, the present application provides an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to realize the electrolytic aluminum energy saving amount evaluation method according to any one of the embodiments of the present application.

[0019] In a fourth aspect, the present application provides a computer readable storage medium having a computer program stored thereon, wherein the program is executed by a processor to realize the electrolytic aluminum energy saving amount evaluation method according to any one of the embodiments of the present application.

[0020] In a fifth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the method for evaluating energy-saving quantity of electrolytic aluminum as described in any of the embodiments of the present application.

[0021] The scheme of the present application obtains energy consumption data, air compressor operation data and environmental data; wherein the energy consumption data comprises a plurality of power consumptions, a plurality of gas consumptions and a plurality of electrolytic aluminum productions, the plurality of power consumptions, the plurality of gas consumptions and the plurality of electrolytic aluminum productions are time series values, the collection time of the time series is consistent, and the collection time interval of the time series is a preset time interval; for each power consumption, the corresponding specific power of the power consumption is determined according to the power consumption and the gas consumption of the same collection time, and the corresponding standard specific power of each specific power is determined according to the environmental data; each gas consumption is corrected according to the plurality of specific powers and the corresponding standard specific power of each specific power, to obtain a plurality of corrected gas consumptions; the corresponding ton aluminum power consumption of each power consumption is determined according to the plurality of power consumptions and the electrolytic aluminum production of the same collection time as each power consumption, and the plurality of corrected power consumptions is determined according to the air compressor operation data, the plurality of ton aluminum power consumptions and the electrolytic aluminum production days corresponding to each power consumption; the corresponding energy-saving quantity of each energy-saving measure is determined according to the plurality of corrected gas consumptions and the plurality of corrected power consumptions. That is, the scheme of the present application corrects the gas consumption by specific power and standard specific power, and corrects the power consumption by ton aluminum power consumption, so as to improve the accuracy of the data recorded manually by the staff, avoid the problem that the statistical data is difficult to accurately reflect the change of the running state of the machine in the electrolytic aluminum process, and reduce the statistical error rate of the power consumption and the gas consumption. Moreover, the corresponding energy-saving quantity of the energy-saving measure is determined according to the corrected gas consumption and power consumption, which improves the accuracy of the energy-saving quantity evaluation. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a flow diagram of the method for evaluating energy-saving quantity of electrolytic aluminum provided by the present application;

[0024] Figure 2 is another flow diagram of the method for evaluating energy-saving quantity of electrolytic aluminum provided by the present application;

[0025] Figure 3 is a structural diagram of the device for evaluating energy-saving quantity of electrolytic aluminum provided by the present application;

[0026] Figure 4 is a structural schematic diagram of an electronic device provided by the present application. DETAILED DESCRIPTION

[0027] In order for those skilled in the art to better understand the scheme of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0028] Figure 1 is a flowchart of an electrolytic aluminum energy-saving evaluation method provided by the present application, which can be executed by an electrolytic aluminum energy-saving evaluation device, which can be realized in the form of software and / or hardware. In a specific embodiment, the device can be applied in an electronic device, which can be a computer. The following embodiments will be described by taking the device applied in an electronic device as an example, and reference is made to Figure 1 , the method can specifically include the following steps:

[0029] Step 101, acquiring energy consumption data, air compressor running data and environmental data.

[0030] Among them, the energy consumption data includes a plurality of power consumption, a plurality of gas consumption and a plurality of electrolytic aluminum production, the plurality of power consumption, the plurality of gas consumption and the plurality of electrolytic aluminum production are time series values, and the time series collection time is consistent, and the time series collection time interval is a preset time interval.

[0031] Specifically, the energy consumption data includes a plurality of power consumption, a plurality of gas consumption and a plurality of electrolytic aluminum production, the plurality of power consumption is the power consumption of the electrolytic aluminum plant, which is expressed as a time series, and the preset time interval is the collection time interval of the power consumption. For example, the preset time interval is one month, so the plurality of power consumption is the power consumption of each month in a period of time, with the unit of kilowatt-hour (kWh). The plurality of gas consumption is the gas consumption of the electrolytic aluminum plant, which is also expressed as a time series, i.e. the gas consumption of each month, with the unit of cubic meter (m 3 ). The plurality of electrolytic aluminum production is the aluminum production of the electrolytic aluminum plant, which is expressed as a time series, i.e. the aluminum production of each month, with the unit of ton (t). The collection time of these data is once a month, among which the power consumption collected every month can be obtained from the electricity payment of the electrolytic aluminum plant, so it is more accurate than the power consumption recorded manually by workers. The acquisition of energy consumption data can be the energy consumption data returned by the user equipment after sending data acquisition information to the user equipment, or the energy consumption data sent to the electronic equipment executing the present embodiment by the user equipment through the user equipment.

[0032] In the electrolytic aluminum process, the device for conveying raw materials is an air compressor, referred to as an air compressor, which is used to convey the raw material of electrolytic aluminum, i.e. alumina, to the electrolytic aluminum device. The air compressor operation data, i.e. the data generated when the air compressor is running, can include, for example, the average length of the alumina conveying period, the average length of the non-alumina conveying period, the number of air compressors running at full power during the alumina conveying period, the current of the air compressors running at full power during the alumina conveying period, the voltage of the air compressors running at full power during the alumina conveying period, the number of air compressors running at unload during the alumina conveying period, the current of the air compressors running at unload during the alumina conveying period, the voltage of the air compressors running at unload during the alumina conveying period, the number of air compressors running at full power during the non-alumina conveying period, the current of the air compressors running at full power during the non-alumina conveying period, the voltage of the air compressors running at full power during the non-alumina conveying period, the number of air compressors running at unload during the non-alumina conveying period, the current of the air compressors running at unload during the non-alumina conveying period, and the voltage of the air compressors running at unload during the non-alumina conveying period. The acquisition of the air compressor operation data can be that the electronic device executing the present embodiment acquires the air compressor operation data returned by the user device after sending data acquisition information to the user device, or that the electronic device executing the present embodiment acquires the air compressor operation data collected by the sensor when the air compressor is running.

[0033] The environmental data is the external environmental data in the electrolytic aluminum process. For example, the environmental data can include the atmospheric pressure of the air compressor site of the electrolytic aluminum plant, the rated air supply pressure, the actual air supply pressure, and the standard atmospheric pressure. The acquisition of the environmental data can be that the environmental data returned by the user device is acquired after sending data acquisition information to the user device, or that the environmental data is sent to the electronic device executing the present embodiment by the user device.

[0034] Optionally, the air compressor operation data includes the number of air compressors running at full power during the alumina conveying period, the current of the air compressors running at full power during the alumina conveying period, the voltage of the air compressors running at full power during the alumina conveying period, the power factor of the air compressor, the average length of the alumina conveying period, the number of air compressors running at unload during the alumina conveying period, the current of the air compressors running at unload during the alumina conveying period, the voltage of the air compressors running at unload during the alumina conveying period, the number of air compressors running at full power during the non-alumina conveying period, the current of the air compressors running at full power during the non-alumina conveying period, the voltage of the air compressors running at full power during the non-alumina conveying period, the average length of the non-alumina conveying period, the number of air compressors running at unload during the non-alumina conveying period, the current of the air compressors running at unload during the non-alumina conveying period, and the voltage of the air compressors running at unload during the non-alumina conveying period.

[0035] Specifically, the number of air compressors running at full power is divided into the number of air compressors running at full power during the alumina conveying period and the number of air compressors running at full power during the non-alumina conveying period. The current of the air compressors running at full power is divided into the current of the air compressors running at full power during the alumina conveying period and the current of the air compressors running at full power during the non-alumina conveying period. The voltage of the air compressors running at full power is divided into the voltage of the air compressors running at full power during the alumina conveying period and the voltage of the air compressors running at full power during the non-alumina conveying period. The power factor of the air compressor can be obtained from the air compressor nameplate for calculating the actual power. The average length of the alumina conveying day is the average length of the alumina conveying period. The number of air compressors running at idle is divided into the number of air compressors running at idle during the alumina conveying period and the number of air compressors running at idle during the non-alumina conveying period. The current of the air compressors running at idle is divided into the current of the air compressors running at idle during the alumina conveying period and the current of the air compressors running at idle during the non-alumina conveying period. The voltage of the air compressors running at idle is divided into the voltage of the air compressors running at idle during the alumina conveying period and the voltage of the air compressors running at idle during the non-alumina conveying period. The average length of the non-alumina conveying day is the average length of the non-alumina conveying period. Through these detailed operation data, the operation status of the compressed air system for electrolytic aluminum can be comprehensively understood, and a solid data foundation is provided for energy-saving evaluation and optimization.

[0036] In step 102, for each power consumption, the specific power corresponding to the power consumption is determined according to the power consumption and the gas consumption at the same collection time, and the standard specific power corresponding to each specific power is determined according to the environmental data.

[0037] Specifically, the specific power refers to the electric energy consumed per unit of gas consumption, which can be obtained according to the ratio of gas consumption to power consumption. The specific power corresponding to the power consumption is determined according to the power consumption and the gas consumption at the same collection time, so as to calculate a plurality of specific powers. For example, the power consumption of the xth month is a, and the gas consumption of the month is b, so the ratio of the gas consumption to the power consumption of the month can be calculated, that is, the specific power corresponding to the power consumption of the month.

[0038] The standard specific power refers to the specific power under standard working conditions, that is, under standard atmospheric pressure and rated gas supply pressure. The standard specific power can be obtained according to the standard atmospheric pressure, the actual gas supply pressure, the rated specific power of the air compressor, and the atmospheric pressure.

[0039] Optionally, the environmental data includes the rated specific power of the air compressor, the atmospheric pressure, the actual gas supply pressure, and the rated gas supply pressure, and the standard specific power corresponding to each specific power can be determined according to the environmental data by steps 21 to 23.

[0040] In step 21, a first ratio is determined according to the atmospheric pressure and the actual gas supply pressure.

[0041] Specifically, in the process of electrolytic aluminum production, the operation efficiency and energy consumption of the air compressor are closely related to the supply air pressure. Therefore, in order to more accurately evaluate the energy consumption of the air compressor, it is necessary to determine the first ratio according to the atmospheric pressure at the location of the air compressor and the actual supply air pressure. The first ratio is used to indicate the operation efficiency of the air compressor under different air pressures. The atmospheric pressure at the location of the air compressor can be obtained from public meteorological data, and the unit is megapascal (MPa). The actual supply air pressure can be read from the field statistics table or pressure gauge, and the unit is megapascal (MPa). Then the first ratio is calculated as the ratio of the sum of the actual supply air pressure and the atmospheric pressure at the location of the air compressor to the atmospheric pressure.

[0042] Step 22, determine the second ratio according to the standard atmospheric pressure and the rated supply air pressure.

[0043] Specifically, when evaluating the energy consumption and efficiency of the air compressor, the relationship between the standard atmospheric pressure and the rated supply air pressure of the air compressor needs to be considered. The second ratio is used to indicate the operation efficiency of the air compressor under different supply air pressures, and is used to correct the specific power of the air compressor to make it more consistent with the actual operating conditions. The second ratio is calculated as the ratio of the sum of the rated supply air pressure and the standard atmospheric pressure to the standard atmospheric pressure. The standard atmospheric pressure is usually taken as 0.1 MPa. The rated supply air pressure is obtained from the air compressor parameters on the air compressor nameplate of the air compressor.

[0044] Step 23, determine the standard specific power according to the rated specific power of the air compressor, the first ratio and the second ratio.

[0045] Specifically, the standard specific power is the specific power of the air compressor under the standard atmospheric pressure and the rated supply air pressure, which can be determined according to the rated specific power of the air compressor, the first ratio and the second ratio.

[0046] For example, the standard specific power can be obtained by formula 1.

[0047]

[0048] wherein q r represents the standard specific power, q c represents the rated specific power of the air compressor, P1 represents the atmospheric pressure, P C represents the actual supply air pressure, P0 represents the standard atmospheric pressure, and P e represents the rated supply air pressure.

[0049] Step 103, correct each gas consumption according to the plurality of specific powers and the standard specific power corresponding to each specific power to obtain a plurality of corrected gas consumptions.

[0050] Specifically, each gas consumption is corrected according to each specific power and corresponding standard specific power, to obtain a plurality of corrected gas consumptions. The purpose of the correction of the gas consumption is to eliminate the inaccuracy of manual recording by the staff, the inaccuracy of air flow measurement, or the influence of environmental changes on the gas consumption, so as to obtain more accurate gas consumption data. The correction of the gas consumption can be achieved by the difference between the specific power and the standard specific power.

[0051] Exemplarily, the accuracy of the gas consumption can be verified by formula 2.

[0052]

[0053] wherein σ i represents the relative deviation, Elec i represents the electricity consumption of the i th month, Airp i represents the gas consumption of the i th month, q r represents the standard specific power. After verifying the accuracy of the gas consumption, the gas consumption is corrected according to the relative deviation.

[0054] Step 104, according to a plurality of electricity consumptions and electrolytic aluminum production quantities collected at the same time as each electricity consumption, determining a ton aluminum power consumption corresponding to each electricity consumption, and according to the air compressor operation data, the plurality of ton aluminum power consumptions and the electrolytic aluminum production days corresponding to each electricity consumption, determining a plurality of corrected electricity consumptions.

[0055] Specifically, the ton aluminum power consumption refers to the electric energy consumed for producing each ton of aluminum in the electrolytic aluminum plant. The calculation formula is shown in formula 3.

[0056]

[0057] wherein i represents the i th time point in the time sequence, for example, the i th month, m i represents the ton aluminum power consumption of the i th month, Elec i represents the electricity consumption of the i th month, Atlc i represents the electrolytic aluminum production of the i th month.

[0058] Through the above steps, the ton aluminum power consumption corresponding to each electricity consumption can be obtained, which will provide a basis for subsequent energy saving evaluation.

[0059] According to the air compressor operation data, multiple tons of aluminum power consumption and the corresponding electrolytic aluminum production days of each power consumption, the purpose of correcting the power consumption is to eliminate the influence of errors or errors in manual recording of power consumption by staff and data time scale and other factors, so as to obtain more accurate power consumption data. The electrolytic aluminum production days are the actual production days of the electrolytic aluminum plant every month, so as to ensure that the calculated power consumption reflects the actual production situation. According to the air compressor operation data, multiple tons of aluminum power consumption and the corresponding electrolytic aluminum production days of each power consumption, the air compressor running power of the alumina conveying period and the non-alumina conveying period is calculated, and then the tons of aluminum power consumption is corrected, and then the corrected power consumption of each month is obtained.

[0060] Optionally, according to the air compressor operation data, multiple tons of aluminum power consumption and the corresponding electrolytic aluminum production days of each power consumption, the multiple corrected power consumptions can be determined by steps 41 to 45.

[0061] Step 41, according to the number of air compressors running at full power during the alumina conveying period, the current of the air compressors running at full power during the alumina conveying period, the voltage of the air compressors running at full power during the alumina conveying period, the power factor of the air compressors and the average length of the alumina conveying day, the first working condition running power of the air compressor is determined.

[0062] Specifically, the first working condition running power of the air compressor is the running power consumption of the air compressor running at full power during the alumina conveying stage. The calculation of the first working condition running power of the air compressor can be realized by formula 4.

[0063]

[0064] Wherein, Qf1 represents the first working condition running power of the air compressor, 1.732 is the mathematical relationship between the line voltage and the phase voltage in three-phase power, Napf1 represents the number of air compressors running at full power during the alumina conveying period, Iapf1 represents the current of the air compressors running at full power during the alumina conveying period, Uapf1 represents the voltage of the air compressors running at full power during the alumina conveying period, The power factor of the air compressor represents the power factor of the air compressor, and Tapf represents the average length of the alumina conveying day.

[0065] Step 42, according to the number of air compressors running at full power during the alumina conveying period, the current of the air compressors running at full power during the alumina conveying period, the voltage of the air compressors running at full power during the alumina conveying period, the power factor of the air compressors and the average length of the alumina conveying day, the second working condition running power of the air compressor is determined.

[0066] Specifically, the second working condition operation power of the air compressor is the operation power consumption of the air compressor in the unloading operation in the alumina conveying stage. During the alumina conveying period, not only the air compressor in full power operation, but also the air compressor in partial load operation. The air compressor in unloading operation consumes a certain amount of power, so it is necessary to determine the second working condition operation power of the air compressor. The calculation of the second working condition operation power of the air compressor can be realized by formula 5.

[0067]

[0068] Wherein, Qf2 represents the second working condition operation power of the air compressor, Napf2 represents the number of air compressors in unloading operation during the alumina conveying period, Iapf2 represents the current of the air compressor in unloading operation during the alumina conveying period, Uapf2 represents the voltage of the air compressor in unloading operation during the alumina conveying period, represents the power factor of the air compressor, and Tapf represents the average length of the alumina conveying period.

[0069] Step 43, according to the number of air compressors in full power operation during the non-alumina conveying period, the current of the air compressor in full power operation during the non-alumina conveying period, the voltage of the air compressor in full power operation during the non-alumina conveying period, the power factor of the air compressor and the average length of the non-alumina conveying period, the third working condition operation power of the air compressor is determined.

[0070] Specifically, the non-alumina conveying period refers to the period after the alumina conveying is completed, and the air compressor still provides compressed air for the normal operation of other production links, such as electrolytic cell. The third working condition operation power of the air compressor is the operation power consumption of the air compressor in full power operation in the non-alumina conveying stage. The calculation of the third working condition operation power of the air compressor can be realized by formula 6.

[0071]

[0072] Wherein, Qn1 represents the third working condition operation power of the air compressor, Napn1 represents the number of air compressors in full power operation during the non-alumina conveying period, Iapn1 represents the current of the air compressor in full power operation during the non-alumina conveying period, Uapn1 represents the voltage of the air compressor in full power operation during the non-alumina conveying period, represents the power factor of the air compressor, and Tapn represents the average length of the non-alumina conveying period.

[0073] Step 44, according to the number of air compressors in unloading operation during the non-alumina conveying period, the current of the air compressor in unloading operation during the non-alumina conveying period, the voltage of the air compressor in unloading operation during the non-alumina conveying period, the power factor of the air compressor and the average length of the non-alumina conveying period, the fourth working condition operation power of the air compressor is determined.

[0074] Specifically, the fourth working condition operation power of the air compressor is the operation power consumption of the unloaded air compressor in the non-bauxite conveying stage. At this time, the air compressor does not provide main compressed air, but still consumes a certain amount of power. The calculation of the fourth working condition operation power of the air compressor can be realized by formula 7.

[0075]

[0076] wherein Qn2 represents the fourth working condition operation power of the air compressor, Napn2 represents the number of unloaded air compressors during the non-bauxite conveying period, Iapn2 represents the current of the unloaded air compressor during the non-bauxite conveying period, Uapn2 represents the voltage of the unloaded air compressor during the non-bauxite conveying period, represents the power factor of the air compressor, and Tapn represents the average daily duration of non-bauxite conveying. The average daily duration of non-bauxite conveying and the average daily duration of bauxite conveying add up to 24.

[0077] Step 45, according to the first working condition operation power of the air compressor, the second working condition operation power of the air compressor, the third working condition operation power of the air compressor, the fourth working condition operation power of the air compressor, the power consumption per ton of aluminum, and the number of days of electrolytic aluminum production corresponding to each power consumption, determine a plurality of corrected power consumptions.

[0078] Specifically, for the power consumption of each month, the corrected power consumption of the month can be determined according to the first working condition operation power of the air compressor, the second working condition operation power of the air compressor, the third working condition operation power of the air compressor, the fourth working condition operation power of the air compressor, the power consumption per ton of aluminum, and the number of days of electrolytic aluminum production corresponding to the power consumption. After the corrected power consumption of each month is corrected, a plurality of corrected power consumptions can be obtained. The corrected power consumption of the month can be determined according to formula 8 according to the first working condition operation power of the air compressor, the second working condition operation power of the air compressor, the third working condition operation power of the air compressor, the fourth working condition operation power of the air compressor, the power consumption per ton of aluminum, and the number of days of electrolytic aluminum production.

[0079]

[0080] wherein Elec i represents the corrected power consumption of the i-th month, Qf1 represents the first air compressor operation power, Qf2 represents the second air compressor operation power, Qn1 represents the third air compressor operation power, Qn2 represents the fourth air compressor operation power, mth i represents the number of days of electrolytic aluminum production in the i-th month, which is generally the number of days in the month, m i represents the power consumption per ton of aluminum in the i-th month, represents the average value of the power consumption per ton of aluminum in a plurality of months.

[0081] Step 105, according to a plurality of corrected gas consumptions and a plurality of corrected power consumptions, determine the energy saving amount corresponding to each energy saving measure.

[0082] Specifically, according to the modified multiple correction air quantity and multiple correction electric quantity, the more accurate alumina conveying daily average time length and non-alumina conveying daily average time length can be obtained by correction, and then the different energy-saving measures can be determined to reduce the electric quantity of the air compressor, so as to determine the energy-saving quantity corresponding to each energy-saving measure.

[0083] Optionally, the energy-saving measures include changing the alumina conveying mode from compressed air conveying to chute conveying, shell breaking cylinder air saving of the electrolytic cell, electrolytic cell pipeline leakage treatment air saving, zero-energy consumption dryer air saving, and air compressor group control air saving.

[0084] Specifically, when the alumina conveying mode is changed from compressed air conveying to chute conveying, a large amount of electric energy is consumed to generate and maintain compressed air for compressed air conveying, and chute conveying mainly relies on gravity, so almost no additional energy consumption is needed. The shell breaking cylinder air saving of the electrolytic cell is to install a pressure regulating air saving device before the shell breaking cylinder of the electrolytic cell, to optimize the air consumption of the cylinder, reduce unnecessary compressed air consumption by reducing the working pressure of the cylinder or optimizing the air consumption. The electrolytic cell pipeline leakage treatment air saving is to detect and repair the leakage of the electrolytic cell pipeline to reduce the leakage of compressed air. Since leakage will cause a large amount of compressed air to be wasted, the energy consumption of the air compressor can be significantly reduced by treating the leakage. The zero-energy consumption dryer air saving is to use a zero-energy consumption dryer to reduce the consumption of compressed air during the drying process. Since the traditional dryer consumes a large amount of compressed air, the zero-energy consumption dryer reduces this part of energy consumption through optimized design. The air compressor group control air saving is to optimize the operation of the air compressor through the air compressor group control system to reduce unnecessary energy consumption. The air compressor group control system can dynamically adjust the number and mode of operation of the air compressor according to the actual air demand to avoid excessive operation and generate excess energy consumption.

[0085] The scheme of the present application obtains energy consumption data, air compressor running data and environmental data; wherein the energy consumption data includes multiple power consumptions, multiple gas consumptions and multiple electrolytic aluminum productions, the multiple power consumptions, the multiple gas consumptions and the multiple electrolytic aluminum productions are time series values, the collection time of the time series is consistent, and the collection time interval of the time series is a preset time interval; for each power consumption, the specific power corresponding to the power consumption is determined according to the power consumption and the gas consumption of the same collection time, and the standard specific power corresponding to each specific power is determined according to the environmental data; each gas consumption is corrected according to the multiple specific powers and the standard specific power corresponding to each specific power, to obtain multiple corrected gas consumptions; the ton aluminum power consumption corresponding to each power consumption is determined according to the multiple power consumptions and the electrolytic aluminum production of the same collection time as each power consumption, and the multiple corrected power consumptions are determined according to the air compressor running data, the multiple ton aluminum power consumptions and the electrolytic aluminum production days corresponding to each power consumption; the energy saving amount corresponding to each energy saving measure is determined according to the multiple corrected gas consumptions and the multiple corrected power consumptions. That is, the scheme of the present application corrects the gas consumption by specific power and standard specific power, and corrects the power consumption by ton aluminum power consumption, thereby improving the accuracy of the data manually recorded by the staff, avoiding the problem that the statistical data is difficult to accurately reflect the change of the running state of the machine in the electrolytic aluminum process, and reducing the statistical error rate of the power consumption and the gas consumption. Moreover, the energy saving amount corresponding to the energy saving measure is determined according to the corrected gas consumption and power consumption, thereby improving the accuracy of the energy saving amount evaluation.

[0086] Figure 2 is another flowchart of the electrolytic aluminum energy saving amount evaluation method provided by the present application, and the embodiment in Figure 1 the embodiment and various optional implementation schemes, the air compressor running data further includes typical tank daily average gas saving amount, typical electrolytic tank pipeline daily average gas leakage amount and gas pressure fluctuation reduction value, and the process of determining the energy saving amount corresponding to each energy saving measure is described in detail. As Figure 2 shown, the method can include the following steps:

[0087] Step 201, obtaining energy consumption data, air compressor running data and environmental data.

[0088] Step 202, for each power consumption, the specific power corresponding to the power consumption is determined according to the power consumption and the gas consumption of the same collection time, and the standard specific power corresponding to each specific power is determined according to the environmental data.

[0089] Step 203, according to the multiple specific powers and the standard specific power corresponding to each specific power, each gas consumption is corrected to obtain multiple corrected gas consumptions.

[0090] Step 204, according to the plurality of power consumption and the same as the collection time of each power consumption electrolytic aluminum production, determine the corresponding ton aluminum power consumption of each power consumption, and according to the air compressor operation data, the plurality of ton aluminum power consumption and the corresponding electrolytic aluminum production days of each power consumption, determine the plurality of correction power consumption.

[0091] Step 205, according to the plurality of correction gas consumption and the plurality of correction power consumption to determine the air compressor running power of the feeding period, the air compressor running power of the non feeding period and the feeding time.

[0092] Specifically, after obtaining the plurality of correction gas consumption and the plurality of correction power consumption, according to the corrected gas consumption and power consumption, the actual running power of the air compressor in the feeding period, the actual running power of the air compressor in the non feeding period and the actual feeding time are determined.

[0093] Step 206, according to the air compressor running power of the feeding period, the air compressor running power of the non feeding period and the feeding time to determine the corresponding energy saving quantity of the transformation of the compressed air transportation of the alumina to the chute transportation.

[0094] Specifically, according to the air compressor running power of the feeding period, the air compressor running power of the non feeding period and the feeding time to determine the corresponding energy saving quantity of the transformation of the compressed air transportation of the alumina to the chute transportation can be calculated by formula 9.

[0095]

[0096] wherein, represents the corresponding energy saving quantity of the transformation of the compressed air transportation of the alumina to the chute transportation, Qf1 represents the first working condition of the air compressor running power consumption, Napf1 represents the number of full power running air compressors during the alumina conveying period, Iapf1 represents the current of the full power running air compressor during the alumina conveying period, Uapf1 represents the voltage of the full power running air compressor during the alumina conveying period, Qf2 represents the power factor of the air compressor, Napf2 represents the number of unloaded air compressors during the alumina conveying period, Iapf2 represents the current of the unloaded air compressor during the alumina conveying period, Uapf2 represents the voltage of the unloaded air compressor during the alumina conveying period, Qn1 represents the third operating power of the air compressor, Napn1 represents the number of full-power air compressors during the non-alumina conveying period, Iapn1 represents the current of the full-power air compressor during the non-alumina conveying period, Uapn1 represents the voltage of the full-power air compressor during the non-alumina conveying period, Napn2 represents the number of unloaded air compressors during the non-alumina conveying period, Iapn2 represents the current of the unloaded air compressor during the non-alumina conveying period, Uapn2 represents the voltage of the unloaded air compressor during the non-alumina conveying period, Tapf' represents the corrected average daily duration of alumina conveying determined according to the plurality of corrected gas quantities and the plurality of corrected electric quantities, mth i represents the corrected number of electrolytic aluminum production days in the i-th month determined according to the plurality of corrected gas quantities and the plurality of corrected electric quantities, which is generally the number of days in the month, m i represents the ton aluminum power consumption in the i-th month, represents the average ton aluminum power consumption of a plurality of months, Q lc represents the energy consumption of the chute conveying.

[0097] Step 207, according to the typical slot daily gas saving quantity, the typical electrolytic tank pipeline daily gas leakage quantity and the standard specific power under the local atmospheric pressure, the energy saving quantity corresponding to the electrolytic tank crust breaking cylinder gas saving and the electrolytic tank pipeline leakage gas saving is determined.

[0098] Specifically, by installing a pressure regulating and gas testing device in front of the electrolytic tank crust breaking cylinder, the typical slot daily gas saving quantity Δqe2 is obtained, and the typical electrolytic tank pipeline daily gas leakage quantity Δqe3 is obtained at the same time. Then, the energy saving quantity corresponding to the electrolytic tank crust breaking cylinder gas saving and the electrolytic tank pipeline leakage gas saving can be calculated by formula 10.

[0099]

[0100] wherein, represents the energy saving quantity corresponding to the electrolytic tank crust breaking cylinder gas saving and the electrolytic tank pipeline leakage gas saving, Δq e2 represents the typical slot daily gas saving quantity, Δq e3 represents the typical electrolytic tank pipeline daily gas leakage quantity, N represents the number of electrolytic tanks, mth i represents the corrected number of electrolytic aluminum production days in the i-th month determined according to the plurality of corrected gas quantities and the plurality of corrected electric quantities, q r represents the standard specific power.

[0101] Step 208, according to the air compressor running energy consumption during the non-feeding period, the energy saving quantity corresponding to the zero energy consumption dryer gas saving is determined.

[0102] Specifically, since the zero-energy consumption dryer no longer uses the product gas of the air compressor, the amount of electricity saved is mainly the electricity consumption of the air compressor corresponding to the product gas, and since compressed air is no longer used to transport alumina, the basic electricity consumption saved is the air compressor running energy consumption during the entire non-feeding period. The energy saving amount corresponding to the air saving of the zero-energy consumption dryer can be calculated according to formula 11.

[0103]

[0104] wherein, represents the energy saving amount corresponding to the air saving of the zero-energy consumption dryer, represents the power factor of the air compressor, Napn1 represents the number of air compressors running at full power during the non-alumina conveying period, Iapn1 represents the current of the air compressor running at full power during the non-alumina conveying period, Uapn1 represents the voltage of the air compressor running at full power during the non-alumina conveying period, Napn2 represents the number of air compressors running at unloaded during the non-alumina conveying period, Iapn2 represents the current of the air compressor running at unloaded during the non-alumina conveying period, Uapn2 represents the voltage of the air compressor running at unloaded during the non-alumina conveying period, mth i represents the modified number of electrolytic aluminum production days in the i-th month determined by the plurality of correction gas amounts and the plurality of correction electricity amounts, m i represents the modified ton aluminum power consumption in the i-th month determined by the plurality of correction gas amounts and the plurality of correction electricity amounts, represents the average ton aluminum power consumption of the plurality of months.

[0105] Step 209, according to the air pressure fluctuation reduction value, the number of air compressors running at full power during the non-alumina conveying period, the current of the air compressor running at full power during the non-alumina conveying period, the voltage of the air compressor running at full power during the non-alumina conveying period, the number of air compressors running at unloaded during the non-alumina conveying period, the current of the air compressor running at unloaded during the non-alumina conveying period, the voltage of the air compressor running at unloaded during the non-alumina conveying period, determine the energy saving amount corresponding to the air saving of the air compressor group control.

[0106] Specifically, the target of the air compressor group control is mainly to reduce the pipe network air pressure fluctuation on the basis of ensuring supply and demand balance. Assuming that the air pressure fluctuation reduction value is ΔP, the energy saving amount corresponding to the air saving of the air compressor group control can be calculated by formula 12.

[0107]

[0108] wherein, represents the energy saving amount corresponding to the air saving of the air compressor group control, Napn1 represents the number of air compressors running at full power during the non-alumina conveying period, Iapn1 represents the current of the air compressors running at full power during the non-alumina conveying period, Uapn1 represents the voltage of the air compressors running at full power during the non-alumina conveying period, Napn2 represents the number of air compressors running at unloaded during the non-alumina conveying period, Iapn2 represents the current of the air compressors running at unloaded during the non-alumina conveying period, Uapn2 represents the voltage of the air compressors running at unloaded during the non-alumina conveying period, mth i represents the number of air compressors running at full power during the non-alumina conveying period, Iapn1 represents the current of the air compressors running at full power during the non-alumina conveying period, Uapn1 represents the voltage of the air compressors running at full power during the non-alumina conveying period, Napn2 represents the number of air compressors running at unloaded during the non-alumina conveying period, Iapn2 represents the current of the air compressors running at unloaded during the non-alumina conveying period, Uapn2 represents the voltage of the air compressors running at unloaded during the non-alumina conveying period, mth i represents the number of air compressors running at full power during the non-alumina conveying period, Iapn1 represents the current of the air compressors running at full power during the non-alumina conveying period, Uapn1 represents the voltage of the air compressors running at full power during the non-alumina conveying period, Napn2 represents the number of air compressors running at unloaded during the non-alumina conveying period, Iapn2 represents the current of the air compressors running at unloaded during the non-alumina conveying period, Uapn2 represents the voltage of the air compressors running at unloaded during the non-alumina conveying period, mth represents the number of air compressors running at full power during the non-alumina conveying period, Iapn1 represents the current of the air compressors running at full power during the non-alumina conveying period, Uapn1 represents the voltage of the air compressors running at full power during the non-alumina conveying period, Napn2 represents the number of air compressors running at unloaded during the non-alumina conveying period, Iapn2 represents the current of the air compressors running at unloaded during the non-alumina conveying period, Uapn2 represents the voltage of the air compressors running at unloaded during the non-alumina conveying period, mth C represents the number of air compressors running at full power during the non-alumina conveying period, Iapn1 represents the current of the air compressors running at full power during the non-alumina conveying period, Uapn1 represents the voltage of the air compressors running at full power during the non-alumina conveying period, Napn2 represents the number of air compressors running at unloaded during the non-alumina conveying period, Iapn2 represents the current of the air compressors running at unloaded during the non-alumina conveying period, Uapn2 represents the voltage of the air compressors running at unloaded during the non-alumina conveying period, mth

[0109] Optionally, the target total energy-saving amount is determined according to the corresponding energy-saving amount of the transformation of alumina conveying from compressed air to chute, the corresponding energy-saving amount of electrolytic cell crust breaking cylinder air saving and electrolytic cell pipeline leakage treatment air saving, the corresponding energy-saving amount of zero-energy-consumption dryer air saving, and the corresponding energy-saving amount of air compressor group control air saving.

[0110] Specifically, the target total energy-saving amount, i.e., the total energy-saving amount, can be obtained by simple superposition of each energy-saving measure, and can be calculated by formula 13.

[0111]

[0112] wherein Qe represents the target total energy-saving amount, Qe1 i represents the corresponding energy-saving amount of the transformation of alumina conveying from compressed air to chute in the i th month, Qe2 i represents the corresponding energy-saving amount of electrolytic cell crust breaking cylinder air saving in the i th month, Qe3 i represents the corresponding energy-saving amount of electrolytic cell pipeline leakage treatment air saving in the i th month, Qe4 i represents the corresponding energy-saving amount of zero-energy-consumption dryer air saving in the i th month, Qe5 i represents the corresponding energy-saving amount of air compressor group control air saving in the i th month, and Qe6 represents other energy-saving amounts.

[0113] The scheme of the present application determines the air compressor running power in the material conveying period, the air compressor running power in the non-material conveying period and the material conveying duration according to multiple corrected gas consumptions and multiple corrected electric consumptions, thereby providing important data support for energy saving evaluation and optimization of the compressed air system of the electrolytic aluminum. In addition, the corresponding energy saving amount of the transformation of compressed air transportation of the aluminum oxide into chute transportation, the corresponding energy saving amount of the shell breaking cylinder of the electrolytic cell, the corresponding energy saving amount of the leakage treatment of the pipeline of the electrolytic cell, the corresponding energy saving amount of the zero energy consumption dryer and the corresponding energy saving amount of the air compressor group control can be determined, so that the accurate evaluation of the energy saving of the compressed air system of the electrolytic aluminum can be realized, thereby providing data support for effective energy saving.

[0114] Figure 3 is a structural schematic diagram of an electrolytic aluminum energy saving amount evaluation device provided by the present application, which is suitable for executing the electrolytic aluminum energy saving amount evaluation method provided by the present application. As shown in Figure 3 , the device can specifically include:

[0115] The acquisition module 301 is configured to acquire energy consumption data, air compressor running data and environmental data; wherein the energy consumption data includes multiple electric consumptions, multiple gas consumptions and multiple electrolytic aluminum outputs, the multiple electric consumptions, the multiple gas consumptions and the multiple electrolytic aluminum outputs are time series values, the collection time of the time series is consistent, and the collection time interval of the time series is a preset time interval.

[0116] The first determination module 302 is configured to determine, for each electric consumption, a specific power corresponding to the electric consumption according to the electric consumption and the gas consumption at the same collection time, and determine a standard specific power corresponding to each specific power according to the environmental data.

[0117] The first correction module 303 is configured to correct each gas consumption according to multiple specific powers and the standard specific power corresponding to each specific power, thereby obtaining multiple corrected gas consumptions.

[0118] The second correction module 304 is configured to determine a ton aluminum power consumption corresponding to each electric consumption according to the multiple electric consumptions and the electrolytic aluminum output at the same collection time as each electric consumption, and determine multiple corrected electric consumptions according to the air compressor running data, multiple ton aluminum power consumptions and the electrolytic aluminum production days corresponding to each electric consumption.

[0119] The second determination module 305 is configured to determine an energy saving amount corresponding to each energy saving measure according to the multiple corrected gas consumptions and the multiple corrected electric consumptions.

[0120] In an embodiment, the air compressor operation data obtained by the obtaining module 301 includes the number of air compressors running at full power during the alumina conveying period, the current of air compressors running at full power during the alumina conveying period, the voltage of air compressors running at full power during the alumina conveying period, the power factor of air compressors, the average duration of alumina conveying per day, the number of air compressors running at unloaded during the alumina conveying period, the current of air compressors running at unloaded during the alumina conveying period, the voltage of air compressors running at unloaded during the alumina conveying period, the number of air compressors running at full power during the non-alumina conveying period, the current of air compressors running at full power during the non-alumina conveying period, the voltage of air compressors running at full power during the non-alumina conveying period, the average duration of non-alumina conveying per day, the number of air compressors running at unloaded during the non-alumina conveying period, the current of air compressors running at unloaded during the non-alumina conveying period, and the voltage of air compressors running at unloaded during the non-alumina conveying period.

[0121] In an embodiment, the second correction module 304 is configured to determine the plurality of corrected power consumptions according to the air compressor operation data, the plurality of power consumptions per ton of aluminum, and the number of days of electrolytic aluminum production corresponding to each of the power consumptions, specifically by determining the first air compressor operation power consumption according to the number of air compressors running at full power during the alumina conveying period, the current of air compressors running at full power during the alumina conveying period, the voltage of air compressors running at full power during the alumina conveying period, the power factor of air compressors, and the average duration of alumina conveying per day; determining the second air compressor operation power consumption according to the number of air compressors running at unloaded during the alumina conveying period, the current of air compressors running at unloaded during the alumina conveying period, the voltage of air compressors running at unloaded during the alumina conveying period, the power factor of air compressors, and the average duration of alumina conveying per day; determining the third air compressor operation power consumption according to the number of air compressors running at full power during the non-alumina conveying period, the current of air compressors running at full power during the non-alumina conveying period, the voltage of air compressors running at full power during the non-alumina conveying period, the power factor of air compressors, and the average duration of non-alumina conveying per day; determining the fourth air compressor operation power consumption according to the number of air compressors running at unloaded during the non-alumina conveying period, the current of air compressors running at unloaded during the non-alumina conveying period, the voltage of air compressors running at unloaded during the non-alumina conveying period, the power factor of air compressors, and the average duration of non-alumina conveying per day; and determining the plurality of corrected power consumptions according to the first air compressor operation power consumption, the second air compressor operation power consumption, the third air compressor operation power consumption, the fourth air compressor operation power consumption, the plurality of power consumptions per ton of aluminum, and the number of days of electrolytic aluminum production corresponding to each of the power consumptions.

[0122] In an embodiment, the energy-saving measures determined by the second determination module 305 include reforming the alumina conveying method from compressed air conveying to chute conveying, reducing the air consumption of electrolytic cell crust breaking cylinders and electrolytic cell pipeline leakage treatment, reducing the air consumption of zero-energy consumption dryers, and reducing the air consumption of air compressor group control.

[0123] In an embodiment, the air compressor operation data obtained by the obtaining module 301 further includes typical tank daily average air saving, typical electrolytic tank pipeline daily average air leakage, and air pressure fluctuation reduction value, and the second determining module 305 is specifically configured to: determine air compressor operation power in a feeding period, air compressor operation power in a non-feeding period, and feeding time length according to the plurality of corrected air consumption and the plurality of corrected electricity consumption; determine energy saving amount corresponding to transformation of alumina transportation from compressed air to chute according to the air compressor operation power in the feeding period, the air compressor operation power in the non-feeding period, and the feeding time length; determine energy saving amount corresponding to electrolytic tank crust breaking air cylinder air saving and electrolytic tank pipeline leakage treatment air saving according to the typical tank daily average air saving, the typical electrolytic tank pipeline daily average air leakage, and standard specific power under local air pressure; determine energy saving amount corresponding to zero energy consumption dryer air saving according to air compressor operation energy consumption in the non-feeding period; and determine energy saving amount corresponding to air compressor group control air saving according to the air pressure fluctuation reduction value, the number of air compressors in full power operation in the non-alumina transportation period, current of air compressors in full power operation in the non-alumina transportation period, voltage of air compressors in full power operation in the non-alumina transportation period, the number of air compressors in unloading operation in the non-alumina transportation period, current of air compressors in unloading operation in the non-alumina transportation period, and voltage of air compressors in unloading operation in the non-alumina transportation period.

[0124] In an embodiment, the second determining module 305 is further configured to: determine target total energy saving amount according to the energy saving amount corresponding to transformation of alumina transportation from compressed air to chute, the energy saving amount corresponding to electrolytic tank crust breaking air cylinder air saving and electrolytic tank pipeline leakage treatment air saving, the energy saving amount corresponding to zero energy consumption dryer air saving, and the energy saving amount corresponding to air compressor group control air saving.

[0125] In an embodiment, the environment data obtained by the obtaining module 301 includes air compressor rated specific power, atmospheric pressure, actual air supply pressure, and rated air supply pressure, and the first determining module 302 is specifically configured to: determine a first ratio according to the atmospheric pressure and the actual air supply pressure; determine a second ratio according to standard atmospheric pressure and the rated air supply pressure; and determine the standard specific power according to the air compressor rated specific power, the first ratio, and the second ratio.

[0126] The device of the present application, the optional implementation manner, and the beneficial effects that can be achieved are the same as those of the above-mentioned electrolytic aluminum energy saving amount evaluation method embodiments, which will not be described here again.

[0127] The present application further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the electrolytic aluminum energy saving amount evaluation method provided by any of the above-mentioned embodiments when executing the program.

[0128] This application also provides a computer-readable medium having a computer program stored thereon, which, when executed by a processor, implements the electrolytic aluminum energy-saving assessment method provided in any of the above embodiments.

[0129] The following is for reference. Figure 4 It shows a schematic diagram of the structure of an electronic device 400 suitable for implementing the present application. Figure 4 The electronic device shown is merely an example and should not impose any limitations on the functionality and scope of this application.

[0130] like Figure 4 As shown, the electronic device 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage section 408 into a random access memory (RAM) 403. The RAM 403 also stores various programs and data required for the operation of the electronic device 400. The CPU 401, ROM 402, and RAM 403 are interconnected via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0131] The following components are connected to I / O interface 405: an input section 406 including a keyboard, mouse, etc.; an output section 407 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to I / O interface 405 as needed. A removable medium 411, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 410 as needed so that computer programs read from it can be installed into storage section 408 as needed.

[0132] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 409, and / or installed from removable medium 411. When the computer program is executed by central processing unit (CPU) 401, it performs the functions defined above in the system of this application.

[0133] It should be noted that computer-readable media in this disclosure can be computer-readable storage media, computer-readable signal media or any combination thereof. Computer-readable storage media can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or any suitable combination of the above. More specific examples of computer-readable storage media can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this disclosure, computer-readable storage media can be any tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus or device. In this disclosure, a computer-readable signal medium can include a computer-readable storage medium in baseband or propagated as a carrier wave in a propagated data signal, which can contain or store a program for use by or in connection with an instruction execution system, apparatus or device. The propagated data signal can take any of a variety of forms, including but not limited to electro-magnetic, optical, or any suitable combination of the above. Computer-readable signal media can be any computer-readable medium that is not a computer-readable storage medium, and that can communicate, propagate or transport a program for use by or in connection with an instruction execution system, apparatus or device. Program code contained on a computer-readable medium can be transmitted using any appropriate medium, including but not limited to wireless, wire line, optical fiber cable, RF, etc., or any suitable combination of the above.

[0134] The flow diagrams and block diagrams in the drawings are illustrations of possible architectures, functions, and operations of systems, methods, and computer program products in accordance with various embodiments of the present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks can sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0135] The modules and / or units described in the present application can be implemented by software or by hardware. The described modules and / or units can also be arranged in a processor, for example, can be described as: a processor includes an acquisition module, a first determination module, a first correction module, a second correction module and a second determination module. In some cases, the names of these modules do not constitute a limitation on the modules themselves.

[0136] As another aspect, the present application also provides a computer readable medium, which can be included in the device described in the above embodiments, or can exist independently without being assembled into the device. The computer readable medium carries one or more programs, which, when executed by the device, cause the device to perform the following operations:

[0137] The energy consumption data, air compressor operation data and environment data are acquired, wherein the energy consumption data includes multiple power consumptions, multiple gas consumptions and multiple aluminum electrolysis productions, the multiple power consumptions, the multiple gas consumptions and the multiple aluminum electrolysis productions are time series values, the time series acquisition times are consistent, and the time series acquisition time intervals are all preset time intervals; for each power consumption, the specific power corresponding to the power consumption is determined according to the power consumption and the gas consumption at the same acquisition time, and the standard specific power corresponding to each specific power is determined according to the environment data; each gas consumption is corrected according to the multiple specific powers and the standard specific power corresponding to each specific power, to obtain multiple corrected gas consumptions; the ton aluminum power consumption corresponding to each power consumption is determined according to the multiple power consumptions and the aluminum electrolysis production at the same acquisition time as each power consumption, and the multiple corrected power consumptions are determined according to the air compressor operation data, the multiple ton aluminum power consumptions and the aluminum electrolysis production days corresponding to each power consumption; the energy saving amount corresponding to each energy saving measure is determined according to the multiple corrected gas consumptions and the multiple corrected power consumptions.

[0138] According to the technical solution of the present application, energy consumption data, air compressor operation data and environmental data are obtained; wherein the energy consumption data includes multiple power consumptions, multiple gas consumptions and multiple aluminum electrolysis productions, the multiple power consumptions, the multiple gas consumptions and the multiple aluminum electrolysis productions are time series values, and the time series collection times are consistent, and the time series collection time intervals are all preset time intervals; for each power consumption, the corresponding specific power of the power consumption is determined according to the power consumption and the gas consumption of the same collection time, and the corresponding standard specific power of each specific power is determined according to the environmental data; each gas consumption is corrected according to the multiple specific powers and the corresponding standard specific power of each specific power, to obtain multiple corrected gas consumptions; the corresponding ton aluminum power consumption of each power consumption is determined according to the multiple power consumptions and the aluminum electrolysis production of the same collection time as each power consumption, and the multiple corrected power consumptions are determined according to the air compressor operation data, the multiple ton aluminum power consumptions and the aluminum electrolysis production days corresponding to each power consumption; the corresponding energy saving amount of each energy saving measure is determined according to the multiple corrected gas consumptions and the multiple corrected power consumptions. That is, the scheme of the present application corrects the gas consumption by specific power and standard specific power, and corrects the power consumption by ton aluminum power consumption, thereby improving the accuracy of the data manually recorded by the staff, avoiding the problem that the statistical data is difficult to accurately reflect the running state change of the machine in the aluminum electrolysis process, and reducing the statistical error rate of the power consumption and the gas consumption. Moreover, the corresponding energy saving amount of the energy saving measure is determined according to the corrected gas consumption and power consumption, thereby improving the accuracy of energy saving amount evaluation.

[0139] The present application also provides a computer program product, comprising a computer program which, when executed by a processor, implements the aluminum electrolysis energy saving amount evaluation method provided by any of the embodiments of the present application.

[0140] In the implementation process of the computer program product, the computer program code for performing the operations of the present application can be written in one or more programming languages or combinations thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming languages such as "C" language or similar programming languages. The program code can be executed completely on a user computer, partially on a user computer, as an independent software package, partially on a user computer and partially on a remote computer, or completely on a remote computer or server. In the case involving a remote computer, the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, through the Internet by using an Internet service provider).

[0141] It should be understood that the various forms of flow shown above can be re-ordered, added to, or have steps deleted, for example. The steps recited in the present application can be performed in parallel, in series, or in different orders, as long as the desired results of the present application are achieved, and are not limited herein.

[0142] The foregoing detailed description has set forth various embodiments of the devices and / or methods via the use of specific terminology. However, embodiments thereof can be practiced with the exact description not being limited to the embodiments described. In some embodiments, the techniques described can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the software can be executed in a processor, which can be located in a desktop, laptop, server or peer computer. The software can be transmittable from a remote source (e.g., a management server) through a computer network. Further, while various embodiments can have been described as being a specific instance, other embodiments can exist that are unified by the subject matter of the present disclosure, and the specific instance described should not limit the scope of the claims that follow the detailed description. Although the present application has been described in accordance with the embodiments shown, one of ordinary skill in the art will readily recognize that there could be variations to the embodiments and changes to the present application. Accordingly, the present application is not limited to that precisely as shown and described.

Claims

1. A method of evaluating energy saving in electrolytic aluminum production, characterized by, The method comprises: acquiring energy consumption data, air compressor operation data and environmental data; wherein the energy consumption data comprises multiple power consumptions, multiple gas consumptions and multiple electrolytic aluminum productions, the multiple power consumptions, the multiple gas consumptions and the multiple electrolytic aluminum productions are time series values, the collection time of the time series is consistent, and the collection time interval of the time series is a preset time interval; for each power consumption, determining the specific power corresponding to the power consumption according to the power consumption and the gas consumption at the same collection time, and determining the standard specific power corresponding to each specific power according to the environmental data; correcting each gas consumption according to multiple specific powers and the standard specific power corresponding to each specific power to obtain multiple corrected gas consumptions; determining the ton aluminum power consumption corresponding to each power consumption according to the multiple power consumptions and the electrolytic aluminum production at the same collection time as each power consumption, and determining multiple corrected power consumptions according to the air compressor operation data, multiple ton aluminum power consumptions and the electrolytic aluminum production days corresponding to each power consumption; determining the energy saving amount corresponding to each energy saving measure according to the multiple corrected gas consumptions and the multiple corrected power consumptions.

2. The method of claim 1, wherein, The air compressor operation data comprises the number of air compressors running at full power during the alumina conveying period, the current of the air compressors running at full power during the alumina conveying period, the voltage of the air compressors running at full power during the alumina conveying period, the power factor of the air compressor, the average duration of the alumina conveying period, the number of air compressors running at unload during the alumina conveying period, the current of the air compressors running at unload during the alumina conveying period, the voltage of the air compressors running at unload during the alumina conveying period, the number of air compressors running at full power during the non-alumina conveying period, the current of the air compressors running at full power during the non-alumina conveying period, the voltage of the air compressors running at full power during the non-alumina conveying period, the average duration of the non-alumina conveying period, the number of air compressors running at unload during the non-alumina conveying period, the current of the air compressors running at unload during the non-alumina conveying period, and the voltage of the air compressors running at unload during the non-alumina conveying period.

3. The method of claim 2, wherein, The method comprises: determining the running power of the air compressor in the first working condition according to the number of air compressors running at full power during the alumina conveying period, the current of the air compressors running at full power during the alumina conveying period, the voltage of the air compressors running at full power during the alumina conveying period, the power factor of the air compressor and the average duration of the alumina conveying period; determining the running power of the air compressor in the second working condition according to the number of air compressors running at unload during the alumina conveying period, the current of the air compressors running at unload during the alumina conveying period, the voltage of the air compressors running at unload during the alumina conveying period, the power factor of the air compressor and the average duration of the alumina conveying period; determining the running power of the air compressor in the third working condition according to the number of air compressors running at full power during the non-alumina conveying period, the current of the air compressors running at full power during the non-alumina conveying period, the voltage of the air compressors running at full power during the non-alumina conveying period, the power factor of the air compressor and the average duration of the non-alumina conveying period; Determine the running electricity of the air compressor in the fourth working condition according to the number of unloaded running air compressors in the non-bauxite conveying period, the unloaded running air compressor current in the non-bauxite conveying period, the unloaded running air compressor voltage in the non-bauxite conveying period, the air compressor power factor, and the average length of the non-bauxite conveying day; Determine the plurality of corrected electricity consumptions according to the running electricity of the air compressor in the first working condition, the running electricity of the air compressor in the second working condition, the running electricity of the air compressor in the third working condition, the running electricity of the air compressor in the fourth working condition, the plurality of electricity consumptions per ton of aluminum, and the number of electrolytic aluminum production days corresponding to each electricity consumption.

4. The method of claim 3, wherein, The energy-saving measures include transforming the compressed air conveying of bauxite into chute conveying, air saving of the crust breaking cylinder of the electrolytic cell and air saving of the electrolytic cell pipeline leakage treatment, air saving of the zero-energy consumption dryer, and air saving of the air compressor group control.

5. The method of claim 4, wherein, The air compressor running data further includes the average air saving amount of a typical cell per day, the average air leakage amount of a typical electrolytic cell pipeline per day, and the air pressure fluctuation reduction value, and the determination of the energy saving amount corresponding to each energy-saving measure according to the plurality of corrected gas consumptions and the plurality of corrected electricity consumptions comprises: Determine the air compressor running power in the conveying period, the air compressor running power in the non-conveying period, and the conveying time length according to the plurality of corrected gas consumptions and the plurality of corrected electricity consumptions; Determine the energy saving amount corresponding to the transformation of the compressed air conveying of bauxite into chute conveying according to the air compressor running power in the conveying period, the air compressor running power in the non-conveying period, and the conveying time length; Determine the energy saving amount corresponding to the air saving of the crust breaking cylinder of the electrolytic cell and the air saving of the electrolytic cell pipeline leakage treatment according to the average air saving amount of a typical cell per day, the average air leakage amount of a typical electrolytic cell pipeline per day, and the standard specific power under the local air pressure; Determine the energy saving amount corresponding to the air saving of the zero-energy consumption dryer according to the air compressor running energy consumption in the non-conveying period; Determine the energy saving amount corresponding to the air saving of the air compressor group control according to the air pressure fluctuation reduction value, the number of full-power running air compressors in the non-bauxite conveying period, the full-power running air compressor current in the non-bauxite conveying period, the full-power running air compressor voltage in the non-bauxite conveying period, the number of unloaded running air compressors in the non-bauxite conveying period, the unloaded running air compressor current in the non-bauxite conveying period, and the unloaded running air compressor voltage in the non-bauxite conveying period.

6. The method of claim 5, wherein, The method further comprises: Determine the target total energy saving amount according to the energy saving amount corresponding to the transformation of the compressed air conveying of bauxite into chute conveying, the energy saving amount corresponding to the air saving of the crust breaking cylinder of the electrolytic cell and the air saving of the electrolytic cell pipeline leakage treatment, the energy saving amount corresponding to the air saving of the zero-energy consumption dryer, and the energy saving amount corresponding to the air saving of the air compressor group control.

7. The method according to any one of claims 1 to 6, characterized in that, The environmental data includes the rated specific power of the air compressor, the atmospheric pressure, the actual air supply pressure, and the rated air supply pressure, and the determination of the standard specific power corresponding to each specific power according to the environmental data comprises: Determine a first ratio according to the atmospheric pressure and the actual air supply pressure; Determine a second ratio according to the standard atmospheric pressure and the rated air supply pressure; Determine the standard specific power according to the rated specific power of the air compressor, the first ratio, and the second ratio.

8. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor implements the electrolytic aluminum energy-saving evaluation method as claimed in any one of claims 1 to 7 when executing the program.

9. A computer readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the electrolytic aluminum energy-saving evaluation method as claimed in any one of claims 1 to 7.

10. A computer program product comprising a computer program, characterized in that, The computer program implements the electrolytic aluminum energy-saving evaluation method as claimed in any one of claims 1 to 7 when executed by the processor.

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