Power cable carbon footprint accounting method for balancing product quality and carbon emission

Abstract

The invention relates to the technical field of carbon footprint accounting, in particular to a power cable carbon footprint accounting method for balancing product quality and carbon emission, and the method comprises the steps: obtaining the predicted life and the rated electric energy transmission rate of a cable, and taking the product of the rated electric energy transmission rate and the standard predicted life as the total function unit of the cable; corresponding carbon emission factor predicted values of the cable in a plurality of time periods are obtained; calculating the first carbon emission of the cable in the use stage; obtaining a second carbon emission of the cable in a life cycle except the use stage; dividing the sum of the first carbon emission amount and the second carbon emission amount by the total functional unit amount to obtain a functional unit carbon footprint of the cable; and giving an alarm when the function unit carbon footprint is greater than a preset threshold value. According to the invention, the environmental protection property of the power cable is reflected more comprehensively and accurately.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon footprint accounting. More specifically, the present invention relates to a method for carbon footprint accounting of power cables that balances product quality and carbon emissions. Background Art

[0002] The entire life cycle of power cables, including the production stage, usage stage, installation stage, and end-of-life recycling stage, may directly or indirectly generate carbon emissions at each link. For example: In the production stage, the production process of the metal materials (such as copper, aluminum, etc.) of power cables usually requires a large amount of electricity, and the production of electricity often relies on burning fossil fuels, thus bringing carbon emissions; the plastic outer shells of power cables are generally made of petroleum or natural gas, and carbon emissions will also be generated during the production and processing of these materials. In the usage stage, although the power cables themselves do not directly emit carbon, there may be power losses during their transmission process, which means that in order to meet the electricity demand, additional electricity needs to be generated, and the production of this additional electricity will also bring carbon emissions.

[0003] As an important electrical equipment in power engineering, the quality of power cables is closely related to the carbon emission level. The green manufacturing and efficient utilization of power cables are directly related to the environmental benefits and sustainability of power engineering. Existing technologies usually calculate the total life cycle carbon footprint of power cables and use the size of the total life cycle carbon footprint of power cables as the standard for whether the power cables are environmentally friendly. However, the inventor found that since power cables with stronger transmission capabilities are usually thicker, the total life cycle carbon footprint of power cables with stronger transmission capabilities is usually greater than that of power cables with weaker transmission capabilities. In actual applications, power cables with stronger transmission capabilities may be able to replace multiple power cables with weaker transmission capabilities. At this time, it is difficult to compare the sum of the carbon footprints of multiple power cables with weaker capabilities with the carbon footprint of a single power cable with stronger capabilities. Therefore, it is difficult to evaluate the environmental friendliness of power cables with stronger transmission capabilities and power cables with weaker transmission capabilities, that is, it is difficult to evaluate the environmental friendliness of power cables.

[0004] Based on this, using the size of the total life cycle carbon footprint as the standard for judging the environmental friendliness of power cables has one-sidedness and incompleteness and cannot accurately reflect the overall environmental benefits of power cables in actual applications. Summary of the Invention

[0005] To solve the above technical problem that using the size of the total life cycle carbon footprint as the standard for judging the environmental friendliness of power cables has one-sidedness and incompleteness, the present invention provides a method for carbon footprint accounting of power cables that balances product quality and carbon emissions.

[0006] A method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions includes: obtaining the predicted life of the cable and the rated electric energy transmission rate, and taking the product of the rated electric energy transmission rate and the standard predicted life as the total amount of functional units of the cable; obtaining the predicted values of carbon emission factors corresponding to the cable in multiple time periods, where the time length of each time period is the same; calculating the first carbon emission of the cable during the use stage : , where F i is the predicted value of the carbon emission factor in the i time period during the use stage of the cable, I is the current value of a preset size, ρ is the resistivity of the conductive material corresponding to the cable, L is the length of the cable, A is the cross-sectional area of the conductive material of the cable; obtaining the second carbon emission of the cable during the life cycle other than the use stage, where the second carbon emissions of each cable are the same; dividing the sum of the first carbon emission and the second carbon emission by the total amount of functional units to obtain the functional unit carbon footprint of the cable; and alarming in response to the functional unit carbon footprint being greater than a preset threshold.

[0007] Preferably, obtaining the predicted life of the cable includes: obtaining the average value of the actual lives of multiple cables, denoted as the first predicted value; after inputting the environmental data of the area where the cable is used into the life prediction model, determining the life prediction value output by the life prediction model as the second predicted value, where the environmental data includes the mean of the annual average temperature, the mean of the annual average humidity, and the mean of the annual average wind speed in the area where the cable is used for consecutive years, and the consecutive years include a predetermined number of years; and determining the average value of the first predicted value and the second predicted value as the predicted life of the power cable.

[0008] Preferably, obtaining the environmental data of the area where the cable is used includes: obtaining the annual average temperature, the annual average humidity, and the annual average wind speed of each year in the area where the cable is used for consecutive years, where the annual average temperature i in the year, the annual average humidity and the annual average wind speed satisfy: ; in the i year, on the j day, is the maximum temperature value, is the minimum temperature value, is the maximum humidity value, is the minimum humidity value, is the maximum wind speed value, is the minimum wind speed value, i is a positive integer, jis a positive integer, N is the i total number of days in the corresponding year; calculate the mean annual average temperature, the mean annual average humidity, and the mean annual average wind speed for each year in the area where the cable is used to obtain the environmental data of the area where the cable is used.

[0009] Preferably, a method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions further includes constructing the prediction model: constructing a training set, the training set includes a plurality of training data, where the training data is labeled with the actual life of a cable, and the training data includes the mean annual average temperature, the mean annual average humidity, and the mean annual average wind speed for consecutive years in the area where the corresponding cable is used; constructing a neural network model with an LSTM architecture; training the neural network model through the training set to obtain the prediction model.

[0010] Preferably, obtaining the second carbon emission includes: obtaining the length of the cable; obtaining the sum of the carbon emissions of the cable per unit length in the raw material production stage, the cable production stage, the transportation stage, and the recycling stage, denoted as the unit carbon emission, where the carbon emissions of the cable in the raw material production stage, the cable production stage, the transportation stage, and the recycling stage are all preset values; Determine the product of the unit carbon emission and the length of the cable as the second carbon emission.

[0011] Preferably, a method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions further includes, before calculating the carbon footprint of the functional unit, correcting the first carbon emission, and calculating the carbon footprint of the functional unit according to the corrected first carbon emission; where correcting the carbon footprint of the functional unit includes: collecting the historical electricity consumption in the area where the cable is located within a predetermined time period; correcting the first carbon emission according to the historical electricity consumption and the duration corresponding to the predetermined time period : , where T is the duration corresponding to the predetermined time period, W is the historical electricity consumption, P is the mean electricity consumption of multiple areas per unit time, and the exp() function is the exponential function with the natural constant e as the base.

[0012] Preferably, obtaining a current value of a preset size I includes: obtaining the output current of the load connected to the cable at consecutive M moments; calculating the current value I : , where is the output current of the load connected to the cable at the hThe magnitude of the output current at a moment, h is a positive integer.

[0013] Preferably, obtaining the cross-sectional area of the conductive material of the cable A includes: obtaining a predetermined number of segmentation points, where the segmentation points are arranged equidistantly on the cable, and the first segmentation point is located at one end of the cable, and the other segmentation point is located at the other end of the cable; obtaining the average value of the cross-sectional areas of the conductive material of the cable at all segmentation points, and denoting it as the cross-sectional area of the conductive material of the cable A .

[0014] Preferably, the formula for calculating the total amount of functional units of the cable is: ; where A is the total amount of functional units of the cable, B is the predicted life of the cable, V is the rated power transmission rate of the cable.

[0015] Preferably, the formula for calculating the carbon footprint per functional unit of the cable is: ; where F is the carbon footprint per functional unit of the cable, A is the total amount of functional units of the cable, is the second carbon emission.

[0016] The beneficial effects of the present invention are as follows: By combining the total life cycle carbon footprint of the power cable with the transmission capacity of the cable (such as the amount of electric energy that can be transmitted per unit time), the present invention calculates the carbon emissions generated per unit transmission capacity. The environmental friendliness of the power cable not only depends on the total life cycle carbon footprint, but is comprehensively evaluated through the carbon footprint per unit transmission capacity. By considering the efficiency of the power cable in transmitting electric energy during application, the present invention can more fairly compare the environmental friendliness of cables with different transmission capacities. Based on this, the present invention more comprehensively and accurately reflects the environmental friendliness of the power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By referring to the drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present invention will become easy to understand. In the drawings, several embodiments of the present invention are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, where: Figure 1 is a flowchart of the steps of a method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0019] The following will describe in detail the specific implementation manners of the present invention in conjunction with the accompanying drawings.

[0020] Figure 1 It is a step flow chart of a method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions according to an embodiment of the present invention.

[0021] As Figure 1 shown, a method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions includes steps S1 to S6.

[0022] Step S1: Obtain the predicted life of the cable and the rated electric energy transmission rate, and use the product of the rated electric energy transmission rate and the standard predicted life as the total amount of functional units of the cable.

[0023] In one embodiment, the formula for calculating the total amount of functional units of the cable is: ; where A is the total amount of functional units of the cable, B is the predicted life of the cable, V is the rated electric energy transmission rate of the cable.

[0024] In one embodiment, obtaining the predicted life of the cable includes: obtaining the average value of the actual lives of multiple cables, denoted as the first predicted value; after inputting the environmental data of the area where the cable is used into the life prediction model, determining the life prediction value output by the life prediction model as the second predicted value, where the environmental data includes the mean value of the annual average temperature, the mean value of the annual average humidity, and the mean value of the annual average wind speed in the area where the cable is used in consecutive years, and the consecutive years include a predetermined number of years; determining the average value of the first predicted value and the second predicted value as the predicted life of the power cable.

[0025] In one embodiment, obtaining the environmental data of the area where the cable is used includes: obtaining the annual average temperature, the annual average humidity, and the annual average wind speed in each year of the area where the cable is used in consecutive years, where the annual average temperature i in the th year, the annual average humidity , and the annual average wind speed satisfy: ; In the i th year of thej In a day, is the maximum temperature value, is the minimum temperature value, is the maximum humidity value, is the minimum humidity value, is the maximum wind speed value, is the minimum wind speed value, i is a positive integer, j is a positive integer, N is the i total number of days corresponding to the year; calculate the mean value of the annual average temperature, the mean value of the annual average humidity, and the mean value of the annual average wind speed for each year in the area where the cable is used to obtain the environmental data of the area where the cable is used.

[0026] In one embodiment, constructing the prediction model includes: constructing a training set, the training set including a plurality of training data, wherein the training data is labeled with the actual life of a cable, and the training data includes the mean value of the annual average temperature, the mean value of the annual average humidity, and the mean value of the annual average wind speed for consecutive years in the area where the corresponding cable is used; constructing a neural network model with an LSTM architecture; training the neural network model through the training set to obtain the prediction model.

[0027] Step S2: Obtain the predicted values of the carbon emission factors corresponding to the cable in multiple time periods.

[0028] Wherein, the time length of each time period is the same, and is t .

[0029] In one embodiment, obtaining the predicted value of the carbon emission factor corresponding to any time period includes: determining the year corresponding to the time period, and taking the carbon emission factor predicted for the year by the country as the carbon emission factor corresponding to the time period.

[0030] Step S3: Calculate the first carbon emission amount during the use stage of the cable.

[0031] Wherein, calculating the first carbon emission amount during the use stage of the cable .

[0032] F i is the predicted value of the carbon emission factor for the i time period during the use stage of the cable, I is a current value with a preset size, ρ is the resistivity of the conductive material corresponding to the cable, L is the length of the cable, A is the cross-sectional area of the conductive material of the cable.

[0033] In one embodiment, a current value of a preset size is obtained I including: obtaining the output current of a load for connection to a cable at consecutive M moments; calculating the current value I : , where is the magnitude of the output current of the load for connection to the cable at the h th moment, h being a positive integer

[0034] It should be noted that since the square of the current value is used to calculate the first carbon emission, the present invention takes the mean of the squares of the output currents of the load for connection to the cable (i.e., a system, device, etc. that outputs current to the cable to make the cable conductive when using the cable) at each moment within a certain time period as the square of the current value I , that is to say, the actual formula is I . .

[0035] In one embodiment, obtaining the cross-sectional area of the conductive material of the cable A includes: obtaining a predetermined number of segmentation points, where the segmentation points are arranged equidistantly on the cable, and the first segmentation point is located at one end of the cable, and the other segmentation point is located at the other end of the cable; obtaining the mean of the cross-sectional areas of the conductive material of the cable at all segmentation points, denoted as the cross-sectional area of the conductive material of the cable A .

[0036] It should be noted that if only the cross-sectional area of the conductive material of the cable at a single position is measured, the measurement result may be too high or too low due to certain special circumstances (such as local damage, manufacturing defects). By taking the average of multiple segmentation points, the actual performance of the cable can be estimated more accurately. Furthermore, considering the non-uniformity of the conductive material of the cable, by obtaining the cross-sectional areas of the conductive material at equidistantly distributed segmentation points to calculate the cross-sectional area of the conductive material of the cable A , the value of the first carbon emission A calculated through the cross-sectional area when the cable is in use is closer to the true value

[0037] Further, it also includes, before calculating the carbon footprint of the functional unit, correcting the first carbon emission and calculating the carbon footprint of the functional unit according to the corrected first carbon emission ; correcting the carbon footprint of the functional unit in Make corrections: , where T is the duration corresponding to the said predetermined time period, W is the said historical electricity consumption, P is the average electricity consumption of multiple regions per unit time, and the exp() function is the exponential function with the natural constant e as the base, is the corrected first carbon emission. In one embodiment, calculating the electricity consumption of any region per unit time includes: obtaining the electricity consumption of the region within the predetermined time period, and dividing the electricity consumption of the region within the predetermined time period by the electricity consumption of the region within the predetermined time period to obtain the electricity consumption of the region per unit time. It should be noted that the region where the cable is located is: when using the cable, the region where the cable is located.

[0038] Among them, the greater the average electricity consumption of multiple regions per unit time, the smaller the corrected first carbon emission; the greater the ratio of the historical electricity consumption of the region where the cable is located within the predetermined time period to the duration corresponding to the said predetermined time period (this ratio is the electricity consumption of the region where the cable is located per unit time), the greater the corrected first carbon emission.

[0039] It should be noted that the greater the electricity consumption of the region where the cable is located per unit time (i.e., ), it indicates that the region is electricity-intensive and has relatively high carbon emissions; the smaller the electricity consumption of the region where the cable is located per unit time, it may indicate that the region where the cable is located has high energy efficiency or low electricity consumption, and thus less carbon emissions. When the average P is greater than the electricity consumption of the region where the cable is located per unit time, the corrected first carbon emission is less than the first carbon emission before correction; when the average P is less than the electricity consumption of the region where the cable is located per unit time, the corrected first carbon emission is greater than the first carbon emission before correction.

[0040] Step S4: Obtain the second carbon emission of the cable in the life cycle other than the use stage.

[0041] It should be noted that the "cable" mentioned in the present invention can be any one of multiple completely identical (i.e., the same type, the same model, the same material, the same size, etc.) cables. The second emissions of each cable are the same.

[0042] In one embodiment, obtaining the second carbon emission includes: obtaining the length of the cable; obtaining the sum of the carbon emissions of the cable per unit length in the raw material production stage, cable production stage, transportation stage, and recycling stage, which is denoted as the unit carbon emission. The carbon emissions of the cable in the raw material production stage, cable production stage, transportation stage, and recycling stage are all preset values; determining the product of the unit carbon emission and the length of the cable as the second carbon emission.

[0043] It should be noted that in the raw material production stage of the cable, cable raw materials (such as copper, aluminum, plastic, etc.) are obtained and carbon emissions are generated. In the cable production stage, that is, the manufacturing process of the cable (processing, wire drawing, stranding, etc.) generates carbon emissions. Carbon emissions are generated during the transportation process of transporting the cable from the production plant to the destination. Carbon emissions may be generated when the cable is discarded and recycled. The carbon emissions generated by the cable per unit length in each stage are all empirical values.

[0044] In one embodiment, taking the cable production stage as an example, the specific method for obtaining the empirical value of the carbon emissions generated by the cable per unit length in each stage is: obtaining the length of the cable produced in the production stage within a certain period of time in the past (for example, within 3 years) and the total value of the carbon emissions generated during the production of this length; dividing the above-mentioned "total value of carbon emissions" by the corresponding "length of the cable produced" can obtain the empirical value of the carbon emissions caused by the cable per unit length in the "cable production stage".

[0045] Step S5: Divide the sum of the first carbon emission and the second carbon emission by the total amount of the functional unit to obtain the functional unit carbon footprint of the cable.

[0046] Among them, the formula for calculating the functional unit carbon footprint of the cable is: ; where F is the functional unit carbon footprint of the cable, A is the total amount of the functional unit of the cable, is the second carbon emission.

[0047] It should be noted that the sum of the first carbon emission and the second carbon emission is the carbon emission caused by the cable throughout its life cycle (from the stage of making the cable raw materials until the stage where the cable is discarded and recycled). Since the functional unit carbon footprint of the cable is obtained by dividing the sum of the first carbon emission and the second carbon emission by the total amount of the functional unit, the unit carbon footprint represents the carbon emissions directly and indirectly generated when the cable transmits a certain amount of electrical energy. Taking an example to illustrate the functional unit carbon footprint of the cable: the first carbon emission of a cable in its life cycle is K 1 (kg CO2), the second carbon emission is K 1 (kgCO2), and the total amount of the functional unit: 1000 kWh (kilowatt-hour). Then, when transmitting 1 kWh of electrical energy, the atmosphere actually increases by Carbon emissions in (kg CO2).

[0048] Step S6: In response to the functional unit carbon footprint being greater than a preset threshold, an alarm is given.

[0049] It should be noted that the smaller the functional unit carbon footprint, the less carbon emissions are output to the atmosphere when transmitting a certain amount of electrical energy, and the stronger the environmental friendliness. When the functional unit carbon footprint of the cable is small, it helps to reduce greenhouse gas emissions. Therefore, when the functional unit carbon footprint of the cable is too large, that is, the functional unit carbon footprint is greater than the threshold, an alarm is given. In one embodiment, once the alarm is triggered, subsequent evaluation and analysis should be carried out to identify the reasons for the excess. For example, whether it is due to improper selection of raw materials, production process problems, or unreasonable factors in the cable design. Based on the evaluation results, it may be necessary to optimize the cable design or process flow and take measures to reduce carbon emissions.

[0050] In the description of this specification, the meanings of "a plurality of" and "several" are at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0051] Although this specification has shown and described multiple embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, alterations, and alternative ways without departing from the spirit and idea of the present invention. It should be understood that various alternative solutions to the embodiments of the present invention described herein can be adopted in the process of practicing the present invention.

Claims

1. A carbon footprint accounting method for power cables that balances product quality and carbon emissions, characterized in that, Including: Obtaining the predicted life of the cable and the rated electric energy transmission rate, and taking the product of the rated electric energy transmission rate and the standard predicted life as the total amount of functional units of the cable; Obtain the predicted values of the carbon emission factors corresponding to the cable in multiple time periods, where the time lengths of each time period are the same and are all t ; Calculate the first carbon emission of the cable during the usage stage : , where F i is the predicted value of the carbon emission factor for the i time period of the cable during the usage stage, I is the current value of a preset size, ρ is the resistivity of the conductive material corresponding to the cable, L is the length of the cable, A is the cross-sectional area of the conductive material of the cable; Obtaining the second carbon emission amount in the life cycle of the cable other than the usage stage, where the second carbon emission amount of each cable is the same; dividing the sum of the first carbon emission amount and the second carbon emission amount by the total amount of functional units to obtain the carbon footprint per functional unit of the cable; In response to the carbon footprint per functional unit being greater than a preset threshold, an alarm is issued.

2. The carbon footprint accounting method for power cables that balances product quality and carbon emissions according to claim 1, characterized in that, The obtaining of the predicted life of the cable includes: Obtaining the average value of the actual lives of multiple cables, denoted as the first predicted value; After inputting the environmental data of the area where the cable is used into the life prediction model, determining the life prediction value output by the life prediction model as the second predicted value, where the environmental data includes the mean value of the annual average temperature, the mean value of the annual average humidity, and the mean value of the annual average wind speed in the area where the cable is used for a continuous number of years, and the continuous number of years includes a predetermined number of years; Determining the average value of the first predicted value and the second predicted value as the predicted life of the power cable.

3. A method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions according to claim 2, characterized in that, Obtaining the environmental data of the area where the cable is used includes: Obtain the annual average temperature, annual average humidity, and annual average wind speed in each year of the area using the cable for consecutive years, where the annual average temperature in the i nth year, the annual average humidity and the annual average wind speed meet the following: ； In the i year, on the j day, is the maximum temperature value, is the minimum temperature value, is the maximum humidity value, is the minimum humidity value, is the maximum wind speed value, is the minimum wind speed value, i is a positive integer, j is a positive integer, N is the i total number of days corresponding to the year; Calculating the mean value of the annual average temperature, the mean value of the annual average humidity, and the mean value of the annual average wind speed in each year of the area where the cable is used to obtain the environmental data of the area where the cable is used.

4. A method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions according to claim 2, characterized in that, It also includes constructing the prediction model: Constructing a training set, where the training set includes multiple training data, where the training data takes the actual life of a cable as a label, and the training data includes the mean value of the annual average temperature, the mean value of the annual average humidity, and the mean value of the annual average wind speed in a continuous number of years in the area where the corresponding cable is used; Constructing a neural network model with an LSTM architecture; Training the neural network model through the training set to obtain the prediction model.

5. A method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions according to claim 1, characterized in that, Obtaining the second carbon emission amount includes: Obtaining the length of the cable; Obtaining the sum of the carbon emission amounts of the cable per unit length in the raw material production stage, the cable production stage, the transportation stage, and the recycling stage, denoted as the carbon emission amount per unit, where the carbon emission amounts of the cable in the raw material production stage, the cable production stage, the transportation stage, and the recycling stage are all preset values; Determining the product of the carbon emission amount per unit and the length of the cable as the second carbon emission amount.

6. The carbon footprint accounting method for power cables that balances product quality and carbon emissions according to claim 1, characterized in that, It also includes, before calculating the carbon footprint of the functional unit, correcting the first carbon emission and calculating the carbon footprint of the functional unit according to the corrected first carbon emission ​ Wherein the correction of the carbon footprint per functional unit includes: Collecting the historical electricity consumption in the area where the cable is located within a predetermined time period; Correct the first carbon emission according to the historical power consumption and the duration corresponding to the predetermined time period : where T is the duration corresponding to the predetermined time period, W is the historical power consumption, P is the average power consumption of multiple regions per unit time, and the exp() function is the exponential function with the natural constant e as the base.

7. A carbon footprint accounting method for power cables that balances product quality and carbon emissions according to claim 1, characterized in that Obtain a current value of a preset size I including: Obtain the output current of a load for connection to a cable at successive M instants; Calculate the current value I : , where is the magnitude of the output current of the load used to connect to the cable at the h th moment, h is a positive integer.

8. A carbon footprint accounting method for power cables that balances product quality and carbon emissions according to claim 1, characterized in that, Obtain the cross-sectional area of the conductive material of the cable A Comprising: Obtaining a predetermined number of segmentation points, where the segmentation points are arranged equidistantly on the cable, and the first segmentation point is located at one end of the cable, and the other segmentation point is located at the other end of the cable; Obtain the mean value of the cross-sectional area of the conductive material of the cable at all segmentation points, and denote it as the cross-sectional area of the conductive material of the cable A .

9. A method for calculating the carbon footprint of a power cable that balances product quality and carbon emissions according to claim 1, characterized in that, The formula for calculating the total amount of functional units of the cable is: ； Wherein, A is the total amount of functional units of the cable, B is the predicted life of the cable, V is the rated electric energy transmission rate of the cable.

10. A carbon footprint accounting method for power cables that balances product quality and carbon emissions according to claim 1, characterized in that, The formula for calculating the carbon footprint per functional unit of the cable is: ； Among them, F is the carbon footprint of the functional unit of the cable, A is the total amount of the functional unit of the cable, is the second carbon emission.

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