Environment-friendly insulating gas full life cycle evaluation method based on entropy weight method

Abstract

The invention discloses an environment-friendly insulating gas full life cycle evaluation method based on an entropy weight method. The method comprises the following steps: collecting carbon emission data of gas in each stage of a full life cycle; performing standardization processing on the collected data, eliminating dimension influence, and obtaining standardized values of different indexes; calculating the weight of each index by using an entropy weight method according to the standardized values of different indexes; and combining the weight of each index and the carbon emission data of each stage, and calculating a comprehensive evaluation result of the full life cycle environmental influence of the gas. According to the invention, the influence of gas on the environment can be comprehensively considered by collecting the carbon emission data of each stage of the whole life cycle; standardization processing is carried out on the data, the dimensional influence is eliminated, and different indexes have comparability; index weights are calculated through an entropy weight method, and the importance degree of each index is objectively reflected; finally, a comprehensive evaluation result is obtained in combination with the weight and carbon emission data, and a scientific, comprehensive and objective quantitative basis is provided for evaluation of the environment-friendly insulating gas.

Description

Technical Field

[0001] The present invention relates to the field of data processing, and in particular to an entropy weight method-based full life cycle evaluation method for an environmentally friendly insulating gas. Background Art

[0002] Environmentally friendly insulating gas can improve the traditional insulating gas SF 6 (sulfur hexafluoride) has serious carbon emissions. However, due to the need for high-voltage insulation, any environmentally friendly insulating gas will inevitably generate a large amount of carbon emissions during its entire life cycle. Traditional evaluation of insulating gases only considers its own greenhouse effect coefficient, ignoring the carbon emissions and carbon emission control issues during the entire life cycle of insulating gas production, use, recycling, purification, testing, recharging and decomposition. There may be a higher carbon emission in the entire life cycle than SF 6 The situation has not decreased.

[0003] Therefore, in order to better reduce carbon emissions and select environmentally friendly insulating gases with lower total carbon emissions over their entire life cycle, a method is needed to scientifically evaluate and optimize the carbon emissions of insulating gases in all aspects. Summary of the invention

[0004] In view of the problem in the prior art that it is difficult to obtain the carbon emissions of environmentally friendly insulating gases throughout their life cycle, which makes it difficult to accurately select environmentally friendly insulating gases, the present invention provides a method for evaluating the entire life cycle of environmentally friendly insulating gases based on the entropy weight method. By obtaining the carbon emission data of the gas throughout its life cycle and using the entropy weight method to calculate the weights of various environmental impact indicators, the carbon emission level of the gas throughout its life cycle is systematically evaluated and quantified, and the impact of carbon emissions in each link of the entire life cycle of environmentally friendly insulating gases on the environment is clarified, so as to facilitate the selection of the most suitable environmentally friendly insulating gas.

[0005] The following is the technical solution of the present invention.

[0006] A method for evaluating the entire life cycle of an environmentally friendly insulating gas based on an entropy weight method comprises the following steps: Step 1: Collect carbon emission data of gases at all stages of their life cycle; Step 2: Standardize the collected data to eliminate the dimension effect and obtain the standardized values ​​of different indicators; Step 3: According to the standardized values ​​of different indicators, the entropy weight method is used to calculate the weight of each indicator; Step 4: Combine the weights of each indicator and the carbon emission data of each stage to calculate the comprehensive evaluation results of the environmental impact of the gas over its entire life cycle.

[0007] The present invention can comprehensively consider the impact of gases on the environment by collecting carbon emission data at all stages of the entire life cycle; standardize the data to eliminate the impact of dimensions and make different indicators comparable; use the entropy weight method to calculate the indicator weights to objectively reflect the importance of each indicator; and finally combine the weights with the carbon emission data to obtain a comprehensive evaluation result, providing a scientific, comprehensive and objective quantitative basis for the evaluation of environmentally friendly insulating gases, and facilitating the green selection and optimization of insulating gases.

[0008] Preferably, the step 2: standardizing the collected data to eliminate the dimension effect and obtain standardized values ​​of different indicators includes: Among them, x ij is the jth index value of the i-th sample, min(x j ) and max(xj) are the minimum and maximum values ​​of the jth index, respectively. i ' j is the normalized value.

[0009] Preferably, the step 3: calculating the weight of each indicator using the entropy weight method according to the standardized values ​​of different indicators, comprises: Calculate the weight of each indicator based on the standardized value; Calculate the entropy value of each indicator according to the proportion; The weight of each indicator is determined according to the entropy value.

[0010] As a preference, The calculation of the weight of each indicator according to the standardized value includes: Among them, pij is the weight of the jth indicator of the i-th sample, n is the number of samples, x i ' j is the standardized value of the jth indicator of the i-th sample: The entropy value of each indicator is calculated according to the specific weight, including: Among them, e j is the entropy value of each indicator; Determining the weight of each indicator according to the entropy value includes: Among them, w j is the weight of each indicator, and m is the number of indicators.

[0011] Preferably, the step 4: combining the weights of various indicators and the carbon emission data of each stage to calculate the comprehensive evaluation results of the environmental impact of the gas throughout its life cycle includes: A comprehensive evaluation calculation method is set according to the evaluation target, and the comprehensive evaluation calculation method is executed based on the weight and standardized value of each indicator to obtain a comprehensive evaluation result of the environmental impact of the gas over its entire life cycle.

[0012] Preferably, the comprehensive evaluation calculation method includes: Among them, w j is the weight of each indicator, m is the number of indicators, x i ' j is the standardized value of the jth indicator of the ith sample.

[0013] Preferably, the method further includes step 5, selecting the gas with the highest score as the candidate gas based on the comprehensive evaluation result of the environmental impact of the gas throughout its life cycle.

[0014] The present invention also provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor calls the computer program in the memory, the steps of the above-mentioned method for evaluating the full life cycle of an environmentally friendly insulating gas based on the entropy weight method are implemented.

[0015] The present invention also provides a storage medium, in which computer executable instructions are stored. When the computer executable instructions are loaded and executed by a processor, the steps of the above-mentioned entropy weight method-based environmentally friendly insulating gas life cycle evaluation method are implemented.

[0016] The substantial effects of the present invention include: By collecting carbon emission data at all stages of the entire life cycle of insulating gas, including production, transportation, use, and degradation, covering multiple indicators such as resource consumption, energy consumption, and greenhouse gas emissions, we can fully grasp the carbon emissions of insulating gas.

[0017] The entropy weight method is used to calculate the weight of each environmental impact indicator. By calculating the indicator proportion, entropy value and other steps, the importance of different indicators in the evaluation can be objectively reflected to avoid interference from subjective factors.

[0018] The collected data is normalized with extreme values ​​to eliminate the impact of dimensions, and then the comprehensive evaluation results are calculated based on the indicator weights and carbon emissions. This enables scientific quantification of the environmental impact of insulating gases over their entire life cycle, clearly demonstrates the extent of the impact of the gas on the environment, and provides accurate data support for the power industry to select environmentally friendly and efficient insulating gases, thus facilitating the sustainable development of the power industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a flow chart of an embodiment of the present invention; Figure 2 It is a data flow diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution will be clearly and completely described below in combination with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be understood that in various embodiments of the present invention, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0022] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0023] It should be understood that in the present invention, "plurality" refers to two or more than two. "And / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains A, B and C", "Contains A, B, C" means that A, B, and C are all included, "Contains A, B or C" means that one of A, B, and C is included, and "Contains A, B and / or C" means that any one, any two, or any three of A, B, and C are included.

[0024] The technical solution of the present invention is described in detail with specific embodiments below. The embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0025] Example: A full life cycle assessment method for environmentally friendly insulating gas based on entropy weight method, such as Figure 1 and Figure 2 As shown, the following steps are included: Step 1: Collect carbon emission data of gases at all stages of their life cycle.

[0026] include: Carbon emissions data at the production stage: resource consumption (raw material extraction and processing), energy consumption (energy consumption in the production process, such as electricity and heat), greenhouse gas emissions (by-products produced in chemical reactions, such as CO 2 , SF 4 etc.), SF 6 Gas emissions (SF 6 At least one of the following: Carbon emission data during the transportation phase: at least one of the fuel consumption of the transportation vehicle (such as diesel trucks, ships, etc.) and the leakage during transportation; Use phase (such as SF 6 Carbon emission data of gas used in electrical equipment for 30 years: leakage during equipment operation (SF 6 The leakage rate is usually 0.5%-1% / year), at least one of the emissions during equipment maintenance and overhaul; Carbon emission data in the degradation stage: SF 6 At least one of the consumption of resources required for gas recovery and treatment (such as pyrolysis or chemical conversion) and leakage of the unrecovered portion.

[0027] Among them, the SF per kilogram obtained in this embodiment is 6 The carbon emission data of insulating gas at each stage of its life cycle are shown in Table 1. The unit of all data in the table is kgCO 2 e: Table 1 Step 2: Standardize the collected data to eliminate the dimension effect and obtain the standardized values ​​of different indicators.

[0028] include: Among them, x ij is the jth index value of the i-th sample, min(x j ) and max(xj) are the minimum and maximum values ​​of the jth index, respectively. i ' j is the normalized value.

[0029] The standardized data are shown in Table 2: Table 2 Other greenhouse gas emissions SF6 gas emissions Energy consumption Resource consumption Production 0.75 0.01 0.91 0.67 transportation 0.10 0.00 0.00 0.00 use 0.00 1.00 1.00 1.00 degradation 1.00 0.03 0.05 0.33 Step 3: According to the standardized values ​​of different indicators, the entropy weight method is used to calculate the weight of each indicator.

[0030] include: The weight of each indicator is calculated based on the standardized value, including: Among them, pij is the weight of the jth indicator of the i-th sample, n is the number of samples, x i ' j is the standardized value of the jth indicator of the i-th sample: The entropy value of each indicator is calculated according to the proportion, including: Among them, e j is the entropy value of each indicator; The weight of each indicator is determined according to the entropy value, including: Among them, w j is the weight of each indicator, and m is the number of indicators, which is 4 in this embodiment.

[0031] The final results are shown in Table 3: Table 3 Other greenhouse gas emissions SF6 gas emissions Energy consumption Resource consumption Weight 0.30 0.32 0.10 0.28 Step 4: Combine the weights of each indicator and the carbon emission data of each stage to calculate the comprehensive evaluation results of the environmental impact of the gas over its entire life cycle.

[0032] include: A comprehensive evaluation calculation method is set according to the evaluation target, and the comprehensive evaluation calculation method is executed based on the weight and standardized value of each indicator to obtain a comprehensive evaluation result of the environmental impact of the gas over its entire life cycle.

[0033] Among them, w j is the weight of each indicator, m is the number of indicators, x i ' j is the standardized value of the jth indicator of the ith sample.

[0034] Finally, the comprehensive score of the gas in this embodiment is: 0.5501 (full score 1.0), SF 6 Gas emissions (weight 0.32) contribute the most to the comprehensive score, with a standardized value of 0.705; other greenhouse gas emissions (weight 0.30) and resource consumption (weight 0.28) also contribute significantly; energy consumption (weight 0.10) contributes relatively little. Based on this, the excess carbon emission point of new insulating gases can be quickly determined, providing an important basis for insulating gas management and future process optimization.

[0035] This embodiment can comprehensively consider the impact of gas on the environment by collecting carbon emission data at all stages of the entire life cycle; standardize the data to eliminate the impact of dimensions and make different indicators comparable; use the entropy weight method to calculate the indicator weights to objectively reflect the importance of each indicator; and finally combine the weights with the carbon emission data to obtain a comprehensive evaluation result, providing a scientific, comprehensive and objective quantitative basis for the evaluation of environmentally friendly insulating gases, and facilitating the green selection and optimization of insulating gases.

[0036] In addition, this embodiment may further include step 5, selecting the gas with the highest score as the candidate gas according to the comprehensive evaluation result of the environmental impact of the gas throughout its life cycle.

[0037] In addition, this embodiment also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor calls the computer program in the memory, it implements the steps of the above-mentioned method for evaluating the entire life cycle of an environmentally friendly insulating gas based on the entropy weight method.

[0038] In addition, this embodiment also provides a storage medium, which stores computer executable instructions. When the computer executable instructions are loaded and executed by the processor, the steps of the above-mentioned entropy weight method-based environmentally friendly insulating gas life cycle evaluation method are implemented.

[0039] The substantial effects of this embodiment include: By collecting carbon emission data at all stages of the entire life cycle of insulating gas, including production, transportation, use, and degradation, covering multiple indicators such as resource consumption, energy consumption, and greenhouse gas emissions, we can fully grasp the carbon emissions of insulating gas.

[0040] The entropy weight method is used to calculate the weight of each environmental impact indicator. By calculating the indicator proportion, entropy value and other steps, the importance of different indicators in the evaluation can be objectively reflected to avoid interference from subjective factors.

[0041] The collected data is normalized with extreme values ​​to eliminate the impact of dimensions, and then the comprehensive evaluation results are calculated based on the indicator weights and carbon emissions. This enables scientific quantification of the environmental impact of insulating gases over their entire life cycle, clearly demonstrates the extent of the impact of the gas on the environment, and provides accurate data support for the power industry to select environmentally friendly and efficient insulating gases, thus facilitating the sustainable development of the power industry.

[0042] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the specific device can be divided into different functional modules to complete all or part of the functions described above.

[0043] In the embodiments provided in the present application, it should be understood that the disclosed structures and methods can be implemented in other ways. For example, the embodiments of the structure described above are only schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another structure, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, structures or units, which can be electrical, mechanical or other forms.

[0044] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0045] In addition, each functional unit in the embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0046] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0047] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for evaluating the entire life cycle of an environmentally friendly insulating gas based on an entropy weight method, characterized in that: The following steps are involved: Step 1: Collect carbon emission data of gases at all stages of their life cycle; Step 2: Standardize the collected data to eliminate the dimension effect and obtain the standardized values ​​of different indicators; Step 3: According to the standardized values ​​of different indicators, the entropy weight method is used to calculate the weight of each indicator; Step 4: Combine the weights of each indicator and the carbon emission data of each stage to calculate the comprehensive evaluation results of the environmental impact of the gas over its entire life cycle.

2. According to claim 1, a method for evaluating the entire life cycle of an environmentally friendly insulating gas based on an entropy weight method is characterized in that: Step 1: Collect carbon emission data of gases at all stages of their life cycle, including: Carbon emission data during the production phase: at least one of resource consumption, energy consumption, greenhouse gas emissions, and SF6 gas emissions; Carbon emission data during the transportation phase: at least one of the fuel consumption of the transportation vehicle and the leakage during transportation; Carbon emission data in the use stage: at least one of the leakage during equipment operation and the emissions during equipment maintenance and overhaul; Carbon emission data in the degradation stage: at least one of the resource consumption required for the recovery and treatment of SF6 gas and the leakage of the unrecovered part.

3. The method for evaluating the entire life cycle of an environmentally friendly insulating gas based on entropy weight method according to claim 1 is characterized in that: Step 2: Standardize the collected data to eliminate the dimension effect and obtain standardized values ​​of different indicators, including: Among them, x ij is the jth index value of the i-th sample, min(x j ) and max(xj) are the minimum and maximum values ​​of the jth index, respectively. i ' j is the normalized value.

4. The method for evaluating the entire life cycle of an environmentally friendly insulating gas based on entropy weight method according to claim 1 is characterized in that: The step 3: according to the standardized values ​​of different indicators, the weight of each indicator is calculated using the entropy weight method, including: Calculate the weight of each indicator based on the standardized value; Calculate the entropy value of each indicator according to the proportion; The weight of each indicator is determined according to the entropy value.

5. The method for evaluating the entire life cycle of an environmentally friendly insulating gas based on entropy weight method according to claim 4 is characterized in that: The calculation of the weight of each indicator according to the standardized value includes: Among them, pij is the weight of the jth indicator of the i-th sample, n is the number of samples, x i ' j is the standardized value of the jth indicator of the i-th sample: The entropy value of each indicator is calculated according to the proportion, including: Among them, e j is the entropy value of each indicator; Determining the weight of each indicator according to the entropy value includes: Among them, w j is the weight of each indicator, and m is the number of indicators.

6. The method for evaluating the entire life cycle of an environmentally friendly insulating gas based on entropy weight method according to claim 1 is characterized in that: Step 4: Calculate the comprehensive evaluation results of the environmental impact of the gas throughout its life cycle by combining the weights of each indicator and the carbon emission data of each stage, including: A comprehensive evaluation calculation method is set according to the evaluation target, and the comprehensive evaluation calculation method is executed based on the weight and standardized value of each indicator to obtain a comprehensive evaluation result of the environmental impact of the gas over its entire life cycle.

7. The method for evaluating the entire life cycle of an environmentally friendly insulating gas based on the entropy weight method according to claim 6 is characterized in that: The comprehensive evaluation calculation method includes: Among them, w j is the weight of each indicator, m is the number of indicators, x i ' j is the standardized value of the jth indicator of the ith sample.

8. The method for evaluating the entire life cycle of an environmentally friendly insulating gas based on entropy weight method according to claim 1 is characterized in that: The method further includes step 5, wherein the gas with the highest score is selected as the candidate gas based on the comprehensive evaluation result of the environmental impact of the gas throughout its life cycle.

9. An electronic device, characterized in that: It includes a memory and a processor, wherein a computer program is stored in the memory, and when the processor calls the computer program in the memory, the steps of an entropy weight method-based life cycle evaluation method for environmentally friendly insulating gas are implemented as described in any one of claims 1 to 8.

10. A storage medium, characterized in that: The storage medium stores computer executable instructions, which, when loaded and executed by a processor, implement the steps of an entropy weight method-based life cycle assessment method for an environmentally friendly insulating gas as described in any one of claims 1 to 8.

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