A method and device for allocating carbon emission responsibility of NCFI considering fairness

Abstract

This invention discloses a method, apparatus, electronic device, and readable storage medium for NCFI carbon emission responsibility allocation that considers fairness. The allocation apparatus includes a power flow distribution acquisition module, an original allocation result acquisition module, an allocation fairness interval acquisition module, an original satisfaction acquisition module, and a satisfaction optimization and adjustment module. The satisfaction optimization and adjustment module includes an original satisfaction calculation module, a first satisfaction optimization and adjustment module, and a second satisfaction optimization and adjustment module. This invention, on the one hand, can better link the historical emission responsibility of load nodes, individual development opportunities, and node carbon emission responsibility, considering fairness without changing the total responsibility allocation, thus avoiding the phenomenon of unfair allocation schemes; on the other hand, it reduces the responsibility allocation of most load nodes based on reasonable and feasible allocation results, providing effective data support for the formulation of corporate carbon reduction strategies, and is of great significance to coordinated economic development.

Description

Technical Field

[0001] This invention belongs to the field of carbon emission reduction in power systems, and specifically relates to an NCFI carbon emission responsibility sharing method and device that takes fairness into account. Technical Background

[0002] In recent years, an increasing number of scholars worldwide have devoted themselves to carbon-related fields, giving rise to several low-carbon development keywords and related research areas, such as carbon quotas, carbon sharing, carbon trading, and carbon markets, which have developed rapidly. As a crucial energy sector in my country, the power industry has consistently maintained high carbon emissions. To ensure the successful achievement of carbon reduction targets in the power system, the allocation of carbon emission responsibility is particularly important, thus giving rise to the key term "carbon emission responsibility sharing."

[0003] Carbon emission responsibility allocation refers to the process of calculating the carbon emission intensity of each node based on the carbon flow theory, through statistical analysis of carbon emissions from the power generation, grid, and load sides of the power system; and finally, using an appropriate allocation method to divide the emission responsibilities that each node should bear. Greenhouse gas emissions are the main cause of global warming. A reasonable allocation of carbon emission responsibility is a crucial foundation for achieving the aforementioned goals. As a major consumer of fossil energy and a major emitter of carbon, the power industry's reasonable allocation of carbon emission responsibility helps accurately identify key emission reduction areas, promotes improvements in power production and transmission dispatch capabilities on both the production and transportation sides, enhances consumers' awareness of conservation and rational electricity use, and is of great significance for promoting carbon emission reduction cooperation and coordinated economic development among different regions.

[0004] Traditional methods, including macro-statistical approaches and life-cycle methods, neglect the network structure and transmission characteristics of the power system. This leads to allocation results that only consider the emission responsibility of the generation side, ignoring the responsibility to be shared by the network and load sides. This fails to achieve a fair distribution of carbon emission responsibility and increases the difficulty of implementing energy conservation and emission reduction policies. Therefore, in analyzing and calculating the carbon emission responsibility of the system, focusing on the power load side and combining the historical emission responsibility of load nodes with the influencing factors of individual development opportunities, can accurately identify the carbon emission change trends of load nodes. This can effectively improve the fairness of the responsibility allocation scheme, meet the needs of industry development, and contribute to the development of a low-carbon level in the industry. Summary of the Invention

[0005] The purpose of this invention is to provide a fair NCFI carbon emission responsibility allocation method and apparatus, where NCFI stands for Node carbon footprint intensity. This invention addresses the problem that traditional NCFI carbon emission responsibility allocation methods do not consider the fairness of the allocation scheme. It innovatively combines the node's historical emission responsibility and future individual development opportunities with the current allocation result, effectively avoiding the lack of fairness caused by ignoring the time factor in previous carbon emission responsibility allocations, as well as the responsibility transfer and opaque intermediate process caused by only considering the allocation on the power generation side. It fully leverages the characteristics of the power system's lossy network, significantly improves the fairness of the allocation scheme, and provides decision-makers with sufficient decision-making space.

[0006] To achieve this objective, the present invention provides a fair NCFI carbon emission responsibility allocation method, comprising the following steps:

[0007] A power system power flow calculation is performed using a power distribution network simulation platform to quantitatively assess the power flow distribution of the system and obtain the power flow distribution data.

[0008] Based on the power flow distribution, a system carbon flow relationship calculation model is established. Based on the system carbon flow relationship obtained from the calculation model, a system node carbon trace intensity calculation model is constructed, and the original carbon emission responsibility allocation results of each load node are calculated.

[0009] Carbon emission responsibility allocation results for each load node are constructed based on the principles of historical responsibility and individual equal development, and the upper and lower limits of the fairness range of carbon emission responsibility allocation for the corresponding node are determined based on the carbon emission responsibility allocation results.

[0010] Based on the upper and lower limits of the fairness interval of carbon emission responsibility sharing for the corresponding nodes and the original carbon emission responsibility sharing results for each load node, a scheme fairness calculation model for each load node is constructed, and the corresponding original satisfaction and satisfaction standard deviation are obtained.

[0011] Based on the fairness calculation model of the proposed scheme and the principle that the total amount of the original carbon emission responsibility allocation results remains unchanged, the original satisfaction and the standard deviation of the satisfaction are adjusted for satisfaction optimization.

[0012] Furthermore, the steps for obtaining the power flow distribution are as follows:

[0013] Step A1: Analyze the given system topology network diagram;

[0014] Step A2: Based on the system topology network diagram, collect the basic parameters required for power flow calculation of the system;

[0015] Step A3: Based on the collected basic parameters, perform power system modeling and simulation calculations on the simulation platform;

[0016] Step A4: Determine the power flow distribution of the system based on the power flow results calculated by the simulation platform.

[0017] Furthermore, the steps for obtaining the original carbon emission responsibility allocation results are as follows:

[0018] Step B1: Based on the described tidal current distribution, establish a calculation model for the system's carbon flow relationship:

[0019] (1a)

[0020] (1b)

[0021] in, The total carbon flow vector through the node; To consider the reverse distribution matrix of network loss in the system, C fG P represents the column vector for carbon flow injection at each power generation node, where the corresponding element for non-power generation nodes is 0; mn P represents the active power at the beginning of branch mn flowing from node n; n Let be the power flowing through node n; Let m be the set of incoming lines to node m;

[0022] Step B2: Based on the system carbon flow relationship calculated above, a system node carbon trace intensity calculation model is constructed, and the original carbon emission responsibility allocation results for each load node are calculated:

[0023] (1c)

[0024] (1d)

[0025] Where: F is the vector of carbon trace intensity of the system; P n x is the sum of the power flowing into or out of the node; i P represents the initial carbon emission responsibility allocation for load node i. Di F represents the active power consumption of load node i; f(i) is the carbon trace intensity value of the node where load node i is located.

[0026] Furthermore, the steps for obtaining the upper and lower limits of the carbon emission responsibility sharing fairness range are as follows:

[0027] Step C1: From the perspective of historical responsibility, calculate the carbon emission responsibility allocation for node i under the principle of historical responsibility:

[0028] (2a)

[0029] Where: C ih Under the principle of historical responsibility, C represents the carbon emission responsibility allocation for node i. it This refers to the total carbon emission responsibility to be allocated to each load node under the principle of historical responsibility; HC ie The historical carbon emissions of load node i under the principle of historical responsibility; The total number of load nodes participating in the sharing under the principle of historical responsibility;

[0030] Step C2: From the perspective of equal development for individuals, calculate the carbon emission responsibility allocation for node i under the principle of individual equality:

[0031] (2b)

[0032] Where: C ip The carbon emission responsibility allocated to load node i under the principle of equal development for individuals; P i Under the principle of equal development for individuals, calculate the demand forecast value of load node i within the calculation period; C iw The total amount of carbon emission responsibility to be allocated in the future, under the principle of equal development for individuals; The total number of load nodes participating in load sharing under the principle of equal development for individuals;

[0033] Step C3: Determine the upper and lower limits of the fairness interval for carbon emission responsibility sharing at load node i:

[0034] (2c)

[0035] (2d)

[0036] Where: C iu The upper limit for allocating carbon emission responsibility to load node i; C id This represents the lower limit for allocating carbon emission responsibility to load node i.

[0037] Furthermore, the functional expression of the fairness calculation model for the proposed scheme is as follows:

[0038] (3a)

[0039] (3b)

[0040] in: The satisfaction level of load node i; C i The carbon emission responsibility allocation for load node i; denoted as the standard deviation of satisfaction; N represents the number of load nodes.

[0041] Furthermore, the steps for optimizing and adjusting the satisfaction level are as follows:

[0042] Step E1: Calculate the original satisfaction and standard deviation of the original satisfaction of each load node based on the NCFI carbon emission responsibility sharing method using the function of the scheme fairness calculation model, and sort the original satisfaction of each load node in ascending order;

[0043] Step E2: Select the member with the lowest original satisfaction, analyze the reasons and readjust their satisfaction to 0.5. Then, according to the function of the scheme fairness calculation model, obtain the member's allocation after one adjustment. Then, readjust the satisfaction of each of the remaining load nodes to 0.5 in ascending order and obtain the allocation of each load node.

[0044] Step E3: Based on the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged, the member with the highest original satisfaction ranking calculates its corresponding carbon emission responsibility allocation result, then recalculates its satisfaction after one adjustment, and obtains the standard deviation of the satisfaction of each load node after one adjustment.

[0045] The present invention also provides an NCFI carbon emission responsibility sharing device that takes fairness into account, comprising:

[0046] The power flow distribution acquisition module is used to perform power system power flow calculations based on the distribution network simulation platform, quantitatively evaluate the power flow distribution of the system, and acquire the power flow distribution information.

[0047] The original allocation result acquisition module is used to establish a system carbon flow relationship calculation model based on the power flow distribution, and based on the system carbon flow relationship obtained by the calculation model, construct a system node carbon trace intensity calculation model, and calculate the original carbon emission responsibility allocation result of each load node.

[0048] The carbon emission responsibility allocation fairness interval acquisition module is used to construct the carbon emission responsibility allocation amount for each load node based on the historical responsibility principle and the individual equal development principle, and to determine the upper and lower limits of the carbon emission responsibility allocation fairness interval for the corresponding node based on the carbon emission responsibility allocation results.

[0049] The original satisfaction acquisition module is used to construct a scheme fairness calculation model for each load node based on the upper and lower limits of the fairness interval of carbon emission responsibility allocation for the corresponding node and the original carbon emission responsibility allocation results for each load node, and obtain the corresponding original satisfaction and satisfaction standard deviation.

[0050] The satisfaction optimization and adjustment module optimizes and adjusts the original satisfaction level and the standard deviation of satisfaction level based on the fairness calculation model of the scheme and the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged.

[0051] Furthermore, the satisfaction optimization and adjustment module includes:

[0052] The original satisfaction calculation module is used to calculate the original satisfaction and original satisfaction standard deviation of each load node based on the NCFI carbon emission responsibility allocation method through the function of the scheme fairness calculation model, and sort the original satisfaction of each load node in ascending order.

[0053] The first satisfaction optimization and adjustment module is used to select the member with the lowest original satisfaction, analyze the reasons and readjust their satisfaction to 0.5, and then obtain the member's allocation after one adjustment according to the function of the scheme fairness calculation model. Then, the remaining load nodes are readjusted to 0.5 in order from smallest to largest, and the allocation of each load node is obtained.

[0054] The second satisfaction optimization and adjustment module is used to calculate the carbon emission responsibility allocation result of the member with the highest original satisfaction ranking based on the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged, and then re-adjust the satisfaction of the member after one adjustment, and obtain the standard deviation of the satisfaction of each load node after one adjustment.

[0055] The present invention also provides an electronic device, comprising: one or more processors; a memory for storing one or more programs; wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the NCFI carbon emission responsibility sharing method that takes fairness into account.

[0056] The present invention also provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the aforementioned NCFI carbon emission responsibility sharing method that takes fairness into account.

[0057] The beneficial effects of this invention are:

[0058] 1. This invention can better link the principle of historical responsibility of load nodes and the principle of equal development of individuals with the carbon emission responsibility after considering the carbon footprint intensity (NCFI) of nodes, and then make further adjustments using a fairness calculation model. Without changing the total responsibility allocation, fairness is considered, and the phenomenon of lack of fairness in the allocation scheme is avoided.

[0059] 2. Based on the reasonable and feasible allocation results, this invention reduces the responsibility allocation of most load members. Compared with the two allocation results based on the load capacity ratio allocation method, the overall fairness is improved, providing effective data support for enterprises to formulate carbon reduction strategies. It is of great significance for promoting carbon emission reduction cooperation and coordinated economic development among different regions. Attached Figure Description

[0060] Figure 1This is a schematic diagram of the system structure of the present invention;

[0061] Figure 2 This is a schematic diagram of the specific topology network structure and power flow calculation results in an embodiment of the present invention. Detailed Implementation

[0062] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0063] The present invention presents a fair NCFI carbon emission responsibility allocation method, such as... Figure 1 As shown, the apportionment method includes the following steps:

[0064] Step A: Use a power distribution network simulation platform to perform power system flow calculations, quantitatively evaluate the power flow distribution of the system, and obtain the power flow distribution. In this embodiment, the power distribution network simulation platform is OpenDSS.

[0065] Step B: Based on the power flow distribution, establish a system carbon flow relationship calculation model. Based on the system carbon flow relationship obtained from the calculation model, construct a system node carbon trace intensity calculation model and calculate the original carbon emission responsibility allocation results for each load node.

[0066] Step C: Obtain the upper and lower limits of the fairness range for carbon emission responsibility sharing: Introduce the concept of "fairness range" applicable to the power system, construct the carbon emission responsibility sharing results for each load node based on the principle of historical responsibility and the principle of equal development for individuals, and determine the upper and lower limits of the fairness range for carbon emission responsibility sharing of the corresponding node based on the carbon emission responsibility sharing results;

[0067] Step D: Based on the upper and lower limits of the fairness interval of carbon emission responsibility sharing for the corresponding nodes and the original carbon emission responsibility sharing results for each load node, construct a scheme fairness calculation model for each load node and obtain the corresponding original satisfaction and satisfaction standard deviation.

[0068] Step E: Based on the fairness calculation model of the scheme and the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged, the original satisfaction and the standard deviation of satisfaction are adjusted for satisfaction optimization.

[0069] In this embodiment, the steps for obtaining the power flow distribution are as follows:

[0070] Step A1: Analyze the given system topology network diagram;

[0071] Step A2: Based on the system topology network diagram, collect the basic parameters required for power flow calculation of the system;

[0072] Step A3: Based on the collected basic parameters, perform power system modeling and simulation calculations on the OpenDSS simulation platform. The parameters include the per-unit value of the balance node voltage, the reference voltage, active power, reactive power, PV node voltage and power, transformer winding and line impedance, etc.

[0073] Step A4: Determine the power flow distribution of the system based on the power flow results calculated by the OpenDSS simulation platform.

[0074] In this embodiment, the steps for obtaining the original carbon emission responsibility allocation result are as follows:

[0075] Step B1: Based on the described tidal current distribution, establish a calculation model for the system's carbon flow relationship:

[0076] (1a)

[0077] (1b)

[0078] in, The total carbon flow vector through the node; To consider the reverse distribution matrix of network loss in the system, C fG P represents the column vector for carbon flow injection at each power generation node, where the corresponding element for non-power generation nodes is 0; mn P represents the active power at the beginning of branch mn flowing from node n; n Let be the power flowing through node n; Let m be the set of incoming lines to node m;

[0079] Step B2: Based on the system carbon flow relationship calculated above, a system node carbon trace intensity calculation model is constructed, and the original carbon emission responsibility allocation results for each load node are calculated:

[0080] (1c)

[0081] (1d)

[0082] Where: F is the vector of carbon trace intensity of the system; P n x is the sum of the power flowing into or out of the node; i P represents the initial carbon emission responsibility allocation for load node i. Di F represents the active power consumption of load node i; f(i) is the carbon trace intensity value of the node where load node i is located.

[0083] In this embodiment, the steps for obtaining the upper and lower limits of the carbon emission responsibility sharing fairness range are as follows:

[0084] Step C1: From the perspective of historical responsibility, calculate the carbon emission responsibility allocation for node i under the principle of historical responsibility:

[0085] (2a)

[0086] Where: C ih Under the principle of historical responsibility, C represents the carbon emission responsibility allocation for node i. it This refers to the total carbon emission responsibility to be allocated to each load node under the principle of historical responsibility; HC ie The historical carbon emissions of load node i under the principle of historical responsibility; The total number of load nodes participating in the sharing under the principle of historical responsibility;

[0087] Step C2: From the perspective of equal development for individuals, calculate the carbon emission responsibility allocation for node i under the principle of individual equality:

[0088] (2b)

[0089] Where: C ip The carbon emission responsibility allocated to load node i under the principle of equal development for individuals; P i Under the principle of equal development for individuals, the demand forecast value of load node i within the calculation period is used. In this embodiment, the data in the table below are all based on a five-year period; C iw The total amount of carbon emission responsibility to be allocated in the future, under the principle of equal development for individuals; The total number of load nodes participating in load sharing under the principle of equal development for individuals;

[0090] Step C3: Determine the upper and lower limits of the fairness interval for carbon emission responsibility sharing at load node i:

[0091] (2c)

[0092] (2d)

[0093] Where: C iu The upper limit for allocating carbon emission responsibility to load node i; C id This represents the lower limit for allocating carbon emission responsibility to load node i.

[0094] Furthermore, the functional expression of the fairness calculation model for the proposed scheme is as follows:

[0095] (3a)

[0096] (3b)

[0097] in: The satisfaction level of load node i; Ci The carbon emission responsibility allocation for load node i; denoted as the standard deviation of satisfaction; N represents the number of load nodes. The allocation methods described in this embodiment are all applicable to the above satisfaction calculation formula.

[0098] Furthermore, the steps for optimizing and adjusting the satisfaction level are as follows:

[0099] Step E1: Calculate the original satisfaction and standard deviation of the original satisfaction of each load node based on the NCFI carbon emission responsibility sharing method using the function of the scheme fairness calculation model, and sort the original satisfaction of each load node in ascending order;

[0100] Step E2: Select the member with the lowest original satisfaction, analyze the reasons and readjust their satisfaction to 0.5. Then, according to the function of the scheme fairness calculation model, obtain the member's allocation after one adjustment. Then, readjust the satisfaction of each of the remaining load nodes to 0.5 in ascending order and obtain the allocation of each load node.

[0101] Step E3: Based on the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged, the member with the highest original satisfaction ranking calculates its corresponding carbon emission responsibility allocation result, then recalculates its satisfaction after one adjustment, and obtains the standard deviation of the satisfaction of each load node after one adjustment.

[0102] This invention can better link the principles of historical responsibility of load nodes and equal development of individuals with carbon emission responsibility after considering the carbon footprint intensity (NCFI) of nodes. It can then make further adjustments using a fairness calculation model, taking fairness into account without changing the total responsibility allocation, thus avoiding the phenomenon of fairness deficiency in the allocation scheme.

[0103] The present invention also provides an improved NCFI allocation device that considers the fairness of the load-side carbon emission responsibility allocation scheme, which includes a power flow distribution acquisition module, an original allocation result acquisition module, an allocation fairness interval acquisition module, an original satisfaction acquisition module, and a satisfaction optimization and adjustment module.

[0104] The power flow distribution acquisition module is used to perform power system power flow calculations based on the distribution network simulation platform, quantitatively evaluate the power flow distribution of the system, and acquire the power flow distribution information.

[0105] The original allocation result acquisition module is used to establish a system carbon flow relationship calculation model based on the power flow distribution, and based on the system carbon flow relationship obtained by the calculation model, construct a system node carbon trace intensity calculation model, and calculate the original carbon emission responsibility allocation result of each load node.

[0106] The carbon emission responsibility allocation fairness interval acquisition module is used to construct the carbon emission responsibility allocation amount for each load node based on the historical responsibility principle and the individual equal development principle, and to determine the upper and lower limits of the carbon emission responsibility allocation fairness interval for the corresponding node based on the carbon emission responsibility allocation results.

[0107] The original satisfaction acquisition module is used to construct a scheme fairness calculation model for each load node based on the upper and lower limits of the fairness interval of carbon emission responsibility allocation for the corresponding node and the original carbon emission responsibility allocation results for each load node, and obtain the corresponding original satisfaction and satisfaction standard deviation.

[0108] The satisfaction optimization and adjustment module optimizes and adjusts the original satisfaction level and the standard deviation of satisfaction level based on the fairness calculation model of the scheme and the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged.

[0109] In this embodiment, the satisfaction optimization and adjustment module includes an original satisfaction calculation module, a first satisfaction optimization and adjustment module, and a second satisfaction optimization and adjustment module.

[0110] The original satisfaction calculation module is used to calculate the original satisfaction and original satisfaction standard deviation of each load node based on the NCFI carbon emission responsibility allocation method through the function of the scheme fairness calculation model, and sort the original satisfaction of each load node in ascending order.

[0111] The first satisfaction optimization and adjustment module is used to select the member with the lowest original satisfaction, analyze the reasons and readjust their satisfaction to 0.5, and then obtain the member's allocation after one adjustment according to the function of the scheme fairness calculation model. Then, the remaining load nodes are readjusted to 0.5 in order from smallest to largest, and the allocation of each load node is obtained.

[0112] The second satisfaction optimization and adjustment module is used to calculate the carbon emission responsibility allocation result of the member with the highest original satisfaction ranking based on the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged, and then re-adjust the satisfaction of the member after one adjustment, and obtain the standard deviation of the satisfaction of each load node after one adjustment.

[0113] The present invention also provides an electronic device, comprising: one or more processors; a memory for storing one or more programs; wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the NCFI carbon emission responsibility sharing method that takes fairness into account.

[0114] The present invention also provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the aforementioned NCFI carbon emission responsibility sharing method that takes fairness into account.

[0115] In this embodiment, the historical emission responsibility and individual development opportunities of a region should be refined to the responsibility and opportunities of power system nodes. During a certain period, if the electricity demand of a load node increases, requiring power plants to provide more electricity to that load node during this period, more carbon emissions will be generated in the power grid, thus affecting the carbon footprint intensity of that node. Therefore, analyzing the carbon footprint intensity of a node solely from the perspective of current total emissions tracking lacks fairness; therefore, it is necessary to provide the historical and future responsibility allocation results for reference.

[0116] Referring to relevant energy conservation and emission reduction policy documents, this embodiment calculates the C in the carbon responsibility allocation proportionally. ih and C ip Two-parameter quantization, Tables 1 and 2 and Figure 2 The relevant parameter information for this example is given, including the upper limit of the allowable power flowing through the ED line. ED The upper limit of the permissible power flowing through the AB line is 240MW. AB The total active power output of generating units 1 through 5 is 400 MW, with upper limits of 40, 170, 520, 200, and 600 MW respectively. The load demands of nodes B, C, and D are 300, 300, and 400 MW respectively. Given the current difficulties in monitoring carbon emissions in most regions, this embodiment uses a method of multiplying the carbon emission coefficient by historical power generation to calculate the historical carbon emission data of the load nodes. Furthermore, under the premise of continuous development of the load nodes, the predicted value of the load's electricity demand is determined.

[0117] Table 1 Summary of Unit Information

[0118]

[0119] Table 2 Summary of Load Information

[0120]

[0121] Based on the information provided above, using the NCFI allocation method and in accordance with the relevant documents, the energy conservation and emission reduction targets for the power industry are 18% and 10%. The carbon emission rates of each power generation node are adjusted proportionally to calculate the original carbon emission responsibility allocation results on the system load side, with a five-year cycle, as shown in Table 3.

[0122] Table 3 Summary of NCFI Method Allocation Results

[0123]

[0124] Based on this, considering fairness, the fairness interval and related indicators for fairness determination of the NCFI allocation method considering fairness are calculated.

[0125] Table 4 Summary of NCFI apportionment results considering fairness

[0126]

[0127] As shown in Table 4, based on the calculation results of the scheme satisfaction, node L3 is the least satisfied with the allocation result; L1 is somewhat dissatisfied with the allocation result; and L2 is the most satisfied. The overall fairness of the result is somewhat unfair, and the difference in satisfaction between L2 and L3 is large, lacking a certain degree of fairness. The higher the satisfaction value, the lower the satisfaction. A deeper analysis of the allocation result reveals that although L1's load demand is the same as L2's (300MW) under the current conditions, based on the original allocation result, its node carbon trace intensity is higher (0.4511), thus increasing its allocated responsibility. However, its historical carbon emissions are lower (60tCO2), and its load demand growth ratio is the smallest (1.3333), so it should be allocated a smaller carbon emission responsibility. Therefore, its satisfaction value is higher, and it is somewhat dissatisfied with the allocation result. L2 has the lowest node carbon trace intensity (0.3312) and the smallest load demand, therefore its carbon emission responsibility allocation is the smallest, and it is satisfied with the allocation result. L3 has the highest historical carbon emissions, the highest load demand (400MW), and the highest demand growth rate (1.6250), resulting in the largest share of responsibility. However, compared to L1 and L2, its responsibility sharing is significantly different, leading to the highest satisfaction score (0.6951) and dissatisfaction with the allocation result. Without changing the total allocation, the allocation for L3, the member with the highest satisfaction score, should be appropriately adjusted to improve its satisfaction. To ensure relative fairness among all members, the allocation for L3 can be reset, while the allocation for L2, the member with the highest (lowest) satisfaction score, remains unchanged. The carbon emission responsibility allocation for L1 can be appropriately adjusted. Finally, based on the adjustments to the allocations for L1 and L3, the allocation for L2 is adjusted to maintain the total allocation unchanged.

[0128] While maintaining the original total allocation unchanged, without adding any other restrictions, the original allocation results are adjusted solely to improve the fairness of the scheme, referring to the principles mentioned above. Considering the case of L3, the carbon emission responsibility allocation for load L3 is adjusted once, appropriately reducing it to the median value of 253.56 in the fairness range. Furthermore, to improve the relative fairness among all load members, the allocation for L1 is appropriately adjusted, reducing it to the median value of 132.56 in the fairness range; the increased allocation for L2 is the sum of the reduced responsibilities of L1 and L3, becoming 133.46. The specific allocation results after this adjustment are shown in Table 5.

[0129] Table 5 Summary of NCFI Approach Allocation Results After One Adjustment Considering Fairness

[0130]

[0131] To verify the rationality and fairness of this adjustment, Table 6 lists the comparison between the prior art and the allocation results based on the load capacity ratio method. The standard deviation of satisfaction based on the current load capacity ratio is 0.5386, and the standard deviation of satisfaction based on the future load capacity ratio is 0.4754.

[0132] Table 6 Summary of Comparison of Four Allocation Results

[0133]

[0134] Analysis of the allocation results after the first adjustment shows that the allocation of the total load remains within its respective fairness range, and the differences in satisfaction between the different schemes have significantly narrowed. 1、 The satisfaction levels of nodes L2 and L3 were 0.5000 and 0.3524, respectively, with the average satisfaction level also decreasing from 0.4829 to 0.4508. The standard deviation of satisfaction decreased from 0.3269 to 0.1205, which is better than the two satisfaction standard deviations based on load capacity in Table 6. Although the satisfaction level of the L2 allocation scheme increased from 0.2365 to 0.3524, the responsibility allocation amounts of L1 and L2 were lower compared to the two allocation results based on load capacity proportion, further improving the overall fairness of the allocation results for all members. The L3 allocation amount exceeded the allocation amount based on future load capacity proportion, but the result after one adjustment was 15.45 lower than the original allocation result. The fairness of the overall allocation scheme changed from "relatively unfair" to "relatively fair," and the relative fairness of the allocation result increased, making this adjustment move towards a fairer direction. Therefore, the adjusted result is within an acceptable range.

[0135] Compared to the allocation results of the NCFI allocation method, this allocation scheme is more reasonable and its fairness is improved. Therefore, the NCFI allocation method, which takes fairness into account, was selected as the final result. This invention reduces the responsibility allocation of most load members based on the reasonable and feasible allocation results. Compared with the two allocation results based on load capacity ratio, the overall fairness is improved, providing effective data support for the formulation of corporate carbon reduction strategies and playing an important role in promoting carbon emission reduction cooperation and coordinated economic development among different regions.

[0136] The above-described invention merely illustrates implementation methods of the present invention and should not be construed as limiting the scope of the invention patent, nor as imposing any form of limitation on the structure of the embodiments of the present invention. It should be noted that those skilled in the art can make various changes and improvements without departing from the concept of the embodiments of the present invention, and these all fall within the protection scope of the embodiments of the present invention.

Claims

1. A fair NCFI carbon emission responsibility allocation method, characterized in that, Includes the following steps: A power system power flow calculation is performed using a distribution network simulation platform to quantitatively evaluate the power flow distribution of the system and obtain the power flow distribution, where NCFI refers to the node carbon footprint intensity. Based on the current distribution, a system carbon flow relationship calculation model is established. Based on the system carbon flow relationship obtained from the calculation model, a system node carbon footprint intensity calculation model is constructed, and the original carbon emission responsibility allocation results of each load node are calculated. Carbon emission responsibility allocation results for each load node are constructed based on the principles of historical responsibility and individual equal development, and the upper and lower limits of the fairness range of carbon emission responsibility allocation for the corresponding node are determined based on the carbon emission responsibility allocation results. Based on the upper and lower limits of the fairness interval of carbon emission responsibility sharing for the corresponding nodes and the original carbon emission responsibility sharing results for each load node, a scheme fairness calculation model for each load node is constructed, and the corresponding original satisfaction and satisfaction standard deviation are obtained. The steps to obtain the upper and lower limits of the carbon emission responsibility sharing fairness range are as follows: Step C1: From the perspective of historical responsibility, calculate the carbon emission responsibility allocation for node i under the principle of historical responsibility: (2a) Where: C ih Under the principle of historical responsibility, C represents the carbon emission responsibility allocation for node i. it This refers to the total carbon emission responsibility to be allocated to each load node under the principle of historical responsibility; HC ie The historical carbon emissions of load node i under the principle of historical responsibility; The total number of load nodes participating in the sharing under the principle of historical responsibility; Step C2: From the perspective of equal development for individuals, calculate the carbon emission responsibility allocation for node i under the principle of equal development for individuals: (2b) Where: C ip The carbon emission responsibility allocated to load node i under the principle of equal development for individuals; P i Under the principle of equal development for individuals, calculate the demand forecast value of load node i within the calculation period; C iw The total amount of carbon emission responsibility to be allocated in the future, under the principle of equal development for individuals; The total number of load nodes participating in load sharing under the principle of equal development for individuals; Step C3: Determine the upper and lower limits of the fairness interval for carbon emission responsibility sharing at load node i: (2c) (2d) Where: C iu C is the upper limit for the carbon emission responsibility allocation of load node i. id This represents the lower limit for allocating carbon emission responsibility to load node i; Based on the fairness calculation model of the proposed scheme and the principle that the total amount of the original carbon emission responsibility allocation results remains unchanged, the original satisfaction and the standard deviation of the satisfaction are adjusted for satisfaction optimization.

2. The NCFI carbon emission responsibility sharing method considering fairness according to claim 1, characterized in that, The steps to obtain the power flow distribution are as follows: Step A1: Analyze the given system topology network diagram; Step A2: Based on the system topology network diagram, collect the basic parameters required for power flow calculation of the system; Step A3: Based on the collected basic parameters, perform power system modeling and simulation calculations on the simulation platform; Step A4: Based on the power flow results calculated by the simulation platform, determine the power flow distribution of the system.

3. The NCFI carbon emission responsibility sharing method considering fairness according to claim 1, characterized in that, The steps to obtain the original carbon emission responsibility allocation results are as follows: Step B1: Based on the described tidal current distribution, establish a calculation model for the system's carbon flow relationship: (1a) (1b) in, The total carbon flow vector through the node; To consider the reverse distribution matrix of network loss in the system, C fG P represents the column vector for carbon flow injection at each power generation node, where the corresponding element for non-power generation nodes is 0; mn P represents the active power at the beginning of branch mn flowing from node n; n Let be the power flowing through node n; Let m be the set of incoming lines to node m; Step B2: Based on the system carbon flow relationship calculated above, a system node carbon footprint intensity calculation model is constructed, and the original carbon emission responsibility allocation results for each load node are calculated: (1c) (1d) Where: F is the vector of carbon trace intensity of the system; P n x is the sum of the power flowing into or out of the node; i P represents the initial carbon emission responsibility allocation for load node i. Di F represents the active power consumption of load node i; f(i) is the carbon trace intensity value of the node where load node i is located.

4. A fair NCFI carbon emission responsibility sharing method according to claim 1, characterized in that, The functional expression of the fairness calculation model for the proposed scheme is as follows: (3a) (3b) in: The satisfaction level of load node i; C i The carbon emission responsibility allocation for load node i; denoted as the standard deviation of satisfaction; N represents the number of load nodes.

5. A fair NCFI carbon emission responsibility sharing method according to claim 4, characterized in that, The steps for optimizing and adjusting satisfaction are as follows: Step E1: Calculate the original satisfaction and standard deviation of the original satisfaction of each load node based on the NCFI carbon emission responsibility sharing method using the function of the scheme fairness calculation model, and sort the original satisfaction of each load node in ascending order; Step E2: Select the member with the lowest original satisfaction, analyze the reasons and readjust their satisfaction to 0.

5. Then, according to the function of the scheme fairness calculation model, obtain the member's allocation after one adjustment. Then, readjust the satisfaction of each of the remaining load nodes to 0.5 in ascending order and obtain the allocation of each load node. Step E3: Based on the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged, the member with the highest original satisfaction ranking calculates its corresponding carbon emission responsibility allocation result, then recalculates its satisfaction after one adjustment, and obtains the standard deviation of the satisfaction of each load node after one adjustment.

6. A fair NCFI carbon emission responsibility sharing device, characterized in that, It includes: The power flow distribution acquisition module is used to perform power system power flow calculations based on the distribution network simulation platform, quantitatively evaluate the power flow distribution of the system, and acquire the power flow distribution, wherein NCFI is the node carbon footprint intensity. The original allocation result acquisition module is used to establish a system carbon flow relationship calculation model based on the power flow distribution, and based on the system carbon flow relationship obtained by the calculation model, construct a system node carbon footprint intensity calculation model, and calculate the original carbon emission responsibility allocation result of each load node. The carbon emission responsibility allocation fairness interval acquisition module is used to construct the carbon emission responsibility allocation amount for each load node based on the historical responsibility principle and the individual equal development principle, and to determine the upper and lower limits of the carbon emission responsibility allocation fairness interval for the corresponding node based on the carbon emission responsibility allocation results. The original satisfaction acquisition module is used to construct a scheme fairness calculation model for each load node based on the upper and lower limits of the fairness interval of carbon emission responsibility allocation for the corresponding node and the original carbon emission responsibility allocation results for each load node, and obtain the corresponding original satisfaction and satisfaction standard deviation. The satisfaction optimization and adjustment module optimizes and adjusts the original satisfaction level and the standard deviation of satisfaction level based on the fairness calculation model of the scheme and the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged.

7. A fair NCFI carbon emission responsibility sharing device according to claim 6, characterized in that, The satisfaction optimization and adjustment module includes: The original satisfaction calculation module is used to calculate the original satisfaction and original satisfaction standard deviation of each load node based on the NCFI carbon emission responsibility allocation method through the function of the scheme fairness calculation model, and sort the original satisfaction of each load node in ascending order. The first satisfaction optimization and adjustment module is used to select the member with the lowest original satisfaction, analyze the reasons and readjust their satisfaction to 0.5, and then obtain the member's allocation after one adjustment according to the function of the scheme fairness calculation model. Then, the remaining load nodes are readjusted to 0.5 in order from smallest to largest, and the allocation of each load node is obtained. The second satisfaction optimization and adjustment module is used to calculate the carbon emission responsibility allocation result of the member with the highest original satisfaction ranking based on the principle that the total amount of the original carbon emission responsibility allocation result remains unchanged, and then re-adjust the satisfaction of the member after one adjustment, and obtain the standard deviation of the satisfaction of each load node after one adjustment.

8. An electronic device, characterized in that, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement a fair NCFI carbon emission responsibility sharing method as described in any one of claims 1-5.

9. A computer-readable storage medium storing computer instructions thereon, characterized in that, When executed by the processor, this instruction implements the steps of an NCFI carbon emission responsibility sharing method that takes fairness into account, as described in any one of claims 1-5.

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