A method and device for determining carbon emission baseline for substation construction

Abstract

The present invention discloses a method and device for determining a carbon emission baseline for substation construction, comprising: obtaining construction data and a carbon intensity reference value for all substations, calculating the carbon emissions during the construction phase based on the construction data, and calculating the carbon emission intensity based on the carbon intensity reference value and the carbon emissions during the construction phase; sorting all substations according to carbon emission intensity, obtaining a target substation with the lowest carbon emission intensity based on the number of samples, and then performing a weighted calculation to obtain a baseline value based on the carbon intensity reference values ​​and carbon emission intensities corresponding to all target substations; calculating the carbon quota profit or loss of all substations based on the baseline value to obtain a total carbon quota profit or loss; and determining whether the total carbon quota profit or loss falls within a preset profit or loss range. If so, outputting the baseline value; if not, increasing the number of samples until the total carbon quota profit or loss corresponding to the baseline value falls within the preset profit or loss range. This method achieves a quantitative evaluation of the construction phase of a low-carbon substation.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power carbon emissions, and in particular to a method and device for determining a carbon emission baseline for substation construction. Background Art

[0002] In the development of a carbon emissions trading market, allocating allowances is a challenging and fundamental task. Initial allocation of allowances primarily involves grandfathering, baseline, and auctioning. Existing research suggests that using auctions to allocate corporate allowances can overburden companies and, if implemented in the early stages of carbon market development, would be detrimental to market expansion. Grandfathering, also known as the "historical emissions allocation method," involves allocating a fixed number of allowances using historical baseline data. However, it only applies to facilities or production capacity already in operation at the start of carbon emissions trading. It cannot automatically correct for new entrants, newly added capacity, or capacity requiring additional measures.

[0003] The baseline approach determines the amount of free allowances issued based on industry carbon emission intensity reference values ​​and product output. While this approach requires higher data volume and quality than the grandfathering approach, it can incentivize companies across all emission levels to reduce greenhouse gas emissions. However, current baseline approaches are primarily used in industrial sectors such as the steel, thermal power, and power generation industries, and do not yet apply carbon emission benchmarks to substation construction. This makes the existing allowance allocation method ineffective in promoting low-carbon development in the substation industry. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and device for determining the carbon emission baseline for substation construction, which can determine the corresponding carbon emission baseline based on the construction status of the substation and realize quantitative evaluation of the low-carbon substation construction stage.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A method for determining a carbon emission baseline for substation construction, comprising:

[0007] Obtaining construction data of all substations, and calculating the carbon emissions of all substations during the construction phase based on the construction data;

[0008] Obtaining a carbon intensity reference value for all the substations, and calculating the carbon emission intensity of all the substations based on the carbon intensity reference value and the carbon emissions during the construction phase;

[0009] Sort all the substations according to the carbon emission intensity to obtain an intensity ranking;

[0010] Obtaining a sampling quantity, and sequentially obtaining the target substations with the lowest carbon emission intensity in the intensity ranking, until obtaining the target substations equivalent to the sampling quantity;

[0011] A baseline value is obtained by weighted calculation based on the carbon intensity reference amount and carbon emission intensity corresponding to all the target substations;

[0012] Calculating the carbon quota profit and loss of all the substations according to the baseline value, and obtaining the total carbon quota profit and loss;

[0013] Determine whether the total carbon quota profit or loss falls within a preset profit or loss range. If so, output the baseline value; if not, increase the number of samples until the total carbon quota profit or loss corresponding to the baseline value falls within the preset profit or loss range.

[0014] In order to solve the above technical problems, another technical solution adopted by the present invention is:

[0015] A device for determining a carbon emission baseline for substation construction includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, each step of the method for determining a carbon emission baseline for substation construction as described above is implemented.

[0016] The beneficial effects of the present invention are: after obtaining the construction data of all substations and calculating the carbon emissions of all substations during the construction phase, the intensity reference corresponding to each substation and the carbon emissions during the construction phase are obtained to calculate the carbon emission intensity and sort them. Based on the intensity sorting, a valid number of target substations with the lowest carbon emission intensity are obtained to calculate the baseline value, and then the carbon quota profit and loss of all substations are calculated based on the baseline value to determine whether the preset profit and loss range is met. Only when the preset profit and loss range is met will the corresponding baseline value be output, that is, the corresponding carbon emission baseline can be determined based on the construction situation of the substation, thereby realizing quantitative evaluation of the construction phase of the low-carbon substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flowchart of the steps of a method for determining a carbon emission baseline for substation construction according to an embodiment of the present invention;

[0018] Figure 2 This is a flowchart of another step of a method for determining a carbon emission baseline for substation construction according to an embodiment of the present invention;

[0019] Figure 3 Schematic diagram of the structure of a device for determining a carbon emission baseline for substation construction according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to explain in detail the technical content, achieved objectives and effects of the present invention, the following is an explanation in conjunction with the implementation methods and the accompanying drawings. As an important part of the power network, the substation undertakes the important task of converting voltage and transmitting electric energy. Reducing carbon emissions generated by substation construction has become an important issue facing substation design under the background of dual carbon. Therefore, conducting research on carbon emission accounting and carbon emission benchmark values ​​for substation construction can not only evaluate the carbon emissions of substation construction and promote carbon emission reduction work in substations, but also has important significance for deepening the construction of the carbon market.

[0021] Please refer to Figure 1 A method for determining a carbon emission baseline for substation construction includes:

[0022] Obtaining construction data of all substations, and calculating the carbon emissions of all substations during the construction phase based on the construction data;

[0023] Obtaining a carbon intensity reference value for all the substations, and calculating the carbon emission intensity of all the substations based on the carbon intensity reference value and the carbon emissions during the construction phase;

[0024] Sort all the substations according to the carbon emission intensity to obtain an intensity ranking;

[0025] Obtaining a sampling quantity, and sequentially obtaining the target substations with the lowest carbon emission intensity in the intensity ranking, until obtaining the target substations equivalent to the sampling quantity;

[0026] A baseline value is obtained by weighted calculation based on the carbon intensity reference amount and carbon emission intensity corresponding to all the target substations;

[0027] Calculating the carbon quota profit and loss of all the substations according to the baseline value, and obtaining the total carbon quota profit and loss;

[0028] Determine whether the total carbon quota profit or loss falls within a preset profit or loss range. If so, output the baseline value; if not, increase the number of samples until the total carbon quota profit or loss corresponding to the baseline value falls within the preset profit or loss range.

[0029] From the above description, it can be seen that the beneficial effect of the present invention is that after obtaining the construction data of all substations and calculating the carbon emissions of all substations during the construction phase, the intensity reference corresponding to each substation and the carbon emissions during the construction phase are obtained to calculate the carbon emission intensity and sort them. Based on the intensity sorting, an effective number of target substations with the lowest carbon emission intensity are obtained to calculate the baseline value, and then the carbon quota profit and loss of all substations are calculated based on the baseline value to determine whether the preset profit and loss range is met. Only when the preset profit and loss range is met, the corresponding baseline value is output, that is, the corresponding carbon emission baseline can be determined based on the construction situation of the substation, thereby realizing quantitative evaluation of the construction phase of the low-carbon substation.

[0030] Furthermore, the carbon intensity reference of the substation includes the investment amount for substation construction;

[0031] The carbon emission intensity of the substation is calculated based on the carbon intensity reference and the carbon emissions during the construction phase, including:

[0032] The carbon emission intensity is obtained according to the ratio of the carbon emission during the construction phase to the investment amount of the substation construction.

[0033] From the above description, it can be seen that by using the substation construction investment amount as a reference for the substation's carbon intensity, the substation's carbon emission intensity can be analyzed from the perspective of value, and the carbon emission intensity of each substation under value assessment can be obtained.

[0034] Furthermore, the carbon intensity reference of the substation includes the capacity of the substation main transformer;

[0035] The carbon emission intensity of the substation is calculated based on the carbon intensity reference and the carbon emissions during the construction phase, including:

[0036] The carbon emission intensity is obtained according to the ratio of the carbon emission in the construction phase to the capacity of the main transformer of the substation.

[0037] From the above description, it can be seen that using the capacity of the substation main transformer as the reference quantity of the substation's carbon intensity can analyze the substation's carbon emission intensity from the perspective of physical quantity, and obtain the carbon emission intensity of each substation under physical quantity assessment; and, constructing the substation construction carbon emission intensity index from the perspective of value and physical quantity can meet the carbon emission intensity analysis needs in different scenarios.

[0038] Furthermore, the baseline value obtained by weighted calculation based on the carbon intensity reference amount and carbon emission intensity corresponding to all the target substations includes:

[0039] Obtaining a total carbon intensity reference value based on the carbon intensity reference values ​​corresponding to all the target substations;

[0040] Obtaining a weighted amount according to a ratio of a carbon intensity reference amount corresponding to the target substation to the total carbon intensity reference amount;

[0041] The baseline value is obtained by cumulatively calculating the weighted amount corresponding to each target substation and the carbon emission intensity.

[0042] As can be seen from the above description, by calculating the weighted amount of each target substation based on the total carbon intensity reference amount and the carbon intensity reference amount of the target substation, a more reasonable baseline value can be obtained.

[0043] Furthermore, the calculating of the carbon quota profit or loss of all the substations according to the baseline value includes:

[0044] N i =∑ j N i,j =∑ j (B i ×P ij -E j );

[0045] Among them, N i N represents the total carbon quota profit or loss of all substations based on the carbon intensity reference i. i,j represents the carbon quota profit or loss of the j-th substation based on the carbon intensity reference i; B i represents the baseline value based on the carbon intensity reference i; P j represents the value of the carbon intensity reference i of the j-th substation; E j represents the carbon emissions during the construction phase of the j-th substation.

[0046] From the above description, it can be seen that by calculating the carbon quota profit and loss of all substations under different carbon intensity reference values, it is possible to analyze the corresponding carbon quota profit and loss under different baseline scenarios and meet the calculation of carbon quota profit and loss under different scenarios.

[0047] Furthermore, the determining whether the total carbon quota profit or loss falls within a preset profit or loss range includes:

[0048] According to the carbon quota profit and loss of all the substations, the number of profitable substations and the number of loss-making substations are obtained;

[0049] It is determined whether the difference between the number of profitable substations and the number of loss-making substations is less than a preset difference range, and whether the total carbon quota profit or loss is a negative value. If both are true, the baseline value is output.

[0050] From the above description, it can be seen that by analyzing the rationality of the baseline value from two levels: the number of profits and losses, and the total carbon quota profit and loss, based on the analysis of the number of profits and losses, in the early stage of market operation, it is necessary to ensure the acceptance and enthusiasm of market players to participate in transactions to ensure the smooth promotion of carbon trading, and gradually increase the difficulty of emission reduction after the transaction is normalized; based on the analysis of the total carbon quota profit and loss, it is possible to avoid the over-issuance of carbon quotas.

[0051] Furthermore, ranking all the substations according to the carbon emission intensity to obtain an intensity ranking includes:

[0052] All the substations are sorted from low to high according to the carbon emission intensity to obtain the intensity ranking.

[0053] From the above description, it can be seen that by sorting all substations from low to high in terms of carbon emission intensity, the target substation with the lowest carbon emission intensity can be obtained more quickly in the subsequent process and used to calculate the baseline value.

[0054] Furthermore, obtaining the number of samples includes:

[0055] Get the preset percentage;

[0056] Obtaining the sampling quantity according to the preset percentage and the quantity of all the substations;

[0057] Increasing the number of samples includes:

[0058] The preset percentage is increased and the updated sampling quantity is recalculated.

[0059] As can be seen from the above description, obtaining the corresponding number of samples in a percentage manner can more reasonably set the corresponding number of samples in the case of large amounts of data, thereby ensuring the accuracy of subsequent calculations of baseline values.

[0060] Furthermore, the construction data includes carbon emission data of substation construction and carbon emission data of substation equipment installation;

[0061] The carbon emissions during the construction phase of all the substations calculated based on the construction data include:

[0062] The carbon emissions during the construction phase are calculated based on the carbon emissions data of the substation construction and the carbon emissions data of the substation equipment installation.

[0063] From the above description, it can be seen that by calculating the carbon emissions during the construction phase based on the carbon emission data of the substation building construction and the carbon emission data of the substation equipment installation, it is possible to comprehensively calculate the carbon emissions of the building construction and the carbon emissions of the equipment installation, thereby obtaining an accurate carbon emission amount during the construction phase.

[0064] Another embodiment of the present invention provides a device for determining the carbon emission baseline for substation construction, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the processor implements the various steps in the above-mentioned method for determining the carbon emission baseline for substation construction.

[0065] The method and device for determining the carbon emission baseline for substation construction provided by the present invention can be applied to the quantitative evaluation of the low-carbon substation construction phase, and can guide the practice of green and low-carbon development of substations. The following is an explanation of the specific implementation methods:

[0066] Example 1

[0067] Please refer to Figure 1 A method for determining a carbon emission baseline for substation construction includes:

[0068] 1.1. Carbon emission calculation model during substation construction phase:

[0069] S1. Obtain the construction data of all substations, and calculate the carbon emissions of all substations during the construction phase based on the construction data. The carbon emissions during the substation construction phase mainly include the carbon emissions generated by construction site transportation, earthwork, foundation engineering, masonry engineering, concrete engineering and other sub-projects (for detailed classification, see Volume 1 (Volumes 1 and 2) of the "Electric Power Construction Project Budget Quota (2018)") and the carbon emissions generated during the implementation of various measures and projects. At the same time, the time boundary for calculating the carbon emissions during the substation construction phase is defined as from the start of the project to the completion and acceptance of the project. The construction data specifically includes the carbon emissions data of the substation construction and the carbon emissions data of the substation equipment installation. The carbon emissions during the construction phase are calculated based on the carbon emissions data of the substation construction and the carbon emissions data of the substation equipment installation, that is:

[0070] C=C jz +C az ;

[0071] Where C is the carbon emission during the substation construction phase; C jz is the carbon emission from substation construction; C az It is the carbon emissions from the installation of substation equipment.

[0072] 1.2. Determination of Carbon Emissions Baseline for Substation Construction: The baseline represents the leading level in the industry and is essentially a reference benchmark. Research and determination of the baseline value for carbon dioxide emissions from substation construction must meet the principles of advancement, guidance, and scientificity. Advancement requires that the baseline value should reach internationally advanced or the highest domestic level; guidance requires that the baseline value provide effective and feasible guidance for the allocation of unit emission quotas within the industry; and scientificity requires that the baseline value be derived from a comprehensive analysis of multiple perspectives and aspects.

[0073] Please refer to Figure 2 The carbon emission baseline for substation construction is determined specifically including:

[0074] 1.2.1. Calculating the carbon emission intensity of each substation, including step S2, obtaining a carbon intensity reference value for all substations, and calculating the carbon emission intensity of all substations based on the carbon intensity reference value and the carbon emissions during the construction phase;

[0075] The carbon emissions during the substation construction phase are calculated based on the above-mentioned carbon emission calculation model. On this basis, the carbon intensity is calculated from two dimensions, namely, the value and physical quantity, taking into full consideration the characteristics of substation construction. That is, the carbon intensity reference of the substation includes the substation construction investment amount (value) and the substation main transformer capacity (physical quantity). If the carbon emission intensity is obtained based on the ratio of the carbon emissions during the construction phase to the substation construction investment amount, the specific calculation formula is:

[0076] CI I =C / I;

[0077] If the carbon emission intensity is calculated based on the ratio of the carbon emissions during the construction phase to the capacity of the substation main transformer, the specific calculation formula is:

[0078] CI A =C / A;

[0079] Where, CI I is the carbon emission intensity calculated from the perspective of value, CI A is the carbon emission intensity calculated from the perspective of physical quantity, C is the carbon emissions during the construction phase, I is the investment in substation construction, and A is the capacity of the substation main transformer.

[0080] 1.2.2. Ranking the carbon emission intensity of each substation, including step S3, sorting all the substations according to the carbon emission intensity to obtain the intensity ranking; as in an optional embodiment, sorting all the substations from low to high according to the carbon emission intensity to obtain the intensity ranking; all the substations can also be sorted from high to low; for example, if there are 16 substations, the 16 substations are sorted from low to high according to the carbon emission intensity corresponding to them.

[0081] 1.2.3. Carbon emission baseline scenario setting, including steps S4-S5;

[0082] S4. Obtain the number of samples, and sequentially obtain the target substations with the lowest carbon emission intensity in the intensity ranking until the target substations equivalent to the number of samples are obtained; wherein the number of samples is obtained based on a preset percentage; for example, if the preset percentage is 10% or 20%, the top 10% of the substations with lower carbon intensity among the 16 substations are taken as the data basis for calculating the baseline. If the ranking is from low to high, the top 2 or 3 substations in the intensity ranking are obtained as the target substations; if the ranking is from high to low, 2 or 3 substations are taken in reverse order as the target substations.

[0083] S5. A baseline value is obtained by weighted calculation based on the carbon intensity reference values ​​and carbon emission intensities corresponding to all target substations. As shown in Table 1, the corresponding data for 16 substations are calculated based on the investment amount for substation construction.

[0084] Table 1. Substation data

[0085]

[0086]

[0087] The weighted calculation method includes: obtaining a total carbon intensity reference value based on the carbon intensity reference values ​​corresponding to all the target substations, obtaining a weighted value based on the ratio of the carbon intensity reference value corresponding to the target substation to the total carbon intensity reference value, and obtaining the baseline value based on the cumulative calculation of the weighted value corresponding to each target substation and the carbon emission intensity;

[0088] For example, taking the top 10% of substations, the carbon intensity of the first two substations is 791.32 kg / 10,000 yuan and 822.21 kg / 10,000 yuan respectively; the weighted average carbon intensity calculated by investment weighting is 4322 / (4322+4509)*791.32+4509 / (4322+4509)*822.21=807.09 kg / 10,000 yuan; that is, the baseline value corresponding to the percentage of 10% is 807.09 kg / 10,000 yuan.

[0089] 1.2.4. Calculation of substation carbon quotas, including step S6, calculating the carbon quota profit or loss of all substations based on the baseline value, and obtaining the total carbon quota profit or loss. The specific calculation formula is as follows:

[0090] N i =∑ j N i,j =∑ j (Bi ×P ij -E j );

[0091] Among them, N i N represents the total carbon quota profit or loss of all substations based on the carbon intensity reference i. i,j represents the carbon quota profit or loss of the j-th substation based on the carbon intensity reference i; B i Indicates the baseline value based on the carbon intensity reference value i (unit: tCO2 / 10,000 yuan; tCO2 / KVA); P j represents the value of the carbon intensity reference i of the j-th substation (unit: KVA); E j represents the carbon emissions during the construction phase of the j-th substation (in tons);

[0092] For example, if the result calculated in step S5: B = 807.09 kg / 10,000 yuan is substituted into the above formula, the quota profits and losses corresponding to the 16 substations are obtained, as shown in Table 1; the quota profits and losses corresponding to the 16 substations are accumulated to obtain the total carbon quota profit and loss: -72798333.9 kg.

[0093] 1.2.5. Determination of the carbon emission baseline. In the initial stage of incorporating carbon emissions from substation construction into carbon market transactions, the selection of the baseline value needs to consider the following two factors: First, the total profit and loss at the industry level must be negative; this reflects that there is room for improvement in the overall production efficiency of substations. From the overall industry perspective, the total profit and loss must be negative to avoid over-issuance of carbon quotas. Second, the number of enterprises with quota surpluses and quota shortages should be roughly equal. In the initial stage of market operation, it is necessary to ensure the acceptance and enthusiasm of market players to participate in transactions in order to ensure the smooth promotion of carbon trading. After the transaction becomes normalized, the difficulty of emission reduction can be gradually increased. Specifically:

[0094] The method includes step S7, determining whether the total carbon quota profit or loss falls within a preset profit or loss range. If so, outputting the baseline value; if not, increasing the number of samples until the total carbon quota profit or loss corresponding to the baseline value falls within the preset profit or loss range. The specific analysis process is as follows:

[0095] The quota profit and loss can be analyzed from two levels: a single substation and the overall substation industry. i,j >0 means quota surplus, at which point the substation can sell carbon quotas on the market; N i,j <0 means a shortage of quotas, and the substation needs to purchase carbon quotas from the market; for the substation industry as a whole, N i >0 means that the total amount of substation quota surplus is greater than the total amount of quota shortage, otherwise it means that the total amount of substation quota surplus is less than the total amount of quota shortage;

[0096] S71. Obtain the number of profitable substations and the number of loss-making substations according to the carbon quota profits and losses of all the substations; that is, the number of profitable substations is 1, and the number of loss-making substations is 15;

[0097] S72. Determine whether the difference between the number of profitable substations and the number of loss-making substations is less than a preset difference range, and whether the total carbon quota profit or loss is a negative value. If both are true, output the baseline value. For example, if the preset difference range is 1-4, that is, the difference between the number of profitable substations and the number of loss-making substations is 1-4. According to the above calculation, the total carbon quota profit or loss is -72798333.9 kg, which meets the requirement that the total profit or loss must be a negative value. However, the number of profitable substations is 1 and the number of loss-making substations is 15, which does not meet the requirement that the number of enterprises with quota surpluses and quota shortages should be roughly equal. It can be seen that this scenario is a strict scenario, which puts too much pressure on enterprises and is not suitable for adoption.

[0098] Therefore, it is necessary to increase the preset percentage and recalculate the updated sampling quantity; for example, after increasing the preset percentage to 20%, re-execute steps S4-S7, that is, obtain the corresponding baseline values, carbon quota profits and losses, and total carbon quota profits and losses of the carbon intensity calculations of the first three substations until the above conditions are met.

[0099] Example 2

[0100] This embodiment differs from the first embodiment in that the carbon emission calculation model for the substation construction phase is specifically defined, including:

[0101] 1.1.1 Carbon emissions during construction phase:

[0102] The carbon emissions during the construction phase include mechanical carbon emissions, material carbon emissions, and labor carbon emissions. Specifically:

[0103] C jz =C jjx +C jcl +C jrg ;

[0104]

[0105]

[0106]

[0107]

[0108]

[0109] C jrg,i =R ji EFr ;

[0110] R ji =R ji,p +R ji,j ;

[0111] Where C jjx Represents the total carbon emissions generated by energy consumption using construction machinery; C jjx，i represents the carbon emissions generated by the energy consumption of construction machinery per unit of construction work during the i-th project construction phase; Q i represents the construction volume of the i-th project during the construction phase; T i，j It represents the consumption of the jth type of construction machinery per unit of work in the i-th project during the construction phase; It represents the energy consumption per unit shift of the jth type of construction machinery in the i-th project during the construction phase; represents the carbon emission factor of the energy used by the jth type of construction machinery in the i-th project;

[0112] C jcl Represents the total carbon emissions generated by energy consumption using construction materials; C jcl,i It represents the carbon emissions generated by the energy consumption of construction materials per unit of construction work in the i-th project during the construction phase; It represents the amount of material j in the i-th project during the construction phase; Indicates the carbon emission factor corresponding to the jth material of the i-th project;

[0113] C jrg Indicates the total carbon emissions generated by artificial energy consumption; C jrg,i R represents the carbon emissions generated by the labor energy consumption per unit of construction work in the i-th project during the construction phase; ji R represents the man-hours invested in the i-th project during the construction phase; ji,p R represents the working hours of ordinary construction workers in the i-th project during the construction phase; ji,j represents the working hours of construction workers in the i-th project during the construction phase; EF r represents the artificial carbon emission factor;

[0114] 1.1.2 Carbon emissions from substation equipment installation:

[0115] The carbon emissions during the installation phase include mechanical carbon emissions, material carbon emissions, and labor carbon emissions involved in the installation process. Specifically:

[0116] C az =C ajx +C acl +C arg ;

[0117]

[0118]

[0119]

[0120]

[0121]

[0122] C arg,i =R ai EF r ;

[0123] R ai =R ai,p +R ai,j ;

[0124] Where C ajx Represents the total carbon emissions generated by energy consumption using construction machinery; C ajx,i represents the carbon emissions generated by the energy consumption of construction machinery per unit of construction work in the i-th project during the installation phase; Q i represents the engineering quantity of the i-th project in the installation phase; T ai,j It represents the consumption of the jth type of construction machinery per unit of work in the i-th project during the installation phase; represents the energy consumption per unit shift of the jth type of construction machinery in the i-th project during the installation phase; represents the carbon emission factor of the energy used by the jth type of construction machinery in the i-th project;

[0125] C acl Represents the total carbon emissions generated by energy consumption using construction materials; C acl,i represents the carbon emissions generated by the energy consumption of construction materials per unit of construction work in the i-th project during the installation phase; represents the amount of material j in item i during the installation phase; Indicates the carbon emission factor corresponding to the jth material of the i-th project;

[0126] C arg Indicates the total carbon emissions generated by artificial energy consumption; C arg,i R represents the carbon emissions generated by the labor energy consumption per unit of construction work in the i-th project during the construction phase; ai R represents the man-hours invested in the i-th project during the construction phase; ai,p R represents the working hours of ordinary construction workers in the i-th project during the construction phase; ai,j represents the working hours of construction workers in the i-th project during the construction phase; EF rrepresents the artificial carbon emission factor.

[0127] Example 3

[0128] Please refer to Figure 3 This embodiment provides a device for determining a carbon emission baseline for substation construction, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, each step of a method for determining a carbon emission baseline for substation construction as described in Embodiments 1 and 2 is implemented.

[0129] In summary, the present invention provides a method and device for determining the carbon emission baseline for substation construction. After obtaining the construction data of all substations and calculating the carbon emissions of all substations during the construction phase, the intensity reference corresponding to each substation and the carbon emissions during the construction phase are obtained to calculate the carbon emission intensity and sort them. Based on the intensity sorting, a valid number of target substations with the lowest carbon emission intensity are obtained to calculate the baseline value. The carbon quota profit and loss of all substations are calculated based on the baseline value and it is determined whether the preset profit and loss range is met. Only when the preset profit and loss range is met, the corresponding baseline value is output. That is, the corresponding carbon emission baseline can be determined based on the construction status of the substation, realizing quantitative evaluation of the low-carbon substation construction phase. This enriches the research on carbon emission baselines, fills the gap in the determination of carbon emission baselines for substation construction, and can effectively promote the low-carbon development of the regional power substation industry.

[0130] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for determining a carbon emission baseline for substation construction, characterized in that: include: Obtaining construction data of all substations, and calculating the carbon emissions of all substations during the construction phase based on the construction data; Obtaining a carbon intensity reference value for all the substations, and calculating the carbon emission intensity of all the substations based on the carbon intensity reference value and the carbon emissions during the construction phase; Sort all the substations according to the carbon emission intensity to obtain an intensity ranking; Obtaining a sampling quantity, and sequentially obtaining the target substations with the lowest carbon emission intensity in the intensity ranking, until obtaining the target substations equivalent to the sampling quantity; A baseline value is obtained by weighted calculation based on the carbon intensity reference amount and carbon emission intensity corresponding to all the target substations; Calculating the carbon quota profit and loss of all the substations according to the baseline value, and obtaining the total carbon quota profit and loss; Determine whether the total carbon quota profit or loss falls within a preset profit or loss range, and if so, output the baseline value; if not, increase the number of samples until the total carbon quota profit or loss corresponding to the baseline value falls within the preset profit or loss range; The carbon intensity reference of the substation also includes the capacity of the substation main transformer; The carbon emission intensity of the substation is calculated based on the carbon intensity reference and the carbon emissions during the construction phase, including: Obtaining the carbon emission intensity according to the ratio of the carbon emissions during the construction phase to the capacity of the main transformer of the substation; The baseline value obtained by weighted calculation based on the carbon intensity reference amount and carbon emission intensity corresponding to all the target substations includes: Obtaining a total carbon intensity reference value based on the carbon intensity reference values ​​corresponding to all the target substations; Obtaining a weighted amount according to a ratio of a carbon intensity reference amount corresponding to the target substation to the total carbon intensity reference amount; The baseline value is obtained by cumulatively calculating the weighted amount corresponding to each target substation and the carbon emission intensity.

2. The method for determining a carbon emission baseline for substation construction according to claim 1, characterized in that: The carbon intensity reference of the substation includes the investment in substation construction; The carbon emission intensity of the substation is calculated based on the carbon intensity reference and the carbon emissions during the construction phase, including: The carbon emission intensity is obtained according to the ratio of the carbon emission during the construction phase to the investment amount of the substation construction.

3. The method for determining a carbon emission baseline for substation construction according to claim 1, wherein: Calculating the carbon quota profit or loss of all the substations according to the baseline value includes: ； in, represents the total carbon quota profit or loss of all substations based on the carbon intensity reference value i, represents the carbon quota profit or loss of the j-th substation based on the carbon intensity reference i; represents the baseline value based on the carbon intensity reference i; represents the value of the carbon intensity reference i of the j-th substation; represents the carbon emissions during the construction phase of the j-th substation.

4. The method for determining a carbon emission baseline for substation construction according to claim 1, characterized in that: The determination of whether the total carbon quota profit or loss falls within a preset profit or loss range includes: According to the carbon quota profit and loss of all the substations, the number of profitable substations and the number of loss-making substations are obtained; It is determined whether the difference between the number of profitable substations and the number of loss-making substations is less than a preset difference range, and whether the total carbon quota profit or loss is a negative value. If both are true, the baseline value is output.

5. The method for determining a carbon emission baseline for substation construction according to claim 1, characterized in that: Sorting all the substations according to the carbon emission intensity to obtain an intensity ranking includes: All the substations are sorted from low to high according to the carbon emission intensity to obtain the intensity ranking.

6. The method for determining a carbon emission baseline for substation construction according to claim 1, characterized in that: The obtaining of the number of samples comprises: Get the preset percentage; Obtaining the sampling quantity according to the preset percentage and the quantity of all the substations; Increasing the number of samples includes: The preset percentage is increased and the updated sampling quantity is recalculated.

7. The method for determining a carbon emission baseline for substation construction according to claim 1, characterized in that: The construction data includes carbon emission data of substation construction and carbon emission data of substation equipment installation; The carbon emissions during the construction phase of all the substations calculated based on the construction data include: The carbon emissions during the construction phase are calculated based on the carbon emissions data of the substation construction and the carbon emissions data of the substation equipment installation.

8. A device for determining a carbon emission baseline for substation construction, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, each step of the method for determining a carbon emission baseline for substation construction according to any one of claims 1 to 7 is implemented.

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